BioMed Research International: Dermatology The latest articles from Hindawi Publishing Corporation © 2015 , Hindawi Publishing Corporation . All rights reserved. Conventional and Unconventional Use of Lasers in Skin Disorders Mon, 09 Mar 2015 08:58:18 +0000 Silvia Moretti, Michael S. Kaminer, Anne Le Pillouer-Prost, and Piero Campolmi Copyright © 2015 Silvia Moretti et al. All rights reserved. Own Experience in Treatment of Patients with Penile Cancer Using Photodynamic Therapy Thu, 05 Mar 2015 12:42:49 +0000 Penile cancer is a rare pathology. For penile cancer surgical treatment, radiotherapy, chemotherapy, and combined modality treatment are available. Because of great importance of this organ for mental condition of patient, the development of organ-preserving methods allowing to minimize impact on patient’s quality of life without compromising of oncological results is desirable. In the Center of Laser and Photodynamic diagnosis and treatment of tumors in P.A. Herzen Moscow Cancer Research Institute the methods of photodynamic therapy in patients with penile cancer have been developed. From 2011 to 2013 the treatment was conducted in 11 patients with precancer and cancer of penile. The average age was 56.6. According to morphological diagnosis photodynamic therapy (PDT) was performed using two methods. One method included topical application of agent for PDT and the second intravenous administration of photosensitizer. For topical application alasens was used and for intravenous injection we applied radachlorine. All patients had no complications. Complete regression was achieved in 9 patients, and partial regression in 2. Thus, the results showed that photodynamic therapy for penile cancer stage Tis-1N0M0 permits performing organ-preserving treatment with satisfactory oncological results and no impairment of patient’s quality of life. Elena Filonenko, Andrey Kaprin, Boris Alekseev, and Antonina Urlova Copyright © 2015 Elena Filonenko et al. All rights reserved. An Open-Label Uncontrolled, Multicenter Study for the Evaluation of the Efficacy and Safety of the Dermal Filler Princess VOLUME in the Treatment of Nasolabial Folds Tue, 03 Mar 2015 09:19:14 +0000 The dermal filler Princess VOLUME is a highly cross-linked, viscoelastic hyaluronic acid injectable gel implant used for aesthetic treatment. To evaluate the efficacy and safety of Princess VOLUME in the treatment of nasolabial folds, an open-label uncontrolled, multicenter study was conducted. Forty-eight subjects were recruited who had moderate to deep wrinkles, according to the Modified Fitzpatrick Wrinkle Scale (MFWS). Subjects received Princess VOLUME in both nasolabial folds at Day 0. Nasolabial fold severity was evaluated at 30, 90, 180, and 270 days after treatment, using the MFWS and the Global Aesthetic Improvement Scale (GAIS). Adverse events and treatment site reactions were recorded. Among the 48 subjects, 93.8% were female with a median age of 52 years. There were significant improvements in the MFWS scores at 30, 180, and 270 days after treatment compared with those at baseline, with a mean decrease of 1.484 (±0.408), 1.309 (±0.373), and 1.223 (±0.401), respectively; hence the primary endpoint was achieved and clinical efficacy demonstrated. Princess VOLUME was well tolerated, and most adverse events were injection site reactions of mild to moderate severity. Subject satisfaction (97.9%), subject recommendation of the treatment (93.6%), and investigators GAIS scores (97.9% improvement) were high. Daisy Kopera, Michael Palatin, Rolf Bartsch, Katrin Bartsch, Maria O’Rourke, Sonja Höller, Renate R. Baumgartner, and Martin Prinz Copyright © 2015 Daisy Kopera et al. All rights reserved. Characterizing Facial Skin Ageing in Humans: Disentangling Extrinsic from Intrinsic Biological Phenomena Thu, 12 Feb 2015 08:17:50 +0000 Facial skin ageing is caused by intrinsic and extrinsic mechanisms. Intrinsic ageing is highly related to chronological age. Age related skin changes can be measured using clinical and biophysical methods. The aim of this study was to evaluate whether and how clinical characteristics and biophysical parameters are associated with each other with and without adjustment for chronological age. Twenty-four female subjects of three age groups were enrolled. Clinical assessments (global facial skin ageing, wrinkling, and sagging), and biophysical measurements (roughness, colour, skin elasticity, and barrier function) were conducted at both upper cheeks. Pearson’s correlations and linear regression models adjusted for age were calculated. Most of the measured parameters were correlated with chronological age (e.g., association with wrinkle score, ) and with each other (e.g., residual skin deformation and wrinkle score, ). After statistical adjustment for age, only few associations remained (e.g., mean roughness () and luminance (),  , ). Chronological age as surrogate marker for intrinsic ageing has the most important influence on most facial skin ageing signs. Changes in skin elasticity, wrinkling, sagging, and yellowness seem to be caused by additional extrinsic ageing. Carina Trojahn, Gabor Dobos, Andrea Lichterfeld, Ulrike Blume-Peytavi, and Jan Kottner Copyright © 2015 Carina Trojahn et al. All rights reserved. Analysis of Circulating Vascular Endothelial Growth Factor and Its Soluble Receptors in Patients with Different Forms of Chronic Urticaria Tue, 10 Feb 2015 10:40:00 +0000 Background. Vascular endothelial growth factor (VEGF) is a powerful enhancer of vascular permeability and inflammatory response; however its significance in chronic urticaria is poorly recognised. Aim. To compare free circulating levels of VEGF and its soluble receptors (sVEGFR1 and VEGFR2) in patients with different forms of chronic urticaria. Methods. The concentrations of VEGF and its receptors in plateletpoor plasma (PPP)/plasma were measured using enzyme-linked immunosorbent assay in chronic urticaria: (1) chronic spontaneous urticaria (CSU) with positive autologous serum skin test (ASST), (2) CSU with negative response to ASST, (3) CSU with concomitant euthyroid Hashimoto’s thyroiditis (CSU/Hashimoto), (4) delayed pressure urticaria (DPU), and the healthy subjects. Results. There were no significant differences in VEGF concentration in PPP between CSU groups and the healthy subjects. Contrary, VEGF concentration was significantly higher in DPU and CSU/Hashimoto patients as compared with the healthy subjects and CSU groups. Furthermore, VEGF value in CSU/Hashimoto patients during the remission was similar to that of the active period and significantly higher than the healthy subjects; VEGF concentration was significantly correlated with TSH. Plasma concentrations of sVEGF1 and sVEGF2 were similar in chronic urticaria patients and the healthy subjects. Conclusions. Increased free circulating VEGF concentration may result from the urticarial process itself as well as concomitant Hashimoto’s thyroiditis. Julia Jagodzinska, Renata Polaniak, Ewa Birkner, and Alicja Kasperska-Zajac Copyright © 2015 Julia Jagodzinska et al. All rights reserved. Differentiation between Acute Skin Rejection in Allotransplantation and T-Cell Mediated Skin Inflammation Based on Gene Expression Analysis Tue, 10 Feb 2015 06:51:28 +0000 Advances in microsurgical techniques and immunosuppressive medication have rendered transplantation of vascularized composite allografts possible, when autologous tissue is neither available nor sufficient for reconstruction. However, skin rejection and side effects of long-term immunosuppression still remain a major hurdle for wide adoption of this excellent reconstructive technique. Histopathologic changes during acute skin rejection in vascular composite allotransplantation often mimic inflammatory skin disorders and are hard to distinguish. Hence, the identification of diagnostic and therapeutic markers specific for skin rejection is of particular clinical need. Here we present novel markers allowing for early differentiation between rejection in hind limb allotransplantation and contact hypersensitivity. Assessment of Ccl7, Il18, and Il1b expression is most indicative of distinguishing skin rejection from skin inflammatory disorders. Gene expression levels varied significantly across skin types and regions, indicating localization specific mechanism of leukocyte migration and infiltration. Expression of Il12b, Il17a, and Il1b gene expression levels differed significantly between rejection and inflammation, independent of the skin type. In synopsis of the RNA expression profile and previously assessed protein expression, the Il1 family appears as a promising option for accurate skin rejection diagnosis and, as a following step, for development of novel rejection treatments. Dolores Wolfram, Evi M. Morandi, Nadine Eberhart, Theresa Hautz, Hubert Hackl, Bettina Zelger, Gregor Riede, Tanja Wachter, Sandrine Dubrac, Christian Ploner, Gerhard Pierer, and Stefan Schneeberger Copyright © 2015 Dolores Wolfram et al. All rights reserved. Salivary Desmoglein Enzyme-Linked Immunosorbent Assay for Diagnosis of Pemphigus Vulgaris: A Noninvasive Alternative Test to Serum Assessment Thu, 22 Jan 2015 13:30:43 +0000 Background. Serum desmoglein enzyme-linked immunosorbent assay (ELISA) is used for the diagnosis and monitoring of pemphigus diseases. Objectives. To compare the diagnostic accuracy of salivary antidesmoglein (Dsg) 1 and 3 ELISA in the diagnosis of pemphigus vulgaris (PV) patients with that of serum desmogleins ELISA. Methods. Eighty-six untreated PV patients and 180 age- and sex-matched PV-free controls were recruited in this case-control study. PV was diagnosed based on clinical, histopathological, and direct immunofluorescence findings. After processing, serum and salivary anti-Dsg 1 and 3 were measured by the ELISA method using Euroimmun kit (Lübeck, Germany). Results. Using the cut-off point of 20 relative units (RU)/mL, the serum anti-Dsg 1 and 3 ELISA were positive in 62 (72.1%) and 83 (96.5%) patients, respectively, and the salivary anti-Dsg 1 and 3 ELISA were positive in 31 (36.1%) and 63 (73.3%) patients, respectively. The specificity of salivary anti-Dsg 1 and anti-Dsg 3 were both 98.9%. Optimal cut-off values of 7.7 and 13.4 RU/mL were determined for the salivary anti-Dsg 1 and anti-Dsg 3 ELISA, respectively. Conclusion. Salivary anti-Dsg 1 and 3 ELISA with high specificities (98.9%) could be suggested as safe and noninvasive methods for the diagnosis of PV when obtaining a blood sample is difficult. Hossein Mortazavi, Alireza Khatami, Zahra Seyedin, Iman Vasheghani Farahani, and Maryam Daneshpazhooh Copyright © 2015 Hossein Mortazavi et al. All rights reserved. miR-136 Modulates TGF-β1-Induced Proliferation Arrest by Targeting PPP2R2A in Keratinocytes Thu, 15 Jan 2015 06:37:53 +0000 Keratinocytes proliferation is critical for the capacity to heal wounds and accumulating evidences have proved that dysregulation of microRNAs is involved in proliferation of keratinocytes. However, the molecular mechanisms remain to be completely elucidated. Here, we show that miR-136 was significantly decreased by TGF-β1 treatment in HaCaT cells and normal human epidermal keratinocytes (NHEK), and it was a Smad3-dependent manner. By cell proliferation assay and cell cycle analysis, we found that reintroduction of miR-136 by transfection, as well as PPP2R2A silencing, counteracted TGF-β-induced proliferation arrest in HaCaT cells. Further, PPP2R2A was verified as a direct target of miR-136 by dual-luciferase reporter assays and Western blotting. These data suggest that miR-136 may play an important role during TGF-β1-induced proliferation arrest by targeting PPP2R2A in keratinocytes, which might represent a potential target for improving skin wound healing. Dianbao Zhang, Jing Wang, Zhe Wang, Tao Zhang, Ping Shi, Xiliang Wang, Feng Zhao, Xiaoyu Liu, Xuewen Lin, and Xining Pang Copyright © 2015 Dianbao Zhang et al. All rights reserved. Yokukansan, a Traditional Japanese Medicine, Adjusts Glutamate Signaling in Cultured Keratinocytes Wed, 17 Sep 2014 00:00:00 +0000 Glutamate plays an important role in skin barrier signaling. In our previous study, Yokukansan (YKS) affected glutamate receptors in NC/Nga mice and was ameliorated in atopic dermatitis lesions. The aim of this study was to assess the effect of YKS on skin and cultured human keratinocytes. Glutamate concentrations in skin of YKS-treated and nontreated NC/Nga mice were measured. Then, glutamate release from cultured keratinocytes was measured, and extracellular glutamate concentrations in YKS-stimulated cultured human keratinocytes were determined. The mRNA expression levels of NMDA receptor 2D (NMDAR2D) and glutamate aspartate transporter (GLAST) were also determined in YKS-stimulated cultured keratinocytes. The glutamate concentrations and dermatitis scores increased in conventional mice, whereas they decreased in YKS-treated mice. Glutamate concentrations in cell supernatants of cultured keratinocytes increased proportionally to the cell density. However, they decreased dose-dependently with YKS. YKS stimulation increased NMDAR2D in a concentration-dependent manner. Conversely, GLAST decreased in response to YKS. Our findings indicate that YKS affects peripheral glutamate signaling in keratinocytes. Glutamine is essential as a transmitter, and dermatitis lesions might produce and release excess glutamate. This study suggests that, in keratinocytes, YKS controls extracellular glutamate concentrations, suppresses N-methyl-D-aspartate (NMDA) receptors, and activates glutamate transport. Maki Wakabayashi, Toshio Hasegawa, Takuji Yamaguchi, Naoko Funakushi, Hajime Suto, Rie Ueki, Hiroyuki Kobayashi, Hideoki Ogawa, and Shigaku Ikeda Copyright © 2014 Maki Wakabayashi et al. All rights reserved. Physical and Dosimetric Optimization of Laser Equipment in Dermatology: A Preliminary Study Mon, 15 Sep 2014 00:00:00 +0000 The aim of this preliminary study is to investigate the correlation between clinical set-up at present used in the treatment of specific skin conditions and laser beam absorbed power in the tissue. This study focused on the CO2 and Nd-Yag laser equipment used in the daily clinical practice in the Department of Dermatology of San Gallicano Institute in Rome. Different types of tissue-equivalent material with various water and haemoglobin concentrations were tested to evaluate laser beam attenuation power. In particular, thinly sliced pork loin, of uniform consistency and without fat, was selected for its high content of haemoglobin to mimic human tissues. An optical power meter was used to measure the power or energy of a laser beam. During measurements, the tissue equivalent phantoms were positioned on the detector head and the laser beam was orthogonally oriented. The results of two experimental set-ups are reported here. The dependence of residual power (W) as a function of ex vivo tissue thickness (mm) for different laser output powers was studied. Data were fitted by a parametric logistic equation. These preliminary data allow for more accurately determining the energy fraction released from lasers to the tissues in order to improve clinical outcomes. A. Soriani, D. D'Alessio, V. Cattelan, N. Cameli, M. Mariano, S. Ungania, M. Guerrisi, and L. Strigari Copyright © 2014 A. Soriani et al. All rights reserved. Effects of the Combined PDL/Nd:YAG Laser on Surgical Scars: Vascularity and Collagen Changes Evaluated by In Vivo Confocal Microscopy Tue, 09 Sep 2014 09:27:46 +0000 The aim of this study was to investigate the efficacy of the sequential combined 585 nm PDL and the 1064 nm neodymium:yttrium-aluminium-garnet laser (PDL/Nd:YAG) in the treatment of surgical scars and to evaluate the short-term effects by in vivo confocal microscopy (RCM) and the long-term effects by clinical assessment of the scars. Twenty-five patients were enrolled with 39 postoperative linear scars; each scar was divided into two fields. One half was treated with the combined PDL/Nd:YAG laser, whereas the other half remained untreated. Each scar was treated three times at monthly intervals. Scars were evaluated by an independent examiner, using the Vancouver Scar Scale. The combined PDL/Nd:YAG laser significantly improved the appearance of the scars. In order to study the short-term effects of combined laser treatment, six additional patients were enrolled with 7 postoperative linear scars. One half of scars was treated once with the combined PDL/Nd:YAG laser. One week after this laser treatment, both the treated and the nontreated parts of the scars were examined by dermoscopy and RCM. The dermoscopic pictures revealed improvements even in treated areas. In conclusion, the combined PDL/Nd:YAG laser was found to be effective in improving the quality and appearance of the surgical scars. Krisztina Vas, Magdolna Gaál, Erika Varga, Réka Kovács, Balázs Bende, Ádám Kocsis, and Lajos Kemény Copyright © 2014 Krisztina Vas et al. All rights reserved. Unconventional Use of Intense Pulsed Light Wed, 03 Sep 2014 06:03:00 +0000 According to the literature, intense pulsed light (IPL) represents a versatile tool in the treatment of some dermatological conditions (i.e., pigmentation disorders, hair removal, and acne), due to its wide range of wavelengths. The authors herein report on 58 unconventional but effective uses of IPL in several cutaneous diseases, such as rosacea (10 cases), port-wine stain (PWS) (10 cases), disseminated porokeratosis (10 cases), pilonidal cyst (3 cases), seborrheic keratosis (10 cases), hypertrophic scar (5 cases) and keloid scar (5 cases), Becker’s nevus (2 cases), hidradenitis suppurativa (2 cases), and sarcoidosis (1 case). Our results should suggest that IPL could represent a valid therapeutic support and option by providing excellent outcomes and low side effects, even though it should be underlined that the use and the effectiveness of IPL are strongly related to the operator’s experience (acquired by attempting at least one specific course on the use of IPL and one-year experience in a specialized centre). Moreover, the daily use of these devices will surely increase clinical experience and provide new information, thus enhancing long-term results and improving IPL effectiveness. D. Piccolo, D. Di Marcantonio, G. Crisman, G. Cannarozzo, M. Sannino, A. Chiricozzi, and S. Chimenti Copyright © 2014 D. Piccolo et al. All rights reserved. New Described Dermatological Disorders Thu, 28 Aug 2014 15:24:29 +0000 Many advances in dermatology have been made in recent years. In the present review article, newly described disorders from the last six years are presented in detail. We divided these reports into different sections, including syndromes, autoinflammatory diseases, tumors, and unclassified disease. Syndromes included are “circumferential skin creases Kunze type” and “unusual type of pachyonychia congenita or a new syndrome”; autoinflammatory diseases include “chronic atypical neutrophilic dermatosis with lipodystrophy and elevated temperature (CANDLE) syndrome,” “pyoderma gangrenosum, acne, and hidradenitis suppurativa (PASH) syndrome,” and “pyogenic arthritis, pyoderma gangrenosum, acne, and hidradenitis suppurativa (PAPASH) syndrome”; tumors include “acquired reactive digital fibroma,” “onychocytic matricoma and onychocytic carcinoma,” “infundibulocystic nail bed squamous cell carcinoma,” and “acral histiocytic nodules”; unclassified disorders include “saurian papulosis,” “symmetrical acrokeratoderma,” “confetti-like macular atrophy,” and “skin spicules,” “erythema papulosa semicircularis recidivans.” Müzeyyen Gönül, Bengu Cevirgen Cemil, Havva Ozge Keseroglu, and Havva Kaya Akis Copyright © 2014 Müzeyyen Gönül et al. All rights reserved. Clinical Nonlinear Laser Imaging of Human Skin: A Review Thu, 28 Aug 2014 10:55:59 +0000 Nonlinear optical microscopy has the potential of being used in vivo as a noninvasive imaging modality for both epidermal and dermal imaging. This paper reviews the capabilities of nonlinear microscopy as a noninvasive high-resolution tool for clinical skin inspection. In particular, we show that two-photon fluorescence microscopy can be used as a diagnostic tool for characterizing epidermal layers by means of a morphological examination. Additional functional information on the metabolic state of cells can be provided by measuring the fluorescence decay of NADH. This approach allows differentiating epidermal layers having different structural and cytological features and has the potential of diagnosing pathologies in a very early stage. Regarding therapy follow-up, we demonstrate that nonlinear microscopy could be successfully used for monitoring the effect of a treatment. In particular, combined two-photon fluorescence and second-harmonic generation microscopy were used in vivo for monitoring collagen remodeling after microablative fractional laser resurfacing and for quantitatively monitoring psoriasis on the basis of the morphology of epidermal cells and dermal papillae. We believe that the described microscopic modalities could find in the near future a stable place in a clinical dermatological setting for quantitative diagnostic purposes and as a monitoring method for various treatments. Riccardo Cicchi, Dimitrios Kapsokalyvas, and Francesco Saverio Pavone Copyright © 2014 Riccardo Cicchi et al. All rights reserved. Antioxidant and Anti-Inflammatory Effects of Selected Natural Compounds Contained in a Dietary Supplement on Two Human Immortalized Keratinocyte Lines Sun, 17 Aug 2014 00:00:00 +0000 Several advantages may derive from the use of dietary supplements containing multiple natural antioxidants and/or anti-inflammatory agents. At present, however, there is scarce information on the properties and potential of combined supplements. To fill the gap, the antioxidant and anti-inflammatory activities exerted by a combination of seven natural components (coenzyme Q10, krill oil, lipoic acid, resveratrol, grape seed oil, α-tocopherol, and selenium) contained in a dietary supplement used for the prevention of skin disorders were investigated in vitro. Each component was administered, alone or in combination, to human keratinocytes, and the inhibition of Reactive Oxygen Species production and lipid peroxidation as well as the ability to reduce inflammatory cytokine secretion and to modulate Nuclear Factor-κB pathway was evaluated. The combination exhibited high antioxidant activity and in specific conditions the combination’s efficiency was higher than that of the most powerful components administered individually. Moreover, the combination showed remarkable anti-inflammatory properties. It reduced more efficiently than each component the secretion of Monocyte Chemoattractant Protein-1, a crucial cytokine for the development of chronic inflammation in skin, and inhibited Nuclear Factor-κB molecular pathway. Overall, our findings suggest that the combined formulation may have the potential to powerfully inhibit oxidative stress and inflammation at skin level. Elena Fasano, Simona Serini, Nadia Mondella, Sonia Trombino, Leonardo Celleno, Paola Lanza, Achille Cittadini, and Gabriella Calviello Copyright © 2014 Elena Fasano et al. All rights reserved. A Medical Manipulator System with Lasers in Photodynamic Therapy of Port Wine Stains Thu, 14 Aug 2014 06:48:27 +0000 Port wine stains (PWS) are a congenital malformation and dilation of the superficial dermal capillary. Photodynamic therapy (PDT) with lasers is an effective treatment of PWS with good results. However, because the laser density is uneven and nonuniform, the treatment is carried out manually by a doctor thus providing little accuracy. Additionally, since the treatment of a single lesion can take between 30 and 60 minutes, the doctor can become fatigued after only a few applications. To assist the medical staff with this treatment method, a medical manipulator system (MMS) was built to operate the lasers. The manipulator holds the laser fiber and, using a combination of active and passive joints, the fiber can be operated automatically. In addition to the control input from the doctor over a human-computer interface, information from a binocular vision system is used to guide and supervise the operation. Clinical results are compared in nonparametric values between treatments with and without the use of the MMS. The MMS, which can significantly reduce the workload of doctors and improve the uniformity of laser irradiation, was safely and helpfully applied in PDT treatment of PWS with good therapeutic results. Xingtao Wang, Chunlai Tian, Xingguang Duan, Ying Gu, and Naiyan Huang Copyright © 2014 Xingtao Wang et al. All rights reserved. Chronic Spontaneous Urticaria Is Characterized by Lower Serum Advanced Glycation End-Products Mon, 11 Aug 2014 09:32:07 +0000 Background. Chronic spontaneous urticaria (CSU) is associated with activation of acute phase response. On the other hand, it is known that systemic inflammation may lead to increased formation of advanced glycation end-products (AGEs), associated with pathogenesis of various diseases. Aim. We aim to test whether chronic inflammation manifested by activated acute phase response may provide a mechanism for increased serum AGEs concentration in CSU. Methods. Concentrations of AGEs were measured spectrofluorimetrically in serum of CSU patients and the healthy subjects. Results. Serum AGEs and albumin concentrations in CSU patients were significantly lower as compared with the healthy subjects. Serum CRP concentration was significantly higher in patients with CSU than in the controls. Significant positive correlation was observed between AGEs and albumin concentrations in the subjects. Conclusions. CSU is not associated with increased circulating AGEs concentrations, despite the enhanced systemic inflammatory response. Paradoxical decrease of serum AGEs concentrations is probably a reflection of lower concentration of “negative acute phase proteins” such as albumin. Alicja Grzanka, Aleksandra Damasiewicz-Bodzek, Edyta Machura, Magdalena Szumska, Krystyna Tyrpień-Golder, Bogdan Mazur, and Alicja Kasperska-Zajac Copyright © 2014 Alicja Grzanka et al. All rights reserved. The Modulatory Effect of Ellagic Acid and Rosmarinic Acid on Ultraviolet-B-Induced Cytokine/Chemokine Gene Expression in Skin Keratinocyte (HaCaT) Cells Mon, 04 Aug 2014 11:34:48 +0000 Ultraviolet radiation (UV) induces an increase in multiple cutaneous inflammatory mediators. Ellagic acid (EA) and rosmarinic acid (RA) are natural anti-inflammatory and immunomodulatory compounds found in many plants, fruits, and nuts. We assessed the ability of EA and RA to modulate IL-1β, IL-6, IL-8, IL-10, MCP-1, and TNF-α gene expression in HaCaT cells after UVB irradiation. Cells were treated with UVB (100 mJ/cm2) and simultaneously with EA (5 μM in 0.1% DMSO) or RA (2.7 μM in 0.5% DMSO). Moreover, these substances were added to the UVB-irradiated cells 1 h or 6 h before harvesting, depending on the established UVB-induced cytokine expression peak. Cytokine gene expression was examined using quantitative real time polymerase chain reaction. RA produced a significant reduction in UVB-induced expression of IL-6, IL-8, MCP-1, and TNF-α when applied at the same time as irradiation. EA showed milder effects compared with RA, except for TNF-α. Both substances decreased IL-6 expression, also when applied 5 h after irradiation, and always produced a significant increase in UVB-induced IL-10 expression. Our findings suggest that EA and RA are able to prevent and/or limit the UVB-induced inflammatory cascade, through a reduction in proinflammatory mediators and the enhancement of IL-10, with its protective function. Serena Lembo, Anna Balato, Roberta Di Caprio, Teresa Cirillo, Valentina Giannini, Franco Gasparri, and Giuseppe Monfrecola Copyright © 2014 Serena Lembo et al. All rights reserved. Correlation between the Severity and Type of Acne Lesions with Serum Zinc Levels in Patients with Acne Vulgaris Thu, 24 Jul 2014 00:00:00 +0000 Acne vulgaris is the most common cutaneous disorder affecting adolescents and young adults. Some studies have reported an association between serum zinc levels and acne vulgaris. We aimed to evaluate the serum zinc level in patients with acne vulgaris and compare it with healthy controls. One hundred patients with acne vulgaris and 100 healthy controls were referred to our clinic. Acne severity was classified according to Global Acne Grading System (GAGS). Atomic absorption spectrophotometry was used to measure serum zinc levels. Mean serum level of zinc in acne patients and controls was 81.31 ± 17.63 μg/dl and 82.63 ± 17.49 μg/dl, respectively. Although the mean serum zinc level was lower in acne group, it was not statistically significant (). There was a correlation between serum zinc levels with severity and type of acne lesions. The results of our study suggest that zinc levels may be related to the severity and type of acne lesions in patients with acne vulgaris. Relative decrease of serum zinc level in acne patients suggests a role for zinc in the pathogenesis of acne vulgaris. Majid Rostami Mogaddam, Nastaran Safavi Ardabili, Nasrollah Maleki, and Maedeh Soflaee Copyright © 2014 Majid Rostami Mogaddam et al. All rights reserved. Tattoo-Associated Skin Reaction: The Importance of an Early Diagnosis and Proper Treatment Wed, 23 Jul 2014 10:56:38 +0000 Tattoo is going to be a very common practice especially among young people and we are witnessing a gradual increase of numerous potential complications to tattoo placement which are often seen by physicians, but generally unknown to the public. The most common skin reactions to tattoo include a transient acute inflammatory reaction due to trauma of the skin with needles and medical complications such as superficial and deep local infections, systemic infections, allergic contact dermatitis, photodermatitis, granulomatous and lichenoid reactions, and skin diseases localized on tattooed area (eczema, psoriasis, lichen, and morphea). Next to these inflammatory skin reactions we have to consider also the possibility of the development of cutaneous conditions such as pseudolymphomatous reactions and pseudoepitheliomatous hyperplasia. The aim of this study is to underline the importance of an early diagnosis by performing a histological examination especially when we are in front of suspected papulonodular lesions arising from a tattoo, followed by a proper treatment, since cutaneous neoplastic evolution is known to be a rare but possible complication. Andrea Bassi, Piero Campolmi, Giovanni Cannarozzo, Rossana Conti, Nicola Bruscino, Massimo Gola, Stefano Ermini, Daniela Massi, and Silvia Moretti Copyright © 2014 Andrea Bassi et al. All rights reserved. Microbiota in Healthy Skin and in Atopic Eczema Sun, 13 Jul 2014 09:38:18 +0000 The Italian interest group (IG) on atopic eczema and urticaria is member of the Italian Society of Allergology and Immunology. The aim of our IG is to provide a platform for scientists, clinicians, and experts. In this review we discuss the role of skin microbiota not only in healthy skin but also in skin suffering from atopic dermatitis (AD). A Medline and Embase search was conducted for studies evaluating the role of skin microbiota. We examine microbiota composition and its development within days after birth; we describe the role of specific groups of microorganisms that colonize distinct anatomical niches and the biology and clinical relevance of antimicrobial peptides expressed in the skin. Specific AD disease states are characterized by concurrent and anticorrelated shifts in microbial diversity and proportion of Staphylococcus. These organisms may protect the host, defining them not as simple symbiotic microbes but rather as mutualistic microbes. These findings reveal links between microbial communities and inflammatory diseases such as AD and provide novel insights into global shifts of bacteria relevant to disease progression and treatment. This review also highlights recent observations on the importance of innate immune systems and the relationship with normal skin microflora for the maintenance of healthy skin. Giuseppe Baviera, Maria Chiara Leoni, Lucetta Capra, Francesca Cipriani, Giorgio Longo, Nunzia Maiello, Giampaolo Ricci, and Elena Galli Copyright © 2014 Giuseppe Baviera et al. All rights reserved. Mutational Analysis of Oculocutaneous Albinism: A Compact Review Sun, 29 Jun 2014 11:36:31 +0000 Oculocutaneous albinism (OCA) is an autosomal recessive disorder caused by either complete lack of or a reduction of melanin biosynthesis in the melanocytes. The OCA1A is the most severe type with a complete lack of melanin production throughout life, while the milder forms OCA1B, OCA2, OCA3, and OCA4 show some pigment accumulation over time. Mutations in TYR, OCA2, TYRP1, and SLC45A2 are mainly responsible for causing oculocutaneous albinism. Recently, two new genes SLC24A5 and C10orf11 are identified that are responsible to cause OCA6 and OCA7, respectively. Also a locus has been mapped to the human chromosome 4q24 region which is responsible for genetic cause of OCA5. In this paper, we summarized the clinical and molecular features of OCA genes. Further, we reviewed the screening of pathological mutations of OCA genes and its molecular mechanism of the protein upon mutation by in silico approach. We also reviewed TYR (T373K, N371Y, M370T, and P313R), OCA2 (R305W), TYRP1 (R326H and R356Q) mutations and their structural consequences at molecular level. It is observed that the pathological genetic mutations and their structural and functional significance of OCA genes will aid in development of personalized medicine for albinism patients. Balu Kamaraj and Rituraj Purohit Copyright © 2014 Balu Kamaraj and Rituraj Purohit. All rights reserved. Incidence and Predicted Risk Factors of Pressure Ulcers in Surgical Patients: Experience at a Medical Center in Taipei, Taiwan Thu, 26 Jun 2014 08:50:07 +0000 Purpose. To explore the context of incidence of and associated risk factors for pressure ulcers amongst the population of surgical patients. Methods. The initial study cohort was conducted with a total of 297 patients admitted to a teaching hospital for a surgical operation from November 14th to 27th 2006 in Taipei, Taiwan. The Braden scale, pressure ulcers record sheet, and perioperative patient outcomes free from signs and symptoms of injury related to positioning and related nursing interventions and activities were collected. Results. The incidence of immediate and thirty-minute-later pressure ulcers is 9.8% (29/297) and 5.1% (15/297), respectively. Using logistic regression model, the statistically significantly associated risk factors related to immediate and thirty-minute-later pressure ulcers include operation age, type of anesthesia, type of operation position, type of surgery, admission Braden score, and number of nursing intervention after adjustment for confounding factors. Conclusion. Admission Braden score and number of nursing intervention are well-established protected factors for the development of pressure ulcers. Our study shows that older operation age, type of anesthesia, type of operation position, and type of surgery are also associated with the development of pressure ulcers. Ling Fu Shaw, Pao-Chu Chang, Jung-Fen Lee, Huei-Yu Kung, and Tao-Hsin Tung Copyright © 2014 Ling Fu Shaw et al. All rights reserved. A Novel Missense Mutation in Oncostatin M Receptor Beta Causing Primary Localized Cutaneous Amyloidosis Thu, 26 Jun 2014 08:47:31 +0000 Primary localized cutaneous amyloidosis (PLCA) is a chronic skin disorder, caused by amyloid material deposition in the upper dermis. Autosomal dominant PLCA has been mapped earlier to pathogenic missense mutations in the OSMR gene, which encodes the oncostatin M receptor ß subunit (OSMRß). OSMRß is interleukin-6 family cytokine receptors and possesses two ligands, oncostatin M and interleukin-31, which both have biologic roles in inflammation and keratinocyte cell proliferation, differentiation, and apoptosis. Here, we identified a new OSMR mutation in a Kurdish family for the first time. Blood samples were taken from all the affected individuals in the family. DNA extraction was performed using salting out technique. Primers were designed for intron flanking individual exons of OSMR gene which were subjected to direct sequencing after PCR amplification for each sample. Sequencing showed a C/T substitution at position 613 in the proband. This mutation results in an L613S (leucine 613 to serine) amino acid change. The identified mutation was observed in all affected family members but not in 100 ethnically matched healthy controls. Elucidating the molecular basis of familial PLCA provides new insight into mechanisms of itch in human skin and may lead to new therapeutic targets for pruritus. Marjan Saeedi, Azadeh Ebrahim-Habibi, Alireza Haghighi, Fariba Zarrabi, Mahsa M. Amoli, and Reza M. Robati Copyright © 2014 Marjan Saeedi et al. All rights reserved. -Shogaol Inhibits α-MSH-Induced Melanogenesis through the Acceleration of ERK and PI3K/Akt-Mediated MITF Degradation Thu, 19 Jun 2014 08:07:06 +0000 -Shogaol is the main biologically active component of ginger. Previous reports showed that -shogaol has several pharmacological characteristics, such as antioxidative, anti-inflammatory, antimicrobial, and anticarcinogenic properties. However, the effects of -shogaol on melanogenesis remain to be elucidated. The study aimed to evaluate the potential skin whitening mechanisms of -shogaol. The effects of -shogaol on cell viability, melanin content, tyrosinase activity, and the expression of the tyrosinase and microphthalmia-associated transcription factor (MITF) were measured. The results revealed that -shogaol effectively suppresses tyrosinase activity and the amount of melanin and that those effects are more pronounced than those of arbutin. It was also found that -shogaol decreased the protein expression levels of tyrosinase-related protein 1 (TRP-1) and microphthalmia-associated transcriptional factor (MITF). In addition, the MITF mRNA levels were also effectively decreased in the presence of 20 μM -shogaol. The degradation of MITF protein was inhibited by the MEK 1-inhibitor (U0126) or phosphatidylinositol-3-kinase inhibitor (PI3K inhibitor) (LY294002). Further immunofluorescence staining assay implied the involvement of the proteasome in the downregulation of MITF by -shogaol. Our confocal assay results also confirmed that -shogaol inhibited α-melanocyte stimulating hormone- (α-MSH-) induced melanogenesis through the acceleration of extracellular responsive kinase (ERK) and phosphatidylinositol-3-kinase- (PI3K/Akt-) mediated MITF degradation. Huey-Chun Huang, Shu-Jen Chang, Chia-Yin Wu, Hui-Ju Ke, and Tsong-Min Chang Copyright © 2014 Huey-Chun Huang et al. All rights reserved. Serum Leptin Levels in Pemphigus: A Case Control Study Mon, 12 May 2014 11:34:51 +0000 Background. Pemphigus is an autoimmune blistering disease mediated by autoantibodies directed against keratinocyte adhesion molecules. Leptin, an adipocyte-derived hormone, plays a role in immune responses and promotes autoimmunity. Objectives. This study was conducted to determine whether serum leptin levels are altered in pemphigus patients and whether there is any correlation between leptin levels and the severity of disease. Methods. This study included 47 newly diagnosed patients with pemphigus and 43 age- and sex-matched healthy controls. Clinical characteristics and pemphigus area and activity score (PAAS) were assessed. Serum leptin levels (ng/mL) were measured by a commercial enzyme-linked immunosorbent assay (ELISA). Results. Patients did not differ significantly in serum leptin levels from healthy controls (median (range): 10.8 (0.1–110) ng/mL versus 12 (0.5–69.9) ng/mL and ). There was no significant association between serum leptin concentrations and severity of disease measured by PAAS (, ). Conclusion. The results suggest that pemphigus does not have a direct influence on serum leptin levels and the pathogenesis of pemphigus seems to be not dependent on the connection with adipose tissue. Nikoo Mozafari, Reza M. Robati, and Shima Younespour Copyright © 2014 Nikoo Mozafari et al. All rights reserved. Visualization and Treatment of Subclinical Actinic Keratoses with Topical Imiquimod 5% Cream: An Observational Study Sun, 11 May 2014 13:47:32 +0000 Background. Imiquimod 5% is licensed for the treatment of external genital warts, superficial basal cell carcinoma, and actinic keratosis (AK) and is being used experimentally in various other dermato-oncological conditions. Objective. This observational study shall show that nonmelanoma skin cancer can be detected at its earliest subclinical stage by its reaction with imiquimod and can be cleared by finishing the course of treatment. Material and Methods. In this single arm trial 15 patients with chronically sun-exposed skin who had no clinical evidence of AK were treated with 5% imiquimod cream on the face or scalp for 4 weeks three times per week. Results. During treatment, all patients developed multiple areas with mild to moderate inflammatory skin reactions, such as erythema, induration, and scaling. Biopsies obtained from 12 patients prior to treatment revealed no malignancies. However, in cases with more pronounced inflammation during treatment, targeted biopsies indicated very early malignant alterations. Conclusion. Topical imiquimod treatment of chronically sun-exposed skin without overt clinical signs of AK is able to detect subclinical actinic keratoses (SAK) and to completely clear the lesions, even before they can be clinically diagnosed as AK. In such patients, imiquimod might be able to prevent the evolution of SCC. Daisy Kopera and Helmut Kerl Copyright © 2014 Daisy Kopera and Helmut Kerl. All rights reserved. The Effect of Autologous Activated Platelet Rich Plasma (AA-PRP) Injection on Pattern Hair Loss: Clinical and Histomorphometric Evaluation Tue, 06 May 2014 07:05:35 +0000 To investigate the safety and clinical efficacy of AA-PRP injections for pattern hair loss. AA-PRP, prepared from a small volume of blood, was injected on half of the selected patients’ scalps with pattern hair loss. The other half was treated with placebo. Three treatments were given for each patient, with intervals of 1 month. The endpoints were hair re-growth, hair dystrophy as measured by dermoscopy, burning or itching sensation, and cell proliferation as measured by Ki-67 evaluation. At the end of the 3 cycles of treatment, the patients presented clinical improvement in the mean number of hairs, with a mean increase of 18.0 hairs in the target area, and a mean increase in total hair density of 27.7 ( number of hairs/cm2) compared with baseline values. Microscopic evaluation showed the increase of epidermis thickness and of the number of hair follicles two weeks after the last AA-PRP treatment compared to baseline value (). We also observed an increase of Ki67+ keratinocytes of epidermis and of hair follicular bulge cells and a slight increase of small blood vessels around hair follicles in the treated skin compared to baseline (). V. Cervelli, S. Garcovich, A. Bielli, G. Cervelli, B. C. Curcio, M. G. Scioli, A. Orlandi, and P. Gentile Copyright © 2014 V. Cervelli et al. All rights reserved. A Founder Large Deletion Mutation in Xeroderma Pigmentosum-Variant Form in Tunisia: Implication for Molecular Diagnosis and Therapy Sun, 04 May 2014 00:00:00 +0000 Xeroderma pigmentosum Variant (XP-V) form is characterized by a late onset of skin symptoms. Our aim is the clinical and genetic investigations of XP-V Tunisian patients in order to develop a simple tool for early diagnosis. We investigated 16 suspected XP patients belonging to ten consanguineous families. Analysis of the POLH gene was performed by linkage analysis, long range PCR, and sequencing. Genetic analysis showed linkage to the POLH gene with a founder haplotype in all affected patients. Long range PCR of exon 9 to exon 11 showed a 3926 bp deletion compared to control individuals. Sequence analysis demonstrates that this deletion has occurred between two Alu-Sq2 repetitive sequences in the same orientation, respectively, in introns 9 and 10. We suggest that this mutation POLH NG_009252.1: g.36847_40771del3925 is caused by an equal crossover event that occurred between two homologous chromosomes at meiosis. These results allowed us to develop a simple test based on a simple PCR in order to screen suspected XP-V patients. In Tunisia, the prevalence of XP-V group seems to be underestimated and clinical diagnosis is usually later. Cascade screening of this founder mutation by PCR in regions with high frequency of XP provides a rapid and cost-effective tool for early diagnosis of XP-V in Tunisia and North Africa. Mariem Ben Rekaya, Nadia Laroussi, Olfa Messaoud, Mariem Jones, Manel Jerbi, Chokri Naouali, Yosra Bouyacoub, Mariem Chargui, Rym Kefi, Becima Fazaa, Mohamed Samir Boubaker, Hamouda Boussen, Mourad Mokni, Sonia Abdelhak, Mohamed Zghal, Aida Khaled, and Houda Yacoub-Youssef Copyright © 2014 Mariem Ben Rekaya et al. All rights reserved. Women's Skin throughout Lifetime Sun, 13 Apr 2014 09:15:34 +0000 Gérald E. Piérard, Corinne Charlier, Philippe Delvenne, Philippe Humbert, and Claudine Piérard-Franchimont Copyright © 2014 Gérald E. Piérard et al. All rights reserved. The Female Pattern Hair Loss: Review of Etiopathogenesis and Diagnosis Wed, 09 Apr 2014 14:17:32 +0000 Female pattern hair loss (FPHL) is the most common hair loss disorder in women. Initial signs may develop during teenage years leading to a progressive hair loss with a characteristic pattern distribution. The condition is characterized by progressive replacement of terminal hair follicles over the frontal and vertex regions by miniaturized follicles, that leads progressively to a visible reduction in hair density. Women diagnosed with FPHL may undergo significant impairment of quality of life. FPHL diagnosis is mostly clinical. Depending on patient history and clinical evaluation, further diagnostic testing may be useful. The purpose of the paper is to review the current knowledge about epidemiology, pathogenesis, clinical manifestations, and diagnosis of FPHL. Anja Vujovic and Véronique Del Marmol Copyright © 2014 Anja Vujovic and Véronique Del Marmol. All rights reserved. Prevalence of Past and Reactivated Viral Infections and Efficacy of Cyclosporine A as Monotherapy or in Combination in Patients with Psoriatic Arthritis—Synergy Study: A Longitudinal Observational Study Thu, 03 Apr 2014 08:56:17 +0000 We have prospectively evaluated psoriatic arthritis (PsA) patients for (1) seropositivity for former viral infections and seroconversion and (2) efficacy of cyclosporine A (CsA) alone or in combination with other immunosuppressants in a time period of 12 months. Screening included HBV antibodies and antigens, HCV antibodies and RNA, HSV 1-2, HZV, EBV, and CMV IgG, and IgM, HHV-6 DNA, and HIV 1-2 antibodies. PsA was evaluated by the Psoriasis Area Severity Index (PASI), the Bath Ankylosing Spondylitis Disease Activity Index (BASDAI), and the Visual Analogue Scale (VAS). At baseline, 126 (56%) out of 225 evaluable patients had 2 or more seropositivities indicative of former infections, and 31 patients (13.8%) presented seropositivity for HCV, HBV, HSV-1 and -2, HHV-6, EBV, or parvovirus infection; one of them, positive for HBAg, was treated with lamivudine, while the remaining 30 received no specific treatment. None of the 31 patients developed virus reactivation. A reduction () of PASI, BASDAI, and VAS scores was observed at 6 and 12 months. The treatment of PsA with CsA as monotherapy or in combination was safe and effective. In vitro experiments and clinical findings, including those from our study, suggest that CsA as monotherapy or in combination with biologics might be the treatment of choice in PsA HCV-positive patients. Delia Colombo, Sergio Chimenti, Paolo Grossi, Antonio Marchesoni, Sergio Di Nuzzo, Vito Griseta, Anna Gargiulo, Aurora Parodi, Lucia Simoni, and Gilberto Bellia Copyright © 2014 Delia Colombo et al. All rights reserved. New Enlightenment of Skin Cancer Chemoprevention through Phytochemicals: In Vitro and In Vivo Studies and the Underlying Mechanisms Mon, 17 Mar 2014 08:46:58 +0000 Skin cancer is still a major cause of morbidity and mortality worldwide. Skin overexposure to ultraviolet irradiations, chemicals, and several viruses has a capability to cause severe skin-related disorders including immunosuppression and skin cancer. These factors act in sequence at various steps of skin carcinogenesis via initiation, promotion, and/or progression. These days cancer chemoprevention is recognized as the most hopeful and novel approach to prevent, inhibit, or reverse the processes of carcinogenesis by intervention with natural products. Phytochemicals have antioxidant, antimutagenic, anticarcinogenic, and carcinogen detoxification capabilities thereby considered as efficient chemopreventive agents. Considerable efforts have been done to identify the phytochemicals which may possibly act on one or several molecular targets that modulate cellular processes such as inflammation, immunity, cell cycle progression, and apoptosis. Till date several phytochemicals in the light of chemoprevention have been studied by using suitable skin carcinogenic in vitro and in vivo models and proven as beneficial for prevention of skin cancer. This revision presents a comprehensive knowledge and the main molecular mechanisms of actions of various phytochemicals in the chemoprevention of skin cancer. Madhulika Singh, Shankar Suman, and Yogeshwer Shukla Copyright © 2014 Madhulika Singh et al. All rights reserved. Pruritus in Female Patients Mon, 10 Mar 2014 16:17:04 +0000 Pruritus is a frequent symptom in many dermatological diseases. In this review we want to focus on not only itch problems specific to women, namely, pruritic vulvodermatoses, but also the specific pruritic dermatoses of pregnancy. The specific characteristics of the vulva and the hormonal changes during the different age periods make these dermatoses very particular. It seems that vulvar diseases are still underdiagnosed and undertreated. Pruritic vulvar diseases have a huge impact on quality of life. The most common pruritic diseases will be discussed, such as atopic and contact dermatitis, psoriasis, lichen sclerosis, lichen planus, and infectious vulvaginitis. We focus on the diagnostic issue of these diseases and will consider the general principles of therapy. Julien Lambert Copyright © 2014 Julien Lambert. All rights reserved. Streamlining Cutaneous Melanomas in Young Women of the Belgian Mosan Region Tue, 25 Feb 2014 11:38:46 +0000 Sporadic cutaneous melanoma (SCM) has shown a dramatic increase in incidence in Caucasian populations over the past few decades. A particular epidemiological increase was reported in women during their childbearing age. In the Belgian Mosan region, a progressive unremitting increase in SCM incidence was noticed in young women for the past 35 years. The vast majority of these SCMs were of the superficial type without any obvious relationship with a large number of melanocytic nevi or with signs of frequent and intense sunlight exposures as disclosed by the extent in the mosaic subclinical melanoderma. A series of investigations pointed to a possible relationship linking the development of some SCM to the women hormonal status including the effect of hormonal disruptors. These aspects remain, however, unsettled and controversial. It is possible to differentiate and clearly quantify the SCM shape, size, scalloped border, and variegated pigmentation using computerized morphometry as well as fractal and multifractal methods. Trinh Hermanns-Lê and Sébastien Piérard Copyright © 2014 Trinh Hermanns-Lê and Sébastien Piérard. All rights reserved. A Clinical and Pathological Overview of Vulvar Condyloma Acuminatum, Intraepithelial Neoplasia, and Squamous Cell Carcinoma Tue, 25 Feb 2014 08:52:56 +0000 Condyloma acuminatum, intraepithelial neoplasia, and squamous cell carcinoma are three relatively frequent vulvar lesions. Condyloma acuminatum is induced by low risk genotypes of human papillomavirus (HPV). Vulvar intraepithelial neoplasia (VIN) and squamous cell carcinoma have different etiopathogenic pathways and are related or not with high risk HPV types. The goal of this paper is to review the main pathological and clinical features of these lesions. A special attention has been paid also to epidemiological data, pathological classification, and clinical implications of these diseases. Boris Léonard, Frederic Kridelka, Katty Delbecque, Frederic Goffin, Stéphanie Demoulin, Jean Doyen, and Philippe Delvenne Copyright © 2014 Boris Léonard et al. All rights reserved. Measurement of Urinary Biomarkers of Parabens, Benzophenone-3, and Phthalates in a Belgian Population Tue, 25 Feb 2014 06:34:57 +0000 Parabens, benzophenone-3 (BP3), and phthalates are commonly used as antimicrobial conservator, UV-filter, and plasticizer, respectively, and are thought to exhibit endocrine disrupting properties. These endocrine disrupting activities have been recently assumed to lead to cutaneous malignant melanoma. Humans are exposed to these chemicals through different sources such as food, personal care products, or cosmetics. In this study, we measured urinary levels of 4 parabens, BP3, and 7 metabolites of phthalates in samples collected from 261 participants living in and around Liege (Belgium). The analyses were carried out by liquid chromatography tandem mass spectrometry (LC-MS/MS) using isotopic dilution. To the best of our knowledge, this is the first time that the urinary levels of these 3 classes of chemicals are reported for the same general population in Belgium. Most of the parabens, the BP3, and all the phthalate metabolites were detected in 82.8 to 100.0% of the samples. For most of these chemicals, the exposure patterns significantly differ not only between children and adults, but also between males and females, especially with higher concentrations of parabens and phthalate metabolites in female and children subjects, respectively. Lucas Dewalque, Catherine Pirard, and Corinne Charlier Copyright © 2014 Lucas Dewalque et al. All rights reserved. Female Gender and Acne Disease Are Jointly and Independently Associated with the Risk of Major Depression and Suicide: A National Population-Based Study Tue, 11 Feb 2014 06:15:52 +0000 Acne is a common disease in adolescence with female preponderance. It could cause poor self-esteem and social phobia. Previous studies based on questionnaires from several thousands of adolescents showed that acne is associated with major depression and suicide. However, the gender- and age-specific risk of depression and suicide in patients with acne remain largely unknown. Using a database from the National Health Insurance, which included 98% of the population of Taiwan in 2006, we identified patients of acne, major depression, and suicide based on ICD-9-CM codes. Totally 47111 patients with acne were identified (16568 males and 30543 females) from 1 million subjects. The youths of 7–12 years had the highest prevalence of acne (14.39%). Major depression was more common in those with acne (0.77%) than controls (0.56% , P < 0.0001) regardless of gender. Multiple logistic regression showed an increased risk of major depression in women without acne (OR = 1.85, 95% CI 1.75–1.96). The risk is additive in women with acne (OR = 2.78, 95% CI 2.43–3.17). Similar additive risk of suicide was noticed in women with acne. In conclusion, acne and gender, independently and jointly, are associated with major depression and suicide. Special medical support should be warranted in females with acne for the risk of major depression and suicide. Yi-Chien Yang, Hung-Pin Tu, Chien-Hui Hong, Wei-Chao Chang, Hung-Chun Fu, Ji-Chen Ho, Wei-Pin Chang, Hung-Yi Chuang, and Chih-Hung Lee Copyright © 2014 Yi-Chien Yang et al. All rights reserved. Efficacy and Cost-Efficacy of Biologic Therapies for Moderate to Severe Psoriasis: A Meta-Analysis and Cost-Efficacy Analysis Using the Intention-to-Treat Principle Wed, 29 Jan 2014 10:05:09 +0000 Background. Compared to conventional therapies, biologics are more effective but expensive in treating psoriasis. Objective. To evaluate the efficacy and cost-efficacy of biologic therapies for psoriasis. Methods. We conducted a meta-analysis to calculate the efficacy of etanercept, adalimumab, infliximab, and ustekinumab for at least 75% reduction in the Psoriasis Area and Severity Index score (PASI 75) and Physician’s Global Assessment clear/minimal (PGA 0/1). The cost-efficacy was assessed by calculating the incremental cost-effectiveness ratio (ICER) per subject achieving PASI 75 and PGA 0/1. Results. The incremental efficacy regarding PASI 75 was 55% (95% confidence interval (95% CI) 38%–72%), 63% (95% CI 59%–67%), 71% (95% CI 67%–76%), 67% (95% CI 62%–73%), and 72% (95% CI 68%–75%) for etanercept, adalimumab, infliximab, and ustekinumab 45 mg and 90 mg, respectively. The corresponding 6-month ICER regarding PASI 75 was $32,643 (best case $24,936; worst case $47,246), $21,315 (best case $20,043; worst case $22,760), $27,782 (best case $25,954; worst case $29,440), $25,055 (best case $22,996; worst case $27,075), and $46,630 (best case $44,765; worst case $49,373), respectively. The results regarding PGA 0/1 were similar. Conclusions. Infliximab and ustekinumab 90 mg had the highest efficacy. Meanwhile, adalimumab had the best cost-efficacy, followed by ustekinumab 45 mg and infliximab. Ching-Chi Chi and Shu-Hui Wang Copyright © 2014 Ching-Chi Chi and Shu-Hui Wang. All rights reserved. Hypoxia Enhances the Senescence Effect of Bortezomib—The Proteasome Inhibitor—On Human Skin Fibroblasts Wed, 29 Jan 2014 00:00:00 +0000 The 26S proteasome inhibitor, bortezomib, selectively induces apoptosis in some cancer cells. However, the nature of its selectivity remains unknown. The study presented here provides novel information on cellular effects of bortezomib in normal fibroblasts. We have found that in normoxic conditions the percent of apoptotic cells did not change significantly, independently on incubation time and examined concentration of bortezomib (25 nmol/L or 50 nmol/L). In hypoxic conditions we did not observe any effect of bortezomib on apoptosis of fibroblasts incubated for 24 h and 48 h in comparison to control. Only in the case of fibroblasts incubated for 12 hours in hypoxia significant increase in apoptosis, dependent on concentration of bortezomib, was observed. Our study has shown that bortezomib causes a time-dependent increase in senescence of normal fibroblasts, especially of these incubated in hypoxic conditions. Moreover, we demonstrated that oxygen regulated protein 150 (ORP150) expression was induced in fibroblasts in hypoxia conditions only, suggesting that this protein may play an important role in the cytoprotective response to environmental stress. Rafał Krętowski, Małgorzata Borzym-Kluczyk, and Marzanna Cechowska-Pasko Copyright © 2014 Rafał Krętowski et al. All rights reserved. Effect of Equal Daily Doses Achieved by Different Power Densities of Low-Level Laser Therapy at 635 nm on Open Skin Wound Healing in Normal and Diabetic Rats Thu, 16 Jan 2014 12:08:23 +0000 Background and Objective. Despite the fact that the molecular mechanism of low-level laser therapy (LLLT) is not yet known, the exploitation of phototherapy in clinical medicine and surgery is of great interest. The present study investigates the effects of LLLT on open skin wound healing in normal and diabetic rats. Materials and Methods. Four round full-thickness skin wounds on dorsum were performed in male adult nondiabetic () and diabetic () Sprague–Dawley rats. AlGaInP (635 nm, wavelength; 5 J/cm2, daily dose) was used to deliver power densities of 1, 5, and 15 mW/cm2 three times daily until euthanasia. Results. PMNL infiltration was lower in the irradiated groups (15 mW/cm2). The synthesis and organisation of collagen fibres were consecutively enhanced in the 5 mW/cm2 and 15 mW/cm2 groups compared to the others in nondiabetic rats. In the diabetic group the only significant difference was recorded in the ratio PMNL/Ma at 15 mW/cm2. A significant difference in the number of newly formed capillaries in the irradiated group (5, 15 mW/cm2) was recorded on day six after injury compared to the control group. Conclusion. LLLT confers a protective effect against excessive inflammatory tissue response; it stimulates neovascularization and the early formation of collagen fibres. Róbert Kilík, Lucia Lakyová, Ján Sabo, Peter Kruzliak, Kamila Lacjaková, Tomáš Vasilenko, Martina Vidová, František Longauer, and Jozef Radoňak Copyright © 2014 Róbert Kilík et al. All rights reserved. Vulvar Skin Disorders throughout Lifetime: About Some Representative Dermatoses Wed, 08 Jan 2014 07:51:01 +0000 The objective of this paper is to present general considerations which should be kept in mind by clinicians in charge of women with vulvar diseases. Four representative vulvar dermatoses are described. Lichen simplex chronicus is a pathological condition related to chemical and mechanical irritant agents. Detrimental effects of these irritants, in the presence of other dermatoses, have to be considered when therapeutic responses are unsatisfactory. Lichen sclerosus is the most common vulvar dermatosis in elderly. However, it should be kept in mind that it may be diagnosed at any age. Lichen planus, in spite of sharing a similar range of etiological factors with lichen sclerosus, is a very distinct entity. Finally, Paget’s disease, although rare, is also described especially because of the challenge it represents both clinically and therapeutically. Jean Doyen, Stéphanie Demoulin, Katty Delbecque, Frédéric Goffin, Frédéric Kridelka, and Philippe Delvenne Copyright © 2014 Jean Doyen et al. All rights reserved. A Methodological Evaluation of Volumetric Measurement Techniques including Three-Dimensional Imaging in Breast Surgery Wed, 08 Jan 2014 06:27:36 +0000 Breast surgery currently remains very subjective and each intervention depends on the ability and experience of the operator. To date, no objective measurement of this anatomical region can codify surgery. In this light, we wanted to compare and validate a new technique for 3D scanning (LifeViz 3D) and its clinical application. We tested the use of the 3D LifeViz system (Quantificare) to perform volumetric calculations in various settings (in situ in cadaveric dissection, of control prostheses, and in clinical patients) and we compared this system to other techniques (CT scanning and Archimedes’ principle) under the same conditions. We were able to identify the benefits (feasibility, safety, portability, and low patient stress) and limitations (underestimation of the in situ volume, subjectivity of contouring, and patient selection) of the LifeViz 3D system, concluding that the results are comparable with other measurement techniques. The prospects of this technology seem promising in numerous applications in clinical practice to limit the subjectivity of breast surgery. H. Hoeffelin, D. Jacquemin, V. Defaweux, and J L. Nizet Copyright © 2014 H. Hoeffelin et al. All rights reserved. Psoriasis: Female Skin Changes in Various Hormonal Stages throughout Life—Puberty, Pregnancy, and Menopause Sat, 28 Dec 2013 15:46:35 +0000 Psoriasis is one of the most prevalent immune mediated skin diseases worldwide. Despite the large prevalence in both men and women, the pathogenesis of this disease has not yet been fully clarified. Nowadays, it is believed that psoriasis is most likely a T helper Th1/Th17 induced inflammatory disease. Stressful life situations are known to cause flare-ups and psoriasis activity may be linked to stress from major life events. We know that stress greatly affects both the hormone and immune systems and that there are many different hormonal phases throughout a woman’s lifetime. The severity of psoriasis may fluctuate or be influenced by each phase and this relationship can be seen as disease frequency seems to peak during puberty, postpartum, and menopause when hormone levels fall, while symptoms improve during pregnancy, a state when hormone levels are increased. Romana Ceovic, Marko Mance, Zrinka Bukvic Mokos, Maja Svetec, Kresimir Kostovic, and Daska Stulhofer Buzina Copyright © 2013 Romana Ceovic et al. All rights reserved. Targeting Brain Metastases in Patients with Melanoma Mon, 23 Dec 2013 15:55:59 +0000 Patients with brain metastases from malignant melanoma historically have a very poor outcome. Surgery and radiotherapy can be used, but for the majority of patients the disease will progress quickly. In the recent past, patients with brain metastases derived only minimal benefit from cytotoxic chemotherapy. Novel therapies that have been shown to be superior to chemotherapy in metastatic melanoma have made their way in clinic and data regarding their use in patients with treated or untreated brain metastases are encouraging. In this paper we describe the use of vemurafenib, dabrafenib, and ipilimumab in patients with melanoma disseminated to the brain in addition to other treatments currently in development. Dionysis Papadatos-Pastos, Aspasia Soultati, and Mark Harries Copyright © 2013 Dionysis Papadatos-Pastos et al. All rights reserved. Immunohistochemical Patterns in the Interfollicular Caucasian Scalps: Influences of Age, Gender, and Alopecia Sun, 22 Dec 2013 15:49:54 +0000 Skin ageing and gender influences on the scalp have been seldom studied. We revisited the changes in the interfollicular scalp. The study was performed on a population of 650 volunteers (300 women and 350 men) for over 7 years. Three age groups were selected in both genders, namely, subjects aged 20–35, 50–60, and 60–70 years. The hair status was further considered according to nonalopecic and alopecic patterns and severity (discrete, moderate, and severe). Biopsies from the parietal area were processed for immunohistochemistry. Stromal cells were distinguished according to the presence of vimentin, Factor XIIIa, CD117, and versican. Blood and lymphatic vessels were highlighted by Ulex europaeus agglutinin-1 and human podoplanin immunoreactivities, respectively. Actinic elastosis was identified by the lysozyme coating of elastic fibres. The epidermis was explored using the CD44 variant 3 and Ki67 immunolabellings. Biplot analyses were performed. Immunohistochemistry revealed a prominent gender effect in young adults. Both Factor XIIIa+ dermal dendrocytes and the microvasculature size decreased with scalp ageing. Alopecia changes mimicked stress-induced premature senescence. Claudine Piérard-Franchimont, Geneviève Loussouarn, Ségolène Panhard, Didier Saint Léger, Myriam Mellul, and Gérald E. Piérard Copyright © 2013 Claudine Piérard-Franchimont et al. All rights reserved. Revisiting the Cutaneous Impact of Oral Hormone Replacement Therapy Sat, 21 Dec 2013 10:33:24 +0000 Menopause is a key point moment in the specific aging process of women. It represents a universal evolution in life. Its initiation is defined by a 12-month amenorrhea following the ultimate menstrual period. It encompasses a series of different biologic and physiologic characteristics. This period of life appears to spot a decline in a series of skin functional performances initiating tissue atrophy, withering, and slackness. Any part of the skin is possibly altered, including the epidermis, dermis, hypodermis, and hair follicles. Hormone replacement therapy (oral and nonoral) and transdermal estrogen therapy represent possible specific managements for women engaged in the climacteric phase. All the current reports indicate that chronologic aging, climacteric estrogen deficiency, and adequate hormone therapy exert profound effects on various parts of the skin. Gérald E. Piérard, Philippe Humbert, Enzo Berardesca, Ulysse Gaspard, Trinh Hermanns-Lê, and Claudine Piérard-Franchimont Copyright © 2013 Gérald E. Piérard et al. All rights reserved. The Effect of Conditioned Media of Adipose-Derived Stem Cells on Wound Healing after Ablative Fractional Carbon Dioxide Laser Resurfacing Wed, 04 Dec 2013 11:35:34 +0000 Objective. To evaluate the benefits of conditioned medium of Adipose-derived stem cells (ADSC-CM) on wound healing after fractional carbon dioxide laser resurfacing (FxCR) on human skin. Materials and Methods. Nineteen subjects were treated with FxCR on the bilateral inner arms. ADSC-CM was applied on FxCR site of one randomly selected arm. Transepidermal water loss (TEWL), skin color, and gross-elasticity of FxCR site on both arms were measured. Skin samples were taken by biopsy from three subjects 3 weeks after treatment for histopathological manifestations and mRNA expressions of procollagen types I and III, elastin genes were noted. Results. The index of erythema, melanin, and TEWL of the ADSC-CM-treated skin were significantly lower than those of the control side. The mRNA expression of type III procollagen in ADSC-CM-treated group at 3 weeks posttreatment was 2.6 times of that of the control group. Conclusion. Application of allograft ADSC-CM is an effective method for enhancing wound healing after FxCR, by reducing transient adverse effects such as erythema, hyperpigmentation, and increased TEWL. Bing-Rong Zhou, Yang Xu, Shi-Lei Guo, Yan Xu, Ying Wang, Fen Zhu, Felicia Permatasari, Di Wu, Zhi-Qiang Yin, and Dan Luo Copyright © 2013 Bing-Rong Zhou et al. All rights reserved. Impact of the 2009 (7th Edition) AJCC Melanoma Staging System in the Classification of Thin Cutaneous Melanomas Tue, 03 Dec 2013 18:02:44 +0000 Context. The 7th (2009) edition of the AJCC melanoma staging system incorporates tumor (Breslow) thickness, MR, and ulceration in stratifying T1 primary melanomas. Compared to the prior 6th (2001) edition, MR has replaced CL for thin melanomas. Objective. We sought to identify and report differences of the classification of thin melanomas as well as outcome of SLNB in patients according to the 6th and 7th editions at our institution. Results. 106 patients were identified with thin melanomas verified by wide excision. 31 of 106 thin melanomas were reclassified according to the 7th edition of the AJCC. Of those 31, 15 CL II/III patients (6th edition T1a) were reclassified as T1b based on the presence of mitoses while 16 CL IV patients (6th edition T1b) were categorized as T1a based on the absence of mitoses. 26/31 reclassified patients underwent SLNB, and all were negative. Patients with thin melanoma and a +SLNB () were all classified as T1b according to both staging systems. Conclusions. In our experience, 29% of thin melanomas were reclassified according to the 7th edition with similar proportions of patients re-distributed as T1a (14%) and T1b (15%). Cases with +SLN corresponded with T1b lesions in both 6th and 7th editions. Vicki H. Chu, Michael T. Tetzlaff, Carlos A. Torres-Cabala, Victor G. Prieto, Roland Bassett Jr., Jeffrey E. Gershenwald, Michael S. McLemore, Doina Ivan, Wei-Lien (Billy) Wang, Merrick I. Ross, and Jonathan L. Curry Copyright © 2013 Vicki H. Chu et al. All rights reserved. Safety Assessment and Biological Effects of a New Cold Processed SilEmulsion for Dermatological Purpose Tue, 05 Nov 2013 10:12:35 +0000 It is of crucial importance to evaluate the safety profile of the ingredients used in dermatological emulsions. A suitable equilibrium between safety and efficacy is a pivotal concern before the marketing of a dermatological product. The aim was to assess the safety and biological effects of a new cold processed silicone-based emulsion (SilEmulsion). The hazard, exposure, and dose-response assessment were used to characterize the risk for each ingredient. EpiSkin assay and human repeat insult patch tests were performed to compare the theoretical safety assessment to in vitro and in vivo data. The efficacy of the SilEmulsion was studied using biophysical measurements in human volunteers during 21 days. According to the safety assessment of the ingredients, 1,5-pentanediol was an ingredient of special concern since its margin of safety was below the threshold of 100 (36.53). EpiSkin assay showed that the tissue viability after the application of the SilEmulsion was 92 ± 6% and, thus considered nonirritant to the skin. The human studies confirmed that the SilEmulsion was not a skin irritant and did not induce any sensitization on the volunteers, being safe for human use. Moreover, biological effects demonstrated that the SilEmulsion increased both the skin hydration and skin surface lipids. Sara Raposo, Ana Salgado, Lídia Gonçalves, Pedro C. Pinto, Manuela Urbano, and Helena M. Ribeiro Copyright © 2013 Sara Raposo et al. All rights reserved. Role of Toll-Interacting Protein Gene Polymorphisms in Leprosy Mexican Patients Mon, 04 Nov 2013 11:22:27 +0000 Background. Leprosy is a debilitating infectious disease of human skin and nerves. Genetics factors of the host play an important role in the disease susceptibility. Toll-interacting protein (TOLLIP) is an inhibitory adaptor protein within the toll-like receptor (TLR) pathway, which recognizes structurally conserved molecular patterns of microbial pathogens, initiating immune responses. The objective of this study was to investigate the association of variants in the TOLLIP gene with susceptibility to leprosy in Mexican patients. Methods. TOLLIP polymorphisms were studied using a case-control design of Mexican patients with lepromatous leprosy (LL). The polymorphisms of TOLLIP at loci −526 C>G (rs5743854), 1309956C>T (rs3750920), 1298430C>A (rs5744015), and 1292831 G>A (rs3750919) were analyzed by PCR, with sequence-specific primers in LL patients and healthy subjects (HS) as controls. Results. Genotype distributions were in Hardy Weinberg equilibrium for all sites except for rs3750920. Neither genotype nor allele frequencies were statistically different between LL patients and controls (). The maximum pairwise D’ coefficient reached was 0.44 of linkage () for all the polymorphisms except for rs5743854. The three loci haplotype comparison yielded no significant differences between groups. Conclusions. Just the individuals with genotype C/C of rs3750920 have a trend of protective effect to developing LL. Margarita Montoya-Buelna, Mary Fafutis-Morris, Alvaro J. Tovar-Cuevas, Anabell Alvarado-Navarro, Yeminia Valle, Jorge R. Padilla-Gutierrez, Jose F. Muñoz-Valle, and Luis E. Figuera-Villanueva Copyright © 2013 Margarita Montoya-Buelna et al. All rights reserved. Proteomic Profiling Reveals Upregulated Protein Expression of Hsp70 in Keloids Thu, 24 Oct 2013 15:30:52 +0000 Background. The biochemical characteristics of keloid-derived fibroblasts differ from those of adjacent normal fibroblasts, and these differences are thought to be the cause of abnormal fibrosis. Therefore, we investigated the characteristic proteins that are differentially expressed in keloid-derived fibroblasts using proteomics tools. Objective. We attempted to investigate the novel proteins that play important roles in the pathophysiology of keloids. Methods. Proteomics analysis was performed to identify differentially expressed proteins in keloid-derived fibroblasts. Keloid-derived fibroblasts and adjacent normal fibroblasts were analyzed with 2-DAGE. We validated these proteins with immunoblot analysis, real-time RT-PCR, and immunohistochemistry. Results. Sixteen differentially expressed protein spots were identified in keloid-derived fibroblasts. Among them, heat shock protein 70 (Hsp70) was specifically upregulated in keloid-derived fibroblasts. Also, immunohistochemistry and western blot analysis revealed increased Hsp70, TGF-β, and PCNA expressions in keloids compared to normal tissue. Conclusion. Hsp70 is overexpressed in keloid fibroblasts and tissue. The overexpression of Hsp70 may be involved in the pathogenesis of keloids, and the inhibition of Hsp70 could be a new therapeutic tool for the treatment of keloids. Ju Hee Lee, Jung U. Shin, Inhee Jung, Hemin Lee, Dong Kyun Rah, Jin Young Jung, and Won Jai Lee Copyright © 2013 Ju Hee Lee et al. All rights reserved. Essential Oil of Common Sage (Salvia officinalis L.) from Jordan: Assessment of Safety in Mammalian Cells and Its Antifungal and Anti-Inflammatory Potential Wed, 09 Oct 2013 14:53:45 +0000 Salvia officinalis L. (Lamiaceae) is a Mediterranean species, naturalized in many countries. In Jordan, it is used in traditional medicine as antiseptic, antiscabies, antisyphilitic, and anti-inflammatory, being frequently used against skin diseases. This study aimed the assessment of the antifungal and anti-inflammatory potential of its essential oils, and their cytotoxicity on macrophages and keratinocytes. The oils were investigated by gas chromatography and gas chromatography-mass spectrometry and the antifungal activity was evaluated against yeasts, dermatophyte and Aspergillus strains. Assessment of cell viability was made by the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay and the in vitro anti-inflammatory potential was evaluated by measuring nitric oxide production using lipopolysaccharide-stimulated mouse macrophages. The main compounds of S. officinalis oils were 1,8-cineole (39.5–50.3%) and camphor (8.8–25.0%). The oils revealed antifungal activity against dermatophyte strains and significantly inhibited NO production stimulated by LPS in macrophages, without affecting cell viability, in concentrations up to 0.64 μL/mL. This is the first report addressing the in vitro anti-inflammatory potential of S. officinalis oil. These findings demonstrated that bioactive concentrations of S. officinalis oils do not affect mammalian macrophages and keratinocytes viability making them suitable to be incorporated in skin care formulations for cosmetic and pharmaceutical purposes. M. S. Abu-Darwish, C. Cabral, I. V. Ferreira, M. J. Gonçalves, C. Cavaleiro, M. T. Cruz, T. H. Al-bdour, and L. Salgueiro Copyright © 2013 M. S. Abu-Darwish et al. All rights reserved. The Weather-Beaten Dorsal Hand Clinical Rating, Shadow Casting Optical Profilometry, and Skin Capacitance Mapping Thu, 03 Oct 2013 13:52:09 +0000 Laypeople commonly perceive some skin xerosis and withering (roughness) changes during winter on some parts of the body, particularly on the dorsal hands. The aim of the study was to assess the withered skin surface changes occurring during the four seasons. A total of 47 menopausal women completed the study. A group of 31 volunteers were on hormone replacement therapy (HRT) and 16 were out of HRT. Skin xerosis and scaliness were rated clinically. In addition, skin whitening was assessed by computerized shadow casting optical profilometry and by skin capacitance mapping. The volunteers were not using topical creams and over-the-counter products on their hands. Marked changes, recorded over the successive seasons, corresponded to patchy heterogeneous stratum corneum hydration and heterogeneous skin surface roughness changing over seasons; they likely resulted from changes in the environmental temperature and atmosphere moisture. The severity of the changes revealed by clinical inspection was not supported by similar directions of fluctuations in the instrumental assessments. This seemingly contradiction was in fact due to different levels of scale observation. The clinical centimetric scale and the instrumental inframillimetric scale possibly provide distinct aspects of a given biological impact. Marie Delvenne, Claudine Piérard-Franchimont, Laurence Seidel, Adelin Albert, and Gérald E. Piérard Copyright © 2013 Marie Delvenne et al. All rights reserved. Cyclic Catamenial Dermatoses Wed, 02 Oct 2013 14:33:06 +0000 Circulating sex hormones follow major fluctuations during the ovarian cycle. The so-called premenstrual syndrome represents a global condition grouping the diversity of catamenial disorders. At the skin level, the sebaceous gland activity is obviously modulated by these endocrine fluctuations. In addition, a series of pathological manifestations take place simultaneously in some women. Among them, the most frequent skin condition is represented by catamenial acne. Concurrently, the autoimmune progesterone dermatitis refers to a diversity of skin alterations resulting from an immune reaction to progesterone. It is present under variable clinical aspects. A series of other recurrent skin conditions are not specifically induced but are merely exacerbated at the end of the ovarian cycle. Trinh Hermanns-Lê, Jean-François Hermanns, Marianne Lesuisse, and Gérald E. Piérard Copyright © 2013 Trinh Hermanns-Lê et al. All rights reserved. Videocapillaroscopic Alterations in Alopecia Areata Thu, 19 Sep 2013 14:03:15 +0000 Alopecia areata (AA) is a common hair disorder observed in dermatological practice; however, the exact mechanisms that lead to the hair loss are still unknown. Disturbances in the blood supply of hair follicles may be one of the elements in the complex pathogenesis of AA. Nailfold videocapillaroscopy is a noninvasive technique that allows analysis of skin microcirculation in vivo. The aim of the study was the videocapillaroscopic assessment of skin microcirculation in AA patients. The study included 44 patients with patchy alopecia areata, 27 with alopecia universalis or totalis, and 40 healthy volunteers. Nailfold videocapillaroscopy was performed in all participants according to a standard protocol. Obtained images were assessed qualitatively and quantitatively. Two types of videocapillaroscopic images were distinguished in the study. Abnormal videocapillaroscopic images were found in 42% of patients. Tortuous and branching capillaries (, ), decreased density of capillaries (), enlargement of the efferent limb (), or top part of the loop () were observed significantly more often than in the control group. Only some patients with AA presented with microvascular abnormalities characterised by altered videocapillaroscopic images. More studies, including larger group of patients with AA, are required to determine the role of observed videocapillaroscopic alterations in AA. Agnieszka Gerkowicz, Dorota Krasowska, Aldona Pietrzak, Anna Michalak-Stoma, Joanna Bartosińska, Maria Juszkiewicz-Borowiec, and Grażyna Chodorowska Copyright © 2013 Agnieszka Gerkowicz et al. All rights reserved. HPLC Quantitative Analysis of Rhein and Antidermatophytic Activity of Cassia fistula Pod Pulp Extracts of Various Storage Conditions Thu, 19 Sep 2013 08:31:51 +0000 Cassia fistula is well known for its laxative and antifungal properties due to anthraquinone compounds in the pods. This study quantitatively analyzed rhein in the C. fistula pod pulp decoction extracts kept under various storage conditions using HPLC. The antifungal activity of the extracts and their hydrolyzed mixture was also evaluated against dermatophytes. The contents of rhein in all stored decoction extracts remained more than 95% (95.69–100.66%) of the initial amount (% w/w). There was no significant change of the extracts kept in glass vials and in aluminum foil bags. The decoction extract of C. fistula pod pulp and its hydrolyzed mixture containing anthraquinone aglycones were tested against clinical strains of dermatophytes by broth microdilution technique. The results revealed good chemical and antifungal stabilities against dermatophytes of C. fistula pod pulp decoction extracts stored under various accelerated and real time storage conditions. Savita Chewchinda, Mansuang Wuthi-udomlert, and Wandee Gritsanapan Copyright © 2013 Savita Chewchinda et al. All rights reserved. CD133 Expression in Normal Skin and in Epithelial Cutaneous Tumors Thu, 12 Sep 2013 11:10:22 +0000 Background. Expression of human CD133 (human prominin-1) in cancer cells has been postulated to be a marker of stemness and is considered as a putative marker of cancer stem cells (CSCs). We designed a study to describe the expression pattern of CD133 in normal skin and in epithelial cutaneous neoplasms. Methods. The CD133 immunohistochemical expression of forty-three eccrine and apocrine tumors was compared to that observed in other epithelial tumors of the skin. In addition, flow cytometry was used to detect the CD133 expression of four epithelial skin neoplasms, including one porocarcinoma. Results. CD133 immunoreactivity at the apical or at the apicolateral surface of cells forming glandular structures was observed. Cells from solid areas of benign or malignant tumors were not stained. The porocarcinoma derived culture cells showed a 22% of CD133 positive cells using flow cytometry, while squamous cell carcinoma cultures contained less than 0.1%. Conclusions. These observations indicate that CD133 is a specific marker of glandular differentiation that could be included in the diagnostic panel of cutaneous tumors with possible eccrine or apocrine differentiation. However, the use of CD133 expression as a marker of CSCs should be interpreted with caution in experiments of skin. S. H. Nam-Cha, R. Serrano-Vargas, E. Escario, J. M. Azaña, R. Calero-Oliver, A. G. Martín, and E. Poblet Copyright © 2013 S. H. Nam-Cha et al. All rights reserved. Role of the Promoter Polymorphism IL-6 −174G/C in Dermatomyositis and Systemic Lupus Erythematosus Wed, 11 Sep 2013 10:38:22 +0000 The promoter polymorphism −174G/C within the interleukin-6 gene (IL-6) has been reported to have a functional importance through the modulation of IL-6 gene expression in vitro and in vivo. IL-6 is thought to play an important role in autoimmune diseases and the effect of its receptor inhibitor—tocilizumab—has been recently studied. The aim of this case-control study was to investigate the association between the interleukin-6 −174G/C single nucleotide polymorphism and the susceptibility to dermatomyositis (DM) and systemic lupus erythematosus (SLE) in Bulgarian patients. Altogether, 87 patients—52 with SLE and 35 with DM—as well as 80 unrelated healthy controls were included in this study. All of them were analyzed by restriction fragment length polymorphism analysis (RFLP). The GG genotype and the G allele appeared to be associated with SLE, especially in women. None of the genotypes showed an association with DM. However, the G allele appeared to be associated with muscle weakness and it is a risk factor for elevated muscle enzymes. Our results indicate that IL-6 −174G/C polymorphism might be associated with the susceptibility to SLE especially in women. Although it is not associated with DM, it seems that IL-6 −174G/C polymorphism could modulate some clinical features in the autoimmune myopathies. Maria Hristova, Lyubomir Dourmishev, Zornitsa Kamenarska, Svetla Nikolova, Radka Kaneva, Anton Vinkov, Marta Baleva, Daniela Monova, and Vanio Mitev Copyright © 2013 Maria Hristova et al. All rights reserved. Postelimination Status of Childhood Leprosy: Report from a Tertiary-Care Hospital in South India Sun, 08 Sep 2013 16:23:26 +0000 Introduction. Leprosy, a statistically “eliminated” disease from the globe, continues to linger around in its endemic countries including India. Objective. This study describes the epidemiological and clinicopathological pattern of the disease seen in children over a period of 8 years following its elimination in India. Materials and Methods. Medical records of all leprosy cases up to 14 years of age registered between April 2005 and March 2013 were retrospectively analyzed. Data were retrieved using a predesigned proforma and entered into the database system for analysis. Results. Child proportion of newly registered leprosy cases did not show a significant decline in the years following its elimination. The disease seemed to manifest frequently in older children with an insignificant gender predilection. More than half of child cases had a history of household contact. Paucibacillary leprosy dominated in them with a solitary skin lesion as the most frequent presentation. Although nerve thickening was seen in nearly half of these children, neuritis and lepra reactions were less common. Deformity at the time of diagnosis was noted in 13.89% of cases. Although smear positivity was not a common feature in children affected with leprosy, a good clinicohistopathological correlation was observed in those who underwent biopsy. Conclusion. Our study and reports from different parts of the country depict the unturned curves in the epidemiology of childhood leprosy which mirrors active transmission in the community, lacunae in diagnosis, and the need to strengthen contact screening activities in the pediatric population to sustain elimination. P. Chaitra and Ramesh Marne Bhat Copyright © 2013 P. Chaitra and Ramesh Marne Bhat. All rights reserved. Particular Mal de Meleda Phenotypes in Tunisia and Mutations Founder Effect in the Mediterranean Region Wed, 04 Sep 2013 14:09:38 +0000 Mal de Meleda (MDM) is a rare, autosomal recessive form of palmoplantar keratoderma. It is characterized by erythema and hyperkeratosis of the palms and soles that progressively extend to the dorsal surface of the hands and feet. It is caused by mutations in SLURP-1 gene encoding for secreted mammalian Ly-6/uPAR-related protein 1 (SLURP-1). We performed mutational analysis by direct sequencing of SLURP-1 gene in order to identify the genetic defect in three unrelated families (families MDM-12, MDM-13, and MDM-14) variably affected with transgressive palmoplantar keratoderma. A spectrum of clinical presentations with variable features has been observed from the pronounced to the transparent hyperkeratosis. We identified the 82delT frame shift mutation in the SLURP-1 gene in both families MDM-12 and MDM-13 and the missense variation p.Cys99Tyr in family MDM-14. To date, the 82delT variation is the most frequent cause of MDM in the world which is in favour of a recurrent molecular defect. The p.Cys99Tyr variation is only described in Tunisian families making evidence of founder effect mutation of likely Tunisian origin. Our patients presented with very severe to relatively mild phenotypes, including multiple keratolytic pits observed for one patient in the hyperkeratotic area which was not previously reported. The phenotypic variability may reflect the influence of additional factors on disease characteristics. This report further expands the spectrum of clinical phenotypes associated with mutations in SLURP1 in the Mediterranean population. Mbarka Bchetnia, Nadia Laroussi, Monia Youssef, Cherine Charfeddine, Ahlem Sabrine Ben Brick, Mohamed Samir Boubaker, Mourad Mokni, Sonia Abdelhak, Jameleddine Zili, and Rym Benmously Copyright © 2013 Mbarka Bchetnia et al. All rights reserved. Lifting the Silver Flakes: The Pathogenesis and Management of Chronic Plaque Psoriasis Sun, 25 Aug 2013 08:43:11 +0000 Psoriasis is a common chronic inflammatory skin condition in which patients suffer from mild to chronic plaque skin plaques. The disease manifests through an excessive inflammatory response in the skin due to complex interactions between different genetic and environmental factors. Psoriasis can affect the physical, emotional, and psychosocial well-being of patients, and currently there is no cure with treatments focusing primarily on the use of anti-inflammatory agents to control disease symptoms. Traditional anti-inflammatory agents can cause immunosuppression and adverse systemic effects. Further understanding of the disease has led to current areas of research aiming at the development of selective molecular targets to suppress the pathogenic immune responses. Heng T. Chong, Zlatko Kopecki, and Allison J. Cowin Copyright © 2013 Heng T. Chong et al. All rights reserved. Low Rate of Detection of Mucosal High-Risk-Type Human Papillomavirus in Korean Patients with Extragenital Bowen's Disease and Squamous Cell Carcinoma, Especially in Digital Cases Mon, 19 Aug 2013 10:06:09 +0000 Human papillomavirus (HPV) infection has been demonstrated in some of the nonmelanoma skin cancers as well as in precancerous lesions. Multiple infections of mucosal high-risk HPV may contribute to the onset of digital Bowen's disease through, if any, digital-genital transmission. We screened for the presence of the mucosal HPV DNA in patients with extragenital Bowen's disease (), squamous cell carcinoma (), bowenoid papulosis (), verrucous carcinoma (), actinic keratosis (), and basal cell carcinoma (). We used a PANArray HPV Genotyping Chip for high-risk and low-risk mucosal types. Genotyping data was confirmed using a conventional direct DNA sequencing method. Two cases of extragenital Bowen's disease were positive for types 16 and 33 of mucosal HPV, respectively. None of the squamous cell carcinoma cases were positive. Neither patients with digital Bowen's disease () nor those with squamous cell carcinoma () showed any mucosal high-risk HPV. Mucosal high-risk HPV DNA was confirmed in 5 (55.6%) of the 9 patients with bowenoid papulosis. HPV 16 was most prevalent (), while the DNA of HPVs 35 and 67 was detected in one sample for each of the two types. Our study demonstrated that two (6.7%) of the patients with 30 extragenital Bowen's disease were positive for types 16 and 33 of mucosal HPV, respectively. HPVs belonging to the mucosal high-risk group may participate in the development of extragenital Bowen's disease. However, we could not find any relationship between the mucosal high-risk HPV and Bowen's disease or squamous cell carcinoma in the fingers. Hye-Rim Park, Kwang Ho Kim, Soo Kee Min, Jinwon Seo, Dong Hoon Kim, and Mi Jung Kwon Copyright © 2013 Hye-Rim Park et al. All rights reserved. Neurotensin Modulates the Migratory and Inflammatory Response of Macrophages under Hyperglycemic Conditions Tue, 13 Aug 2013 09:02:48 +0000 Diabetic foot ulcers (DFUs) are characterized by an unsatisfactory inflammatory and migratory response. Skin inflammation involves the participation of many cells and particularly macrophages. Macrophage function can be modulated by neuropeptides; however, little is known regarding the role of neurotensin (NT) as a modulator of macrophages under inflammatory and hyperglycemic conditions. RAW 264.7 cells were maintained at 10/30 mM glucose, stimulated with/without LPS (1 μg/mL), and treated with/without NT(10 nM). The results show that NT did not affect macrophage viability. However, NT reverted the hyperglycemia-induced impair in the migration of macrophages. The expression of IL-6 and IL-1β was significantly increased under 10 mM glucose in the presence of NT, while IL-1β and IL-12 expression significantly decreased under inflammatory and hyperglycemic conditions. More importantly, high glucose modulates NT and NT receptor expression under normal and inflammatory conditions. These results highlight the effect of NT on cell migration, which is strongly impaired under hyperglycemic conditions, as well as its effect in decreasing the proinflammatory status of macrophages under hyperglycemic and inflammatory conditions. These findings provide new insights into the potential therapeutic role of NT in chronic wounds, such as in DFU, characterized by a deficit in the migratory properties of cells and a chronic proinflammatory status. Liane I. F. Moura, Lucília Silva, Ermelindo C. Leal, Ana Tellechea, Maria Teresa Cruz, and Eugénia Carvalho Copyright © 2013 Liane I. F. Moura et al. All rights reserved. Further Evidence of Mutational Heterogeneity of the XPC Gene in Tunisian Families: A Spectrum of Private and Ethnic Specific Mutations Thu, 25 Jul 2013 10:27:58 +0000 Xeroderma Pigmentosum (XP) is a rare recessive autosomal cancer prone disease, characterized by UV hypersensitivity and early appearance of cutaneous and ocular malignancies. We investigated four unrelated patients suspected to be XP-C. To confirm linkage to XPC gene, genotyping and direct sequencing of XPC gene were performed. Pathogenic effect of novel mutations was confirmed by reverse Transciptase PCR. Mutation screening revealed the presence of two novel mutations g.18246G>A and g.18810G>T in the XPC gene (NG_011763.1). The first is present in one patient XP50NEF, but the second is present in three unrelated patients (XP16KEB, XP28SFA, and XP45GB). These 3 patients are from three different cities of Southern Tunisia and bear the same haplotype, suggesting a founder effect. Reverse Transciptase PCR revealed the absence of the XPC mRNA. In Tunisia, as observed in an other severe genodermatosis, the mutational spectrum of XP-C group seems to be homogeneous with some clusters of heterogeneity that should be taken into account to improve molecular diagnosis of this disease. Mariem Ben Rekaya, Manel Jerbi, Olfa Messaoud, Ahlem Sabrine Ben Brick, Mohamed Zghal, Chiraz Mbarek, Ashraf Chadli-Debbiche, Meriem Jones, Mourad Mokni, Hamouda Boussen, Mohamed Samir Boubaker, Becima Fazaa, Houda Yacoub-Youssef, and Sonia Abdelhak Copyright © 2013 Mariem Ben Rekaya et al. All rights reserved. Stress Evaluation in Adult Patients with Atopic Dermatitis Using Salivary Cortisol Tue, 23 Jul 2013 09:13:22 +0000 The symptoms of atopic dermatitis (AD) are often aggravated by stress, and AD can also lead to psychological stress due to social isolation and discrimination. The salivary cortisol level reflects psychological stress, and it is a good index to assess chronic stress. In this study, we measured the salivary cortisol levels in patients with AD (). AD patients were also evaluated for general disease severity using the Scoring Atopic Dermatitis (SCORAD) index. The serum levels of TARC, total IgE, and lactate dehydrogenase (LDH) and peripheral blood eosinophil counts were measured by laboratory tests. The Skindex-16 was used as a skin disease-specific, quality of life measure, instrument. The results showed that the saliva cortisol level was significantly higher in AD patients compared to healthy subjects () while the serum TARC and LDH levels were positively correlated with the SCORAD index. However, no statistically significant correlations were observed between the salivary cortisol level and Skindex-16. These results suggest that the saliva cortisol level is therefore a useful biomarker to evaluate the stress in AD patients. Megumi Mizawa, Masaki Yamaguchi, Chieko Ueda, Teruhiko Makino, and Tadamichi Shimizu Copyright © 2013 Megumi Mizawa et al. All rights reserved. Correlations between Psoriasis and Inflammatory Bowel Diseases Sun, 21 Jul 2013 10:12:29 +0000 For a long time the relationship between inflammatory bowel diseases (IBDs) and psoriasis has been investigated by epidemiological studies. It is only starting from the 1990s that genetic and immunological aspects have been focused on. Psoriasis and IBD are strictly related inflammatory diseases. Skin and bowel represent, at the same time, barrier and connection between the inner and the outer sides of the body. The most important genetic correlations involve the chromosomal loci 6p22, 16q, 1p31, and 5q33 which map several genes involved in innate and adaptive immunity. The genetic background represents the substrate to the common immune processes involved in psoriasis and IBD. In the past, psoriasis and IBD were considered Th1-related disorders. Nowadays the role of new T cells populations has been highlighted. A key role is played by Th17 and T-regs cells as by the balance between these two cells types. New cytokines and T cells populations, as IL-17A, IL-22, and Th22 cells, could play an important pathogenetic role in psoriasis and IBD. The therapeutic overlaps further support the hypothesis of a common pathogenesis. Nevena Skroza, Ilaria Proietti, Riccardo Pampena, Giorgio La Viola, Nicoletta Bernardini, Francesca Nicolucci, Ersilia Tolino, Sara Zuber, Valentina Soccodato, and Concetta Potenza Copyright © 2013 Nevena Skroza et al. All rights reserved. Differential Influence of Components Resulting from Atmospheric-Pressure Plasma on Integrin Expression of Human HaCaT Keratinocytes Thu, 27 Jun 2013 14:49:03 +0000 Adequate chronic wound healing is a major problem in medicine. A new solution might be non-thermal atmospheric-pressure plasma effectively inactivating microorganisms and influencing cells in wound healing. Plasma components as, for example, radicals can affect cells differently. HaCaT keratinocytes were treated with Dielectric Barrier Discharge plasma (DBD/air, DBD/argon), ozone or hydrogen peroxide to find the components responsible for changes in integrin expression, intracellular ROS formation or apoptosis induction. Dependent on plasma treatment time reduction of recovered cells was observed with no increase of apoptotic cells, but breakdown of mitochondrial membrane potential. DBD/air plasma increased integrins and intracellular ROS. DBD/argon caused minor changes. About 100 ppm ozone did not influence integrins. Hydrogen peroxide caused similar effects compared to DBD/air plasma. In conclusion, effects depended on working gas and exposure time to plasma. Short treatment cycles did neither change integrins nor induce apoptosis or ROS. Longer treatments changed integrins as important for influencing wound healing. Plasma effects on integrins are rather attributed to induction of other ROS than to generation of ozone. Changes of integrins by plasma may provide new solutions of improving wound healing, however, conditions are needed which allow initiating the relevant influence on integrins without being cytotoxic to cells. Beate Haertel, Susanne Straßenburg, Katrin Oehmigen, Kristian Wende, Thomas von Woedtke, and Ulrike Lindequist Copyright © 2013 Beate Haertel et al. All rights reserved. Skin Basement Membrane: The Foundation of Epidermal Integrity—BM Functions and Diverse Roles of Bridging Molecules Nidogen and Perlecan Thu, 21 Mar 2013 14:25:45 +0000 The epidermis functions in skin as first defense line or barrier against environmental impacts, resting on extracellular matrix (ECM) of the dermis underneath. Both compartments are connected by the basement membrane (BM), composed of a set of distinct glycoproteins and proteoglycans. Herein we are reviewing molecular aspects of BM structure, composition, and function regarding not only (i) the dermoepidermal interface but also (ii) the resident microvasculature, primarily focusing on the per se nonscaffold forming components perlecan and nidogen-1 and nidogen-2. Depletion or functional deficiencies of any BM component are lethal at some stage of development or around birth, though BM defects vary between organs and tissues. Lethality problems were overcome by developmental stage- and skin-specific gene targeting or by cell grafting and organotypic (3D) cocultures of normal or defective cells, which allows recapitulating BM formation de novo. Thus, evidence is accumulating that BM assembly and turnover rely on mechanical properties and composition of the adjacent ECM and the dynamics of molecular assembly, including further “minor” local components, nidogens largely functioning as catalysts or molecular adaptors and perlecan as bridging stabilizer. Collectively, orchestration of BM assembly, remodeling, and the role of individual players herein are determined by the developmental, tissue-specific, or functional context. Dirk Breitkreutz, Isabell Koxholt, Kathrin Thiemann, and Roswitha Nischt Copyright © 2013 Dirk Breitkreutz et al. All rights reserved. Challenging Regional Psoriasis and Ustekinumab Biotherapy: Impact of the Patterns of Disease Mon, 13 Aug 2012 16:00:25 +0000 In some patients, psoriasis appears refractory to many treatments, particularly when the disease is confined to some specific body regions. In this respect, palmoplantar psoriasis and palmoplantar pustulosis are possibly related conditions in their immunopathomechanisms involving Il-12, IL-23, and Th17. Nail psoriasis and scalp psoriasis are two other particular psoriasis manifestations. Accordingly, ustekinumab was tested in a few of these patients. The present paper is limited to peer-reviewed case reports. Data were not supported by bioinstrumental assessments and controlled trials. Overall, they are indicative of potential efficacy. The cost-effectiveness and the risk-benefit assessments merit further investigations. Trinh Hermanns-Lê, Enzo Berardesca, Gérald E. Piérard, Marianne Lesuisse, and Claudine Piérard-Franchimont Copyright © 2012 Trinh Hermanns-Lê et al. All rights reserved. Ustekinumab Biotherapy and Real-Time Psoriasis Capacitance Mapping: A Pilot Study Tue, 27 Mar 2012 15:07:32 +0000 In recent years, the treatment of moderate to severe psoriasis has benefited from the development of targeted biologicals. Assessing this new class of drugs calls for precise modalities of severity/improvement ratings of the disease. Bioengineering-driven dermometrology aims at improving objective and quantitative assessments of disease severity and treatment efficacy. Skin capacitance mapping/imaging is one of those emerging methods. Among its clinical applications, psoriasis capacitance mapping (PCM) was introduced in order to assess both skin scaliness and water trapping inside the stratum corneum (inflammatory serum deposits) on lesional skin. PCM was used for assessing the therapeutic effects of ustekinumab on target lesions of 5 psoriatic patients. The reduction in the inflammatory dampness of the stratum corneum was conveniently seen after a 1-month ustekinumab treatment. The present pilot study suggests that PCM could be used as a fast and convenient method for assessing the anti-inflammatory efficacy of ustekinumab and other biotherapies. Claudine Piérard-Franchimont and Gérald E. Piérard Copyright © 2012 Claudine Piérard-Franchimont and Gérald E. Piérard. All rights reserved. Nanofibers Offer Alternative Ways to the Treatment of Skin Infections Wed, 28 Jul 2010 10:00:45 +0000 Injury to the skin causes a breach in the protective layer surrounding the body. Many pathogens are resistant to antibiotics, rendering conventional treatment less effective. This led to the use of alternative antimicrobial compounds, such as silver ions, in skin treatment. In this review nanofibers, and the incorporation of natural antimicrobial compounds in these scaffolds, are discussed as an alternative way to control skin infections. Electrospinning as a technique to prepare nanofibers is discussed. The possibility of using these structures as drug delivery systems is investigated. T. D. J. Heunis and L. M. T. Dicks Copyright © 2010 T. D. J. Heunis and L. M. T. Dicks. All rights reserved. Role of p53 and CDKN2A Inactivation in Human Squamous Cell Carcinomas Sun, 22 Apr 2007 00:00:00 +0000 p53 tumor suppressor gene is the most commonly mutated gene in human and mouse cancers. Disruption of the p53 and Rb pathways is a fundamental trend of most human cancer cells. Inactivation of CDKN2A can lead to deregulation of these two pathways. Genetic abnormalities in CDKN2A gene have been well documented in human melanoma but their involvement in human nonmelanoma skin cancer (NMSC) and in particular in squamous cell carcinoma (SCC) is less clear. Several studies have shown that human SCCs harbour unique mutations in the p53 gene as well as inactivation of the CDKN2A gene. While mutations in the p53 gene are induced by UV radiation and represent tumor initiating events, the majority of alterations detected in the CDKN2A gene do not appear to be UV-dependent. In conclusion, in addition to p53 mutations, silencing of the CDKN2A gene might play a significant role in SCC development. Alessia Pacifico and Giovanni Leone Copyright © 2007 Alessia Pacifico and Giovanni Leone. All rights reserved. HLA Allele Associations and V-Beta T-Lymphocyte Expansions in Patients With Psoriasis, Harboring Toxin-Producing Staphylococcus aureus Mon, 01 Jan 1900 00:00:00 +0000 HLA alleles have been associated with psoriasis. Toxin-producing strains of Staphylococcus aureus behave as superantigens, and if present in patients, might play a role in the exacerbation of psoriatic lesions by activating certain V-beta (Vβ) T-lymphocyte subsets. Allele frequencies in 22 patients and 22 controls (alleles determined by DNA/SSP typing) were used to calculate a relative risk of 4.7 (P<.05) for HLA-Cw6. S aureus was isolated from the throat of 11 patients. Enterotoxins A and C were detected by agglutination in the culture filtrate of one isolate. The enterotoxin A and/or C genes were detected by PCR in 9 isolates, and transcripts were detected by RT-PCR in 7 of them. None of the isolates from controls harbored enterotoxin genes. Vβ expansions were detected by RT-PCR in all 22 patients. Low or no Vβ expansions were obtained in controls. The association of HLA-Cw6 with psoriasis in Lebanese concurs with that reported for other ethnic groups. Toxin-producing isolates that colonize patients might play a role in the exacerbation of psoriatic lesions. Rola Ajib, Lori Janbazian, Elias Rahal, Ghassan M. Matar, Shukrallah Zaynoun, Abdul-Ghani Kibbi, and Alexander M. Abdelnoor Copyright © 2005 Hindawi Publishing Corporation. All rights reserved.