Tuberculosis Research and Treatment http://www.hindawi.com The latest articles from Hindawi Publishing Corporation © 2015 , Hindawi Publishing Corporation . All rights reserved. Prevalence of Tuberculosis, Drug Susceptibility Testing, and Genotyping of Mycobacterial Isolates from Pulmonary Tuberculosis Patients in Dessie, Ethiopia Tue, 09 Jun 2015 16:10:50 +0000 http://www.hindawi.com/journals/trt/2015/215015/ Due to their initially seemingly high cost, timely diagnosis and effective treatment of tuberculosis (TB) are usually hampered by lack or shortage of resources in many high TB burden countries. However, the benefits of effective treatment can eventually outweigh those of empirical treatment. Here, a cross-sectional study was conducted on samples from smear-positive new and retreatment TB patients. Data on sociodemographic and HIV status were collected. Samples were cultured for identification, conventional drug sensitivity testing, and molecular typing by deletion typing and spoligotyping. The results showed the youth were disproportionately affected. New cases were being treated following general treatment guidelines only. Monoresistance or multiple drug resistance was found in 16.5% of new patients. Spoligotyping showed that there were 44 patterns with families H3 and T1 (lineage 4) and CAS-Delhi (lineage 3) being dominant. Some rare patterns from lineage 7 were also found. Spoligotype pattern, HIV positivity, and previous treatment were not associated with drug resistance. That the vast majority of the patients were new cases and young and the large number of these patients with mono- or multiple drug resistance indicate that most TB cases are due to recent transmissions and that urgent actions are needed to curb the transmissions. Minwuyelet Maru, Solomon H. Mariam, Tekle Airgecho, Endalamaw Gadissa, and Abraham Aseffa Copyright © 2015 Minwuyelet Maru et al. All rights reserved. Comparison of Xpert MTB/RIF Assay and the Conventional Sputum Microscopy in Detecting Mycobacterium tuberculosis in Northern Thailand Thu, 30 Apr 2015 17:23:14 +0000 http://www.hindawi.com/journals/trt/2015/571782/ Background. Despite low sensitivity in detection of Mycobacterium tuberculosis, sputum acid-fast smear remains the main diagnostic method. This study aimed to compare the diagnostic performance of Xpert MTBRIF assay versus conventional sputum acid-fast smear. Materials and Methods. A cross-sectional study was conducted at Chiang Mai University Hospital, Thailand. Patients who were ≥15 years old and had clinically suspected pulmonary tuberculosis were included. Results. 109 specimens from 57 patients were included. Using MGIT sputum culture as a reference standard, the sensitivity (SEN) and specificity (SPEC) for Xpert were 95.3% (95% CI, 84.2%, 99.4%) and 86.4% (95% CI, 75.7%, 93.6%). The SEN and SPEC for sputum acid-fast smear were 60.5% (95% CI, 44.4%, 75.0%) and 98.5% (95% CI, 91.8%, 100%). Xpert had significantly higher sensitivity ( value < 0.001) and lower specificity ( value = 0.022) than sputum acid-fast smear. Among 43 culture-proven M. tuberculosis specimens, sensitivity of Xpert was 100% (95% CI, 86.7%, 100%) in acid-fast positive smears () and 88.2% (95% CI, 63.5%, 98.5%) in acid-fast negative smears (). Conclusions. The good sensitivity and specificity of Xpert assay in detecting M. tuberculosis from sputum specimens may help in early diagnosis and treatment of pulmonary tuberculosis, particularly among patients who had acid-fast negative sputum smear. Kanokwan Pinyopornpanish, Romanee Chaiwarith, Chansom Pantip, Rassamee Keawvichit, Kanlaya Wongworapat, Phadungkiat Khamnoi, Khuanchai Supparatpinyo, and Thira Sirisanthana Copyright © 2015 Kanokwan Pinyopornpanish et al. All rights reserved. Multiplex Analysis of Pro- or Anti-Inflammatory Serum Cytokines and Chemokines in relation to Gender and Age among Tanzanian Tuberculous Lymphadenitis Patients Tue, 28 Apr 2015 12:22:06 +0000 http://www.hindawi.com/journals/trt/2015/561490/ Objectives. Tuberculous lymphadenitis is the most common form of extrapulmonary tuberculosis (TB) with a female and paediatric preponderance, postulated to be due to differences in the immune response. The aim of this study was to analyze the differences in the serum cytokine levels of tuberculous lymphadenitis patients with respect to age and gender. Methods. A multiplex bead-based enzyme-linked immunosorbent assay was used to measure IFN-γ, TNF-α, GM-CSF, IL-1β, IL-2, IL-4, IL-5, IL-6, IL-8, IL-10, IL-12, IL-15, and IL-17 levels in sera of patients and healthy controls . Results. Levels of IFN-γ, TNF-α, GM-CSF, IL-1β, IL-2, IL-4, and IL-6 were higher in adult patients than in controls, while those of IL-12 were lower . Children had lower levels of TNF-α, GM-CSF, and IL-5 and higher levels of IL-2 compared with adult patients . The male adult patients had higher levels of IL-17 and lower levels of IL-12 compared with female adult patients .  Conclusion. There were significant differences in the levels of circulating cytokines with respect to gender and age. Children had generally lower levels of cytokines as compared to adults, which could make them more susceptible. Findings do not support that female preponderance is due to differences in immune response. Tehmina Mustafa, Karl Albert Brokstad, Sayoki G. Mfinanga, and Harald G. Wiker Copyright © 2015 Tehmina Mustafa et al. All rights reserved. The Application of GeneXpert MTB/RIF for Smear-Negative TB Diagnosis as a Fee-Paying Service at a South Asian General Hospital Wed, 08 Apr 2015 13:12:52 +0000 http://www.hindawi.com/journals/trt/2015/102430/ The GeneXpert MTB/RIF assay (Xpert) is a novel automated diagnostic tool for tuberculosis but its optimal placement in the healthcare system has not been determined. The objective of this study was to determine the possibility of additional case detection for pulmonary tuberculosis (PTB) by offering Xpert to smear-negative patients in a low-HIV burden setting with no Mycobacterium tuberculosis (M.tb.) culture facilities. Patients routinely presenting with symptoms suggestive of PTB with negative smears were offered single Xpert test on a fee-paying basis. Data were retrospectively reviewed to determine case detection in patients tested from February to December 2013. Symptoms associated with a positive test were analysed to determine if refinement of clinical criteria would reduce unnecessary testing. 258 smear-negative patients were included and M.tb. was detected in 55 (21.32%, ). Using standard clinical assessment for selection, testing 5 patients detected one case of smear-negative PTB. These results demonstrate that fee-paying Xpert service in low-income setting can increase TB case confirmation substantially and further systematic studies of health economic implications should be conducted to determine optimal implementation models to increase access to Xpert in low- and middle-income countries. Poojan Shrestha, Amit Arjyal, Maxine Caws, Krishna Govinda Prajapati, Abhilasha Karkey, Sabina Dongol, Saruna Pathak, Shanti Prajapati, and Buddha Basnyat Copyright © 2015 Poojan Shrestha et al. All rights reserved. Determinants of Pulmonary Tuberculosis among Inmates at Mangaung Maximum Correctional Facility in Bloemfontein, South Africa Tue, 17 Mar 2015 09:38:49 +0000 http://www.hindawi.com/journals/trt/2015/752709/ Introduction. Correctional facilities house large number of inmates who are at high risk of developing tuberculosis (TB); however factors associated with TB among inmates at Mangaung Correctional Centre have not been studied. Study Population and Methods. We undertook a case control study and reviewed a total of 1140 medical records of inmates treated for TB between 2009 and 2010. Cases were selected randomly from the medical records of inmates who were treated. Data collected were analysed using STATA version 12.0 and determinants of TB were evaluated using multiple logistic regression analyses. Factors with were considered significant. Results. Prevalence of TB was 8.8% and 52% of inmates with TB were aged 31–40 years; 58% of the TB cases were HIV positive and 34% of them had CD4 cell count 350 cells/mm3. Factors associated with TB among inmates were HIV coinfection (OR: 4.2; 95% CI: 2.64–7.00); previous history of TB disease (OR: 3.58; 95% CI: 2.25–5.70); and smoking (OR: 2.1; 95% CI: 1.16–3.81). Conclusion. Interventions to improve TB detection such as regular screening of inmates with such factors need to be reinforced to control transmission of TB among inmates and the community. Peter Nyasulu, Serame Mogoere, Teye Umanah, and Geoffrey Setswe Copyright © 2015 Peter Nyasulu et al. All rights reserved. Evaluation of a U.S. Public Health Laboratory Service for the Molecular Detection of Drug Resistant Tuberculosis Sun, 22 Feb 2015 09:16:29 +0000 http://www.hindawi.com/journals/trt/2015/701786/ Crucial to interrupting the spread of tuberculosis (TB) is prompt implementation of effective treatment regimens. We evaluated satisfaction, comfort with interpretation, and use of molecular results from a public health service provided by the Centers for Disease Control and Prevention (CDC) for the molecular detection of drug resistant Mycobacterium tuberculosis complex (MTBC). An electronic survey instrument was used to collect information anonymously from U.S. Public Health Laboratories (PHL) that submitted at least one isolate of MTBC to CDC from September 2009 through February 2011. Over 97% of those responding expressed satisfaction with the turnaround time for receiving results. Twenty-six PHL (74%) reported molecular results to healthcare providers in less than two business days. When comparing the molecular results from CDC with their own phenotypic drug susceptibility testing, 50% of PHL observed discordance. No respondents found the molecular results difficult to interpret and 82% were comfortably discussing them with TB program officials and healthcare providers. Survey results indicate PHL were satisfied with CDC’s ability to rapidly provide interpretable molecular results for isolates of MTBC submitted for determination of drug resistance. To develop educational materials and strategies for service improvement, reasons for discordant results and areas of confusion need to be identified. Mitchell A. Yakrus, Beverly Metchock, and Angela M. Starks Copyright © 2015 Mitchell A. Yakrus et al. All rights reserved. Arginine Adjunctive Therapy in Active Tuberculosis Tue, 03 Feb 2015 14:01:21 +0000 http://www.hindawi.com/journals/trt/2015/205016/ Background. Dietary supplementation has been used as a mechanism to augment the immune system. Adjunctive therapy with L-arginine has the potential to improve outcomes in active tuberculosis. Methods. In a randomized clinical trial 63 participants with smear-positive pulmonary tuberculosis in Markazi Province of Iran were given arginine or placebo for 4 weeks in addition to conventional chemotherapy. The final treatment success, sputum conversion, weight gain, and clinical symptoms after one and two months were considered as primary outcomes and secondary outcomes were ESR, CRP, and Hg. Data were collected and analyzed with SPSS software (ver. 18). Results. Arginine supplementation reduced constitutional symptoms () in patients with smear-positive TB at the end of the first month of treatment. Arginine treated patients had significantly increased BMI at the end of the first and second months of treatment ( and ) and a reduced CRP at the end of the first month of treatment () versus placebo group. Conclusion. Arginine is useful as an adjunctive therapy in patients with active tuberculosis, in which the effects are more likely mediated by the increased production of nitric oxide and improved constitutional symptoms and weight gain. This trial is registered with Clinical Trials Registry of Iran: IRCT201211179855N2. Aliasghar Farazi, Omid Shafaat, Masoomeh Sofian, and Manijeh Kahbazi Copyright © 2015 Aliasghar Farazi et al. All rights reserved. Evolution of M. bovis BCG Vaccine: Is Niacin Production Still a Valid Biomarker? Wed, 28 Jan 2015 08:44:10 +0000 http://www.hindawi.com/journals/trt/2015/957519/ BCG vaccine is usually considered to be safe though rarely serious complications have also been reported, often incriminating contamination of the seed strain with pathogenic Mycobacterium tuberculosis. In such circumstances, it becomes prudent to rule out the contamination of the vaccine seed. M. bovis BCG can be confirmed by the absence of nitrate reductase, negative niacin test, and resistance to pyrazinamide and cycloserine. Recently in India, some stocks were found to be niacin positive which led to a national controversy and closer of a vaccine production plant. This prompted us to write this review and the comparative biochemical and genotypic studies were carried out on the these contentious vaccine stocks at the Indian vaccine plant and other seeds and it was found that some BCG vaccine strains and even some strains of M. bovis with eugenic-growth characteristics mainly old laboratory strains may give a positive niacin reaction. Most probably, the repeated subcultures lead to undefined changes at the genetic level in these seed strains. These changing biological characteristics envisage reevaluation of biochemical characters of existing BCG vaccine seeds and framing of newer guidelines for manufacturing, production, safety, and effectiveness of BCG vaccine. Sarman Singh, Manoj Kumar, and Pragati Singh Copyright © 2015 Sarman Singh et al. All rights reserved. Five-Year Assessment of Time of Sputum Smears Conversion and Outcome and Risk Factors of Tuberculosis Patients in Central Iran Wed, 14 Jan 2015 09:31:10 +0000 http://www.hindawi.com/journals/trt/2015/609083/ Objective. To evaluate risk factors which influence sputum smear conversion, outcome, and trends of conversion of sputum smear during 5 years and compare outcomes in patients with different regimens. Methods. In a retrospective cohort study, all patients with sputum smear positive tuberculosis were evaluated for comorbidities and demographic, microbiological, and therapeutic data and outcome. Smear examinations were performed at the beginning, at 2 months for CAT I, at 3 months for CAT II, at the end of second month of maintenance phase, and at the end of treatment. Results. This study enrolled 211 sputum smear positive patients, but 189 patients who completed the intensive phase of treatment were evaluated. Sputum smear of 158 patients converted at the end of intensive phase (83.6). Univariate analysis indicated that the risk of a persistent positive smear at the end of intensive phase was greater in diabetic patients ((odds 4.038, 95% CI 1.123–14.516) ), and also a 3+bacillary load had risk of 2.933-fold ((95% CI 1.278–6.732) ). Overall rate of unfavorable outcome was 20.9%. Factors associated with unfavorable outcome were age (P value 0.000), male gender (P value 0.027), diabetes (P value 0.000), and delayed conversion of sputum at the end of intensive phase (P value 0.000). Outcome for different regimens was not different significantly. Two specimens were isoniazid resistant. Conclusions. We suggest supervised treatment and care for diabetic patients and those with higher bacillary load. Paying attention to early diagnosis of tuberculosis in the elderly to reduce poor outcome and further measures to prevent transfer-out could improve the success rate. Fatemah Behnaz, Mahmoud Mohammadzadeh, and Golnaz Mohammadzade Copyright © 2015 Fatemah Behnaz et al. All rights reserved. Mefloquine and Its Enantiomers Are Active against Mycobacterium tuberculosis In Vitro and in Macrophages Thu, 11 Dec 2014 08:54:12 +0000 http://www.hindawi.com/journals/trt/2014/530815/ Objective. Tuberculosis is a serious problem of public health. The increase on the number of clinical cases of tuberculosis infected with multidrug resistant (MDR) M. tuberculosis calls for the development of novel therapy. Design. We investigated the effect of mefloquine and two enantiomers, (+)erythro-mefloquine and (+)threo-mefloquine against M. tuberculosis strains in the environment resembling the aspects of the granuloma environment and in macrophages. Results. The results suggest that mefloquine (racemic mixture) and (+)erythro-mefloquine have bactericidal activity against M. tuberculosis strains both in acidic, low oxygen tension and in macrophages. The activity, however, was impaired under increased osmolarity. Conclusion. Identification of the target for mefloquine in the pathogen will allow for the development of novel drugs with antituberculosis activity. Luiz E. Bermudez and Laura Meek Copyright © 2014 Luiz E. Bermudez and Laura Meek. All rights reserved. Adverse Reactions to Antituberculosis Drugs in Iranian Tuberculosis Patients Mon, 24 Nov 2014 12:48:51 +0000 http://www.hindawi.com/journals/trt/2014/412893/ Background. Antituberculosis multidrug regimens have been associated with increased incidence of adverse drug reactions (ADRs). This study aimed to determine the incidence and associated factors of ADRs due to antituberculosis therapy. Methods. This is a retrospective cross-sectional study on tuberculosis patients who were treated in tuberculosis clinics in Markazi province in Iran. The information contained in the medical files was extracted and entered into the questionnaire. Data was descriptively analyzed by using statistical package for social sciences (SPSS 18). Results. A total of 940 TB patients of 1240 patients’ medical records available in 10 medical offices were included in this study. Of the 563 ADRs found in this study, 82.4% were considered minor reactions and 17.6% were major reactions. No death from antituberculosis ADR was observed. We found that the risk of major ADRs was higher in females (), age >50 y (), coinfection with HIV (), smoking (), retreatment TB (), and comorbidities (). Conclusions. This study showed that severe side effects of anti-TB drugs are common in patients who have risk factors of ADRs and they should be followed up by close monitoring. Aliasghar Farazi, Masoomeh Sofian, Mansoureh Jabbariasl, and Sara Keshavarz Copyright © 2014 Aliasghar Farazi et al. All rights reserved. Extensive Genetic Diversity among Clinical Isolates of Mycobacterium tuberculosis in Central Province of Iran Wed, 19 Nov 2014 08:05:28 +0000 http://www.hindawi.com/journals/trt/2014/195287/ Human tuberculosis caused by Mycobacterium tuberculosis (Mtb) remains a significant disease in many countries. According to Iran’s borders with Afghanistan and Pakistan, which are among the 22 high burden countries around the world, this study was conducted to analyze the current molecular epidemiology of tuberculosis and survey genetic diversity of Mtb strains in Markazi Province in center of Iran. In this experimental study, 75 sputum specimens and one gastric lavage from all smear-positive TB patients admitted to the public hospitals across the Markazi Province were cultured on specific mycobacterial culture media. Genomic DNA was digested by PvuII and transferred to positively charged nylon membrane by southern blotting method and hybridization by PGRS and DR probes. Genotyping of the isolates by PGRS-RFLP and DR-RFLP displayed a wide range of genetic diversity as 25 and 26 genotypes were identified, respectively. Generally speaking, despite the relatively limited number of isolates in the study, high age of patients and also large heterogeneity found in the setting are both in opposition to active circulation of Mtb strains between patients under study either Iranian or Afghan nationals. Thus, it seems that reactivation of latent infection has had the main role in the spread of tuberculosis. Saman Soleimanpour, Daryoush Hamedi Asl, Keyvan Tadayon, Ali Asghar Farazi, Rouhollah Keshavarz, Kioomars Soleymani, Fereshteh Sadat Seddighinia, and Nader Mosavari Copyright © 2014 Saman Soleimanpour et al. All rights reserved. Profile, Outcomes, and Determinants of Unsuccessful Tuberculosis Treatment Outcomes among HIV-Infected Tuberculosis Patients in a Nigerian State Sun, 16 Nov 2014 07:52:01 +0000 http://www.hindawi.com/journals/trt/2014/202983/ Background. Few studies have evaluated the rate of tuberculosis (TB)/human immunodeficiency virus (HIV) coinfection and the determinants of its treatment outcomes in Africa. We aimed to determine the predictors of unsuccessful treatment outcomes in HIV-infected tuberculosis patients in Nigeria. Methods. A retrospective cohort study design was used to assess adult TB/HIV patients who registered for TB treatment in two health facilities in Ebonyi State, Southeast Nigeria, between January 2011 and December 2012. Predictors of unsuccessful treatment outcomes were determined using multivariable logistic regression analysis. Results. Of 1668 TB patients, 342 (20.5%) were HIV coinfected. Of these, 195 (57%) had smear-negative pulmonary TB and 11 (3.2%) had extrapulmonary TB. Overall, 225 (65.8%) patients achieved successful outcomes, while 117 (34.2%) had unsuccessful outcomes. The unsuccessful treatment outcomes were due to “default” (9.9%), “death” (19%), “treatment failure” (1.5%), and “transferring out” (3.8%). Independent determinants for unsuccessful outcomes were receiving care at a public facility and noninitiation of antiretroviral therapy. Conclusion. There is need for the reevaluation of the quality of public sector treatment services provided for TB/HIV patients as well as further expansion of TB/HIV collaborative activities in rural areas, and interventions to reduce mortality and default rates among TB/HIV patients are urgently needed in Nigeria. Daniel Chukwunweolu Oshi, Sarah Nakalema Oshi, Isaac Alobu, and Kingsley Nnanna Ukwaja Copyright © 2014 Daniel Chukwunweolu Oshi et al. All rights reserved. Photovoice: A Novel Approach to Improving Antituberculosis Treatment Adherence in Pune, India Tue, 07 Oct 2014 09:21:09 +0000 http://www.hindawi.com/journals/trt/2014/302601/ We compared antituberculosis treatment (ATT) adherence and outcomes among patients exposed to Photovoice (video of previously cured TB patients sharing experiences about TB treatment) versus those not exposed. The odds of successful outcome (i.e., cured or completing treatment) for the 135 patients who watched Photovoice were 3 times greater (odds ratio: 2.8; 95% CI: 1.3–6.1) than for patients who did not watch Photovoice. The comparison group, on average, missed more doses (10.9 doses; 95% CI: 6.6–11.1) than the intervention group who saw Photovoice (5.5 doses; 95% CI: 3.7–6.1). Using Photovoice at initiation of ATT has the potential to improve treatment adherence and outcomes. Sangita C. Shelke, Prakash S. Adhav, Patrick K. Moonan, Matthew Willis, Malan A. Parande, Srinath Satyanarayana, Vikas D. Kshirsagar, and Smita Ghosh Copyright © 2014 Sangita C. Shelke et al. All rights reserved. Treatment Outcome of Tuberculosis Patients Registered at DOTS Centre in Ogbomoso, Southwestern Nigeria: A 4-Year Retrospective Study Sun, 28 Sep 2014 14:01:58 +0000 http://www.hindawi.com/journals/trt/2014/201705/ Background Information. Monitoring outcome of tuberculosis treatment and understanding the specific reasons for unsuccessful treatment outcome are important in evaluating the effectiveness of tuberculosis control program. This study investigated tuberculosis treatment outcomes and predictors for unsuccessful treatment outcome in Ogbomoso town, Southwestern Nigeria. Methodology. Medical records of all tuberculosis patients registered from January 2008 to December 2011 in 5 Local Government areas, Ogbomoso, Southwestern Nigeria, were reviewed. Treatment outcome and tuberculosis type were categorized according to the national tuberculosis control guideline. Bivariate analysis was used to analyse the association between treatment outcome and potential predictor variables. Results. Out of the 965 total TB patients (579 males and 386 females) with mean age 42.4 ± 1.9 years, 866 (89.74%) were categorized as pulmonary tuberculosis and 109 (11.30%) as extrapulmonary tuberculosis. Treatment outcome among total 914 subjects was as follows: 304 (33.26%) patients got cured, 477 (52.19%) completed treatment, 87 (9.52%) died, 9 (0.98%) defaulted, and 1 (0.11%) failed treatment while 36 (3.94%) were transferred out. Higher treatment success rate was associated with those on Category 1 treatment (). Conclusion. The treatment success rate of tuberculosis patients was high (85.45%) compared to national target. However, certain proportion of patients died (9.52%) and defaulted (0.98%), which is a serious public health concern that needs to be addressed urgently. Olarewaju Sunday, Olanrewaju Oladimeji, Folorunso Ebenezer, Babatunde Akintunde, Temitayo-Oboh Abiola, Abdulsalam Saliu, and Oluwatoyin Abiodun Copyright © 2014 Olarewaju Sunday et al. All rights reserved. Listening to Those at the Frontline: Patient and Healthcare Personnel Perspectives on Tuberculosis Treatment Barriers and Facilitators in High TB Burden Regions of Argentina Sun, 28 Sep 2014 09:53:26 +0000 http://www.hindawi.com/journals/trt/2014/135823/ Purpose. In Argentina, tuberculosis (TB) control measures have not achieved key treatment targets. The purpose of this study was to identify modes of treatment delivery and explore patient and healthcare personnel perceptions of barriers and facilitators to treatment success. Methods. We used semistructured group and individual interviews for this descriptive qualitative study. Eight high burden municipalities were purposively selected. Patients in treatment for active TB , multidisciplinary TB team members , and TB program directors at local, municipal, regional, and national levels were interviewed. Interviews were recorded, transcribed verbatim, and analyzed using thematic analysis. Results. Modes of treatment delivery varied across municipalities and types of healthcare facility and were highly negotiated with patients. Self-administration of treatment was common in hospital-based and some community clinics. Barriers to TB treatment success were concentrated at the system level. This level relied heavily on individual personal commitment, and many system facilitators were operating in isolation or in limited settings. Conclusions. We outline experiences and perspectives of the facilitating and challenging factors at the individual, structural, social, and organizational levels. Establishing strong patient-healthcare personnel relationships, responding to patient needs, capitalizing on community resources, and maximizing established decentralized system could mitigate some of the barriers. Sarah J. Iribarren, Fernando Rubinstein, Vilda Discacciati, and Patricia F. Pearce Copyright © 2014 Sarah J. Iribarren et al. All rights reserved. In Silico Antitubercular Activity Analysis of Benzofuran and Naphthofuran Derivatives Thu, 11 Sep 2014 09:21:55 +0000 http://www.hindawi.com/journals/trt/2014/697532/ For the human health, Mycobacterium tuberculosis (MTB) is the deadliest enemy since decades due to its multidrug resistant strains. During latent stage of tuberculosis infection, MTB consumes nitrate as the alternate mechanism of respiration in the absence of oxygen, thus increasing its survival and virulence. NarL is a nitrate/nitrite response transcriptional regulatory protein of two-component signal transduction system which regulates nitrate reductase and formate dehydrogenase for MTB adaptation to anaerobic condition. Phosphorylation by sensor kinase (NarX) is the primary mechanism behind the activation of NarL although many response regulators get activated by small molecule phospho-donors in the absence of sensor kinase. Using in silico approach, the molecular docking of benzofuran and naphthofuran derivatives and dynamic study of benzofuran derivative were performed. It was observed that compound Ethyl 5-bromo-3-ethoxycarbonylamino-1-benzofuran-2-carboxylate could be stabilized at the active site for over 10 ns of simulation. Here we suggest that derivatives of benzofuran moiety can lead to developing novel antituberculosis drugs. Prashantha Karunakar, Chamarahalli Ramakrishnaiyer Girija, Venkatappa Krishnamurthy, Venkatarangaiah Krishna, and Kunigal Venugopal Shivakumar Copyright © 2014 Prashantha Karunakar et al. All rights reserved. The Quality of Tuberculosis Services in Health Care Centres in a Rural District in Uganda: The Providers’ and Clients’ Perspective Sun, 07 Sep 2014 09:21:56 +0000 http://www.hindawi.com/journals/trt/2014/685982/ Quality of care plays an important role in the status of tuberculosis (TB) control, by influencing timely diagnosis, treatment adherence, and treatment completion. In this study, we aimed at establishing the quality of TB service care in Kamuli district health care centres using Donabedian structure, process, and outcomes model of health care. A cross-sectional study was conducted in 8 health care facilities, among 20 health care workers and 392 patients. Data was obtained using face-to-face interviews, an observation guide, a check list, and record review of the TB unit and laboratory registers. Data entry and analysis were done using EPI INFO 2008 and STATA 10 versions, respectively. A high number 150 (87.21%) of TB patients were not aware of all the signs to stop TB medication, and 100 (25.51%) patients received laboratory results after a period of 3–5 working days. The major challenges faced by health workers were poor attitude of fellow health workers, patients defaulting treatment, and fear of being infected with TB. One of the worst performance indicators was low percentage of cure. Comprehensive strengthening of the health system focusing on quality of support supervisions, patient follow up, promoting infection control measures, and increasing health staffing levels at health facilities is crucial. Lilian Bulage, Juliet Sekandi, Omar Kigenyi, and Ezekiel Mupere Copyright © 2014 Lilian Bulage et al. All rights reserved. Source Case Investigation for Children with TB Disease in Pune, India Wed, 27 Aug 2014 08:09:20 +0000 http://www.hindawi.com/journals/trt/2014/182836/ Setting. Contact tracing is broadly encouraged for tuberculosis (TB) control. In many high-burden countries, however, little effort is made to identify contacts of newly diagnosed TB patients. This failure puts children, many of whom live in poor crowded communities, at special risk. Objectives. To perform source-case investigations for 50 pediatric TB cases in Pune, India. Design. A descriptive cross-sectional observational study of pediatric TB cases < 5 years of age. Information was collected about the index case and household contacts. Results. In 15 (30%) of the 50 pediatric index cases, the household contained known TB contacts, 14 (86%) of whom were adults. Prior to their own diagnosis of TB, only one of the 15 pediatric index cases who met criteria for isoniazid preventive therapy received it. The index cases with known household TB contacts had a longer delay in initiating TB treatment than those without TB contacts (17.5 versus 2 days; ). Use of contact tracing identified 14 additional household TB suspects, 8 (57%) of whom were children. Conclusions. This study identified missed opportunities for TB prevention, as contact tracing is poorly implemented in resource-limited countries, like India. Further strategies to improve the implementation of TB prevention, especially in young children, are urgently needed. Debalina De, Aarti Kinikar, P. S. Adhav, Sunanda Kamble, Prasanna Sahoo, Hari Koli, Savita Kanade, Vidya Mave, Nishi Suryavanshi, Nikhil Gupte, Amita Gupta, and Jyoti Mathad Copyright © 2014 Debalina De et al. All rights reserved. Nurses’ Roles and Experiences with Enhancing Adherence to Tuberculosis Treatment among Patients in Burundi: A Qualitative Study Tue, 19 Aug 2014 08:47:42 +0000 http://www.hindawi.com/journals/trt/2014/984218/ Background. In TB control, poor treatment adherence is a major cause of relapse and drug resistance. Nurses have a critical role in supporting patients in TB treatment process. Yet, very little research has been done to inform policymakers and practitioners on nurses’ experiences of treatment adherence among patients with TB. Aim. To describe nurses’ experiences of supporting treatment adherence among patients with tuberculosis in Burundi. Method. The study adopted qualitative approach with a descriptive design. A purposive sampling was performed. Eight nurses were selected from two TB treatment centers in Burundi. Content analysis was used to analyze the data. Result. According to the nurses, most patients complete their treatment. Educating patients, providing the medication, observing and following up treatment, and communicating with the patients were the key tasks by nurses to support adherence. Causes for interruption were medication-related difficulties, poverty, and patients’ indiscipline. Treatment adherence could also be affected by patients’ and nurses’ feelings. Providing transportation and meals could enhance treatment compliance. Conclusion. Nurses are critical resources to TB treatment success. In a poverty stricken setting, nurses’ work could be facilitated and adherence further could be enhanced if socioeconomic problems (transportation and nutritional support) were alleviated. Marie Carlsson, Stina Johansson, Remy-Paul Bosela Eale, and Berthollet Bwira Kaboru Copyright © 2014 Marie Carlsson et al. All rights reserved. Pharmacovigilance and Moroccan Tuberculosis Public Program: Current Situation Thu, 12 Jun 2014 00:00:00 +0000 http://www.hindawi.com/journals/trt/2014/626797/ The objective of this work is to demonstrate the interest of integration of pharmacovigilance in Moroccan Tuberculosis Control Program (MTCP). Design and Data Collection. The integration of pharmacovigilance in MTCP was conducted in October 2012 with the Global Fund support. We compared the reports notified before and after this integration (period 1: January 2010–October 2012; period 2: October 2012–December 2013). The detection of signals was based on the Information Component available in VigiMine. We used the SPSS version 10.0 and MedCalc version 7.3 for data analysis. Results. The average number of spontaneous reports increased from 3.6 to 37.4 cases/month (). The average age was years; the sex ratio was 0.8. Hepatic reactions (32.7%) predominated during the first period, while skin reactions (24.1%) were in the second period (), and 40.9% of cases in the first period were serious against 15.8% in second period (). Nine signals were generated (hepatic enzyme increase, cholestasis, jaundice, arthralgia, acne, lower limb edema, pruritus, skin rashes, and vomiting). Conclusion. The integration of pharmacovigilance in Moroccan Tuberculosis Control Program improved the management of ADRs and detected new signals of antituberculosis drugs. Driss Soussi Tanani, Amina Tebaa, Raja Benkirane, Kenza Bennani, Ghali Iraqi, Abdelmajid Soulaymani, and Rachida Soulaymani Bencheikh Copyright © 2014 Driss Soussi Tanani et al. All rights reserved. Prevalence of Extensively Drug Resistant Tuberculosis among Archived Multidrug Resistant Tuberculosis Isolates in Zimbabwe Tue, 20 May 2014 08:26:22 +0000 http://www.hindawi.com/journals/trt/2014/349141/ We conducted a cross-sectional study of second line drug resistance patterns and genetic diversity of MDR-TB isolates archived at the BRTI-TB Laboratory, Harare, between January 2007 and December 2011. DSTs were performed for second line antituberculosis drugs. XDR-TB strains were defined as MDR-TB strains with resistance to either kanamycin and ofloxacin or capreomycin and ofloxacin. Strain types were identified by spoligotyping. No resistance to any second line drugs was shown in 73% of the isolates, with 23% resistant to one or two drugs but not meeting the definition of XDR-TB. A total of 26 shared types were identified, and 18 (69%) matched preexisting shared types in the current published spoligotype databases. Of the 11 out of 18 clustered SITs, 4 predominant (>6 isolates per shared type) were identified. The most and least abundant types were SIT 1468 (LAM 11-ZWE) with 12 (18%) isolates and SIT 53 (T1) with 6 (9%) isolates, respectively. XDR-TB strains are rare in Zimbabwe, but the high proportion of “pre-XDR-TB” strains and treatment failure cases is of concern. The genetic diversity of the MDR-TB strains showed no significant association between SITs and drug resistance. Tichaona Sagonda, Lucy Mupfumi, Rumbidzai Manzou, Beauty Makamure, Mqondisi Tshabalala, Lovemore Gwanzura, Peter Mason, and Reggie Mutetwa Copyright © 2014 Tichaona Sagonda et al. All rights reserved. Gender-Related Barriers and Delays in Accessing Tuberculosis Diagnostic and Treatment Services: A Systematic Review of Qualitative Studies Sun, 11 May 2014 12:17:39 +0000 http://www.hindawi.com/journals/trt/2014/215059/ Background. Tuberculosis (TB) remains a significant global public health problem with known gender-related (male versus female) disparities. We reviewed the qualitative evidence (written/spoken narrative) for gender-related differences limiting TB service access from symptom onset to treatment initiation. Methods. Following a systematic process, we searched 12 electronic databases, included qualitative studies that assessed gender differences in accessing TB diagnostic and treatment services, abstracted data, and assessed study validity. Using a modified “inductive coding” system, we synthesized emergent themes within defined barriers and delays limiting access at the individual and provider/system levels and examined gender-related differences. Results. Among 13,448 studies, 28 studies were included. All were conducted in developing countries and assessed individual-level barriers; 11 (39%) assessed provider/system-level barriers, 18 (64%) surveyed persons with suspected or diagnosed TB, and 7 (25%) exclusively surveyed randomly sampled community members or health care workers. Each barrier affected both genders but had gender-variable nature and impact reflecting sociodemographic themes. Women experienced financial and physical dependence, lower general literacy, and household stigma, whereas men faced work-related financial and physical barriers and community-based stigma. Conclusions. In developing countries, barriers limiting access to TB care have context-specific gender-related differences that can inform integrated interventions to optimize TB services. Lakshmi Krishnan, Tokunbo Akande, Anita V. Shankar, Katherine N. McIntire, Celine R. Gounder, Amita Gupta, and Wei-Teng Yang Copyright © 2014 Lakshmi Krishnan et al. All rights reserved. Prognostic Factors in Tuberculosis Related Mortalities in Hospitalized Patients Wed, 07 May 2014 12:14:29 +0000 http://www.hindawi.com/journals/trt/2014/624671/ Setting. The study was undertaken at the Department of Pulmonology at a public, tertiary care centre in Karachi, Pakistan. Objectives. To evaluate factors concerned with in-hospital deaths in patients admitted with pulmonary tuberculosis (TB). Design. A retrospective case-control audit was performed for 120 patients hospitalised with pulmonary TB. Sixty of those discharged after treatment were compared to sixty who did not survive. Radiological findings, clinical indicators, and laboratory values were compared between the two groups to identify factors related to poor prognosis. Results. Factors concerned with in-hospital mortality listed late presentation of disease (), noncompliance to antituberculosis therapy (), smoking (), longer duration of illness prior to treatment (), and low body weight (). Most deaths occurred during the first week of admission () indicating late referrals as significant. Immunocompromised status and multi-drug resistance were not implicated in higher mortality. Conclusions. Poor prognosis was associated with noncompliance to therapy resulting in longer duration of illness, late patient referrals to care centres, and development of complications. Early diagnosis, timely referrals, and monitored compliance may help reduce mortality. Adherence to a more radically effective treatment regimen is required to eliminate TB early during disease onset. Ghazal Haque, Ashok Kumar, Fatima Saifuddin, Shafaq Ismail, Nadeem Rizvi, Shaista Ghazal, and Sadhna Notani Copyright © 2014 Ghazal Haque et al. All rights reserved. Treatment Outcome of Tuberculosis Patients at Enfraz Health Center, Northwest Ethiopia: A Five-Year Retrospective Study Mon, 05 May 2014 11:34:33 +0000 http://www.hindawi.com/journals/trt/2014/726193/ Objectives. The aim of this study was to assess treatment outcome and associated risk factors among TB patients registered for anti-TB treatment at Enfraz health center, northwest Ethiopia. Methods. A five-year retrospective data (2007–2011) of tuberculosis patients () registered for anti-TB treatment at Enfraz health center, northwest Ethiopia, were reviewed. Tuberculosis outcomes were following the WHO guidelines. Data were entered and analyzed using SPSS version 20. Results. Among 417 study participants, 95 (22.8%), 141 (33.8%), and 181 (43.4%) were smear-positive, smear-negative, and extrapulmonary tuberculosis patients, respectively. Of the 417 study participants, 206 (49.4%) were tested for HIV. The TB-HIV coinfection was 24/206 (11.7%). Seventeen study participants (4.2%) were transferred to other health facilities. Among the 400 study participants, 379 (94.8%) had successful treatment outcome (302 treatment completed and 77 cured). The overall death, default, and failure rates were 3.4%, 0.5%, and 1.2%, respectively. There was no significant association between sex, age, residence, type of TB, HIV status, and successful TB treatment outcome. Conclusion. Treatment outcome of patients who attended their anti-TB treatment at Enfraz health center was successful. Therefore, this treatment success rate should be maintained and strengthened to achieve the millennium development goal. Mengistu Endris, Feleke Moges, Yeshambel Belyhun, Eleni Woldehana, Ahmed Esmael, and Chandrashekhar Unakal Copyright © 2014 Mengistu Endris et al. All rights reserved. Barriers and Delays in Tuberculosis Diagnosis and Treatment Services: Does Gender Matter? Mon, 28 Apr 2014 11:35:03 +0000 http://www.hindawi.com/journals/trt/2014/461935/ Background. Tuberculosis (TB) remains a global public health problem with known gender-related disparities. We reviewed the quantitative evidence for gender-related differences in accessing TB services from symptom onset to treatment initiation. Methods. Following a systematic review process, we: searched 12 electronic databases; included quantitative studies assessing gender differences in accessing TB diagnostic and treatment services; abstracted data; and assessed study validity. We defined barriers and delays at the individual and provider/system levels using a conceptual framework of the TB care continuum and examined gender-related differences. Results. Among 13,448 articles, 137 were included: many assessed individual-level barriers (52%) and delays (42%), 76% surveyed persons presenting for care with diagnosed or suspected TB, 24% surveyed community members, and two-thirds were from African and Asian regions. Many studies reported no gender differences. Among studies reporting disparities, women faced greater barriers (financial: 64% versus 36%; physical: 100% versus 0%; stigma: 85% versus 15%; health literacy: 67% versus 33%; and provider-/system-level: 100% versus 0%) and longer delays (presentation to diagnosis: 45% versus 0%) than men. Conclusions. Many studies found no quantitative gender-related differences in barriers and delays limiting access to TB services. When differences were identified, women experienced greater barriers and longer delays than men. Wei-Teng Yang, Celine R. Gounder, Tokunbo Akande, Jan-Walter De Neve, Katherine N. McIntire, Aditya Chandrasekhar, Alan de Lima Pereira, Naveen Gummadi, Santanu Samanta, and Amita Gupta Copyright © 2014 Wei-Teng Yang et al. All rights reserved. Prevalence and Drug Resistance Patterns of Mycobacterium tuberculosis among New Smear Positive Pulmonary Tuberculosis Patients in Eastern Ethiopia Wed, 16 Apr 2014 09:36:46 +0000 http://www.hindawi.com/journals/trt/2014/753492/ The study aimed at determining the prevalence and drug resistance patterns of Mycobacterium tuberculosis among new smear positive pulmonary tuberculosis patients visiting TB diagnosis and treatment facilities at selected health facilities in eastern Ethiopia. A cross-sectional study was conducted between October 2011 and May 2013. A total of 408 new adult pulmonary TB patients (≥ 18 years) were enrolled in this study. Three consecutive sputum samples (spot, morning, and spot) were collected from each patient and transported to the Armauer Hansen Research Institute TB laboratory located in Addis Ababa for culture on Lowenstein Jensen slant media. DST was performed on 357 (87.5%) of the patient samples for isoniazid (H), rifampicin (R), ethambutol (E), and streptomycin (S) using the standard proportion method. The rate of resistance to any one drug was 23%. Any resistance to H, S, R, and E was 14%, 11.5%, 2.8%, and 0.3%, respectively. The highest proportion of monoresistance was observed against H (9.5%). MDRTB was detected in 1.1% of the patients. Any drug resistance was associated with HIV infection (COR = 3.7, 95% CI 1.905–7.222) (P = 0.000). Although the prevalence of MDRTB is relatively low in the study area, high prevalence of H resistance is a serious concern demanding close monitoring. Expanding diagnostic capacity for mycobacterial culture and DST is a vital step in this regard. Berhanu Seyoum, Meaza Demissie, Alemayehu Worku, Shiferaw Bekele, and Abraham Aseffa Copyright © 2014 Berhanu Seyoum et al. All rights reserved. Seasonality of Tuberculosis in Delhi, India: A Time Series Analysis Sun, 23 Mar 2014 12:39:28 +0000 http://www.hindawi.com/journals/trt/2014/514093/ Background. It is highly cost effective to detect a seasonal trend in tuberculosis in order to optimize disease control and intervention. Although seasonal variation of tuberculosis has been reported from different parts of the world, no definite and consistent pattern has been observed. Therefore, the study was designed to find the seasonal variation of tuberculosis in Delhi, India. Methods. Retrospective record based study was undertaken in a Directly Observed Treatment Short course (DOTS) centre located in the south district of Delhi. Six-year data from January 2007 to December 2012 was analyzed. Expert modeler of SPSS ver. 21 software was used to fit the best suitable model for the time series data. Results. Autocorrelation function (ACF) and partial autocorrelation function (PACF) at lag 12 show significant peak suggesting seasonal component of the TB series. Seasonal adjusted factor (SAF) showed peak seasonal variation from March to May. Univariate model by expert modeler in the SPSS showed that Winter’s multiplicative model could best predict the time series data with 69.8% variability. The forecast shows declining trend with seasonality. Conclusion. A seasonal pattern and declining trend with variable amplitudes of fluctuation were observed in the incidence of tuberculosis. Varun Kumar, Abhay Singh, Mrinmoy Adhikary, Shailaja Daral, Anita Khokhar, and Saudan Singh Copyright © 2014 Varun Kumar et al. All rights reserved. Acceptance of Provider Initiated HIV Testing and Counseling among Tuberculosis Patients in East Wollega Administrative Zone, Oromia Regional State, Western Ethiopia Thu, 20 Mar 2014 11:44:36 +0000 http://www.hindawi.com/journals/trt/2014/935713/ Human immunodeficiency virus (HIV) is a powerful risk factor for the development of tuberculosis. This study assessed the acceptance and associated factors that can affect provider initiated HIV testing and counseling (PITC) among tuberculosis patients at the East Wollega administrative zone, Oromia regional state, western Ethiopia, from January to August, 2010. A single population proportion formula is used to calculate the total sample size of 406 and the cluster sampling technique was used to select 13 health centers that provide PITC services. The sample size was proportionally allocated to each health center. The study participants were selected using a simple random sampling technique using the lottery method. Structured questionnaire was used for collection of sociodemographic data. From the total of study subjects, 399 (98.2%) TB patients were initiated for HIV test and 369 (92.5%) patients accepted the initiation. Of those, 353 (95.5%) patients had taken HIV test and received their results. According to the reviewed documents, the prevalence of HIV among tuberculosis (TB) patients in the study area was 137 (33.7%). The logistic regression result showed the PITC was significantly associated with their knowledge about HIV (AOR = 3.22, 95% CI: 1.3–7.97), self-perceived risk (AOR = 2.93, 95% CI: 1.12–7.66), educational status (AOR = 3.51, 95% CI: 1.13–10.91), and knowledge on transmission of HIV/AIDS (AOR = 7.56, 95% CI: 1.14–40.35) which were significantly associated with the acceptance of PITC among TB patients. Therefore, this study’s results showed, the prevalence of HIV among TB patient was high; to enhance the acceptance of PITC among TB patients, health extension workers must provide health education during home-to-home visiting. TB treatment supervisors also provide counseling intensively for all forms of TB patients during their first clinical encounter. Wakjira Kebede, Fikru Keno, Temesgen Ewunetu, and Gutu Mamo Copyright © 2014 Wakjira Kebede et al. All rights reserved. Tuberculin Skin Tests versus Interferon-Gamma Release Assays in Tuberculosis Screening among Immigrant Visa Applicants Thu, 06 Mar 2014 15:58:33 +0000 http://www.hindawi.com/journals/trt/2014/217969/ Objective. Use of tuberculin skin tests (TSTs) and interferon gamma release assays (IGRAs) as part of tuberculosis (TB) screening among immigrants from high TB-burden countries has not been fully evaluated. Methods. Prevalence of Mycobacterium tuberculosis infection (MTBI) based on TST, or the QuantiFERON-TB Gold test (QFT-G), was determined among immigrant applicants in Vietnam bound for the United States (US); factors associated with test results and discordance were assessed; predictive values of TST and QFT-G for identifying chest radiographs (CXRs) consistent with TB were calculated. Results. Of 1,246 immigrant visa applicants studied, 57.9% were TST positive, 28.3% were QFT-G positive, and test agreement was 59.4%. Increasing age was associated with positive TST results, positive QFT-G results, TST-positive but QFT-G-negative discordance, and abnormal CXRs consistent with TB. Positive predictive values of TST and QFT-G for an abnormal CXR were 25.9% and 25.6%, respectively. Conclusion. The estimated prevalence of MTBI among US-bound visa applicants in Vietnam based on TST was twice that based on QFT-G, and 14 times higher than a TST-based estimate of MTBI prevalence reported for the general US population in 2000. QFT-G was not better than TST at predicting abnormal CXRs consistent with TB. Stella O. Chuke, Nguyen Thi Ngoc Yen, Kayla F. Laserson, Nguyen Huu Phuoc, Nguyen An Trinh, Duong Thi Cam Nhung, Vo Thi Chi Mai, An Dang Qui, Hoang Hoa Hai, Le Thien Huong Loan, Warren G. Jones, William C. Whitworth, J. Jina Shah, John A. Painter, Gerald H. Mazurek, and Susan A. Maloney Copyright © 2014 Stella O. Chuke et al. All rights reserved.