Schizophrenia Research and Treatment https://www.hindawi.com The latest articles from Hindawi © 2017 , Hindawi Limited . All rights reserved. Abnormal N400 Semantic Priming Effect May Reflect Psychopathological Processes in Schizophrenia: A Twin Study Mon, 28 Aug 2017 00:00:00 +0000 http://www.hindawi.com/journals/schizort/2017/7163198/ Objective. Activation of semantic networks is indexed by the N400 effect. We used a twin study design to investigate whether N400 effect abnormalities reflect genetic/trait liability or are related to psychopathological processes in schizophrenia. Methods. We employed robust linear regression to compare N400 and behavioral priming effects across 36 monozygotic twin pairs (6 pairs concordant for schizophrenia/schizoaffective disorder, 11 discordant pairs, and 19 healthy control pairs) performing a lexical decision task. Moreover, we examined the correlation between Brief Psychiatric Rating Scale (BPRS) score and the N400 effect and the influence of medication status on this effect. Results. Regression yielded a significant main effect of group on the N400 effect only in the direct priming condition (). Indirect condition and behavioral priming effect showed no significant effect of group. Planned contrasts with the control group as a reference group revealed that affected concordant twins had significantly reduced N400 effect compared to controls, and discordant affected twins had a statistical trend for reduced N400 effect compared to controls. The unaffected twins did not differ significantly from the controls. There was a trend for correlation between reduced N400 effect and higher BPRS scores, and the N400 effect did not differ significantly between medicated and unmedicated patients. Conclusions. Reduced N400 effect may reflect disease-specific processes in schizophrenia implicating frontotemporal brain network in schizophrenia pathology. Anuradha Sharma, Heinrich Sauer, Holger Hill, Claudia Kaufmann, Stephan Bender, and Matthias Weisbrod Copyright © 2017 Anuradha Sharma et al. All rights reserved. Impact of Pharmacist Counselling on Clozapine Knowledge Tue, 13 Jun 2017 06:18:50 +0000 http://www.hindawi.com/journals/schizort/2017/6120970/ Clozapine is the only antipsychotic with evidence for efficacy in treatment of resistant schizophrenia but it carries a high side effect burden. Patient information is provided but may be poorly retained. This study aims to examine the impact of pharmacist counselling upon patient knowledge of clozapine. Outpatients, aged 18 years and over, attending St. Patrick’s University Hospital, Dublin, participated in this study between June and August 2015. The intervention consisted of pharmacist counselling on two occasions one month apart. Knowledge was assessed using a 28-point checklist devised from the currently available clozapine patient information sources, at baseline and after each counselling session. Ethics approval was obtained. Twenty-five participants (40% female; mean age 45.1 years, SD 9.82; 64% unemployed, 28% smokers) showed an improvement in knowledge scores of clozapine from baseline to postcounselling on each occasion with an overall improvement in knowledge score, from baseline to postcounselling at one month, of 39.43%; . This study adds to the evidence that interventions involving pharmacist counselling can improve patient knowledge, whilst the specific knowledge gained relating to recognition of side effects may help patients towards more empowerment regarding their treatment. Ciara Ní Dhubhlaing, Ailish Young, and Laura J. Sahm Copyright © 2017 Ciara Ní Dhubhlaing et al. All rights reserved. Cortical Thinning in Network-Associated Regions in Cognitively Normal and Below-Normal Range Schizophrenia Tue, 28 Feb 2017 00:00:00 +0000 http://www.hindawi.com/journals/schizort/2017/9760905/ This study assessed whether cortical thickness across the brain and regionally in terms of the default mode, salience, and central executive networks differentiates schizophrenia patients and healthy controls with normal range or below-normal range cognitive performance. Cognitive normality was defined using the MATRICS Consensus Cognitive Battery (MCCB) composite score () and structural magnetic resonance imaging was used to generate cortical thickness data. Whole brain analysis revealed that cognitively normal range controls () had greater cortical thickness than both cognitively normal () and below-normal range () patients. Cognitively normal controls also demonstrated greater thickness than patients in regions associated with the default mode and salience, but not central executive networks. No differences on any thickness measure were found between cognitively normal range and below-normal range controls () or between cognitively normal and below-normal range patients. In addition, structural covariance between network regions was high and similar across subgroups. Positive and negative symptom severity did not correlate with thickness values. Cortical thinning across the brain and regionally in relation to the default and salience networks may index shared aspects of the psychotic psychopathology that defines schizophrenia with no relation to cognitive impairment. R. Walter Heinrichs, Farena Pinnock, Melissa Parlar, Colin Hawco, Lindsay Hanford, and Geoffrey B. Hall Copyright © 2017 R. Walter Heinrichs et al. All rights reserved. Improving Theory of Mind in Schizophrenia by Targeting Cognition and Metacognition with Computerized Cognitive Remediation: A Multiple Case Study Thu, 26 Jan 2017 08:07:11 +0000 http://www.hindawi.com/journals/schizort/2017/7203871/ Schizophrenia is associated with deficits in theory of mind (ToM) (i.e., the ability to infer the mental states of others) and cognition. Associations have often been reported between cognition and ToM, and ToM mediates the relationship between impaired cognition and impaired functioning in schizophrenia. Given that cognitive deficits could act as a limiting factor for ToM, this study investigated whether a cognitive remediation therapy (CRT) that targets nonsocial cognition and metacognition could improve ToM in schizophrenia. Four men with schizophrenia received CRT. Assessments of ToM, cognition, and metacognition were conducted at baseline and posttreatment as well as three months and 1 year later. Two patients reached a significant improvement in ToM immediately after treatment whereas at three months after treatment all four cases reached a significant improvement, which was maintained through 1 year after treatment for all three cases that remained in the study. Improvements in ToM were accompanied by significant improvements in the most severely impaired cognitive functions at baseline or by improvements in metacognition. This study establishes that a CRT program that does not explicitly target social abilities can improve ToM. Élisabeth Thibaudeau, Caroline Cellard, Clare Reeder, Til Wykes, Hans Ivers, Michel Maziade, Marie-Audrey Lavoie, William Pothier, and Amélie M. Achim Copyright © 2017 Élisabeth Thibaudeau et al. All rights reserved. Neuroactive Steroids in First-Episode Psychosis: A Role for Progesterone? Thu, 22 Sep 2016 12:31:07 +0000 http://www.hindawi.com/journals/schizort/2016/1942828/ Neuroactive steroids may play a role in the pathophysiology of psychotic disorders, but few studies examined this issue. We compared serum levels of cortisol, testosterone, dehydroepiandrosterone, and progesterone between a representative sample of first-episode psychosis (FEP) patients and age- and gender-matched healthy subjects. Furthermore, we analyzed the associations between neuroactive steroids levels and the severity of psychotic symptom dimensions. Male patients had lower levels of progesterone than controls (). Progesterone levels were inversely associated with the severity of positive symptoms (). Consistent with preclinical findings, results suggest that progesterone might have a role in the pathophysiology of psychotic disorders. Martino Belvederi Murri, Flaminia Fanelli, Uberto Pagotto, Elena Bonora, Federico Triolo, Luigi Chiri, Fabio Allegri, Marco Mezzullo, Marco Menchetti, Valeria Mondelli, Carmine Pariante, Domenico Berardi, and Ilaria Tarricone Copyright © 2016 Martino Belvederi Murri et al. All rights reserved. Sex Differences in Severity, Social Functioning, Adherence to Treatment, and Cognition of Adolescents with Schizophrenia Wed, 14 Sep 2016 07:18:51 +0000 http://www.hindawi.com/journals/schizort/2016/1928747/ Background. Previous studies have reported sex differences in the clinical presentation and outcome of adult patients with schizophrenia; the aim of present study was to compare the clinical characteristics, social functioning, adherence to treatment, and cognition of adolescents with this diagnosis in a six-month followup. Methods. A total of 87 adolescents with a DSM-IV diagnosis of schizophrenia or schizophreniform disorder were evaluated with the Positive and Negative Symptoms Scale (PANSS), the Matrics Consensus Cognitive Battery (MCCB), Personal and Social Performance Scale (PSP), and the Rating of Medication Influences (ROMI). Results. Both groups showed a similar improvement in all PANSS factors and in the PSP scores during the followup. Males better adhered to treatment. Females displayed better results in the area of social cognition (, df = 2,52, and ) and attention/vigilance (, df = 2,51, and ). Conclusions. Male and female adolescents showed similar clinical presentation and functioning but a different pattern of cognitive improvement and adherence to treatment. This trial is registered with Clinicaltrials.gov II3/02/0811.‏ Rodolfo Pérez-Garza, Gamaliel Victoria-Figueroa, and Rosa Elena Ulloa-Flores Copyright © 2016 Rodolfo Pérez-Garza et al. All rights reserved. Neurophysiology for Detection of High Risk for Psychosis Sun, 07 Aug 2016 09:03:44 +0000 http://www.hindawi.com/journals/schizort/2016/2697971/ Schizophrenia is a complex and often disabling disorder that is characterized by a wide range of social, emotional, and cognitive deficits. Increasing research suggests that the greatest social and cognitive therapeutic impact comes from early identification. The present study applied a well-established neurophysiological paradigm in the schizophrenia literature, mismatch negativity (MMN), to college students identified as high risk (HR) for psychosis to investigate MMN as a potential biomarker for the onset of psychosis. The hypothesis was that HR would exhibit attenuated MMN amplitudes compared to controls, as has been established in individuals with chronic schizophrenia. Participants () were separated into Group 1 (controls) () and Group 2 (HR) () based on the established cutoff score of the 16-item Prodromal Questionnaire. Participants then completed a time based MMN paradigm during which brain activity was recorded with EEG. For all electrode locations, controls demonstrated significantly more negative amplitudes than HR (: , ; : , ; : , ). Results suggested that MMN may assist in identifying those who appear high-functioning but may be at risk for later development of psychosis or cognitive and psychological difficulties associated with psychosis. Lara N. Pantlin and Deana Davalos Copyright © 2016 Lara N. Pantlin and Deana Davalos. All rights reserved. Does the Beck Cognitive Insight Scale Predict Response to Cognitive Remediation in Schizophrenia? Tue, 19 Jul 2016 13:32:10 +0000 http://www.hindawi.com/journals/schizort/2016/6371856/ Cognitive remediation therapy (CRT) has emerged as a viable treatment option for people diagnosed with schizophrenia presenting disabling cognitive deficits. However, it is important to determine which variables can influence response to CRT in order to provide cost-effective treatment. This study’s aim was to explore cognitive insight as a potential predictor of cognitive improvement after CRT. Twenty patients with schizophrenia completed a 24-session CRT program involving 18 hours of computer exercises and 6 hours of group discussion to encourage generalization of cognitive training to everyday activities. Pre- and posttest assessments included the CogState Research Battery and the Beck Cognitive Insight Scale (BCIS). Lower self-certainty on the BCIS at baseline was associated with greater improvement in speed of processing (; ) and visual memory (; ). The results of this study point out potential associations between self-certainty and cognitive improvement after CRT, a variable that can easily be measured in clinical settings to help evaluate which patients may benefit most from the intervention. They also underline the need to keep investigating the predictors of good CRT outcomes, which can vary widely between patients. Audrey Benoit, Philippe-Olivier Harvey, Louis Bherer, and Martin Lepage Copyright © 2016 Audrey Benoit et al. All rights reserved. Symptoms and Etiological Attribution: A Cross-Sectional Study in Mexican Outpatients with Psychosis and Their Relatives Thu, 16 Jun 2016 09:41:37 +0000 http://www.hindawi.com/journals/schizort/2016/9549683/ This cross-sectional study aimed at identifying the most common attributions of their mental disorder in a Mexican patients who have experienced psychosis and their relatives and exploring how having experienced or not characteristic psychotic symptoms and their present clinical status might affect their etiological attributions. Past and current symptom profiles of 66 patients were as assessed with the SCID-I (Structured Clinical Interview for DSM-IV Axis I Disorders) and the PANSS (Positive and Negative Syndrome Scale), respectively. The etiological attribution of psychosis of patients () and the relatives () was assessed with the Angermeyer and Klusmann scale comprising 30 items into five categories: biology, personality, family, society, and esoteric. Patients and relatives attribute psychosis mainly to social factors. Relatives’ attributions were not influenced by clinical profile of patients, whereas in the case of patients it was only current clinical status that showed a difference, with those in nonremission scoring higher personality and family factors. Acknowledging patients’ and relatives’ beliefs about mental disorders at onset and later on is particularly important in psychosis, a mental condition with severe and/or persistent symptoms, in order to promote better involvement in treatment and in consequence efficacy and recovery. Lizzette Gómez-de-Regil, Agnès Ros-Morente, and Gisela Rodríguez-Hansen Copyright © 2016 Lizzette Gómez-de-Regil et al. All rights reserved. Influence of Antipsychotic and Anticholinergic Loads on Cognitive Functions in Patients with Schizophrenia Sun, 10 Apr 2016 06:52:06 +0000 http://www.hindawi.com/journals/schizort/2016/8213165/ Many patients with schizophrenia show cognitive impairment. There is evidence that, beyond a certain dose of antipsychotic medication, the antipsychotic daily dose (ADD) may impair cognitive performance. Parallel to their D2 receptor antagonism, many antipsychotics show a significant binding affinity to cholinergic muscarinic receptors. Pharmacological treatment with a high anticholinergic daily dose (CDD) significantly impairs attention and memory performance. To examine the relationships between individual cognitive performance and ADD and/or CDD, we conducted a retrospective record-based analysis of a sample of in patients with a diagnosis of schizophrenia, all of whom had completed a comprehensive neuropsychological test battery. To calculate the individual ADD and CDD, the medication at the time of testing was converted according to equivalence models. After extracting five principal cognitive components, we examined the impact of ADD and CDD on cognitive performance in the medicated sample and subgroups using multiple regression analysis. Finally, locally weighted scatterplot smoothing (Loess) was applied to further explore the course of cognitive performance under increasing dosage. Results showed significant negative effects of ADD on performance in tests of information processing speed and verbal memory. No effects were found for CDD. The potential neuropsychopharmacological and clinical implications are discussed. Michael Rehse, Marina Bartolovic, Katlehn Baum, Dagmar Richter, Matthias Weisbrod, and Daniela Roesch-Ely Copyright © 2016 Michael Rehse et al. All rights reserved. Drug Repurposing Is a New Opportunity for Developing Drugs against Neuropsychiatric Disorders Thu, 17 Mar 2016 06:33:31 +0000 http://www.hindawi.com/journals/schizort/2016/6378137/ Better the drugs you know than the drugs you do not know. Drug repurposing is a promising, fast, and cost effective method that can overcome traditional de novo drug discovery and development challenges of targeting neuropsychiatric and other disorders. Drug discovery and development targeting neuropsychiatric disorders are complicated because of the limitations in understanding pathophysiological phenomena. In addition, traditional de novo drug discovery and development are risky, expensive, and time-consuming processes. One alternative approach, drug repurposing, has emerged taking advantage of off-target effects of the existing drugs. In order to identify new opportunities for the existing drugs, it is essential for us to understand the mechanisms of action of drugs, both biologically and pharmacologically. By doing this, drug repurposing would be a more effective method to develop drugs against neuropsychiatric and other disorders. Here, we review the difficulties in drug discovery and development in neuropsychiatric disorders and the extent and perspectives of drug repurposing. Hyeong-Min Lee and Yuna Kim Copyright © 2016 Hyeong-Min Lee and Yuna Kim. All rights reserved. Schizophrenia and Suicide Attempts: Findings from a Representative Community-Based Canadian Sample Wed, 10 Feb 2016 09:05:12 +0000 http://www.hindawi.com/journals/schizort/2016/3165243/ This study examined factors associated with suicide attempts among those with schizophrenia () versus those without () in a representative sample of noninstitutionalized Canadians. The lifetime prevalence of suicide attempts among persons with schizophrenia was 39.2% versus 2.8% of nonafflicted individuals. After adjusting for sociodemographics, childhood adversities, substance abuse/dependence, depression/anxiety, and chronic pain, those with schizophrenia had 6 times the odds (OR = 6.47) of attempting suicide. Among persons with schizophrenia, suicide attempts were associated with female gender (OR = 4.59), substance abuse/dependence (OR = 6.31), depression (OR = 4.93), and childhood physical abuse (OR = 5.75). Community-dwelling persons with schizophrenia appear to be at high risk for suicide attempts. Esme Fuller-Thomson and Bailey Hollister Copyright © 2016 Esme Fuller-Thomson and Bailey Hollister. All rights reserved. Parents’ Experiences of Caring Responsibility for Their Adult Child with Schizophrenia Thu, 04 Feb 2016 12:09:38 +0000 http://www.hindawi.com/journals/schizort/2016/1958198/ As a consequence of the latest psychiatry-related reform in Sweden and its implementation, relatives and family members have taken over from the formal healthcare system significant responsibility for the care of persons with a mental disability and illness. The aim of this study was to systematically describe and analyze the experiences of parents’ informal care responsibility. The questions were, what are the experiences around parents’ informal care activities and responsibilities and how do parents construct and manage their caring responsibility and with what consequences? Semistructured in-depth interviews were conducted (16 hours of recorded material) with eight parents who were all members of the Interest Association for Schizophrenia (Intresseföreningen för Schizofreni (IFS)) in Sweden. A mixed hermeneutic deductive and inductive method was used for the interpretation of the material. The parents endow their informal caring responsibility with meaning of being a good, responsible, and accountable parent with respect to their social context and social relationships as well as with respect to the psychiatric care representatives. In this tense situation, parents compromise between elements of struggle, cooperation, avoidance, and adaption in their interaction with the world outside, meaning the world beyond the care provision for their child, as well as with the world inside themselves. Ann Blomgren Mannerheim, Ulla Hellström Muhli, and Eleni Siouta Copyright © 2016 Ann Blomgren Mannerheim et al. All rights reserved. Delusional Disorder over the Reproductive Life Span: The Potential Influence of Menopause on the Clinical Course Tue, 27 Oct 2015 11:40:59 +0000 http://www.hindawi.com/journals/schizort/2015/979605/ Background and Objectives. Recent evidence supports an association between estrogen levels and severity of psychopathology in schizophrenia women. Our main goal was to investigate whether delusional disorder (DD) women with premenopausal onset and those with postmenopausal onset differ in demographic and clinical features. Methods. Psychopathological symptoms were assessed in 80 DD women (DSM-IV-TR), at baseline and after six and 24 months. Scores in the PANSS, PSP for functionality, HRSD 17 items, C-SSRS for suicide, and the SUMD were considered outcome variables. For comparison purposes, t- and -tests were performed and nonparametric tests when necessary. Analysis of Covariance (ANCOVA) was conducted for multivariate comparisons. Results. 57 out of 80 DD women completed the study. When unadjusted, DD with premenopausal onset had a longer DUP, higher educational level, and a tendency toward higher rates of gynaecological disorders. Erotomanic type was most frequent in DD women premenopausal onset, and somatic and jealous types were most frequent in those with postmenopausal onset. After 24 months, DD women with premenopausal onset showed higher depressive symptoms and a tendency toward higher rates of psychotic relapses. Conclusions. Our results support that some aspects of psychopathology and insight may differ according to the onset of DD and the reproductive status. Alexandre González-Rodríguez, Oriol Molina-Andreu, Rafael Penadés, Marina Garriga, Alexandre Pons, Rosa Catalán, and Miguel Bernardo Copyright © 2015 Alexandre González-Rodríguez et al. All rights reserved. The Impact of Childhood Adversity on the Clinical Features of Schizophrenia Tue, 04 Aug 2015 12:44:11 +0000 http://www.hindawi.com/journals/schizort/2015/532082/ Introduction. Recent research has drawn attention to the link between childhood maltreatment and schizophrenia. Child abuse and neglect may have an impact on symptoms and physical health in these patients. This association has not been studied to date in India. Materials and Methods. Clinically stable patients with schizophrenia () were assessed for childhood adversity using the Childhood Trauma Questionnaire. The association of specific forms of adversity with symptomatology and associated variables was examined. Results. Emotional abuse was reported by 56.5% patients and physical abuse by 33.9%; scores for childhood neglect were also high. Persecutory delusions were linked to physical abuse, while anxiety was linked to emotional neglect and depression to emotional abuse and childhood neglect. Physical abuse was linked to elevated systolic blood pressure, while emotional abuse and neglect in women were linked to being overweight. Conclusions. Childhood adversity is common in schizophrenia and appears to be associated with a specific symptom profile. Certain components of the metabolic syndrome also appear to be related to childhood adversity. These results are subject to certain limitations as they are derived from remitted patients, and no control group was used for measures of childhood adversity. Ravi Philip Rajkumar Copyright © 2015 Ravi Philip Rajkumar. All rights reserved. Arousal Predisposition as a Vulnerability Indicator for Psychosis: A General Population Online Stress Induction Study Tue, 23 Jun 2015 06:06:45 +0000 http://www.hindawi.com/journals/schizort/2015/725136/ Explanatory models ascribe to arousability a central role for the development of psychotic symptoms. Thus, a disposition to hyperarousal (i.e., increased arousal predisposition (AP)) may serve as an underlying vulnerability indicator for psychosis by interacting with stressors to cause symptoms. In this case, AP, stress-response, and psychotic symptoms should be linked before the development of a diagnosable psychotic disorder. We conducted a cross-sectional online study in a population sample (; years, , range 18–70). Participants rated their AP and subclinical psychotic symptoms. Participants reported their stress-levels before and after two stress inductions including an arithmetic and a social stressor. The participants with an increased AP generally felt more stressed. However, AP was not associated with the specific stress-response. As expected, positive psychotic symptoms were significantly associated with AP, but this was not mediated by general stress-levels. Its association to subtle, nonclinical psychotic symptoms supports our assumption that AP could be a vulnerability indicator for psychosis. The trait is easily accessible via a short self-report and could facilitate the identification of people at risk and be a promising target for early stress-management. Further research is needed to clarify its predictive value for stress-responses. Annika Clamor, A. Malika Warmuth, and Tania M. Lincoln Copyright © 2015 Annika Clamor et al. All rights reserved. Twenty Years of Schizophrenia Research in the Northern Finland Birth Cohort 1966: A Systematic Review Mon, 18 May 2015 13:40:52 +0000 http://www.hindawi.com/journals/schizort/2015/524875/ Birth cohort designs are useful in studying adult disease trajectories and outcomes, such as schizophrenia. We review the schizophrenia research performed in the Northern Finland Birth Cohort 1966 (NFBC 1966), which includes 10,934 individuals living in Finland at 16 years of age who have been monitored since each mother’s mid-pregnancy. By the age of 44, 150 (1.4%) had developed schizophrenia. There are 77 original papers on schizophrenia published from the NFBC 1966. The early studies have found various risk factors for schizophrenia, especially related to pregnancy and perinatal phase. Psychiatric and somatic outcomes were heterogeneous, but relatively poor. Mortality in schizophrenia is high, especially due to suicides. Several early predictors of outcomes have also been found. Individuals with schizophrenia have alterations in brain morphometry and neurocognition, and our latest studies have found that the use of high lifetime doses of antipsychotics associated with these changes. The schizophrenia research in the NFBC 1966 has been especially active for 20 years, the prospective study design and long follow-up enabling several clinically and epidemiologically important findings. When compared to other birth cohorts, the research in the NFBC 1966 has offered also unique findings on course and outcome of schizophrenia. Erika Jääskeläinen, Marianne Haapea, Nina Rautio, Pauliina Juola, Matti Penttilä, Tanja Nordström, Ina Rissanen, Anja Husa, Emmi Keskinen, Riikka Marttila, Svetlana Filatova, Tiina-Mari Paaso, Jenni Koivukangas, Kristiina Moilanen, Matti Isohanni, and Jouko Miettunen Copyright © 2015 Erika Jääskeläinen et al. All rights reserved. Gender Identity Disorder and Schizophrenia: Neurodevelopmental Disorders with Common Causal Mechanisms? Thu, 04 Dec 2014 12:04:26 +0000 http://www.hindawi.com/journals/schizort/2014/463757/ Gender identity disorder (GID), recently renamed gender dysphoria (GD), is a rare condition characterized by an incongruity between gender identity and biological sex. Clinical evidence suggests that schizophrenia occurs in patients with GID at rates higher than in the general population and that patients with GID may have schizophrenia-like personality traits. Conversely, patients with schizophrenia may experience alterations in gender identity and gender role perception. Neurobiological research, including brain imaging and studies of finger length ratio and handedness, suggests that both these disorders are associated with altered cerebral sexual dimorphism and changes in cerebral lateralization. Various mechanisms, such as Toxoplasma infection, reduced levels of brain-derived neurotrophic factor (BDNF), early childhood adversity, and links with autism spectrum disorders, may account for some of this overlap. The implications of this association for further research are discussed. Ravi Philip Rajkumar Copyright © 2014 Ravi Philip Rajkumar. All rights reserved. Eating Disorders in Schizophrenia: Implications for Research and Management Tue, 18 Nov 2014 06:41:39 +0000 http://www.hindawi.com/journals/schizort/2014/791573/ Objective. Despite evidence from case series, the comorbidity of eating disorders (EDs) with schizophrenia is poorly understood. This review aimed to assess the epidemiological and clinical characteristics of EDs in schizophrenia patients and to examine whether the management of EDs can be improved. Methods. A qualitative review of the published literature was performed using the following terms: “schizophrenia” in association with “eating disorders,” “anorexia nervosa,” “bulimia nervosa,” “binge eating disorder,” or “night eating syndrome.” Results. According to our literature review, there is a high prevalence of comorbidity between schizophrenia and EDs. EDs may occur together with or independent of psychotic symptoms in these patients. Binge eating disorders and night eating syndromes are frequently found in patients with schizophrenia, with a prevalence of approximately 10%. Anorexia nervosa seems to affect between 1 and 4% of schizophrenia patients. Psychopathological and neurobiological mechanisms, including effects of antipsychotic drugs, should be more extensively explored. Conclusions. The comorbidity of EDs in schizophrenia remains relatively unexplored. The clearest message of this review is the importance of screening for and assessment of comorbid EDs in schizophrenia patients. The management of EDs in schizophrenia requires a multidisciplinary approach to attain maximized health outcomes. For clinical practice, we propose some recommendations regarding patient-centered care. Youssef Kouidrat, Ali Amad, Jean-Daniel Lalau, and Gwenole Loas Copyright © 2014 Youssef Kouidrat et al. All rights reserved. A Comparative Study between Olanzapine and Risperidone in the Management of Schizophrenia Tue, 26 Aug 2014 11:05:18 +0000 http://www.hindawi.com/journals/schizort/2014/307202/ Introduction. Since a variety of comparisons between risperidone and olanzapine have resulted in diverse outcomes, so safety and efficacy of them were compared again in a new trial. Method. Sixty female schizophrenic patients entered into one of the assigned groups for random allocation to olanzapine or risperidone ( in each group) in a double-blind, 12-week clinical trial. Scale for Assessment of Positive Symptoms (SAPS) and Scale for Assessment of Negative Symptoms (SANS) were used as the primary outcome measures. Clinical Global Impressions-Severity Scale (CGI-S), Schedule for Assessment of Insight (SAI), and finally Simpson Angus Scale (SAS) as well were employed as secondary scales. Results. While both of olanzapine and risperidone were significantly effective for improvement of positive symptoms (), as regards negative symptoms, it was so only by means of olanzapine (). CGI-S and SAI, as well, were significantly improved in both of the groups. SAS increment was significant only in the risperidone group (). Conclusion. While both of olanzapine and risperidone were equally effective for improvement of positive symptoms and insight, olanzapine showed superior efficacy with respect to negative symptoms, along with lesser extrapyramidal side effects, in comparison with risperidone. Saeed Shoja Shafti and Mahsa Gilanipoor Copyright © 2014 Saeed Shoja Shafti and Mahsa Gilanipoor. All rights reserved. Traditional Knowledge and Formulations of Medicinal Plants Used by the Traditional Medical Practitioners of Bangladesh to Treat Schizophrenia Like Psychosis Mon, 30 Jun 2014 11:14:31 +0000 http://www.hindawi.com/journals/schizort/2014/679810/ Schizophrenia is a subtle disorder of brain development and plasticity; it affects the most basic human processes of perception, emotion, and judgment. In Bangladesh the traditional medical practitioners of rural and remote areas characterized the schizophrenia as an insanity or a mental problem due to possession by ghosts or evil spirits and they have used various plant species’ to treat such symptoms. The aim of the present study was to conduct an ethnomedicinal plant survey and documentation of the formulations of different plant parts used by the traditional medical practitioners of Rangamati district of Bangladesh for the treatment of schizophrenia like psychosis. It was observed that the traditional medical practitioners used a total of 15 plant species to make 14 formulations. The plants were divided into 13 families, used for treatment of schizophrenia and accompanying symptoms like hallucination, depression, oversleeping or insomnia, deterioration of personal hygiene, forgetfulness, and fear due to evil spirits like genies or ghost. A search of the relevant scientific literatures showed that a number of plants used by the medicinal practitioners have been scientifically validated in their uses and traditional medicinal knowledge has been a means towards the discovery of many modern medicines. Moreover, the antipsychotic drug reserpine, isolated from the dried root of Rauvolfia serpentina species, revolutionized the treatment of schizophrenia. So it is very much possible that formulations of the practitioner, when examined scientifically in their entireties, can form discovery of lead compounds which can be used as safe and effective antipsychotic drug to treat schizophrenia. Md. Nasir Ahmed and Md. Nur Kabidul Azam Copyright © 2014 Md. Nasir Ahmed and Md. Nur Kabidul Azam. All rights reserved. Polyphenols from Berries of Aronia melanocarpa Reduce the Plasma Lipid Peroxidation Induced by Ziprasidone Wed, 25 Jun 2014 06:48:42 +0000 http://www.hindawi.com/journals/schizort/2014/602390/ Background. Oxidative stress in schizophrenia may be caused partially by the treatment of patients with antipsychotics. The aim of the study was to establish the effects of polyphenol compounds derived from berries of Aronia melanocarpa (Aronox) on the plasma lipid peroxidation induced by ziprasidone in vitro. Methods. Lipid peroxidation was measured by the level of thiobarbituric acid reactive species (TBARS). The samples of plasma from healthy subjects were incubated with ziprasidone (40 ng/ml; 139 ng/ml; and 250 ng/ml) alone and with Aronox (5 ug/ml; 50 ug/ml). Results. We observed a statistically significant increase of TBARS level after incubation of plasma with ziprasidone (40 ng/ml; 139 ng/ml; and 250 ng/ml) (after 24 h incubation: × 10−4, × 10−3, and × 10−3, resp.) and Aronox lipid peroxidation caused by ziprasidone was significantly reduced. After 24-hour incubation of plasma with ziprasidone (40 ng/ml; 139 ng/ml; and 250 ng/ml) in the presence of 50 ug/ml Aronox, the level of TBARS was significantly decreased: × 10−8, × 10−6, and × 10−5, respectively. Conclusion. Aronox causes a distinct reduction of lipid peroxidation induced by ziprasidone. Anna Dietrich-Muszalska, Justyna Kopka, and Bogdan Kontek Copyright © 2014 Anna Dietrich-Muszalska et al. All rights reserved. Residual Negative Symptoms Differentiate Cognitive Performance in Clinically Stable Patients with Schizophrenia and Bipolar Disorder Thu, 12 Jun 2014 09:17:16 +0000 http://www.hindawi.com/journals/schizort/2014/785310/ Cognitive deficits in various domains have been shown in patients with bipolar disorder and schizophrenia. The purpose of the present study was to examine if residual psychopathology explained the difference in cognitive function between clinically stable patients with schizophrenia and bipolar disorder. We compared the performance on tests of attention, visual and verbal memory, and executive function of 25 patients with schizophrenia in remission and 25 euthymic bipolar disorder patients with that of 25 healthy controls. Mediation analysis was used to see if residual psychopathology could explain the difference in cognitive function between the patient groups. Both patient groups performed significantly worse than healthy controls on most cognitive tests. Patients with bipolar disorder displayed cognitive deficits that were milder but qualitatively similar to those of patients with schizophrenia. Residual negative symptoms mediated the difference in performance on cognitive tests between the two groups. Neither residual general psychotic symptoms nor greater antipsychotic doses explained this relationship. The shared variance explained by the residual negative and cognitive deficits that the difference between patient groups may be explained by greater frontal cortical neurophysiological deficits in patients with schizophrenia, compared to bipolar disorder. Further longitudinal work may provide insight into pathophysiological mechanisms that underlie these deficits. Rajeev Krishnadas, Seethalakshmi Ramanathan, Eugene Wong, Ajita Nayak, and Brian Moore Copyright © 2014 Rajeev Krishnadas et al. All rights reserved. Irony and Proverb Comprehension in Schizophrenia: Do Female Patients “Dislike” Ironic Remarks? Tue, 03 Jun 2014 00:00:00 +0000 http://www.hindawi.com/journals/schizort/2014/841086/ Difficulties in understanding irony and sarcasm are part of the social cognition deficits in patients with schizophrenia. A number of studies have reported higher error rates during comprehension in patients with schizophrenia. However, the relationships of these impairments to schizotypal personality traits and other language deficits, such as the comprehension of proverbs, are unclear. We investigated irony and proverb comprehension in an all-female sample of 20 schizophrenia patients and 27 matched controls. Subjects indicated if a statement was intended to be ironic, literal, or meaningless and furthermore rated the meanness and funniness of the stimuli and certainty of their decision. Patients made significantly more errors than controls did. Globally, there were no overall differences in the ratings. However, patients rated the subgroup of stimuli with answers given incorrectly as having significantly less meanness and in case of an error indicated a significantly higher certainty than controls. Across all of the study participants, performances in irony () and proverb () comprehension were significantly correlated with schizotypal personality traits, suggesting a continuum of nonliteral language understanding. Because irony is so frequent in everyday conversations, this makes irony an especially promising candidate for social cognition training in schizophrenia. Alexander M. Rapp, Karin Langohr, Dorothee E. Mutschler, and Barbara Wild Copyright © 2014 Alexander M. Rapp et al. All rights reserved. Effect of a System-Oriented Intervention on Compliance Problems in Schizophrenia: A Pragmatic Controlled Trial Mon, 02 Jun 2014 09:10:12 +0000 http://www.hindawi.com/journals/schizort/2014/789403/ Background. Numerous studies have been conducted with a view to developing strategies for improvement of medical compliance in patients with schizophrenia. All of the studies conducted so far have had an individual approach to compliance based on the assumption that noncompliance is determined individually due to inappropriate behavior in the patient. We conducted a pragmatic controlled trial with a system-oriented approach, to provide a new perspective on compliance and test the efficacy of a multifactorial intervention at the system level in a routine clinical setting, an approach that has not previously been used for the improvement of compliance. Methods. 30 patients were allocated to the system-oriented therapy and 40 patients were allocated to the reference intervention, which consisted of individually based compliance therapy. The follow-up period was six months. Primary endpoint was improvement in compliance, measured by improvement in a compliance scale specifically developed for the project. Results. When accounting for missing values with a multiple imputation approach, we found a tendency toward a difference in both the compliance scale and PANSS favoring the system-oriented therapy, although it did not reach statistical significance. A significant difference in incidence of adverse events and time to first readmission was found. Attrition rates were significantly higher in the reference group and nonsignificant among individuals with lower compliance, which may have diluted effect estimates. This was reflected by significant differences found in an analysis based on a last observation carried forward approach. Conclusion. This study suggests that compliance problems are better solved by a multifactorial intervention at the system level than at the individual level. Hanne Skarsholm, Henrik Stoevring, and Bent Nielsen Copyright © 2014 Hanne Skarsholm et al. All rights reserved. Long-Term Risperidone Treatment Induces Visceral Adiposity Associated with Hepatic Steatosis in Mice: A Magnetic Resonance Approach Sun, 27 Apr 2014 12:58:02 +0000 http://www.hindawi.com/journals/schizort/2014/429291/ Although atypical antipsychotic drugs (APDs) have led to significant advances in the treatment of psychotic disorders, they still induce metabolic disturbances. We aimed at characterizing the metabolic consequences of a risperidone treatment and at establishing a link with noninvasive MR markers, in order to develop a tool for predicting symptoms of the metabolic syndrome. Fat deposition and liver morphometry were assessed by T1-weighted imaging. Fatty acid composition and fat accumulations in tissues were determined using MR spectroscopy with and without water suppression, respectively. Risperidone treatment induced a weight gain accompanied with metabolic disturbances such as hyperglycemic status, an increase in visceral adipose tissue (VAT), and liver fat depositions. Correlations using Methylene-Water Ratio (MWR) and Polyunsaturated Index (PUI) demonstrated a concomitant increase in the weight gain, VAT and liver fat depositions, and a decrease in the quantity of polyunsaturated fatty acids. These results were consistent with a hepatic steatosis state. We evaluated the ability of MR techniques to detect subtle metabolic disorders induced by APDs. Thus, our model and methodology offer the possibility to investigate APDs side effects in order to improve the health conditions of schizophrenic patients. Florent Auger, Patrick Duriez, Françoise Martin-Nizard, Nicolas Durieux, Régis Bordet, and Olivier Pétrault Copyright © 2014 Florent Auger et al. All rights reserved. Investigation of Anti-Toxocara and Anti-Toxoplasma Antibodies in Patients with Schizophrenia Disorder Wed, 16 Apr 2014 11:52:03 +0000 http://www.hindawi.com/journals/schizort/2014/230349/ Objective. The aim of the present study was to examine the relationship between Toxoplasma gondii and Toxocara spp. infections in patients with schizophrenia disorder. Method. A total of 100 patients with schizophrenia disorder and 95 healthy individuals participated in the study. Participants were tested for the presence of anti-T. gondii and anti-Toxocara spp. antibodies by ELISA and Western blotting. Data were analyzed using Chi-square test and Fisher9s exact test. Results. There were no differences in T. gondii IgG seroprevalence between patients with schizophrenia and healthy individuals (), but there were differences in seroprevalence between males and females with schizophrenia (). In contrast, Toxocara spp. IgG seroprevalence was greater in patients with schizophrenia disorder than in healthy individuals (), but there were no differences in seroprevalence between men and women with schizophrenia (). Finally, there were no differences in seroprevalence of T. gondii or Toxocara spp. IgG among different subtypes of schizophrenia, various age groups, residential area, or clinical course of treatment (). Conclusion. The present study suggests that patients with schizophrenia disorder are at elevated risk of Toxocara spp. infection. Moreover, contamination with T. gondii is a risk factor for schizophrenia in women. Shahram Khademvatan, Niloufar Khajeddin, Sakineh Izadi, and Elham Yousefi Copyright © 2014 Shahram Khademvatan et al. All rights reserved. “Sometimes It’s Difficult to Have a Normal Life”: Results from a Qualitative Study Exploring Caregiver Burden in Schizophrenia Thu, 03 Apr 2014 11:36:03 +0000 http://www.hindawi.com/journals/schizort/2014/368215/ Objectives. As a disease typified by early onset and chronic disease course, caring for a person with schizophrenia may have a significant impact on caregivers’ lives. This study aimed to investigate the subjective experiences of caregivers of people with schizophrenia as a means of understanding “caregiver burden” in this population. Methods. Face-to-face qualitative interviews were conducted with a diverse sample of 19 US-English speaking caregivers of people with schizophrenia (who were at least moderately ill). Interview transcripts were analyzed using grounded theory methods and findings used to inform the development of a preliminary conceptual model outlining caregivers’ experiences. Results. Findings support assertions that people with schizophrenia were largely dependent upon caregivers for the provision of care and caregivers subsequently reported lacking time for themselves and their other responsibilities (e.g., family and work). Caregiver burden frequently manifested as detriments in physical (e.g., fatigue, sickness) and emotional well-being (e.g., depression and anxiety). Conclusions. Caring for a person with schizophrenia has a significant impact on the lives of informal (unpaid) caregivers and alleviating caregiver burden is critical for managing individual and societal costs. Future research should concentrate on establishing reliable and valid means of assessing burden among caregivers of persons with schizophrenia to inform the development and evaluation of interventions for reducing this burden. Adam Gater, Diana Rofail, Chloe Tolley, Chris Marshall, Linda Abetz-Webb, Steven H. Zarit, and Carmen Galani Berardo Copyright © 2014 Adam Gater et al. All rights reserved. Prolactin and Psychopathology in Schizophrenia: A Literature Review and Reappraisal Thu, 27 Mar 2014 11:36:42 +0000 http://www.hindawi.com/journals/schizort/2014/175360/ Secretion of the anterior pituitary hormone prolactin can be significantly increased by antipsychotic drugs, leading to a range of adverse effects in patients with schizophrenia. However, there is evidence from a variety of studies that prolactin may also be related to symptom profile and treatment response in these patients, and recent work has identified variations in prolactin secretion even in drug-free patients. In this paper, a selective review of all relevant studies pertaining to prolactin and schizophrenia, including challenge and provocation studies, is presented. The implications of this work are discussed critically. A tentative model, which synthesizes these findings and argues for a significant role for prolactin in the development of schizophrenia, is outlined. Ravi Philip Rajkumar Copyright © 2014 Ravi Philip Rajkumar. All rights reserved. Pomaglumetad Methionil (LY2140023 Monohydrate) and Aripiprazole in Patients with Schizophrenia: A Phase 3, Multicenter, Double-Blind Comparison Wed, 19 Mar 2014 07:45:37 +0000 http://www.hindawi.com/journals/schizort/2014/758212/ We tested the hypothesis that long-term treatment with pomaglumetad methionil would demonstrate significantly less weight gain than aripiprazole in patients with schizophrenia. In this 24-week, multicenter, randomized, double-blind, Phase 3 study, 678 schizophrenia patients were randomized to either pomaglumetad methionil () or aripiprazole (). Treatment groups were also compared on efficacy and various safety measures, including serious adverse events (SAEs), discontinuation due to adverse events (AEs), treatment-emergent adverse events (TEAEs), extrapyramidal symptoms (EPS), and suicide-related thoughts and behaviors. The pomaglumetad methionil group showed significantly greater weight loss at Week 24 (Visit 12) compared with the aripiprazole group (−2.8 ± 0.4 versus 0.4 ± 0.6; ). However, change in Positive and Negative Syndrome Scale (PANSS) total scores for aripiprazole was significantly greater than for pomaglumetad methionil (−15.58 ± 1.58 versus −12.03 ± 0.99; ). The incidences of SAEs (8.2% versus 3.1%; ) and discontinuation due to AEs (16.2% versus 8.7%; ) were significantly higher for pomaglumetad methionil compared with aripiprazole. No statistically significant differences in the incidence of TEAEs, EPS, or suicidal ideation or behavior were noted between treatment groups. In conclusion, long-term treatment with pomaglumetad methionil resulted in significantly less weight gain than aripiprazole. This trial is registered with ClinicalTrials.gov NCT01328093. David H. Adams, Lu Zhang, Brian A. Millen, Bruce J. Kinon, and Juan-Carlos Gomez Copyright © 2014 David H. Adams et al. All rights reserved.