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First-episode schizophrenia

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https://www.readbyqxmd.com/read/28097367/impaired-glucose-homeostasis-in-first-episode-schizophrenia-a-systematic-review-and-meta-analysis
#1
Toby Pillinger, Katherine Beck, Cristian Gobjila, Jacek G Donocik, Sameer Jauhar, Oliver D Howes
Importance: Schizophrenia is associated with an increased risk of type 2 diabetes. However, it is not clear whether schizophrenia confers an inherent risk for glucose dysregulation in the absence of the effects of chronic illness and long-term treatment. Objective: To conduct a meta-analysis examining whether individuals with first-episode schizophrenia already exhibit alterations in glucose homeostasis compared with controls. Data Sources: The EMBASE, MEDLINE, and PsycINFO databases were systematically searched for studies examining measures of glucose homeostasis in antipsychotic-naive individuals with first-episode schizophrenia compared with individuals serving as controls...
January 11, 2017: JAMA Psychiatry
https://www.readbyqxmd.com/read/28096881/design-and-methodology-of-the-korean-early-psychosis-cohort-study
#2
Sung-Wan Kim, Bong Ju Lee, Jung Jin Kim, Je-Chun Yu, Kyu Young Lee, Seung-Hee Won, Seung-Hwan Lee, Seung-Hyun Kim, Shi Hyun Kang, Young-Chul Chung
The present study details the rationale and methodology of the Korean Early Psychosis Cohort Study (KEPS), which is a clinical cohort investigation of first episode psychosis patients from a Korean population. The KEPS is a prospective naturalistic observational cohort study that follows the participants for at least 2 years. This study includes patients between 18 and 45 years of age who fulfill the criteria for one of schizophrenia spectrum and other psychotic disorders according to the diagnostic criteria of DSM-5...
January 2017: Psychiatry Investigation
https://www.readbyqxmd.com/read/28095817/changes-in-event-related-potentials-in-patients-with-first-episode-schizophrenia-and-their-siblings
#3
Chengqing Yang, Tianhong Zhang, Zezhi Li, Anisha Heeramun-Aubeeluck, Na Liu, Nan Huang, Jie Zhang, Leiying He, Hui Li, Yingying Tang, Fazhan Chen, Jijun Wang, Zheng Lu
BACKGROUND: This study aimed to explore the characteristics of event-related potentials induced by facial emotion recognition in patients with first-episode schizophrenia and in their siblings. METHODS: In this case-control study, 30 first-episode schizophrenia patients, 26 siblings, and 30 healthy controls were enrolled. They completed facial emotion recognition tasks from the Ekman Standard Faces Database as an induction for evoked potentials. Evoked potential data were obtained using a 64-channel electroencephalography system...
January 17, 2017: BMC Psychiatry
https://www.readbyqxmd.com/read/28092779/aberrant-spontaneous-neural-activity-and-correlation-with-evoked-brain-potentials-in-first-episode-treatment-na%C3%A3-ve-patients-with-deficit-and-non-deficit-schizophrenia
#4
Zhe Li, Wei Lei, Wei Deng, Zhong Zheng, Mingli Li, Xiaohong Ma, Qiang Wang, Chaohua Huang, Na Li, David A Collier, Qiyong Gong, Tao Li
The goals of the study were to analyze spontaneous neural activity between deficit and non-deficit schizophrenia (DS, NDS) using resting-state fMRI, and to investigate the correlation of fMRI with clinical features and evoked brain potentials. The amplitude of low frequency fluctuation (ALFF) was measured in 41 DS participants, 42 NDS participants, and 42 healthy controls. ALFF in the bilateral cerebellum posterior lobe was significantly decreased in patients, while ALFF in the right fusiform gyrus and the bilateral putamen was significantly increased...
January 5, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28076667/effectiveness-of-antipsychotic-drugs-for-24-month-maintenance-treatment-in-first-episode-schizophrenia-evidence-from-a-community-based-real-world-study
#5
Chen Zhang, Mei-Juan Chen, Guo-Jun Wu, Zuo-Wei Wang, Shun-Zeng Rao, Yi Zhang, Zheng-Hui Yi, Wei-Min Yang, Ke-Ming Gao, Li-Sheng Song
OBJECTIVE: Maintenance treatment of schizophrenia with antipsychotic medications has become a standard for the prevention of psychotic relapse. However, little is known about the effectiveness of antipsychotic drugs for maintenance treatment in "real-world" populations with schizophrenia. We carried out a prospective study to assess the effectiveness of the most frequently prescribed antipsychotic drugs in the maintenance treatment of schizophrenia from 2 community settings. METHODS: This study was conducted from October 2011 to December 2014...
November 2016: Journal of Clinical Psychiatry
https://www.readbyqxmd.com/read/28076647/sex-specific-cognitive-abnormalities-in-early-onset-psychosis
#6
Miguel Ruiz-Veguilla, Josefa Moreno-Granados, Maria D Salcedo-Marin, Maria L Barrigon, Maria J Blanco-Morales, Evelio Igunza, Anselmo Cañabate, Maria D Garcia, Teresa Guijarro, Francisco Diaz-Atienza, Maite Ferrin
Objectives: Brain maturation differs depending on the area of the brain and sex. Girls show an earlier peak in maturation of the prefrontal cortex. Although differences between adult females and males with schizophrenia have been widely studied, there has been less research in girls and boys with psychosis. The purpose of this study was to examine differences in verbal and visual memory, verbal working memory, auditory attention, processing speed, and cognitive flexibility between boys and girls...
January 9, 2017: Revista Brasileira de Psiquiatria
https://www.readbyqxmd.com/read/28068398/correction-voxel-based-morphometry-in-individuals-at-genetic-high-risk-for-schizophrenia-and-patients-with-schizophrenia-during-their-first-episode-of-psychosis
#7
Miao Chang, Fay Y Womer, Chuan Bai, Qian Zhou, Shengnan Wei, Xiaowei Jiang, Haiyang Geng, Yifang Zhou, Yanqing Tang, Fei Wang
[This corrects the article DOI: 10.1371/journal.pone.0163749.].
2017: PloS One
https://www.readbyqxmd.com/read/28062471/pharmacological-guidelines-for-schizophrenia-a-systematic-review-and-comparison-of-recommendations-for-the-first-episode
#8
Dolores Keating, Stephen McWilliams, Ian Schneider, Caroline Hynes, Gráinne Cousins, Judith Strawbridge, Mary Clarke
OBJECTIVES: Clinical practice guidelines (CPGs) support the translation of research evidence into clinical practice. Key health questions in CPGs ensure that recommendations will be applicable to the clinical context in which the guideline is used. The objectives of this study were to identify CPGs for the pharmacological treatment of first-episode schizophrenia; assess the quality of these guidelines using the Appraisal of Guidelines for Research and Evaluation II (AGREE II) instrument; and compare recommendations in relation to the key health questions that are relevant to the pharmacological treatment of first-episode schizophrenia...
January 6, 2017: BMJ Open
https://www.readbyqxmd.com/read/28050187/detection-of-borna-disease-virus-bdv-in-patients-with-first-episode-of-schizophrenia
#9
Hasan Soltani, Serwa Mohammadzadeh, Manoochehr Makvandi, Siroos Pakseresht, Alireza Samarbaf-Zadeh
Objective: Schizophrenia is a complex widespread neuropsychiatric disorder. This illness encompasses a complex debilitating mental disorder causing illusion, delusion, disturbed relationship, low motivation and decline of emotion. Viral infection of the brain including Borna Disease Virus (BDV) may play a role in transient or permanent neurological and behavioral abnormalities. This role of Borna virus has not been resolved outright yet, and based on published papers investigation examining the role of this virus in schizophrenia is in progress worldwide...
October 2016: Iranian Journal of Psychiatry
https://www.readbyqxmd.com/read/28049080/metabolic-syndrome-or-glucose-challenge-in-first-episode-of-psychosis
#10
C Garcia-Rizo, E Fernandez-Egea, C Oliveira, A Meseguer, B Cabrera, G Mezquida, M Bioque, R Penades, E Parellada, M Bernardo, B Kirkpatrick
Patients with schizophrenia exhibit a reduced life expectancy. Although unhealthy lifestyle or suicide risk plays a role, the main causes are diverse medical conditions such as cardiovascular diseases, type 2 diabetes mellitus and metabolic syndrome. Albeit pharmacological secondary side effects might also trigger previous conditions, studies in naïve patients reflect diverse anomalies at the onset. Patients with a first episode of psychosis, display a wide scope of metabolic abnormalities, ranging from normality till pathological values depending on the parameters studied...
December 30, 2016: European Psychiatry: the Journal of the Association of European Psychiatrists
https://www.readbyqxmd.com/read/28047515/su-f-i-67-neurometabolic-effect-induced-by-repeated-exposure-to-dizocilpine-on-prefrontal-cortex-of-schizophrenic-animal-model-using-in-vivo-proton-magnetic-resonance-spectroscopy-at-9-4-t
#11
C-H Yoo, K-H Song, S-I Lim, D-C Woo, B-Y Choe
PURPOSE: Repeated exposure of dizocilpine (MK-801) can provide a pathophysiological model for progressive development of schizophrenia. In vivo proton magnetic resonance spectroscopy ((1) H MRS) was widely used for non-invasive measurement of neurometabolites, and assessment of disease-induced neurometabolic alterations. The purpose of this study was to investigate neurometabolic alteration in prefrontal cortex (PFC) with respect to progression (from first-episode to chronic stage) of schizophrenia by using in vivo (1) H MRS...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28032136/low-incidence-of-psychosis-in-italy-confirmation-from-the-first-epidemiological-study-in-sicily
#12
A Mulè, L Sideli, V Capuccio, P Fearon, L Ferraro, J B Kirkbride, C La Cascia, C Sartorio, F Seminerio, G Tripoli, M Di Forti, D La Barbera, R M Murray
PURPOSE: The incidence of psychotic disorders varies in different geographical areas. As there have been no reports from Southern Italy, this study aimed to determine the incidence rate of first-episode psychosis in Palermo, Sicily. METHODS: All patients, aged 18-65 years, presenting with a first episode of psychosis (FEP) (ICD-10 F20-29, F30-33) to mental health services in Palermo, were recorded over a 3-year period. Incidence rates of psychotic disorders and their 95% confidence intervals (95% CI) were estimated...
December 28, 2016: Social Psychiatry and Psychiatric Epidemiology
https://www.readbyqxmd.com/read/28029428/the-serotonin-transporter-gene-5-httlpr-polymorphism-is-associated-with-affective-psychoses-but-not-with-schizophrenia-a-large-scale-study-in-the-russian-population
#13
Vera Golimbet, Galina Korovaitseva, Tatyana Lezheiko, L I Abramova, V G Kaleda
BACKGROUND: Affective syndrome is thought to be a key feature that differentiates schizophrenia from schizoaffective disorder (SA) and bipolar disorder with psychotic features (BDP). However genetic underpinnings of these differences remain unresolved. OBJECTIVES: We compared clinical variables of affective psychoses (SA, BDP and schizophrenia with affective symptoms (AFF SCZ)) and schizophrenia without affective symptoms (non-AFF SCZ) and searched for a genetic variant that may differentiate affective psychosis from non-AFF SCZ...
October 26, 2016: Journal of Affective Disorders
https://www.readbyqxmd.com/read/28027496/allostatic-load-and-reduced-cortical-thickness-in-schizophrenia
#14
Joshua Chiappelli, Peter Kochunov, Anya Savransky, Feven Fisseha, Krista Wisner, Xiaoming Du, Laura M Rowland, L Elliot Hong
Structural imaging studies have consistently found reduced gray matter thickness of the cerebral cortex in schizophrenia, a finding that is evident in first episode psychosis and may be progressive in some cases. Although genetic predisposition and medication effects may contribute to cortical thinning, we hypothesize that the cumulative effects of stress may represent an environmental factor impacting brain morphology in schizophrenia. We examined the relationship between allostatic load, an index of peripheral biomarkers representing the cumulative effects of stress, and cortical thickness...
November 24, 2016: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28027110/unaltered-dopamine-transporter-availability-in-drug-naive-patients-with-schizophrenia-after-6-months-of-antipsychotics-treatment-a-naturalistic-study
#15
Wei Hung Chang, Kao Chin Chen, I Hui Lee, Mei Hung Chi, Po See Chen, Wei Jen Yao, Nan Tsing Chiu, Yen Kuang Yang
BACKGROUND: Dopaminergic dysfunction, namely, dopamine transporter (DAT) availability variations in patients with drug-naive schizophrenia after long-term treatment, is still not well understood. The aims of the study were to explore (i) whether the DAT availability in patients with drug-naive schizophrenia differed after antipsychotic treatment and (ii) whether treatment with different generations of antipsychotics influenced the DAT availability after follow-up for 6 months. METHODS: Twenty-four first-episode, drug-naive patients with schizophrenia were divided into first- and second-generation antipsychotic groups naturalistically...
February 2017: Journal of Clinical Psychopharmacology
https://www.readbyqxmd.com/read/28005458/discriminating-between-first-and-second-order-cognition-in-first-episode-paranoid-schizophrenia
#16
Vibeke Bliksted, Erla Samuelsen, Kristian Sandberg, Bo Martin Bibby, Morten Storm Overgaard
INTRODUCTION: An impairment of visually perceiving backward masked stimuli is commonly observed in patients with schizophrenia, yet it is unclear whether this impairment is the result of a deficiency in first or higher order processing and for which subtypes of schizophrenia it is present. METHODS: Here, we compare identification (first order) and metacognitive (higher order) performance in a visual masking paradigm between a highly homogenous group of young first-episode patients diagnosed with paranoid schizophrenia (N = 11) to that of carefully matched healthy controls (N = 13)...
December 22, 2016: Cognitive Neuropsychiatry
https://www.readbyqxmd.com/read/28003912/reduced-%C3%AE-aminobutyric-acid-and-glutamate-glutamine-levels-in-drug-na%C3%A3-ve-patients-with-first-episode-schizophrenia-but-not-in-those-at-ultrahigh-risk
#17
Junjie Wang, Yingying Tang, Tianhong Zhang, Huiru Cui, Lihua Xu, Botao Zeng, Yu Li, Gaiying Li, Chunbo Li, Hui Liu, Zheng Lu, Jianye Zhang, Jijun Wang
Altered γ-aminobutyric acid (GABA), glutamate (Glu) levels, and an imbalance between GABAergic and glutamatergic neurotransmissions have been involved in the pathophysiology of schizophrenia. However, it remains unclear how these abnormalities impact the onset and course of psychosis. In the present study, 21 drug-naïve subjects at ultrahigh risk for psychosis (UHR), 16 drug-naïve patients with first-episode schizophrenia (FES), and 23 healthy controls (HC) were enrolled. In vivo GABA and glutamate+glutamine (Glx) levels in the medial prefrontal cortex were measured using proton magnetic resonance spectroscopy...
2016: Neural Plasticity
https://www.readbyqxmd.com/read/27995059/working-memory-circuit-as-a-function-of-increasing-age-in-healthy-adolescence-a-systematic-review-and-meta-analyses
#18
Julia Andre, Marco Picchioni, Ruibin Zhang, Timothea Toulopoulou
Working memory ability matures through puberty and early adulthood. Deficits in working memory are linked to the risk of onset of neurodevelopmental disorders such as schizophrenia, and there is a significant temporal overlap between the peak of first episode psychosis risk and working memory maturation. In order to characterize the normal working memory functional maturation process through this critical phase of cognitive development we conducted a systematic review and coordinate based meta-analyses of all the available primary functional magnetic resonance imaging studies (n = 382) that mapped WM function in healthy adolescents (10-17 years) and young adults (18-30 years)...
2016: NeuroImage: Clinical
https://www.readbyqxmd.com/read/27992809/much-ado-about-everything-a-literature-review-of-insight-in-first-episode-psychosis-and-schizophrenia
#19
J Elowe, P Conus
No abstract text is available yet for this article.
December 16, 2016: European Psychiatry: the Journal of the Association of European Psychiatrists
https://www.readbyqxmd.com/read/27992301/fine-mapping-of-antipsychotic-response-genome-wide-association-studies-reveals-novel-regulatory-mechanisms
#20
Ellen S Ovenden, Britt I Drögemöller, Lize van der Merwe, Bonginkosi Chiliza, Laila Asmal, Robin A Emsley, Louise Warnich
AIM: Noncoding variation has demonstrated regulatory effects on disease treatment outcomes. This study investigated the potential functionality of previously implicated noncoding variants on schizophrenia treatment response. MATERIALS & METHODS: Predicted regulatory potential of variation identified from antipsychotic response genome-wide association studies was determined. Prioritized variants were assessed for association(s) with treatment outcomes in a South African first episode schizophrenia cohort (n = 103)...
January 2017: Pharmacogenomics
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