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https://www.readbyqxmd.com/read/29112198/co-aggregation-of-major-psychiatric-disorders-in-individuals-with-first-degree-relatives-with-schizophrenia-a-nationwide-population-based-study
#1
C-M Cheng, W-H Chang, M-H Chen, C-F Tsai, T-P Su, C-T Li, S-J Tsai, J-W Hsu, K-L Huang, W-C Lin, T-J Chen, Y-M Bai
A previous genetic study has suggested that schizophrenia, bipolar disorder, major depressive disorder, autism spectrum disorder (ASD) and attention deficit hyperactivity disorder (ADHD) share common disease-associated genes. However, whether individuals with first-degree relatives (FDRs) with schizophrenia have a higher risk of these major psychiatric disorders requires further investigation. This study used Taiwan's National Health Insurance Research Database and identified 151 650 patients with schizophrenia and 227 967 individuals with FDRs with schizophrenia...
November 7, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/29049464/clustering-of-neuropsychiatric-disease-in-first-degree-and-second-degree-relatives-of-patients-with-amyotrophic-lateral-sclerosis
#2
Margaret O'Brien, Tom Burke, Mark Heverin, Alice Vajda, Russell McLaughlin, John Gibbons, Susan Byrne, Marta Pinto-Grau, Marwa Elamin, Niall Pender, Orla Hardiman
Importance: Amyotrophic lateral sclerosis (ALS) is a progressive neurodegenerative condition primarily involving the motor system. There is increasing epidemiologic evidence of an association between ALS and a wider spectrum of neurodegenerative and neuropsychiatric disorders among family members, including schizophrenia and psychotic illness and suicidal behavior. Objective: To examine the frequency and range of neuropsychiatric conditions that occur within individual first-degree and second-degree relatives of patients with ALS...
October 16, 2017: JAMA Neurology
https://www.readbyqxmd.com/read/29036385/the-latent-taxonicity-of-schizotypy-in-biological-siblings-of-probands-with-schizophrenia
#3
Richard J Linscott, Sarah E Morton
If schizotypy is a taxonic liability for schizophrenia with a general population prevalence of ~10%, it should also be taxonic among biological siblings of probands with schizophrenia. Moreover, assuming this is so, siblings' schizotypy class membership should be predicted by probands' familial load for psychotic disorder and clinical severity, consistent with a multifactorial polygenic threshold model of schizophrenia. We tested these hypotheses in the Genetic Risk and Outcome of Psychosis (GROUP) Study where siblings of probands (n = 792) and unaffected controls (n = 559) provided self-report ratings on the Community Assessment of Psychic Experiences (CAPE)...
October 4, 2017: Schizophrenia Bulletin
https://www.readbyqxmd.com/read/28981847/familial-risk-and-a-genome-wide-supported-drd2-variant-for-schizophrenia-predict-lateral-prefrontal-amygdala-effective-connectivity-during-emotion-processing
#4
Tiziana Quarto, Isabella Paparella, Davide De Tullio, Giovanna Viscanti, Leonardo Fazio, Paolo Taurisano, Raffaella Romano, Antonio Rampino, Rita Masellis, Teresa Popolizio, Pierluigi Selvaggi, Giulio Pergola, Alessandro Bertolino, Giuseppe Blasi
The brain functional mechanisms translating genetic risk into emotional symptoms in schizophrenia (SCZ) may include abnormal functional integration between areas key for emotion processing, such as the amygdala and the lateral prefrontal cortex (LPFC). Indeed, investigation of these mechanisms is also complicated by emotion processing comprising different subcomponents and by disease-associated state variables. Here, our aim was to investigate the relationship between risk for SCZ and effective connectivity between the amygdala and the LPFC during different subcomponents of emotion processing...
September 16, 2017: Schizophrenia Bulletin
https://www.readbyqxmd.com/read/28958455/schizotypal-traits-and-cognitive-performance-in-siblings-of-patients-with-psychosis
#5
L Moreno-Samaniego, Ana M Gaviria, E Vilella, J Valero, A Labad
INTRODUCTION: Schizotypy has been proposed to be the expression of genetic vulnerability to schizophrenia. The available literature shows cognitive similarities between schizotypy and schizophrenia, with mildly impaired performance being associated with schizotypy. This study aims to determine the relationship between schizotypy and cognitive performance in siblings of patients with psychosis. METHODS: Schizotypal features and cognitive performance on a neuropsychological battery were compared between 48 siblings of patients with psychosis and 44 healthy controls...
December 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28882829/childhood-cognitive-development-in-22q11-2-deletion-syndrome-case-control-study
#6
Samuel J R A Chawner, Joanne L Doherty, Hayley Moss, Maria Niarchou, James T R Walters, Michael J Owen, Marianne B M van den Bree
Background22q11.2 deletion syndrome (22q11.2DS) is associated with a high risk of childhood as well as adult psychiatric disorders, in particular schizophrenia. Childhood cognitive deterioration in 22q11.2DS has previously been reported, but only in studies lacking a control sample.AimsTo compare cognitive trajectories in children with 22q11.2DS and unaffected control siblings.MethodA longitudinal study of neurocognitive functioning (IQ, executive function, processing speed and attention) was conducted in children with 22q11...
October 2017: British Journal of Psychiatry: the Journal of Mental Science
https://www.readbyqxmd.com/read/28799427/quality-of-life-in-family-caregivers-of-schizophrenia-patients-in-spain-caregiver-characteristics-caregiving-burden-family-functioning-and-social-and-professional-support
#7
José M Ribé, Manel Salamero, Carles Pérez-Testor, Josep Mercadal, Concepción Aguilera, Margarida Cleris
OBJECTIVE: Caregivers experience physical and mental stress that ends up lowering their quality of life (QoL). Our goal was to research (a) the level of caregivers QoL; (b) the relationships between the demographic characteristics of the caregivers, their caregiving burden, their family functioning, their social and professional support and their QoL and (c) the best predictors of caregivers QoL. METHODS: 100 key caregivers (70% parents, 8% spouses, 17% siblings and 5% children) were studied using the world health organization quality of life-Bref (WHOQOL-BREF) to research their QoL, the Zarit Scale to assess their perception of their caregiving burden, the Social Network Questionnaire to examine their social support, the Family APGAR to assess the satisfaction with social support from the family and a professional support scale (Escala de Apoyo Profesional) to determine the professional support received by caregivers was performed...
August 11, 2017: International Journal of Psychiatry in Clinical Practice
https://www.readbyqxmd.com/read/28759882/oculomotricity-and-neurological-soft-signs-can-we-refine-the-endophenotype-a-study-in-subjects-belonging-to-the-spectrum-of-schizophrenia
#8
Simona Caldani, Isabelle Amado, Narjes Bendjemaa, François Vialatte, Célia Mam-Lam-Fook, Raphael Gaillard, Marie-Odile Krebs, Maria Pia Bucci
Alterations in eye tracking and motor impairments as well as Neurological Soft Signs (NSS) are frequently reported in patients with schizophrenia as well as in their relatives, and are proposed as endophenotype of the disease. This study investigated smooth pursuit eye movement and fixation task with distractors with a gap condition, two markers of inhibitory control mechanism, in 49 patients with schizophrenia, 24 ultra-high risk subjects, 41 full biological clinical siblings of patients and 48 controls. NSS were assessed as a marker of abnormal neurodevelopment...
June 8, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28744025/genetic-loci-associated-with-an-earlier-age-at-onset-in-multiplex-schizophrenia
#9
Annemarie L Woolston, Po-Chang Hsiao, Po-Hsiu Kuo, Shi-Heng Wang, Yin-Ju Lien, Chih-Min Liu, Hai-Gwo Hwu, Tzu-Pin Lu, Eric Y Chuang, Li-Ching Chang, Chien-Hsiun Chen, Jer-Yuarn Wu, Ming T Tsuang, Wei J Chen
An earlier age at onset (AAO) has been associated with greater genetic loadings in schizophrenia. This study aimed to identify modifier loci associated with an earlier AAO of schizophrenia. A genome-wide association analysis (GWAS) was conducted in 94 schizophrenia probands with the earliest AAO and 91 with the latest AAO. Candidate single nucleotide polymorphisms (SNPs) were then genotyped in the co-affected siblings and unrelated probands. Multi-SNP genetic risk scores (GRS) composed of the candidate loci were used to distinguish patients with an early or late AAO...
July 25, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28657695/rare-pdcd11-variations-are-not-associated-with-risk-of-schizophrenia-in-japan
#10
Satoshi Hoya, Yuichiro Watanabe, Akitoyo Hishimoto, Ayako Nunokawa, Naoshi Kaneko, Tatsuyuki Muratake, Naofumi Shinmyo, Ikuo Otsuka, Shujiro Okuda, Emiko Inoue, Hirofumi Igeta, Masako Shibuya, Jun Egawa, Naoki Orime, Ichiro Sora, Toshiyuki Someya
AIM: Rare gene variations are thought to confer substantial risk for schizophrenia. We performed a three-stage study to identify rare variations that have a strong impact on the risk of developing schizophrenia. METHODS: In the first stage, we prioritized rare missense variations using whole-exome sequencing (WES) data from three families, consisting of a proband, an affected sibling, and parents. In the second stage, we performed targeted resequencing of the PDCD11 coding region in 96 patients...
June 28, 2017: Psychiatry and Clinical Neurosciences
https://www.readbyqxmd.com/read/28615756/neurocognitive-impairments-in-unaffected-first-degree-relatives-of-schizophrenia
#11
Virupaksha Shanmugam Harave, Venkataram Shivakumar, Sunil V Kalmady, Janardhanan C Narayanaswamy, Shivarama Varambally, Ganesan Venkatasubramanian
BACKGROUND: Neurocognitive impairments of attention and executive functioning are trait abnormalities in schizophrenia, and these are considered to be endophenotypes. These deficits have been convincingly linked to prefrontal cortical functioning. In this study, we examined the cognitive performance in the domains of attention and executive functioning among first-degree relatives of Indian people with schizophrenia (high-risk [HR] patients) compared to healthy controls (HC). MATERIALS AND METHODS: Siblings of patients with DSM-IV schizophrenia, HR patients (n = 17), were compared with HC (n = 30) (matched as a group for age, sex, years of education, and handedness) using the following neurocognitive tests for attention and executive function - digit span test (DST), trail making test, letter-number sequencing (LNS), and spatial span test...
May 2017: Indian Journal of Psychological Medicine
https://www.readbyqxmd.com/read/28606213/is-emotional-intelligence-impaired-in-unaffected-siblings-of-patients-with-schizophrenia
#12
Beatrice Frajo-Apor, Georg Kemmler, Silvia Pardeller, Markus Huber, Christian Macina, Anna-Sophia Welte, Alex Hofer
OBJECTIVES: Social cognitive deficits have been discussed to be endophenotypes for schizophrenia and other serious mental illnesses. The current study aimed to assess emotional intelligence (EI) in unaffected siblings of schizophrenia patients to investigate its potential role as endophenotype for schizophrenia. METHODS: EI was measured in 56 schizophrenia patients, 57 unaffected siblings, and 127 healthy control subjects by using the Mayer-Salovey-Caruso Emotional Intelligence Test (MSCEIT)...
June 13, 2017: Journal of the International Neuropsychological Society: JINS
https://www.readbyqxmd.com/read/28531561/a-meta-analysis-of-neurocognition-in-youth-with-familial-high-risk-for-bipolar-disorder
#13
E Bora, A Özerdem
OBJECTIVE: Neuropsychological impairment, including deficits in social cognition is evident in subjects at genetic high-risk for psychosis. However, findings in youth at genetic risk to bipolar disorder (BP) have been suggested to be less supportive of premorbid deficits. We aimed to conduct a meta-analysis of cognitive deficits in youth with familiar risk for bipolar disorder (FHR-BD). METHODS: A novel meta-analysis of FHR-BD (mean age 10-25), including 18 studies (786 offsprings/siblings of patients with BD and 794 healthy controls), was conducted...
March 3, 2017: European Psychiatry: the Journal of the Association of European Psychiatrists
https://www.readbyqxmd.com/read/28467540/association-between-maternal-smoking-during-pregnancy-and-severe-mental-illness-in-offspring
#14
Patrick D Quinn, Martin E Rickert, Caroline E Weibull, Anna L V Johansson, Paul Lichtenstein, Catarina Almqvist, Henrik Larsson, Anastasia N Iliadou, Brian M D'Onofrio
Importance: Several recent population-based studies have linked exposure to maternal smoking during pregnancy to increased risk of severe mental illness in offspring (eg, bipolar disorder, schizophrenia). It is not yet clear, however, whether this association results from causal teratogenic effects or from confounding influences shared by smoking and severe mental illness. Objective: To examine the association between smoking during pregnancy and severe mental illness in offspring, adjusting for measured covariates and unmeasured confounding using family-based designs...
June 1, 2017: JAMA Psychiatry
https://www.readbyqxmd.com/read/28463748/using-short-range-and-long-range-functional-connectivity-to-identify-schizophrenia-with-a-family-based-case-control-design
#15
Wenbin Guo, Feng Liu, Jindong Chen, Renrong Wu, Lehua Li, Zhikun Zhang, Huafu Chen, Jingping Zhao
Abnormal short-range and long-range functional connectivities (FCs) have been implicated in the neurophysiology of schizophrenia. This study was conducted to examine the potential of short-range and long-range FCs for differentiating the patients from the controls with a family-based case-control design. Twenty-eight first-episode, drug-naive patients with schizophrenia, 28 unaffected siblings of the patients (family-based controls, FBCs), and 40 healthy controls (HCs) underwent resting-state functional magnetic resonance imaging (fMRI) scans...
April 24, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28416810/the-joint-impact-of-cognitive-performance-in-adolescence-and-familial-cognitive-aptitude-on-risk-for-major-psychiatric-disorders-a-delineation-of-four-potential-pathways-to-illness
#16
K S Kendler, H Ohlsson, R S E Keefe, K Sundquist, J Sundquist
How do joint measures of premorbid cognitive ability and familial cognitive aptitude (FCA) reflect risk for a diversity of psychiatric and substance use disorders? To address this question, we examined, using Cox models, the predictive effects of school achievement (SA) measured at age 16 and FCA-assessed from SA in siblings and cousins, and educational attainment in parents-on risk for 12 major psychiatric syndromes in 1 140 608 Swedes born 1972-1990. Four developmental patterns emerged. In the first, risk was predicted jointly by low levels of SA and high levels of FCA-that is a level of SA lower than would be predicted from the FCA...
April 18, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/28406917/methylomic-changes-in-individuals-with-psychosis-prenatally-exposed-to-endocrine-disrupting-compounds-lessons-from-diethylstilbestrol
#17
COMPARATIVE STUDY
Fabrice Rivollier, Boris Chaumette, Narjes Bendjemaa, Mélanie Chayet, Bruno Millet, Nematollah Jaafari, Amina Barhdadi, Louis-Philippe Lemieux Perreault, Sylvie Provost, Marie-Pierre Dubé, Raphaël Gaillard, Marie-Odile Krebs, Oussama Kebir
BACKGROUND: In the Western world, between 1940 and 1970, more than 2 million people were exposed in utero to diethylstilbestrol (DES). In exposed individuals, and in their descendants, adverse outcomes have been linked to such exposure, including cancers, genital malformations, and less consistently, psychiatric disorders. We aimed to explore whether prenatal DES exposure would be associated with DNA methylation changes, and whether these epigenetic modifications would be associated with increased risk of psychosis...
2017: PloS One
https://www.readbyqxmd.com/read/28353559/hyperactivity-of-the-default-mode-network-in-first-episode-drug-naive-schizophrenia-at-rest-revealed-by-family-based-case-control-and-traditional-case-control-designs
#18
Wenbin Guo, Feng Liu, Jindong Chen, Renrong Wu, Lehua Li, Zhikun Zhang, Huafu Chen, Jingping Zhao
Abnormal regional activity and functional connectivity of the default-mode network (DMN) have been reported in schizophrenia. However, previous studies may have been biased by unmatched case-control design. To limit such bias, the present study used both the family-based case-control design and the traditional case-control design to investigate abnormal regional activity of the DMN in patients with schizophrenia at rest.Twenty-eight first-episode, drug-naive patients with schizophrenia, 28 age-, sex-matched unaffected siblings of the patients (family-based controls, FBC), and 40 healthy controls (HC) underwent resting-state functional magnetic resonance imaging (fMRI) scans...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28343067/reading-problems-and-major-mental-disorders-co-occurrences-and-familial-overlaps-in-a-swedish-nationwide-cohort
#19
Martin Cederlöf, Barbara Maughan, Henrik Larsson, Brian M D'Onofrio, Robert Plomin
Reading problems often co-occur with ADHD and conduct disorder. However, the patterns of co-occurrence and familial overlap between reading problems and other psychiatric disorders have not been systematically explored. We conducted a register-based cohort study including 8719 individuals with reading problems and their siblings, along with matched comparison individuals. Conditional logistic regressions estimated risks for ADHD, autism, obsessive-compulsive disorder, anorexia nervosa, schizophrenia, bipolar disorder, depression, substance use disorder, and violent/non-violent criminality in individuals with reading problems and their siblings...
March 21, 2017: Journal of Psychiatric Research
https://www.readbyqxmd.com/read/28334933/disrupted-in-schizophrenia-1-is-essential-for-normal-hypothalamic-pituitary-interrenal-hpi-axis-function
#20
Helen Eachus, Charlotte Bright, Vincent T Cunliffe, Marysia Placzek, Jonathan D Wood, Penelope J Watt
Psychiatric disorders arise due to an interplay of genetic and environmental factors, including stress. Studies in rodents have shown that mutants for Disrupted-In-Schizophrenia-1 (DISC1), a well-accepted genetic risk factor for mental illness, display abnormal behaviours in response to stress, but the mechanisms through which DISC1 affects stress responses remain poorly understood. Using two lines of zebrafish homozygous mutant for disc1, we investigated behaviour and functioning of the hypothalamic-pituitary-interrenal (HPI) axis, the fish equivalent of the hypothalamic-pituitary-adrenal (HPA) axis...
June 1, 2017: Human Molecular Genetics
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