Abstract：
:The search for genes conferring liability for schizophrenia may be aided by the identification of endophenotypes. Response selection is a heritable cognitive function that is impaired in patients with schizophrenia and their unaffected siblings. The abnormalities in cerebral function that presumably underlie the deficit in patients and unaffected siblings remain to be elucidated. Cerebral neurophysiology during performance of a 4-choice reaction time (CRT) task in 25 patients with schizophrenia (15 medication free first episode (FEP) and 10 chronic patients), 32 controls, and 12 unaffected siblings of individuals with schizophrenia was investigated using fMRI. CRT was impaired in both medication free FEP and chronic patients with schizophrenia, and unaffected siblings. FEP patients, chronic patients, and unaffected siblings demonstrated greater BOLD response in the right dorsolateral prefrontal cortex (dlPFC) during CRT task blocks. The nature of the altered activation in the dlPFC was further examined using functional connectivity analysis. This revealed marked reductions in connectivity between the right dlPFC and multiple brain regions in both patient groups and, to a lesser degree, unaffected siblings. The magnitude of connectivity between right dlPFC and inferior parietal lobule correlated with task performance in the combined patient/unaffected siblings group, but not controls suggesting that the network of brain regions recruited to perform the task differed as a function of genetic liability for schizophrenia. The findings suggest that altered activity and connectivity of the right dlPFC appears to be related to genetic vulnerability for schizophrenia and may represent a potential endophenotype of the disorder.
journal_name
Schizophr Resjournal_title
Schizophrenia researchauthors
Woodward ND,Waldie B,Rogers B,Tibbo P,Seres P,Purdon SEdoi
10.1016/j.schres.2008.11.028subject
Has Abstractpub_date
2009-04-01 00:00:00pages
182-90issue
1-3eissn
0920-9964issn
1573-2509pii
S0920-9964(08)00561-6journal_volume
109pub_type
杂志文章abstract：:Psychotic-like experiences (PLEs) are part of a continuum of psychosis. Previous longitudinal studies highlighted a relationship between peripheral inflammation during childhood and onset of PLEs in adulthood. In this study, we tested if this association is mediated by internalising and externalising symptoms experien...
journal_title：Schizophrenia research
pub_type： 杂志文章
doi：10.1016/j.schres.2020.11.009
更新日期：2020-12-01 00:00:00
abstract：:Two previous studies suggested that childhood cat ownership is a possible risk factor for later developing schizophrenia or other serious mental illness. We therefore used an earlier, large NAMI questionnaire to try and replicate this finding. The results were the same, suggesting that cat ownership in childhood is si...
journal_title：Schizophrenia research
pub_type： 杂志文章
doi：10.1016/j.schres.2015.03.036
更新日期：2015-06-01 00:00:00
abstract：BACKGROUND:While poor premorbid functioning is associated with poorer outcomes in psychotic illnesses, little is known about whether it is also a risk factor for suicide attempts. OBJECTIVE:The current study examined the association of premorbid functioning and suicide attempts in a county-wide cohort of first-admissi...
journal_title：Schizophrenia research
pub_type： 杂志文章
doi：10.1016/j.schres.2009.11.005
更新日期：2010-02-01 00:00:00
abstract：:The memory profile of acute and chronic schizophrenic patients was examined according to the information processing model, with which encoding, retention and retrieval processes of these patients were compared. The effects of an external organizational strategy on their verbal learning and memory were also examined. T...
journal_title：Schizophrenia research
pub_type： 杂志文章
doi：10.1016/s0920-9964(99)00078-x
更新日期：2000-02-14 00:00:00
abstract：OBJECTIVE:This study aims to differentiate schizoaffective disorder (SAD) and bipolar-I-disorder (BD) in first-episode psychotic mania (FEPM). METHODS:All 134 patients from an epidemiological first-episode psychosis cohort (N=786) with FEPM and an 18-month follow-up final diagnosis of SAD (n=36) or BD (n=98) were asse...
journal_title：Schizophrenia research
pub_type： 杂志文章
doi：10.1016/j.schres.2012.07.010
更新日期：2012-09-01 00:00:00
abstract：:Catatonia is a severe psychomotor syndrome that frequently occurs in patients with schizophrenia spectrum disorders (SSD). Accumulating neuroimaging evidence suggests orbitofrontal, frontoparietal and cerebellar network dysfunction in catatonia. Very little is known about contributions of brainstem regions (as part of...
journal_title：Schizophrenia research
pub_type： 杂志文章
doi：10.1016/j.schres.2020.09.025
更新日期：2020-10-01 00:00:00
abstract：:The natural history of neurocognitive impairments in schizophrenia is unclear. We aimed to characterise this in an epidemiological first-episode cohort and relate it to long-term outcome. All but 1 of 112 first-episode psychosis cases ascertained from a geographical catchment area were traced at 10-12 years. Neurocogn...
journal_title：Schizophrenia research
pub_type： 杂志文章
doi：10.1016/s0920-9964(03)00014-8
更新日期：2003-12-15 00:00:00
abstract：:Deficits in nonverbal vocal expression (e.g., blunted vocal affect, alogia) are a hallmark of schizophrenia and are a focus of the Research Domain Criteria initiative from the National Institute of Mental Health. Results from studies using symptom rating scales suggest that these deficits are profound; on the order of...
journal_title：Schizophrenia research
pub_type： 杂志文章,meta分析,评审
doi：10.1016/j.schres.2014.09.013
更新日期：2014-11-01 00:00:00
abstract：:Although a substance use disorder (SUD) is traditionally associated with psycho-bio-social impairments, recent investigations among persons with schizophrenia (Sz) generated divergent results. Certain persons with Sz+SUD might in fact present better social and cognitive functioning than persons with Sz without SUD. Th...
journal_title：Schizophrenia research
pub_type： 杂志文章,meta分析
doi：10.1016/j.schres.2007.04.022
更新日期：2008-03-01 00:00:00
abstract：:Glutamate cycling is critically important for neurotransmission, and may be altered in schizophrenia. The excitatory amino acid transporters (EAATs) facilitate the reuptake of glutamate from the synaptic cleft and have a key role in glutamate cycling. We hypothesized that expression of the EAATs and the EAAT regulatin...
journal_title：Schizophrenia research
pub_type： 杂志文章
doi：10.1016/j.schres.2008.06.012
更新日期：2008-09-01 00:00:00
abstract：:Eleven acutely psychotic patients with schizophrenia or schizoaffective disorder underwent a 5-7 day drug-washout period (with lorazepam allowed) prior to participating in a 6-week controlled dose haloperidol trial. Patients were evaluated longitudinally with clinical ratings and with plasma measures of the catecholam...
journal_title：Schizophrenia research
pub_type： 杂志文章
doi：10.1016/0920-9964(93)90074-s
更新日期：1993-06-01 00:00:00
abstract：OBJECTIVES:Recent reports of antibodies to heat shock proteins 60kDa (HSP60) and HSP70 suggested that antibodies to the heat shock protein that plays a protective role against environmental stresses in a cell might be related to the pathogenesis of schizophrenia, although the antibody to HSP90 had not yet been identifi...
journal_title：Schizophrenia research
pub_type： 杂志文章
doi：10.1016/s0920-9964(00)00091-8
更新日期：2001-10-01 00:00:00
abstract：OBJECTIVE:While "dual diagnosis" involving both psychiatric and substance use disorders has long been a focus of schizophrenia research, recent studies have advocated for a shift of focus to multimorbidity, addressing comorbidity from both additional psychiatric disorders and substance use disorders. We hypothesized th...
journal_title：Schizophrenia research
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.schres.2018.04.035
更新日期：2018-11-01 00:00:00
abstract：:There has been increasing interest in studying the impact of physical activity on the psychological and physical well-being and functioning in patients with first-episode psychosis. The exploration of factors which contribute to physical activity in psychosis may open up opportunities for improvement of functional out...
journal_title：Schizophrenia research
pub_type： 杂志文章
doi：10.1016/j.schres.2013.08.034
更新日期：2013-11-01 00:00:00
abstract：:The minor neurological and cognitive deficits consistently reported in psychoses may reflect the same underlying brain dysfunction. Still, even in healthy individuals minor neurological abnormalities are associated with worse cognitive function. Therefore, establishing which neurological and cognitive deficits are spe...
journal_title：Schizophrenia research
pub_type： 杂志文章
doi：10.1016/j.schres.2012.09.016
更新日期：2012-12-01 00:00:00
abstract：:A recent single-site study (Fisher et al., 2009. Am J Psychiatry. 166 (7) 805-11) showed that repeated training with the Brain Fitness Program (BFP) improved performance on a battery of neuropsychological tasks. If replicated these data suggest an important non-pharmacological method for ameliorating cognitive impairm...
journal_title：Schizophrenia research
pub_type： 临床试验,杂志文章,多中心研究
doi：10.1016/j.schres.2012.01.042
更新日期：2012-08-01 00:00:00
abstract：:Social skill and role functioning were assessed in matched groups of patients with DSM-III-R schizoaffective disorder, bipolar disorder, and schizophrenia. Schizophrenics were categorized as negative syndrome or non-negative on the basis of the SANS. The negative schizophrenics were significantly more impaired on almo...
journal_title：Schizophrenia research
pub_type： 杂志文章
doi：10.1016/0920-9964(89)90032-7
更新日期：1989-07-01 00:00:00
abstract：:Widely used in industrialized countries, cannabis is a neuromodulator substance. The cannabinoid system is present at critical stages of retinal processing. We have recently shown a delay in bipolar and ganglion cell responses in regular cannabis users, as observed using flash (fERG) and pattern (PERG) electroretinogr...
journal_title：Schizophrenia research
pub_type： 杂志文章
doi：10.1016/j.schres.2019.01.013
更新日期：2020-05-01 00:00:00
abstract：:Most individuals with schizophrenia will be confronted with some form of stigma. In recent years, clinicians and family members have increasingly contested the term "schizophrenia". Many of them discuss changing this name, as a means to fight stigma. Up until now, surprisingly, most research has been conducted using s...
journal_title：Schizophrenia research
pub_type： 杂志文章
doi：10.1016/j.schres.2019.11.054
更新日期：2020-02-01 00:00:00
abstract：:Schizoaffective disorder is a common diagnosis in clinical practice but its nosological status has been subject to debate ever since it was conceptualized. Although it is key that diagnostic reliability is sufficient, schizoaffective disorder has been reported to have low interrater reliability. Evidence based on syst...
journal_title：Schizophrenia research
pub_type： 杂志文章,meta分析,评审
doi：10.1016/j.schres.2016.07.012
更新日期：2016-10-01 00:00:00
abstract：INTRODUCTION:EEG power in the delta, theta and beta1 bands has been shown to be positively correlated with negative symptoms in first episode psychotic patients. The present study investigates this correlation in an "at risk mental state for psychosis" (ARMS) with the aim to improve prediction of transition to psychosi...
journal_title：Schizophrenia research
pub_type： 杂志文章
doi：10.1016/j.schres.2010.08.031
更新日期：2010-11-01 00:00:00
abstract：:Insight and hopelessness have been reported to be associated with suicidality in schizophrenia. In addition, there is evidence that diminished insight is correlated with impairment in some domains of cognitive function in schizophrenia. The purpose of this study was to clarify the relative importance for suicidality i...
journal_title：Schizophrenia research
pub_type： 杂志文章
doi：10.1016/s0920-9964(02)00310-9
更新日期：2003-03-01 00:00:00
abstract：OBJECTIVE:Quality of life (QOL) is considered an important outcome in the treatment of schizophrenia, but the determinants of QOL are poorly understood in this population. Furthermore, previous studies have relied on combined measures of subjective QOL (usually defined as life satisfaction) and objective QOL (usually d...
journal_title：Schizophrenia research
pub_type： 杂志文章
doi：10.1016/j.schres.2007.09.001
更新日期：2008-01-01 00:00:00
abstract：OBJECTIVES:White matter (WM) abnormalities are one of the most widely and consistently reported findings in schizophrenia (SZ) and bipolar disorder (BD). If these abnormalities are inherited determinants of illness, suitable to be classified as an endophenotype, relatives of patients must also have them at higher rate ...
journal_title：Schizophrenia research
pub_type： 杂志文章,评审
doi：10.1016/j.schres.2014.12.008
更新日期：2015-02-01 00:00:00
abstract：BACKGROUND:Metabolic abnormalities and weight gain are an important problem in patients with schizophrenia. An instrument to evaluate body image and self-esteem related to weight has recently been developed (B-WISE). The first objective was to evaluate whether the findings of the original validation study could be conf...
journal_title：Schizophrenia research
pub_type： 杂志文章
doi：10.1016/j.schres.2006.07.025
更新日期：2006-12-01 00:00:00
abstract：:The first phase of the Consortium on the Genetics of Schizophrenia (COGS-1) showed performance deficits in learning and memory on the California Verbal Learning Test, Second Edition (CVLT-II) in individuals with schizophrenia (SZ), compared to healthy comparison subjects (HCS). A question is whether the COGS-1 study, ...
journal_title：Schizophrenia research
pub_type： 杂志文章,多中心研究
doi：10.1016/j.schres.2014.10.029
更新日期：2015-04-01 00:00:00
abstract：BACKGROUND:In randomized controlled trials of antipsychotics, various cutoffs have been used to define response on continuous outcome measures. AIMS:To find a summary effect measure that remains constant across different definitions of response. METHOD:We conducted secondary analyses of individual patient data from 1...
journal_title：Schizophrenia research
pub_type： 杂志文章,meta分析
doi：10.1016/j.schres.2010.10.016
更新日期：2011-03-01 00:00:00
abstract：OBJECTIVE:To assess the prevalence and correlates of antipsychotic polypharmacy (APP) across decades and regions. METHODS:Electronic PubMed/Google Scholar search for studies reporting on APP, published from 1970 to 05/2009. Median rates and interquartile ranges (IQR) were calculated and compared using non-parametric t...
journal_title：Schizophrenia research
pub_type： 杂志文章,meta分析,评审
doi：10.1016/j.schres.2012.03.018
更新日期：2012-06-01 00:00:00
abstract：:Schizophrenia is associated with subtle developmental compromise, but the degree to which this is also associated with heritability and genetic risk is uncertain. The goal of the current study was to investigate the childhood, adolescent, and early adulthood social and academic function of patients with schizophrenia,...
journal_title：Schizophrenia research
pub_type： 杂志文章
doi：10.1016/j.schres.2009.04.007
更新日期：2009-07-01 00:00:00
abstract：:Autism and schizophrenia share multiple phenotypic and genotypic markers, and there is ongoing debate regarding the relationship of these two disorders. To examine whether cortical dynamics are similar across these disorders, we directly compared fMRI responses to visual, somatosensory and auditory stimuli in adults w...
journal_title：Schizophrenia research
pub_type： 杂志文章
doi：10.1016/j.schres.2016.03.036
更新日期：2016-08-01 00:00:00
