Abstract:
:Migration is a major risk factor for schizophrenia but the neurochemical processes involved are unknown. One candidate mechanism is through elevations in striatal dopamine synthesis and release. The objective of this research was to determine whether striatal dopamine function is elevated in immigrants compared to nonimmigrants and the relationship with psychosis. Two complementary case-control studies of in vivo dopamine function (stress-induced dopamine release and dopamine synthesis capacity) in immigrants compared to nonimmigrants were performed in Canada and the United Kingdom. The Canadian dopamine release study included 25 immigrant and 31 nonmigrant Canadians. These groups included 23 clinical high risk (CHR) subjects, 9 antipsychotic naïve patients with schizophrenia, and 24 healthy volunteers. The UK dopamine synthesis study included 32 immigrants and 44 nonimmigrant British. These groups included 50 CHR subjects and 26 healthy volunteers. Both striatal stress-induced dopamine release and dopamine synthesis capacity were significantly elevated in immigrants compared to nonimmigrants, independent of clinical status. These data provide the first evidence that the effect of migration on the risk of developing psychosis may be mediated by an elevation in brain dopamine function.
journal_name
Schizophr Bulljournal_title
Schizophrenia bulletinauthors
Egerton A,Howes OD,Houle S,McKenzie K,Valmaggia LR,Bagby MR,Tseng HH,Bloomfield MA,Kenk M,Bhattacharyya S,Suridjan I,Chaddock CA,Winton-Brown TT,Allen P,Rusjan P,Remington G,Meyer-Lindenberg A,McGuire PK,Mizrahi Rdoi
10.1093/schbul/sbw181subject
Has Abstractpub_date
2017-03-01 00:00:00pages
293-301issue
2eissn
0586-7614issn
1745-1701pii
sbw181journal_volume
43pub_type
杂志文章abstract::We examined neurocognitive correlates of three dimensions of schizotypy in 63 healthy first degree relatives of schizophrenia patients. Neurocognitive measures of attention, verbal memory, and prefrontal functioning were combined with self-report and interview measures of schizotypy. State-psychopathology (anxiety and...
journal_title:Schizophrenia bulletin
pub_type: 杂志文章
doi:10.1093/oxfordjournals.schbul.a006946
更新日期:2002-01-01 00:00:00
abstract::Visual illusions allow for strong tests of perceptual functioning. Perceptual impairments can produce superior task performance on certain tasks (i.e., more veridical perception), thereby avoiding generalized deficit confounds while tapping mechanisms that are largely outside of conscious control. Using a task based o...
journal_title:Schizophrenia bulletin
pub_type: 杂志文章
doi:10.1093/schbul/sbr055
更新日期:2011-07-01 00:00:00
abstract:BACKGROUND:Deficits in emotion processing are thought to underlie the key negative symptoms flat affect and anhedonia observed in psychotic disorders. This study investigated emotional experience and social behavior in the realm of daily life in a sample of patients with schizophrenia and schizoaffective disorder, stra...
journal_title:Schizophrenia bulletin
pub_type: 杂志文章
doi:10.1093/schbul/sbr137
更新日期:2013-01-01 00:00:00
abstract::Motor abnormalities in schizophrenia spectrum disorders (SSD) have increasingly attracted scientific interest in the past years. However, the neural mechanisms underlying parkinsonism in SSD are unclear. The present multimodal magnetic resonance imaging (MRI) study examined SSD patients with and without parkinsonism, ...
journal_title:Schizophrenia bulletin
pub_type: 杂志文章
doi:10.1093/schbul/sbaa007
更新日期:2020-07-08 00:00:00
abstract::This study tested hypothesized relationships between neuropsychological and psychophysiological variables and concurrent levels of clinical and psychosocial functioning in schizophrenia. The sample consisted of 40 subjects diagnosed with a chronic schizophrenia spectrum disorder and living in community-based settings....
journal_title:Schizophrenia bulletin
pub_type: 杂志文章
doi:10.1093/schbul/23.1.19
更新日期:1997-01-01 00:00:00
abstract::A substantial proportion of patients with schizophrenia experience the onset of their illness by age 18. Data from phenomenological, cognitive, neuroimaging, and genetic studies suggest a similar profile of clinical and neurobiological abnormalities between early- and adult-onset patients. However, children and adoles...
journal_title:Schizophrenia bulletin
pub_type: 社论
doi:10.1093/schbul/sbm123
更新日期:2008-01-01 00:00:00
abstract::Cognitive deficits are a central and debilitating aspect of schizophrenia and other major mental illnesses. Although they are largely refractory to pharmacotherapy, multiple studies have now shown that large and lasting improvements in cognition can result from behavioral interventions. We will review our work over th...
journal_title:Schizophrenia bulletin
pub_type: 杂志文章,评审
doi:10.1093/schbul/sbi038
更新日期:2005-10-01 00:00:00
abstract:OBJECTIVE:Both neurocognitive impairments and a history of childhood abuse are highly prevalent in patients with schizophrenia. Childhood trauma has been associated with memory impairment as well as hippocampal volume reduction in adult survivors. The aim of the following study was to examine the contribution of childh...
journal_title:Schizophrenia bulletin
pub_type: 杂志文章
doi:10.1093/schbul/sbp096
更新日期:2011-05-01 00:00:00
abstract::Clinical descriptions of perceptual and attentional anomalies in schizophrenia emphasize phenomena such as flooding, or inundation, by sensory stimuli. A failure of sensory "gating" mechanisms in the brain is hypothesized to account for these symptoms, and this hypothesis has led to a marked interest in their putative...
journal_title:Schizophrenia bulletin
pub_type: 杂志文章
doi:10.1093/oxfordjournals.schbul.a033402
更新日期:1999-01-01 00:00:00
abstract::Advances in psychopharmacology have produced medications with substantial efficacy in the treatment of positive and negative symptoms of schizophrenia and the prevention of relapse or symptom exacerbation after an acute episode. In the clinical setting, the individual patient's acceptance or rejection of prescribed ph...
journal_title:Schizophrenia bulletin
pub_type: 杂志文章,评审
doi:10.1093/schbul/23.4.637
更新日期:1997-01-01 00:00:00
abstract::The poverty and lack of social role in the lives of many people with schizophrenia seem similar to those of people in long-term unemployment, raising the possibility that there may be some commonalities in their time use and community functioning. To test this possibility, the social anxiety, time use, and activity pa...
journal_title:Schizophrenia bulletin
pub_type: 杂志文章
doi:10.1093/schbul/22.4.659
更新日期:1996-01-01 00:00:00
abstract::Mentalizing has been examined both in autism spectrum disorder (ASD) and schizophrenia (SCZ) primarily by either cognitive-linguistic (referred to as verbal) or emotion recognition from eyes (referred to as visual) mentalizing tasks. Each type of task is thought to measure different aspects of mentalizing. Differences...
journal_title:Schizophrenia bulletin
pub_type: 杂志文章,meta分析
doi:10.1093/schbul/sbt048
更新日期:2014-05-01 00:00:00
abstract::Since publication of the original Schizophrenia Patient Outcomes Research Team (PORT) treatment recommendations in 1998, considerable scientific advances have occurred in our knowledge about how to help persons with schizophrenia. Today an even stronger body of research supports the scientific basis of treatment. This...
journal_title:Schizophrenia bulletin
pub_type: 指南,杂志文章,实务指引
doi:10.1093/oxfordjournals.schbul.a007071
更新日期:2004-01-01 00:00:00
abstract::Traditional psychiatric treatment approaches have not been very successful with the "revolving door patient." A variety of findings suggest that the social network, as opposed to the individual patient, may be a more viable locus for intervention. A conceptual review and analysis of the literature reveals two construc...
journal_title:Schizophrenia bulletin
pub_type: 杂志文章
doi:10.1093/schbul/12.2.262
更新日期:1986-01-01 00:00:00
abstract::In a sample of 75 women recruited from the community, we measured trauma/maltreatment history and symptoms of schizotypal personality disorder, using both questionnaire and interview measures. As hypothesized, individuals with histories of trauma/maltreatment had elevated levels of schizotypal symptoms. Among types of...
journal_title:Schizophrenia bulletin
pub_type: 杂志文章
doi:10.1093/oxfordjournals.schbul.a006985
更新日期:2003-01-01 00:00:00
abstract::There is some support for the hypothesis that the factor structure of schizophrenia symptoms is similar to the factor structure of schizotypal symptoms in nonschizophrenia populations. However, no studies to date have examined schizotypal symptoms in patients with personality disorders. In this study, confirmatory fac...
journal_title:Schizophrenia bulletin
pub_type: 杂志文章
doi:10.1093/schbul/22.3.501
更新日期:1996-01-01 00:00:00
abstract:BACKGROUND:Similar to patients with other chronic disorders, patients with serious mental illness (SMI) are often poorly adherent with prescribed medications. OBJECTIVE:We conducted a randomized controlled trial examining the effectiveness of a pharmacy-based intervention (Meds-Help) in increasing antipsychotic medica...
journal_title:Schizophrenia bulletin
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1093/schbul/sbp121
更新日期:2011-07-01 00:00:00
abstract::Research into tardive dyskinesia, an involuntary movement disorder secondary to chronic neuroleptic treatment, has so far produced conflicting results with no clear clinical applications. Heterogeneous diagnostic criteria, research designs, and rating scales, plus an emphasis on single-drug trials, are probably respon...
journal_title:Schizophrenia bulletin
pub_type: 临床试验,杂志文章
doi:10.1093/schbul/5.1.1
更新日期:1979-01-01 00:00:00
abstract::The New York High-Risk Project began in 1971 as a prospective, longitudinal study of (1) children of one or two schizophrenic parents and (2) comparison groups of children whose parents had other or no psychiatric disorders. The former were examined because they were known to be at high risk--some 10-25 percent for ch...
journal_title:Schizophrenia bulletin
pub_type: 杂志文章
doi:10.1093/schbul/13.3.451
更新日期:1987-01-01 00:00:00
abstract::The search for a treatment of tardive dyskinesia (TD) has focused largely on cholinergic and GABAergic agents that are believed to attenuate striatal imbalances and bring about symptomatic control of dyskinetic movements. While numerous reports of the partial effectiveness of acute treatment with cholinergic or GABAer...
journal_title:Schizophrenia bulletin
pub_type: 杂志文章
doi:10.1093/schbul/7.4.571
更新日期:1981-01-01 00:00:00
abstract::The present functional magnetic resonance imaging study investigated the neural correlates of practice-associated activation changes in patients with schizophrenia and their association with symptom severity. A group of patients (n = 24) were divided into more successful and less successful learners and were asked to ...
journal_title:Schizophrenia bulletin
pub_type: 杂志文章
doi:10.1093/schbul/sbq028
更新日期:2010-05-01 00:00:00
abstract::In addition to introducing the six articles joined by our thematic outlook, this article addresses the importance of subcortical structures as they may be related to information processing and the life experience of schizophrenic patients. This is a heuristic exercise aimed at bridging the conceptual gaps between clin...
journal_title:Schizophrenia bulletin
pub_type: 杂志文章,评审
doi:10.1093/schbul/13.4.555
更新日期:1987-01-01 00:00:00
abstract::Lifetime prevalence of psychotic disorders varies widely across studies. Epidemiological surveys have rarely examined prevalences of specific psychotic disorders other than schizophrenia, and the majority used a single-phase design without employing clinical reappraisal interview for diagnostic verification. The curre...
journal_title:Schizophrenia bulletin
pub_type: 杂志文章
doi:10.1093/schbul/sbx056
更新日期:2017-10-21 00:00:00
abstract::Recent studies provide considerable evidence that schizophrenia and bipolar disorder may share overlapping etiologic determinants. Identifying disease-related genetic effects is a major focus in schizophrenia and bipolar disorder research, with implications for clarifying diagnosis and developing specific treatments f...
journal_title:Schizophrenia bulletin
pub_type: 杂志文章
doi:10.1093/schbul/sbn055
更新日期:2008-07-01 00:00:00
abstract:OBJECTIVE:Cross-sectional studies have shown associations between 22q11.2 deletion syndrome and schizophrenia. However, large-scale prospective studies have been lacking. We, therefore, conducted the first large-scale population based study on the risk of being diagnosed with schizophrenia in persons identified with 22...
journal_title:Schizophrenia bulletin
pub_type: 杂志文章
doi:10.1093/schbul/sbv195
更新日期:2016-05-01 00:00:00
abstract::Abnormalities in both time processing and dopamine (DA) neurotransmission have been observed in schizophrenia. Time processing seems to be linked to DA neurotransmission. The cognitive dysmetria hypothesis postulates that psychosis might be a manifestation of the loss of coordination of mental processes due to impaire...
journal_title:Schizophrenia bulletin
pub_type: 杂志文章
doi:10.1093/schbul/sbw065
更新日期:2016-11-01 00:00:00
abstract:BACKGROUND:Executive control of attention in schizophrenia has recently been assessed by means of the Attention Network Test (ANT). In the past, for tasks assessing executive attention, findings in schizophrenia have been contradictory, among others suggesting a lack of increased stimulus interference effects. Attentio...
journal_title:Schizophrenia bulletin
pub_type: 杂志文章
doi:10.1093/schbul/sbm155
更新日期:2008-11-01 00:00:00
abstract::Increased critical stimulus duration among nonpsychotic subjects with Minnesota Multiphasic Personality Inventory 2-7-8 profiles in the Merritt and Balogh letter-discrimination procedure is consistent with the view that this abnormality might be a vulnerability indicator for a poor prognosis, chronic type of schizophr...
journal_title:Schizophrenia bulletin
pub_type: 杂志文章
doi:10.1093/schbul/11.3.344
更新日期:1985-01-01 00:00:00
abstract::The rapid embracing of artificial intelligence in psychiatry has a flavor of being the current "wild west"; a multidisciplinary approach that is very technical and complex, yet seems to produce findings that resonate. These studies are hard to review as the methods are often opaque and it is tricky to find the suitabl...
journal_title:Schizophrenia bulletin
pub_type: 杂志文章
doi:10.1093/schbul/sbz105
更新日期:2020-01-04 00:00:00
abstract:BACKGROUND:The at-risk mental state for psychosis (ARMS) and the first episode of psychosis have been associated with structural brain abnormalities that could aid in the individualized early recognition of psychosis. However, it is unknown whether the development of these brain alterations predates the clinical deteri...
journal_title:Schizophrenia bulletin
pub_type: 杂志文章
doi:10.1093/schbul/sbs095
更新日期:2013-09-01 00:00:00