Abstract:
BACKGROUND:No objective diagnostic biomarkers or laboratory tests have yet been developed for psychotic illness. Magnetic resonance imaging (MRI) studies consistently find significant abnormalities in multiple brain structures in psychotic patients relative to healthy control subjects, but these abnormalities show substantial overlap with anatomic variation that is in the normal range and therefore nondiagnostic. Recently, efforts have been made to discriminate psychotic patients from healthy individuals using machine-learning-based pattern classification methods on MRI data. METHODS:Three-dimensional cortical gray matter density (GMD) maps were generated for 36 patients with recent-onset psychosis and 36 sex- and age-matched control subjects using a cortical pattern matching method. Between-group differences in GMD were evaluated. Second, the sparse multinomial logistic regression classifier included in the Multivariate Pattern Analysis in Python machine-learning package was applied to the cortical GMD maps to discriminate psychotic patients from control subjects. RESULTS:Patients showed significantly lower GMD, particularly in prefrontal, cingulate, and lateral temporal brain regions. Pattern classification analysis achieved 86.1% accuracy in discriminating patients from controls using leave-one-out cross-validation. CONCLUSIONS:These results suggest that even at the early stage of illness, psychotic patients present distinct patterns of regional cortical gray matter changes that can be discriminated from the normal pattern. These findings indicate that we can detect complex patterns of brain abnormality in early stages of psychotic illness, which has critical implications for early identification and intervention in individuals at ultra-high risk for developing psychosis/schizophrenia.
journal_name
Biol Psychiatryjournal_title
Biological psychiatryauthors
Sun D,van Erp TG,Thompson PM,Bearden CE,Daley M,Kushan L,Hardt ME,Nuechterlein KH,Toga AW,Cannon TDdoi
10.1016/j.biopsych.2009.07.019subject
Has Abstractpub_date
2009-12-01 00:00:00pages
1055-60issue
11eissn
0006-3223issn
1873-2402pii
S0006-3223(09)00893-2journal_volume
66pub_type
杂志文章abstract::Stable schizophrenic and schizoaffective outpatients underwent abrupt withdrawal from a fixed dose of neuroleptic. Prolactin concentrations were determined preceding and following drug withdrawal. Basal prolactin concentrations were significantly lower 3, 4, or 5 days following drug withdrawal than on subsequent days....
journal_title:Biological psychiatry
pub_type: 杂志文章
doi:10.1016/0006-3223(89)90016-4
更新日期:1989-06-01 00:00:00
abstract::The psychiatric histories of relatives of 17 boys admitted to an inpatient unit with "unsocialized aggressive" behavior and of 19 boys admitted with other problems were investigated by means of structured interviews. The interviews were rated blind and diagnoses made on the respondents and relatives described in the f...
journal_title:Biological psychiatry
pub_type: 杂志文章
doi:
更新日期:1978-02-01 00:00:00
abstract:BACKGROUND:Investigators have reported lack of normal asymmetry of lateralization in some schizophrenic patients, as measured postmortem and by preference and/or performance. It has been suggested that this lack of asymmetry is related to early onset of schizophrenia. The present study extends the inquiry by magnetic r...
journal_title:Biological psychiatry
pub_type: 临床试验,杂志文章
doi:10.1016/s0006-3223(98)00076-6
更新日期:1998-09-15 00:00:00
abstract::Seventeen drug-free patients with Alzheimer's disease (AD) and 15 normal elderly controls, of which 13 age- and sex-matched pairs were included, participated in a study of red blood cell (RBC) and plasma choline. Mean values for RBC choline, plasma choline, and the ratio of RBC/plasma choline did not differ between th...
journal_title:Biological psychiatry
pub_type: 杂志文章
doi:10.1016/0006-3223(85)90039-3
更新日期:1985-04-01 00:00:00
abstract:BACKGROUND:Preclinical and clinical evidence indicate that the glutamatergic system might play a role in the pathophysiology of mood disorders. This study was conducted to determine the efficacy and safety of riluzole, a glutamate-modulating agent, in bipolar depression. METHODS:This was an 8-week add-on study of rilu...
journal_title:Biological psychiatry
pub_type: 临床试验,杂志文章
doi:10.1016/j.biopsych.2004.11.023
更新日期:2005-02-15 00:00:00
abstract:BACKGROUND:Early onset of mood symptoms in bipolar disorder has been associated with poor outcome in many studies; however, the factors that might contribute to poor outcome have not been adequately investigated. METHODS:The first consecutive 1000 adult bipolar patients enrolled in the National Institute of Mental Hea...
journal_title:Biological psychiatry
pub_type: 杂志文章
doi:10.1016/j.biopsych.2004.01.022
更新日期:2004-05-01 00:00:00
abstract::Unlike disorders of other fields of medicine (eg., diabetes, heart disease), schizophrenia has been only marginally impacted by the study of animal models. This gap reflects the incomplete understanding of the causes and mechanisms of schizophrenia and the resulting lack of defined targets for model development. Howev...
journal_title:Biological psychiatry
pub_type: 杂志文章,评审
doi:10.1016/s0006-3223(01)01286-0
更新日期:2001-12-01 00:00:00
abstract::Sixty-five cocaine-dependent subjects were enrolled into a 10-week randomized, double-blind study to determine the safety and efficacy of the serotonin-2 receptor antagonist, ritanserin (10 mg/day), in reducing cocaine consumption and craving. All subjects also participated in a structured intensive outpatient psychos...
journal_title:Biological psychiatry
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1016/S0006-3223(96)00490-8
更新日期:1997-11-15 00:00:00
abstract::Serotonin (5-HT) is an important regulator of morphogenetic activities during early central nervous system development, including cell proliferation, migration, and differentiation. The 5-HT transporter (5-HTT) plays a pivotal role in brain 5-HT homeostasis. It is also the initial target for both antidepressant drugs ...
journal_title:Biological psychiatry
pub_type: 杂志文章,评审
doi:10.1016/s0006-3223(98)00121-8
更新日期:1998-08-01 00:00:00
abstract::The effects of naltrexone on both mood and cognition were examined in overweight male subjects. Subjects were randomly prescribed, in a double-blind fashion, either placebo or naltrexone for 8 weeks. The results of the study showed that a chronic administration of a high dose of naltrexone (300 mg/day) does not signif...
journal_title:Biological psychiatry
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1016/0006-3223(86)90050-8
更新日期:1986-03-01 00:00:00
abstract:BACKGROUND:Corticotropin-releasing hormone (CRH) hyperactivity in transgenic mice overexpressing CRH in the brain (CRH-OE(2122)) appears to be associated with chronic stress-like alterations, including increased CRH content in the hypothalamus, changes in hypothalamus-pituitary-adrenal axis regulation, and increased he...
journal_title:Biological psychiatry
pub_type: 杂志文章
doi:10.1016/s0006-3223(01)01323-3
更新日期:2002-04-01 00:00:00
abstract::Positron emission tomography (PET) measurements of cerebral glucose use were made in 18 patients with generalized anxiety disorder (GAD) during a passive viewing task off medication, and an active vigilance viewing task before and after medication or placebo treatment. In the passive viewing task, patients with GAD we...
journal_title:Biological psychiatry
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1016/0006-3223(91)90326-h
更新日期:1991-06-15 00:00:00
abstract::Smooth pursuit eye movements (SPEM) for two stimulus velocities (sinusoidal and triangular) were studied by visual inspection in 12 unmedicated RDC-diagnosed schizophrenic patients and in 13 matched controls. SPEM was worse in the patient group and their performance deteriorated with repeated presentations of the task...
journal_title:Biological psychiatry
pub_type: 杂志文章
doi:
更新日期:1983-09-01 00:00:00
abstract:BACKGROUND:Variations in cerebrospinal fluid (CSF) levels of the monoamine metabolites 5-hydroxyindoleacetic acid, 3-methoxy-4-hydroxyphenylglycol, and homovanillic acid have been associated with behavioral abnormalities in nonhuman primates, and with psychopathology in studies of children and adults. METHODS:We assay...
journal_title:Biological psychiatry
pub_type: 杂志文章
doi:10.1016/s0006-3223(98)00170-x
更新日期:1999-03-01 00:00:00
abstract::A nutritional survey, the Pittsburgh Appetite Test (PAT), was developed to study potential changes in appetite and food preference reported by patients during a depressive episode and during antidepressant treatment. We examined a group of 50 depressed outpatients who were drug-free for 2 weeks prior to treatment with...
journal_title:Biological psychiatry
pub_type: 杂志文章
doi:10.1016/0006-3223(87)90180-6
更新日期:1987-05-01 00:00:00
abstract::In a neuroendocrine challenge paradigm, the present study investigated responses of schizophrenic patients to m-chlorophenylpiperazine (MCPP), a serotonin (5-hydroxytryptamine, 5HT) agonist. In an oral dose of 0.25 mg/kg, MCPP was administered in a placebo-controlled double-blind design to male schizophrenic patients ...
journal_title:Biological psychiatry
pub_type: 临床试验,杂志文章
doi:10.1016/0006-3223(91)90233-c
更新日期:1991-10-15 00:00:00
abstract::Quantitative and qualitative measures of brain morphology were derived through CT scans using computer-assisted methodology in patients with schizophrenia or schizo-affective psychosis and headache controls. Schizophrenics had significantly higher density of white matter, together with greater right vs. left asymmetry...
journal_title:Biological psychiatry
pub_type: 杂志文章
doi:
更新日期:1984-07-01 00:00:00
abstract:BACKGROUND:There is increasing evidence that antipsychotic (APD) may affect brain structure directly. To examine this, we developed a rodent model that uses clinically relevant doses and serial magnetic resonance imaging (MRI), followed by postmortem histopathological analysis to study the effects of APD on brain struc...
journal_title:Biological psychiatry
pub_type: 杂志文章
doi:10.1016/j.biopsych.2010.11.010
更新日期:2011-05-15 00:00:00
abstract:BACKGROUND:Recent studies have raised concerns about subtle long-lasting neurobiological changes that might be triggered by exposure to Cannabis derivatives, especially in a critical phase of brain maturation, such as puberty. The mesolimbic dopamine (DA) system, involved in the processing of drug-induced reward, is a ...
journal_title:Biological psychiatry
pub_type: 杂志文章
doi:10.1016/j.biopsych.2004.05.006
更新日期:2004-07-15 00:00:00
abstract:BACKGROUND:Pediatric Bipolar Disorder (BD) has been associated with a number of neurocognitive deficits not dissimilar to ADHD. This study compared neuropsychological profiles of 4 groups of adolescents (14-17 years): 41 Normal Controls (NC), 30 ADHD, 12 BD and 12 combined (BD+ADHD). METHODS:Participants were identifi...
journal_title:Biological psychiatry
pub_type: 杂志文章
doi:10.1016/j.biopsych.2006.03.067
更新日期:2006-11-01 00:00:00
abstract:BACKGROUND:Survival and differentiation of neurons and the formation and maintenance of synapses in the cerebral cortex may be affected in schizophrenia. Since neurotrophins play an important role in these events, behavioral effects relevant to schizophrenia were investigated in rats that had compromised neurotrophin f...
journal_title:Biological psychiatry
pub_type: 杂志文章
doi:10.1016/j.biopsych.2003.12.015
更新日期:2004-04-15 00:00:00
abstract:BACKGROUND:Fatigue is highly prevalent and causes serious disruption in quality of life. Although the underlying biological mechanism is unknown, increases in inflammation have been implicated. This prospective study examined the association between C-reactive protein (CRP), a biomarker of systemic inflammation, and fa...
journal_title:Biological psychiatry
pub_type: 杂志文章,多中心研究
doi:10.1016/j.biopsych.2009.06.008
更新日期:2009-11-01 00:00:00
abstract:BACKGROUND:Chronic life stress, such as the stress of caregiving, can promote pathophysiology, but the underlying cellular mechanisms are not well understood. Chronic stress may induce recalibrations in mitochondria leading to changes either in mitochondrial content per cell, or in mitochondrial functional capacity (i....
journal_title:Biological psychiatry
pub_type: 杂志文章
doi:10.1016/j.biopsych.2018.01.012
更新日期:2018-07-01 00:00:00
abstract:BACKGROUND:Posttraumatic stress disorder (PTSD) is associated with increased risk for age-related diseases and early mortality. An accelerated rate of biological aging could contribute to this increased risk. To investigate, we assessed leukocyte telomere length (LTL), an emerging marker of biological age, in men and w...
journal_title:Biological psychiatry
pub_type: 杂志文章
doi:10.1016/j.biopsych.2011.01.035
更新日期:2011-09-01 00:00:00
abstract:BACKGROUND:One goal of this prospective longitudinal study was to identify new group A beta-hemolytic streptococcal infections (GABHS) in children and adolescents with Tourette syndrome (TS) and/or obsessive-compulsive disorder (OCD) compared with healthy control subjects. We then examined the power of GABHS infections...
journal_title:Biological psychiatry
pub_type: 杂志文章
doi:10.1016/j.biopsych.2009.08.020
更新日期:2010-04-01 00:00:00
abstract:BACKGROUND:The implication of serotonin in suicide and affective disease explains why the 5-HT(2A) receptor gene has been proposed as a candidate gene in these disorders, although with conflicting results. METHODS:We analysed the distribution of the 5-HT(2A)-1438A/G genetic polymorphism in 192 patients with major affe...
journal_title:Biological psychiatry
pub_type: 杂志文章
doi:10.1016/s0006-3223(01)01228-8
更新日期:2002-05-01 00:00:00
abstract::Evidence is presented for the occurrence of a locus for schizotaxia on the short arm of chromosome 6. This derives from study of 63 informative members of seven pedigrees in which the proband and a parent (or a sib of parent) suffered with schizophrenia and other kin were either normal or fell within a spectrum of con...
journal_title:Biological psychiatry
pub_type: 杂志文章
doi:
更新日期:1979-02-01 00:00:00
abstract::Tricyclic antidepressants are thought to act primarily via effects on adrenergic neurotransmitters. Recent research supports the concept that a major function of the central adrenergic system is the modulation of cerebral fluid dynamics. Based on this concept, studies in the rat were conducted to assess the effects of...
journal_title:Biological psychiatry
pub_type: 杂志文章
doi:
更新日期:1979-04-01 00:00:00
abstract:BACKGROUND:Immune signaling pathways influence neurodevelopment and are hypothesized to contribute to the etiology of autism spectrum disorder (ASD). We aimed to assess risk of ASD in relation to levels of neonatal acute phase proteins (APPs), key components of innate immune function, measured in neonatal dried blood s...
journal_title:Biological psychiatry
pub_type: 杂志文章
doi:10.1016/j.biopsych.2020.09.005
更新日期:2020-09-10 00:00:00
abstract:BACKGROUND:The prodromal phase of schizophrenic disorders has been described prospectively. The present study aimed to determine the short-term efficacy and safety of olanzapine treatment of prodromal symptoms compared with placebo. METHODS:This was a double-blind, randomized, parallel-groups, placebo-controlled trial...
journal_title:Biological psychiatry
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1016/s0006-3223(03)00321-4
更新日期:2003-08-15 00:00:00