Abstract：
:Because available evidence suggests that alterations in the serotonergic as well as dopaminergic tones underlie hallucinatory activity, we decided to investigate whether serotonin and dopamine pathways are modified in alcoholics with a history of hallucinosis. Brain serotonin has been shown to depend on the plasma ratio of its precursor tryptophan over other amino acids competing with it for brain entry. Similarly, brain dopamine depends on the plasma ratio of its precursors phenylalanine and dopamine over their competitors. Amino acid abnormalities are common in alcoholics. For this reason, we assessed whether alcoholics who had experienced hallucinations have alterations in amino acids believed to be associated with neurotransmitter modifications. Patients with a history of hallucinations were found to have a tryptophan ratio significantly lower than that of patients without such a history, and a tyrosine + phenylalanine ratio significantly higher. These data suggest that amino acid abnormalities believed to result in decreased brain serotonin and in increased brain dopamine render certain individuals more vulnerable to hallucinatory experiences.
journal_name
Biol Psychiatryjournal_title
Biological psychiatryauthors
Branchey L,Branchey M,Worner TM,Zucker D,Shaw S,Lieber CSdoi
10.1016/0006-3223(85)90175-1subject
Has Abstractpub_date
1985-11-01 00:00:00pages
1167-73issue
11eissn
0006-3223issn
1873-2402pii
0006-3223(85)90175-1journal_volume
20pub_type
杂志文章abstract：:The dexamethasone suppression test (DST) and sleep EEG were compared in three different descriptive diagnostic schemes in 70 adult patients with nonpsychotic, unipolar major depressive disorder according to Research Diagnostic Criteria. Endogenous (E)/nonendogenous (NE), primary/secondary, and Winokur's family history...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：
更新日期：1982-03-01 00:00:00
abstract：BACKGROUND:First degree relatives (FDR) of patients with schizophrenia have higher risk of developing schizophrenia than the general population. Previous positron emission tomography (PET) studies have shown that striatal presynaptic dopamine synthesis capacity is increased in schizophrenia. We investigated whether thi...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/j.biopsych.2007.04.017
更新日期：2008-01-01 00:00:00
abstract：BACKGROUND:The neural projections from the infralimbic region of the prefrontal cortex to the amygdala are important for the maintenance of conditioned fear extinction. Neurons in this pathway exhibit a unique pattern of structural plasticity that is sex-dependent, but the relationship between the morphologic character...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/j.biopsych.2014.11.014
更新日期：2015-08-01 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：:Our intent was to investigate systematically the overlap between conduct disorder (CD) and bipolar disorder (BPD). We hypothesized that neither CD nor manic symptoms were secondary to the other disorder and that children with the two disorders would have correlates of both. Results from a series of programmatic studie...
journal_title：Biological psychiatry
pub_type： 杂志文章,评审
doi：10.1016/s0006-3223(03)00009-x
更新日期：2003-06-01 00:00:00
abstract：BACKGROUND:Identifying factors that modify responsiveness to pharmacotherapies for alcohol dependence is important for treatment planning. Cigarette smoking predicts more severe alcohol dependence and poorer treatment response in general. Nevertheless, there is limited research on cigarette smoking as a potential predi...
journal_title：Biological psychiatry
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.biopsych.2012.03.023
更新日期：2012-11-15 00:00:00
abstract：:Research on mood and anxiety disorders has historically proceeded without sufficient reference to the growing body of work on the nature of typical emotional development and temperament. Reviewing data from several studies, we consider experiential, biological, and genetic factors as providing causal input to typical ...
journal_title：Biological psychiatry
pub_type： 杂志文章,评审
doi：10.1016/s0006-3223(00)01003-9
更新日期：2000-12-15 00:00:00
abstract：:This article has been retracted, consistent with Elsevier Policy on Article Withdrawal. Please see . The Publisher apologises for any inconvenience this may cause. ...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/j.biopsych.2005.10.027
更新日期：2006-02-14 00:00:00
abstract：:Short-term reduction in plasma tryptophan (tryptophan depletion) produces a relapse of depressive symptoms in 60% of previously depressed patients recently recovered with serotonin reuptake inhibitor treatment. Tryptophan depletion does not consistently increase depressive symptoms in unmedicated depressed patients or...
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)00224-7
更新日期：1997-05-01 00:00:00
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journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/j.biopsych.2007.05.027
更新日期：2008-03-01 00:00:00
abstract：:Velocity of blood flow in the middle cerebral artery was measured with transcranial Doppler flowmeter before, during, and 1 hr after smoking a marijuana cigarette and a placebo cigarette during two separate visits to the laboratory. Ten healthy, right-handed male volunteers with a history of marijuana smoking took par...
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(92)90019-v
更新日期：1992-07-15 00:00:00
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journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/j.biopsych.2009.04.013
更新日期：2009-08-15 00:00:00
abstract：BACKGROUND:A number of studies have provided evidence for genetic modulation of brain structure in unaffected family members (FM) of schizophrenia patients using conventional volumetric analysis. High-dimensional pattern classification methods have been reported to have the capacity to determine subtle and spatially co...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/j.biopsych.2007.03.015
更新日期：2008-01-01 00:00:00
abstract：BACKGROUND:Glutamatergic dysfunction has been implicated in the pathophysiology of schizophrenia. However, so far there is limited direct evidence of altered in vivo glutamate concentrations in the brains of patients with schizophrenia. To test the hypothesis that altered glutamatergic neurotransmission might play a ro...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/j.biopsych.2005.04.041
更新日期：2005-11-01 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：:Accumulating evidence supports the view that deregulation of the immune system represents an important vulnerability factor for psychosis. In a subgroup of psychotic patients, the high comorbidity with autoimmune and chronic inflammatory conditions suggests a common underlying immune abnormality leading to both condit...
journal_title：Biological psychiatry
pub_type： 杂志文章,评审
doi：10.1016/j.biopsych.2013.09.037
更新日期：2014-02-15 00:00:00
abstract：BACKGROUND:Variations in maternal care in the rat associate with robust differences in hippocampal development and synaptic plasticity in the offspring. Maternal care also influences pituitary-adrenal stress responses and corticosterone (CORT) regulation of hippocampal plasticity. N-methyl-D-aspartate receptors (NMDAR)...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/j.biopsych.2012.03.016
更新日期：2012-09-15 00:00:00
abstract：:Although much is now known about the neural basis of fear acquisition, the mechanisms of fear inhibition or suppression remain largely obscure. Fear inhibition is studied in the laboratory through the use of an extinction procedure, in which an animal (typically a rat) is exposed to nonreinforced presentations of a co...
journal_title：Biological psychiatry
pub_type： 杂志文章,评审
doi：10.1016/s0006-3223(02)01507-x
更新日期：2002-11-15 00:00:00
abstract：:Interpersonal and social rhythm therapy is an individual psychotherapy designed specifically for the treatment for bipolar disorder. Interpersonal and social rhythm therapy grew from a chronobiological model of bipolar disorder postulating that individuals with bipolar disorder have a genetic predisposition to circadi...
journal_title：Biological psychiatry
pub_type： 杂志文章,评审
doi：10.1016/s0006-3223(00)00969-0
更新日期：2000-09-15 00:00:00
abstract：BACKGROUND:Down syndrome (DS) is a genetic disorder (trisomy 21 in 96% of cases), associated with an excess of a key enzyme involved with free radical metabolism (FRM), superoxide dismutase-1 (SOD-1), that is encoded by a gene on chromosome 21. Consequently, SOD-1 activity is elevated in DS, which also occurs in condit...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/s0006-3223(99)00026-8
更新日期：1999-12-15 00:00:00
abstract：BACKGROUND:Several studies have reported elevated S100B serum levels in schizophrenia. Our study focused on its scavenger, soluble receptor for advanced glycation end products (sRAGE). Given the benefits of sRAGE in metabolic and inflammatory diseases, we hypothesized a similar effect in schizophrenia. METHODS:S100B a...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/j.biopsych.2008.10.044
更新日期：2009-06-15 00:00:00
abstract：:Parental stress exposures are implicated in the risk for offspring neurodevelopmental and neuropsychiatric disorders, prompting critical examination of preconception and prenatal periods as vulnerable to environmental insults such as stress. Evidence from human studies and animal models demonstrates the influence that...
journal_title：Biological psychiatry
pub_type： 杂志文章,评审
doi：10.1016/j.biopsych.2017.10.005
更新日期：2018-05-15 00:00:00
abstract：BACKGROUND:In view of the effects of stress on synaptic plasticity, the regulation of synaptophysin and synaptotagmin expression by immobilization was analyzed by in situ hybridization. METHODS:Rats were exposed to immobilization stress, which induced typical behavioral alterations, such as reduced locomotor activity ...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/s0006-3223(01)01229-x
更新日期：2001-11-15 00:00:00
abstract：BACKGROUND:Neuropsychological studies in subjects with eating disorders (EDs) have reported conflicting findings, which might be accounted for by several confounding variables, including neuroendocrine changes. METHODS:General abilities, executive functions, attention, and noneffortful learning were assessed in 45 pat...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/s0006-3223(02)01668-2
更新日期：2003-05-15 00:00:00
abstract：BACKGROUND:Problems with the voluntary control of behavior, such as those leading to increased antisaccade errors, are accepted as evidence of prefrontal dysfunction in schizophrenia. We previously reported that speeded prosaccade responses, i.e., shorter response latencies for automatic shifts of attention to visual t...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/j.biopsych.2007.11.009
更新日期：2008-04-15 00:00:00
abstract：:Functional neuroimaging studies have identified multiple nodes of dysfunction in frontostriatal and mesocorticolimbic networks in attention-deficit/hyperactivity disorder (ADHD). Yet relatively few studies have examined how structural and functional connectivity between nodes in these networks might relate to the beha...
journal_title：Biological psychiatry
pub_type： 杂志文章,评审
doi：10.1016/j.biopsych.2011.03.022
更新日期：2011-06-15 00:00:00
abstract：BACKGROUND:In a single-center, placebo-controlled study, topiramate reduced binge eating and weight in patients with binge eating disorder (BED) and obesity. The current investigation evaluated the safety and efficacy of topiramate in a multicenter, placebo-controlled trial. METHODS:Eligible patients between 18 and 65...
journal_title：Biological psychiatry
pub_type： 杂志文章,多中心研究,随机对照试验
doi：10.1016/j.biopsych.2006.08.008
更新日期：2007-05-01 00:00:00
abstract：BACKGROUND:Despite widely replicated abnormalities of gamma-aminobutyric acid (GABA) neurons in schizophrenia postmortem, few studies have measured tissue GABA levels in vivo. We used proton magnetic resonance spectroscopy to measure tissue GABA levels in participants with schizophrenia and healthy control subjects in ...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/j.biopsych.2010.05.016
更新日期：2010-10-01 00:00:00
abstract：BACKGROUND:Growing evidence supports a pivotal role for the amygdala in the pathogenesis of bipolar disorder (BD) and schizophrenia (SZ). However, the occurrence of morphologic changes in the amygdala is currently controversial. METHODS:Total number and numeric density of neurons, neuronal somata size, and volume of t...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/j.biopsych.2007.04.023
更新日期：2007-10-15 00:00:00
abstract：:Federal regulations governing human subjects research call for additional protections for the "mentally disabled." However, there is currently no consensus definition of mental disability or guidelines for how these research subjects should be protected. This ambiguity complicates the work of institutional review boar...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/s0006-3223(99)00168-7
更新日期：1999-10-15 00:00:00
