Abstract：
:The concentration of kynurenine, a neuroactive tryptophan metabolite, in blood plasma after pharmacologically induced anxiety was studied. Anxiety was provoked in 15 healthy volunteers by an anxiogenic dose of caffeine. Kynurenine concentration was markedly increased at the peak of anxiety and returned to normal after anxiety had abated. Possible causes responsible for this effect are discussed. There is a correlation between kynurenine concentration in blood plasma and indices of state and trait anxiety (Spielberger-Khanin scale) and anxiety (Hamilton scale) at baseline. The correlation disappears at the peak of anxiety. It is suggested that kynurenine is involved in caffeine-induced anxiety in humans. The absence of correlation at the peak of caffeine-induced anxiety is discussed.
journal_name
Biol Psychiatryjournal_title
Biological psychiatryauthors
Orlikov A,Ryzov Idoi
10.1016/0006-3223(91)90225-bsubject
Has Abstractpub_date
1991-02-15 00:00:00pages
391-6issue
4eissn
0006-3223issn
1873-2402pii
0006-3223(91)90225-Bjournal_volume
29pub_type
杂志文章abstract：BACKGROUND:Several lines of evidence support the possibility that disturbances of dopamine (DA) function could contribute to alterations of weight, feeding, motor activity, and reward in anorexia nervosa (AN). METHODS:To assess possibly trait-related disturbances but avoid confounding effects of malnutrition, 10 women...
journal_title：Biological psychiatry
pub_type： 临床试验,杂志文章
doi：10.1016/j.biopsych.2005.05.003
更新日期：2005-12-01 00:00:00
abstract：BACKGROUND:Stimulation of alpha(2)-adrenergic receptors (alpha(2)-ARs) in the prefrontal cortex (PFC) has a beneficial effect on working memory and attentional regulation in monkeys. alpha(2)-adrenergic agonists like clonidine and guanfacine have been used experimentally and clinically for the treatment of attention de...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/j.biopsych.2004.11.004
更新日期：2005-01-15 00:00:00
abstract：:Autonomic characteristics of nonclinical panic and blood phobia were compared using spectral analysis of the electrocardiogram (EKG), as well as more conventional cardiovascular measures. The cardiovascular responses of 11 subjects who reported recent occurrence of frequent severe panic attacks, and 10 subjects who re...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/0006-3223(93)90087-t
更新日期：1993-09-01 00:00:00
abstract：BACKGROUND:A large number of studies suggest the presence of deficits in dorsolateral prefrontal cortex function during performance of working memory tasks in individuals with schizophrenia. However, working memory deficits may also present in other psychiatric disorders, such as major depression. It is not clear wheth...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/s0006-3223(02)01674-8
更新日期：2003-03-01 00:00:00
abstract：:The categorical approach to defining schizophrenia spectrum disorders requires meeting established criteria. To advance early identification and intervention in young people, the field has progressed to studying help-seeking individuals who are at clinical high risk based on subthreshold psychosis spectrum symptoms, a...
journal_title：Biological psychiatry
pub_type： 杂志文章,评审
doi：10.1016/j.biopsych.2020.02.002
更新日期：2020-08-15 00:00:00
abstract：:Traumatic events are common, but posttraumatic stress disorder (PTSD) is relatively rare. These facts have prompted several questions: What variables increase risk for PTSD among trauma-exposed people? Can we distinguish between pathologic and nonpathologic responses to traumatic stressors? If so, what psychobiologica...
journal_title：Biological psychiatry
pub_type： 杂志文章,评审
doi：10.1016/s0006-3223(02)01663-3
更新日期：2003-05-01 00:00:00
abstract：:Over the past 30 years, investigators have used nonlinear and so-called chaos theory-based techniques to examine a wide range of phenomena ranging from electroencephalogram and cardiac rate and rhythm analyses to stock market and weather predictions. Psychiatric neuroscientists are now beginning to apply nonlinear met...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/s0006-3223(02)01701-8
更新日期：2003-01-01 00:00:00
abstract：:Cerebrospinal fluid beta-endorphin-like immunoreactivity (CSF BLI) was determined for 69 patients who met DSM-III criteria for delirium and for 8 controls. The CSF BLI was significantly lower in the delirious patient group than in the controls (12.5 +/- 3.0 pg/ml versus 15.0 +/- 3.4 pg/ml, p less than 0.05). CSF BLI h...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/0006-3223(89)90273-4
更新日期：1989-04-01 00:00:00
abstract：BACKGROUND:Social phobia has been characterized as a disorder of exaggerated fear of social threat and heightened sensitivity to imagery of social failure. METHODS:To assess the physiological basis of this description, social phobia patients (n=75) and demographically matched control participants (n=75) imagined neutr...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/j.biopsych.2008.09.023
更新日期：2009-03-01 00:00:00
abstract：:The development of models of the pathogenesis of neuropsychiatric diseases that build on recent advances in chemical neuroanatomy will help to guide future research. The interconnections among limbic, basal ganglia, and cortical structures are used to form the basis of a hypothesis of the pathogenesis of schizophrenia...
journal_title：Biological psychiatry
pub_type： 杂志文章,评审
doi：10.1016/0006-3223(91)90295-w
更新日期：1991-08-15 00:00:00
abstract：:Sleep and 24-hr body core temperature were measured during a 2- to 3-week study interval in 15 endogenous depressives, 12 patients after remission, and 10 normal control subjects. The total sample was subdivided into one group of persons who displayed at least one sleep onset REM episode (SOREM; latency less than or e...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：
更新日期：1983-12-01 00:00:00
abstract：BACKGROUND:K-complexes (KCs) are evoked delta frequency electroencephalogram (EEG) responses during sleep that occur when large numbers of healthy cortical cells burst fire in a synchronized manner. The KC amplitude and incidence are sensitive measures of normal healthy brain aging. Given the known neurodegenerative co...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/j.biopsych.2008.10.010
更新日期：2009-07-15 00:00:00
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：:Serum free thyroxine (FT4), total thyroxine (TT4), and Brief Psychiatric Rating Scale (BPRS) measurements were obtained following hospital admission and at 2-week intervals during hospitalization in 80 male psychiatric inpatients with a variety of major psychotic and affective disorders. A strong correlation between t...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/0006-3223(89)90148-0
更新日期：1989-01-01 00:00:00
abstract：BACKGROUND:Major depressive disorder is associated with disturbed circadian rhythms. To investigate the causal relationship between mood disorders and circadian clock disruption, previous studies in animal models have employed light/dark manipulations, global mutations of clock genes, or brain area lesions. However, li...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/j.biopsych.2016.03.1050
更新日期：2016-12-01 00:00:00
abstract：BACKGROUND:Unipolar major depressive disorder (MDD) is characterized by anomalous neurobiological responses to pleasant stimuli, a pattern that may be linked to symptoms of anhedonia. However, the potential for psychotherapy to normalize neurobiological responses to pleasant stimuli has not been evaluated. METHODS:Twe...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/j.biopsych.2009.06.021
更新日期：2009-11-01 00:00:00
abstract：BACKGROUND:Chronic social defeat stress (CSDS) produces persistent behavioral adaptations in mice. In many behavioral assays, it can be difficult to determine if these adaptations reflect core signs of depression. We designed studies to characterize the effects of CSDS on sensitivity to reward because anhedonia (reduce...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/j.biopsych.2013.12.014
更新日期：2014-10-01 00:00:00
abstract：BACKGROUND:Working memory impairments are commonly found in attention-deficit/hyperactivity disorder (ADHD) and often improve with psychostimulant treatment. Little is known about how these medications affect the function of frontoparietal brain regions engaged for working memory. This study used functional magnetic re...
journal_title：Biological psychiatry
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.biopsych.2011.11.011
更新日期：2012-03-01 00:00:00
abstract：BACKGROUND:Previous studies indicate that adverse childhood events are associated with persistent changes in corticotropin-releasing factor neuronal systems. Our aim was to determine whether altered glucocorticoid feedback mediates the neuroendocrine sequelae of childhood trauma. METHODS:Standard and low-dose dexameth...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/s0006-3223(03)00692-9
更新日期：2004-01-01 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
abstract：:In an investigation of biological indicators of stress in normal humans, undergraduate psychology students were differentiated on trait anxiety and assessed under baseline, preexam (stress), and postexam conditions. Assessment at each condition involved drawing 20 ml of blood, followed by self-reporting for selected q...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/0006-3223(85)90209-4
更新日期：1985-08-01 00:00:00
abstract：BACKGROUND:Eye movement desensitization and reprocessing (EMDR) is an effective treatment for posttraumatic stress disorder. During EMDR, patients make horizontal eye movements (EMs) while simultaneously recalling a traumatic memory, which renders the memory less vivid and emotional when it is later recalled again. Rec...
journal_title：Biological psychiatry
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.biopsych.2017.03.012
更新日期：2017-10-15 00:00:00
abstract：:The effects of changes in pCO2 in the development and resolution of normal (return to base line within 2 sec after S2) and abnormal (return to base line in more than 2 sec after S2) CNVs were studied. Decreased pCO2 produced by hyperventilation induced a significant reduction in the duration of the post-imperative neg...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：
更新日期：1976-10-01 00:00:00
abstract：:Fifteen subjects dependent on both opioids and cocaine completed an ascending and tapering schedule of buprenorphine dosing, with maintenance for 21 days at each dose of buprenorphine (4, 8, 12, 16 mg sublingual daily) during both ascending and tapering phases. Higher doses of buprenorphine led to greater reductions i...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/0006-3223(93)90258-f
更新日期：1993-07-01 00:00:00
abstract：:Twenty-eight residual schizophrenics hospitalized in a chronic institution with a 9 to 30 year history of disease, with predominantly negative symptoms were given carbamazepine. Carbamazepine was administered in a double-blind trial and therapeutic effects were measured by the Scale for the Assessment of Negative Symp...
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(94)91162-2
更新日期：1994-01-01 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：:Serum samples from 307 patients with various chronic mental disorders were examined for the presence of several autoantibodies. Autoantibodies detected included antinuclear antibodies (ANA) in 122/307 (39.7%), rheumatoid factor (RF) in 23/307 (7.5%), anticardiolipin antibodies (anti-CL) in 23/304 (7.6%, IgM in 12 pati...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/0006-3223(90)90590-x
更新日期：1990-04-01 00:00:00
abstract：:Twenty-eight psychiatric patients with computerized tomography (CT) findings of ventricular abnormality most likely to result from prenatal/perinatal lesions (VA group) were compared to 28 sex- and age-matched psychiatric patients with normal neuroradiological findings (NCT group). The neuroradiological rater was blin...
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(95)00623-0
更新日期：1996-12-15 00:00:00
abstract：BACKGROUND:Major depressive disorder is associated with dysregulated basal cortisol levels and small hippocampal (HC) volume. However, it is still debated whether these phenomena are a consequence of the illness or whether they may represent a vulnerability marker existing before the illness onset. Here, we aimed to ex...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/j.biopsych.2010.07.025
更新日期：2010-11-01 00:00:00
abstract：BACKGROUND:Elevated endogenous levels of corticosteroids cause neural dysfunction and loss, especially within the hippocampus, as well as cognitive impairment in hippocampus-mediated tasks. Because Cushing's syndrome patients suffer from hypercortisolism, they represent a unique opportunity to study the impact of eleva...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/j.biopsych.2004.09.003
更新日期：2004-12-01 00:00:00
