Abstract：
BACKGROUND:Evidence indicates involvement of the endocannabinoid (eCB) system in both the pathophysiology of schizophrenia and working memory (WM) function. Additionally, schizophrenia patients exhibit relatively strong WM deficits. These findings suggest the possibility that the eCB system is also involved in WM deficits in schizophrenia. In the present study, we examined if perturbation of the eCB system can induce abnormal WM activity in healthy subjects. METHODS:A pharmacological functional magnetic resonance imaging study was conducted with a placebo-controlled, cross-over design, investigating effects of the eCB agonist Δ9-tetrahydrocannabinol on WM function in 17 healthy volunteers, by means of a parametric Sternberg item-recognition paradigm with five difficulty levels. RESULTS:Performance accuracy was significantly reduced after Δ9-tetrahydrocannabinol. In the placebo condition, brain activity increased linearly with rising WM load. Δ9-Tetrahydrocannabinol administration enhanced activity for low WM loads and reduced the linear relationship between WM load and activity in the WM system as a whole and in left dorsolateral prefrontal cortex, inferior temporal gyrus, inferior parietal gyrus, and cerebellum in particular. CONCLUSIONS:Δ9-Tetrahydrocannabinol enhanced WM activity network-wide for low loads, while reducing the load-dependent response for increasing WM loads. These results indicate that a challenged eCB system can induce both abnormal WM activity and WM performance deficits and provide an argument for the possibility of eCB involvement in WM deficits in schizophrenia.
journal_name
Biol Psychiatryjournal_title
Biological psychiatryauthors
Bossong MG,Jansma JM,van Hell HH,Jager G,Oudman E,Saliasi E,Kahn RS,Ramsey NFdoi
10.1016/j.biopsych.2012.01.008subject
Has Abstractpub_date
2012-04-15 00:00:00pages
693-9issue
8eissn
0006-3223issn
1873-2402pii
S0006-3223(12)00046-7journal_volume
71pub_type
杂志文章,随机对照试验abstract：:In four series of studies on schizophrenic patients and normals we found that all the schizophrenics eliminated N, N-dimethyltryptamines in their urine while none of the normals did so. Similarly, with early infantile autism (Studies I and II) and normal controls, this separation between patiens and normals still held...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：
更新日期：1975-08-01 00:00:00
abstract：BACKGROUND:As many as 30% of individuals diagnosed with depression are nonresponsive to traditional antidepressant medication. Augmentation and combination strategies have emerged in an attempt to address this issue. Atypical antipsychotics (e.g., olanzapine), when added to a selective serotonin reuptake inhibitor (e.g...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/j.biopsych.2004.02.012
更新日期：2004-06-01 00:00:00
abstract：BACKGROUND:The study assessed the efficacy and tolerability of the selective serotonin reuptake inhibitor (SSRI) fluvoxamine in the treatment of pathologic gambling (PG). METHODS:A 16-week randomized double-blind crossover design insured that each subject received 8 weeks of fluvoxamine and 8 weeks of a placebo. Fifte...
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(00)00241-9
更新日期：2000-05-01 00:00:00
abstract：BACKGROUND:There is a need for improved treatments for ethanol withdrawal in humans. Previously, ethanol withdrawal has been shown to enhance the acoustic startle response in rats. Because many ethanol withdrawal symptoms are caused by autonomic hyperactivity, we examined the effects of two antihypertensives, the imida...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/s0006-3223(00)00229-8
更新日期：2000-05-15 00:00:00
abstract：:This review describes the strategy of using elementary phenotypes for neurobiological and genetic linkage studies of schizophrenia. The review concentrates on practical aspects of selecting the phenotype and then understanding the confounds in its measurement and interpretation. Examples from the authors' studies of d...
journal_title：Biological psychiatry
pub_type： 杂志文章,评审
doi：10.1016/s0006-3223(99)00085-2
更新日期：1999-07-01 00:00:00
abstract：BACKGROUND:There is evidence that vascular factors contribute substantially to Alzheimer's disease (AD). We have developed assays to reliably detect the circulation and microcirculation regulating factors C-terminal endothelin-1 precursor fragment (CT-proET-1), midregional pro-adrenomedullin (MR-proADM), and midregiona...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/j.biopsych.2009.01.032
更新日期：2009-06-01 00:00:00
abstract：BACKGROUND:The goal of this study was to identify chromosomal regions likely to contain susceptibility loci for obsessive-compulsive disorder (OCD). METHODS:We conducted a genome-wide linkage scan, with average marker spacing less than 10 centimorgans (cM), in 121 subjects from 26 families ascertained through probands...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/j.biopsych.2007.01.008
更新日期：2007-10-15 00:00:00
abstract：BACKGROUND:Bipolar disorder is associated with functional and structural abnormalities in the brain circuits involved in processing emotional stimuli. Although impairments of cognitive function have been found to persist in bipolar patients during periods of euthymic mood, it is not known whether abnormalities in emoti...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/s0006-3223(01)01249-5
更新日期：2002-02-15 00:00:00
abstract：BACKGROUND:The involvement of serotonin in depression and suicide has been proposed, because major depression is successfully treated by medications that specifically block the serotonin transporter, and there is evidence for a decrease in serotonin transporters in major depression and suicide. The midbrain dorsal raph...
journal_title：Biological psychiatry
pub_type： 临床试验,杂志文章
doi：10.1016/s0006-3223(99)00313-3
更新日期：2000-06-15 00:00:00
abstract：BACKGROUND:Few studies have examined the involvement of the central dopaminergic system in the pathophysiology of mood disorders. The study of prolactin (PRL) secretion may be an informative indirect method for the assessment of the dopaminergic system in children with major depressive disorder (MDD). METHODS:Plasma P...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/s0006-3223(99)00005-0
更新日期：1999-08-15 00:00:00
abstract：BACKGROUND:It is widely considered that exposure to maternal cigarette smoking in pregnancy has risk effects on offspring attention-deficit/hyperactivity disorder (ADHD). This view is supported by consistent observations of association. It is, however, impossible to be certain of adequate control for confounding factor...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/j.biopsych.2009.05.032
更新日期：2009-10-15 00:00:00
abstract：:Previous studies indicate differences between schizophrenics and normals in thickness and overall size of the corpus callosum, particularly in female subjects. The present study compares the area of the corpus callosum as measured by magnetic resonance imaging (MRI) in men and women experiencing first-episode cases of...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/0006-3223(94)91237-8
更新日期：1994-06-15 00:00:00
abstract：:Several studies have reported prolonged neural transmission times on auditory brainstem responses (ABRs) measured in autistic children, a finding which implicates CNS dysfunction at the level of the brainstem in autistic conditions. This study measured ABRs in 25 children and adults with pervasive developmental disord...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：
更新日期：1984-10-01 00:00:00
abstract：BACKGROUND:Anterior cingulate cortex has been implicated in the pathogenesis of major depressive disorder (MDD). With single voxel proton magnetic resonance spectroscopy, we reported reductions in anterior cingulate glutamatergic concentrations (grouped value of glutamate and glutamine) in 14 pediatric MDD patients ver...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/j.biopsych.2005.05.007
更新日期：2005-11-01 00:00:00
abstract：BACKGROUND:Binge eating and other forms of disordered eating behavior (DEB) are associated with failed inhibitory control. This study investigated the neural correlates of failed inhibitory control as a potential biomarker for DEB. METHODS:The study used prospective longitudinal data from the European IMAGEN study ado...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/j.biopsych.2019.01.027
更新日期：2019-06-01 00:00:00
abstract：:The prevalence and role of sleep disorders in the sexual problems of diabetic patients remain unexplored. This study was conducted on 40 diabetic men carefully screened to exclude the confounding effects of other medical illnesses or drugs likely to impair sexual function and 40 age-matched healthy volunteers. They un...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/0006-3223(93)90388-t
更新日期：1993-08-01 00:00:00
abstract：BACKGROUND:The microtubule-associated protein tau accumulates in neurodegenerative diseases known as tauopathies, the most common being Alzheimer's disease. One way to treat these disorders may be to reduce abnormal tau levels through chaperone manipulation, thus subverting synaptic plasticity defects caused by tau's t...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/j.biopsych.2013.02.027
更新日期：2013-09-01 00:00:00
abstract：BACKGROUND:High rates of comorbidity, shared risk, and overlapping therapeutic mechanisms have led psychopathology research toward transdiagnostic dimensional investigations of clustered symptoms. One influential framework accounts for these transdiagnostic phenomena through a single general factor, sometimes referred ...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/j.biopsych.2018.03.012
更新日期：2018-09-15 00:00:00
abstract：:We compared the EEG-monitored sleep of 8 women with anorexia nervosa and 16 normal weight women with bulimia to that of 14 normal women. The patients with anorexia nervosa spent less time asleep and spent less of their sleep time in Stage 1. The sleep of the normal weight patients with bulimia was remarkably similar t...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/0006-3223(85)90191-x
更新日期：1985-09-01 00:00:00
abstract：BACKGROUND:MicroRNAs (miRNAs) are potent regulators of gene expression with proposed roles in brain development and function. We hypothesized that miRNA expression profiles are altered in individuals with severe psychiatric disorders. METHODS:With real-time quantitative polymerase chain reaction, we compared the expre...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/j.biopsych.2010.09.039
更新日期：2011-01-15 00:00:00
abstract：BACKGROUND:Chronic alcohol use is associated with higher than expected rates of panic disorder. METHODS:To study the relationship between alcoholism and panic disorder, we administered the panicogenic agent, sodium lactate, to 26 alcoholics with either panic disorder or frequent panic attacks (ALCPAN), 20 nonalcoholic...
journal_title：Biological psychiatry
pub_type： 临床试验,杂志文章
doi：10.1016/s0006-3223(97)00008-5
更新日期：1997-12-01 00:00:00
abstract：:The pharmacokinetics of dexamethasone (DEX) were studied in 9 drug-free melancholically depressed patients and 10 healthy control subjects matched by sex and age. Each subject received 1 mg of DEX administered orally and by the (i.v.) route at 11:00 PM and serial blood samples were collected over the next 17 hours unt...
journal_title：Biological psychiatry
pub_type： 临床试验,杂志文章
doi：10.1016/s0006-3223(96)00094-7
更新日期：1997-03-01 00:00:00
abstract：BACKGROUND:Suvorexant is an orexin receptor antagonist for treatment of insomnia. We report results from two pivotal phase 3 trials. METHODS:Two randomized, double-blind, placebo-controlled, parallel-group, 3-month trials in nonelderly (18-64 years) and elderly (≥65 years) patients with insomnia. Suvorexant doses of 4...
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.2014.10.003
更新日期：2016-01-15 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:Our previous studies indicated that N-methyl-D-aspartate receptor (NMDAR) deletion from a subset of corticolimbic interneurons in the mouse brain during early postnatal development is sufficient to trigger several behavioral and pathophysiological features resembling the symptoms of human schizophrenia. Inte...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/j.biopsych.2012.12.004
更新日期：2013-05-15 00:00:00
abstract：:Attention-deficit/hyperactivity disorder (ADHD) is a multifactorial and clinically heterogeneous disorder that is associated with tremendous financial burden, stress to families, and adverse academic and vocational outcomes. Attention-deficit/hyperactivity disorder is highly prevalent in children worldwide, and the pr...
journal_title：Biological psychiatry
pub_type： 杂志文章,评审
doi：10.1016/j.biopsych.2004.10.020
更新日期：2005-06-01 00:00:00
abstract：:Probenecid is used to block the transport of acid monoamine metabolites from cerebrospinal fluid (CSF), on the assumption that the resultant rise in CSF concentrations of the metabolites will reflect presynaptic "turnover" of the parent monoamine. However, CSF levels of probenecid correlate with CSF levels of the meta...
journal_title：Biological psychiatry
pub_type： 杂志文章,评审
doi：
更新日期：1983-11-01 00:00:00
abstract：BACKGROUND:Recent evidence indicates that individuals who are homozygous for the short (s) allele in the promoter region of the serotonin transporter gene have higher rates of depression and other psychiatric disorders as a function of exposure to increasing levels of stressful life events than do individuals who have ...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/j.biopsych.2007.10.008
更新日期：2008-05-01 00:00:00
abstract：BACKGROUND:Currently, no pharmacological treatments for bipolar depression exist that exert rapid (within hours) antidepressant or antisuicidal effects. We previously reported that intravenous administration of the N-methyl-D-aspartate antagonist ketamine produced rapid antidepressant effects in patients with treatment...
journal_title：Biological psychiatry
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.biopsych.2011.12.010
更新日期：2012-06-01 00:00:00
abstract：BACKGROUND:Recent genome-wide association studies have identified genetic loci that jointly make a considerable contribution to risk of developing Alzheimer's disease (AD). Because neuropathological features of AD can be present several decades before disease onset, we investigated whether effects of polygenic risk are...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/j.biopsych.2016.02.033
更新日期：2017-01-15 00:00:00
