Abstract：
:Heterogeneity is a major obstacle in the search for biological substrates in schizophrenia. The positive and negative distinction, even if too simplistic, may improve our understanding of underlying processes. Frontostriatal deficits have been related to negative symptoms, while dysfunction of the dominant temporal lobe appears more relevant to the generation of positive symptoms. Despite interactions between the subsystems, different neurophysiological profiles could be expected for patients predominantly affected at each of those levels. We performed discriminant analysis on 10 neurophysiological variables (hypothesis-related) in schizophrenic patients grouped by positive or negative symptoms (PANSS), obtaining a discriminant that correctly classified the sample. The function was then tested in a new sample of patients with schizophrenia, affective psychoses, and controls, classifying subjects with 78% sensitivity and 85% specificity. Our findings suggest that predominantly negative and positive schizophrenics have different neurophysiological profiles, which are consistent with the hypotheses of hypofrontality and temporal lobe dysfunction, respectively. A linear relation between discriminant scores and PANSS ratings might reflect coexisting pathologies or compensatory interactions in the mixed subgroup.
journal_name
Biol Psychiatryjournal_title
Biological psychiatryauthors
Gerez M,Tello Adoi
10.1016/0006-3223(94)00205-Hsubject
Has Abstractpub_date
1995-07-01 00:00:00pages
34-49issue
1eissn
0006-3223issn
1873-2402pii
0006-3223(94)00205-Hjournal_volume
38pub_type
杂志文章,评审abstract：:In a sample of 13 endogenous depressive inpatients, REM (rapid eye movement) latency (recorded over 4 consecutive nights after 2 habituation nights) and contingent negative variation amplitude showed significant relationship, suggesting that both parameters may depend on the same mechanisms, possibly cholinergic. ...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/0006-3223(85)90115-5
更新日期：1985-12-01 00:00:00
abstract：:Platelet MAO activity in schizophrenics was significantly decreased, by about 15%, after 3 weeks of treatment with haloperidol. Treatment with thioridazine or butaperazine also tended to decrease platelet MAO activity. The neuroleptic-induced decrease began to appear within a few days of treatment and did not show tol...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：
更新日期：1982-08-01 00:00:00
abstract：BACKGROUND:Obsessive-compulsive disorder (OCD) is a common and severe psychiatric illness that affects 1-3% of the population and presents a well-established co-morbidity with major depressive disorder (MDD). Twin and family studies have suggested a genetic component in the etiology of OCD, although the mode of inherit...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/s0006-3223(98)00319-9
更新日期：1999-05-01 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：:A sample of 100 consecutively admitted cases were recruited to test the hypothesis that an abnormal dexamethasone suppression test (AbDST) is associated with decreasing clinical severity during the course of hospitalization in various diagnostic categories. Serial DSTs and psychopathological ratings were done at the e...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/0006-3223(90)90528-a
更新日期：1990-03-15 00:00:00
abstract：:There are very few reports about asterixis as a side effect of treatment with psychopharmacologic agents. In this report we present four patients treated with a combination of different psychotropic drugs, in whom asterixis was triggered either by adding carbamazepine (CBZ) to a treatment regimen, or by increasing its...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/0006-3223(92)90040-7
更新日期：1992-08-15 00:00:00
abstract：BACKGROUND:Some cases of acute coronary syndrome (ACS) may be triggered by emotional states such as anger, but it is not known if acute depressed mood can act as a trigger. METHODS:295 men and women with a verified ACS were studied. Depressed mood in the two hours before ACS symptom onset was compared with the same pe...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/j.biopsych.2006.03.041
更新日期：2006-10-15 00:00:00
abstract：:Adrenocorticosteroids and serotonergic neurons exert reciprocal regulatory actions, and both are abnormal in depression. We evaluated whether glucocorticoids influence the serotonin transporter in rat platelets and brain by infusing dexamethasone for 26 days, sufficient for replacement of the entire platelet populatio...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/0006-3223(95)00469-6
更新日期：1996-10-01 00:00:00
abstract：BACKGROUND:A deficit in sustained attention might serve as an endophenotype for schizophrenia and therefore be a useful tool in understanding the genetic underpinnings of the disorder. We sought to detail functional brain abnormalities associated with sustained attention (i.e., vigilance) in individuals with genetic li...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/j.biopsych.2005.11.017
更新日期：2006-08-01 00:00:00
abstract：BACKGROUND:A growing body of preclinical research suggests that brain glutamate systems may be involved in the pathophysiology of major depression and the mechanism of action of antidepressants. This is the first placebo-controlled, double-blinded trial to assess the treatment effects of a single dose of an N-methyl-D-...
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(99)00230-9
更新日期：2000-02-15 00:00:00
abstract：BACKGROUND:GPR88 is an orphan G protein coupled receptor highly enriched in the striatum, and previous studies have focused on GPR88 function in striatal physiology. The receptor is also expressed in other brain areas, and here we examined whether GPR88 function extends beyond striatal-mediated responses. METHODS:We c...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/j.biopsych.2015.05.020
更新日期：2016-06-01 00:00:00
abstract：BACKGROUND:Twin studies show that age-related change in symptoms of attention-deficit/hyperactivity disorder (ADHD) is heritable. However, we do not know the heritability of the development of the neural substrates underlying the disorder. Here, we estimated the heritability of developmental change in white matter trac...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/j.biopsych.2020.06.007
更新日期：2020-06-13 00:00:00
abstract：:The preattentive automatic processing of 63 alcoholics and 27 controls was evaluated with an auditory inattentive event-related oddball paradigm. We examined the mismatch negativity and the N2-P3 complex. Results showed significantly greater amplitude for N2, P3 and the N2-P3 complex for controls but no individual lea...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/0006-3223(93)90097-w
更新日期：1993-04-15 00:00:00
abstract：:The involvement of the dopamine (DA) innervation of the medial prefrontal cortex (PFC) in attention was studied in a latent inhibition (LI) paradigm in rats. LI becomes evident by a retardation of conditioning to a stimulus after nonreinforced preexposure to that stimulus. LI is thought to reflect an animal's ability ...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/S0006-3223(95)00595-1
更新日期：1996-12-01 00:00:00
abstract：BACKGROUND:The study of Turner syndrome (TS) offers a unique window of opportunity for advancing scientific knowledge of how X chromosome gene imprinting, epigenetic factors, hormonal milieu, and chronologic age affect brain development in females. METHODS:We described brain growth trajectories in 55 girls with TS and...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/j.biopsych.2019.07.032
更新日期：2020-01-15 00:00:00
abstract：:Somatostatin is a tetradecapeptide that is assuming increasing importance as a regulator of central nervous system activity. Originally identified as the hypothalamic growth hormone release-inhibiting factor, somatostatin has subsequently been shown to be extensively and selectively distributed throughout the central ...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/0006-3223(86)90163-0
更新日期：1986-04-01 00:00:00
abstract：BACKGROUND:The cardiovascular safety of mixed amphetamine salts extended release (MAS XR) was evaluated in 2968 children 6-12 years of age with attention-deficit/hyperactivity disorder (ADHD). METHODS:In this prospective, open-label, noncomparative, community-based study, subjects whose symptoms of ADHD were well cont...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/j.biopsych.2006.05.002
更新日期：2007-03-01 00:00:00
abstract：BACKGROUND:Brainstem auditory evoked potentials (BAEP) reflect the activation of brainstem nuclei in the first milliseconds after presentation of an auditory stimulus. These electrophysiological correlates of neural processing are highly automatic and not influenced by cognitive factors or task demands; however, data f...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/j.biopsych.2005.09.009
更新日期：2006-04-01 00:00:00
abstract：BACKGROUND:Numerous studies have implicated neurogenesis in the hippocampus in animal models of depression, especially those related to controllability and learned helplessness. Here, we tested the hypothesis that uncontrollable but not controllable stress would reduce cell proliferation in the hippocampus of male and ...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/j.biopsych.2006.10.033
更新日期：2007-09-01 00:00:00
abstract：:Specific electroencephalogram (EEG) changes during clozapine therapy were prospectively studied in a cohort of 50 chronic state hospital patients with schizophrenia who were randomly assigned to one of three nonoverlapping clozapine serum level ranges (50-150 ng/mL, 200-300 ng/mL, and 350-450 ng/mL). EEGs were obtaine...
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)00298-3
更新日期：1997-07-15 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：BACKGROUND:Prior neurophysiological studies on patients with premenstrual syndrome (PMS) have revealed sleep electroencephalographic alterations in both cycle phases. We report on a study evaluating saccadic eye movements in PMS patients. METHODS:Saccadic eye movements were examined in 21 women with and 21 women witho...
journal_title：Biological psychiatry
pub_type： 临床试验,杂志文章
doi：10.1016/s0006-3223(98)00012-2
更新日期：1998-10-15 00:00:00
abstract：BACKGROUND:Mounting evidence suggests that overeating may be conceptualized within the same behavioral and neurobiological framework as drug addiction. One potentially important difference between overeating versus drug abuse refers to the sensory stimulation of oral receptors by palatable foods, a feature that may be ...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/j.biopsych.2013.02.028
更新日期：2013-05-01 00:00:00
abstract：BACKGROUND:Cognitive behavioral therapy (CBT) has efficacy for binge eating disorder (BED) but not obesity. No controlled studies have tested whether adding obesity medication to CBT facilitates weight loss. We performed a randomized, placebo-controlled study of orlistat administered with guided self-help CBT (CBTgsh)....
journal_title：Biological psychiatry
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1016/j.biopsych.2005.03.001
更新日期：2005-05-15 00:00:00
abstract：BACKGROUND:The cAMP signaling pathway, and its downstream neurotrophic factor BDNF, are major targets of antidepressant medications. Abnormalities in this pathway have previously been reported in postmortem brain of subjects with mood disorders. This study was designed to test whether the diagnosis of a mood disorder, ...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/s0006-3223(01)01083-6
更新日期：2001-08-15 00:00:00
abstract：:A decreased secretion of arginine vasopressin (AVP) has been implicated in depression. In order to further investigate this hypothesis, we studied the plasma level of the specific peptidergic carrier of AVP, vasopressin neurophysin (hNpI), in 26 depressed inpatients and 16 matched normal controls. On the other hand, A...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/0006-3223(90)90423-y
更新日期：1990-06-01 00:00:00
abstract：BACKGROUND:Binge eating is associated with obesity and has been conceptualized as "food addiction." However, this view has received only inconsistent support in humans, and limited evidence relates key neurocircuitry to the disorder. Moreover, relatively few studies have used pharmacologic functional magnetic resonance...
journal_title：Biological psychiatry
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.biopsych.2012.10.022
更新日期：2013-05-01 00:00:00
abstract：BACKGROUND:Neurobiologic abnormalities in the thalamus have been implicated in the pathophysiology of obsessive-compulsive disorder. We recently reported increased thalamic volume in treatment-naive pediatric obsessive-compulsive disorder patients versus case-matched healthy comparison subjects that decreased to levels...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/s0006-3223(00)00902-1
更新日期：2000-08-15 00:00:00
abstract：BACKGROUND:The neuropeptide oxytocin (OXT) mediates its actions, including anxiolysis, via its G protein-coupled OXT receptor. Within the paraventricular nucleus of the hypothalamus (PVN), OXT-induced anxiolysis is mediated, at least in part, via activation of the mitogen-activated protein kinase pathway following calc...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/j.biopsych.2019.01.010
更新日期：2019-05-15 00:00:00
abstract：:Several clinical investigations have suggested that captopril, an angiotensin-converting enzyme inhibitor (ACEI), currently used as an antihypertensive agent, exhibited anti-depressant properties in humans. The present experiment was evaluated for potential antidepressive activity of captopril on the learned helplessn...
journal_title：Biological psychiatry
pub_type： 杂志文章
doi：10.1016/0006-3223(90)90034-y
更新日期：1990-05-01 00:00:00
