Abstract:
:Dose-dependent effects of intravenously administered lorazepam on haemodynamic fluctuations were studied by means of spectral analysis, in order to elucidate sympathetic and parasympathetic components in cardiovascular control during situations of rest and mental stress after benzodiazepine administration. In a double-blind randomized cross-over study, nine male volunteers participated in two sessions: a placebo and lorazepam session. During these sessions, the subjects repeatedly performed a 10-min version of the Stroop Color Word Test (CWT), with 10 min of rest between the CWTs. Lorazepam was administered before each rest period in increasing doses of 0.0, 0.06, 0.13, 0.25 and 0.5 mg (total cumulative dose: 0.94 mg). During the placebo session the subjects received five placebo injections. For five of the nine subjects the lorazepam session was their first session. Heat rate (HR), blood pressure (BP) and respiration were recorded continuously. Power spectra were calculated per 2.5-min periods for HR, systolic (SBP) and diastolic BP (DBP). Spectral density was assessed for three frequency bands: low (LFB: 0.02-0.06 Hz), mid (MFB: 0.07-0.14 Hz) and high (HFB: 0.15-0.40 Hz). During the consecutive periods of rest, lorazepam induced a dose-dependent decrease in HR, and a dose-dependent increase in LFB, MFB and HFB power of HR, but lorazepam had no effect on BP. The effects were significant after 0.44 mg lorazepam for HR and HFB power, and after 0.94 mg lorazepam for the HR fluctuations in the LFB and MFB. Lorazepam did not influence the cardiovascular responses to the CWT.(ABSTRACT TRUNCATED AT 250 WORDS)
journal_name
Psychopharmacology (Berl)journal_title
Psychopharmacologyauthors
Tulen JH,Mulder G,Pepplinkhuizen L,Man in 't Veld AJ,van Steenis HG,Moleman Pdoi
10.1007/BF02245447subject
Has Abstractpub_date
1994-02-01 00:00:00pages
81-9issue
1eissn
0033-3158issn
1432-2072journal_volume
114pub_type
临床试验,杂志文章,随机对照试验abstract:RATIONALE AND OBJECTIVE:Because of the important role of dopamine in neurotransmission, it would be useful to be able to image brain dopamine receptor-mediated signal transduction in animals and humans. Administering the D1-D2 receptor agonist apomorphine may allow us to do this, as the D2-like receptor is reported to ...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s00213-008-1073-3
更新日期:2008-05-01 00:00:00
abstract:RATIONALE:Stress experience during adolescence has been linked to the development of psychiatric disorders in adulthood, many of which are associated with impairments in prefrontal cortex function. OBJECTIVE:The current study was designed to determine the immediate and enduring effects of repeated social stress on a p...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s00213-014-3654-7
更新日期:2015-01-01 00:00:00
abstract::The inferior colliculus is involved in conveying auditory information of an aversive nature to higher cortical structures. Gradual increases in the electrical stimulation of this structure produce progressive aversive responses from vigilance, through freezing, until escape. Recently, we have shown that microinjection...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s002130050900
更新日期:1999-03-01 00:00:00
abstract:RATIONALE:Gabolysat PC60 is a fish protein hydrolysate with anxiolytic properties commonly used as a nutritional supplement. OBJECTIVE:The diazepam-like effects of PC60 on stress responsiveness of the rat pituitary-adrenal system and on sympathoadrenal activity were studied. METHODS:The activity of the pituitary-adre...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s002139900338
更新日期:2000-03-01 00:00:00
abstract:RATIONALE:Reelin, a large extracellular matrix glycoprotein, is down-regulated in the brain of schizophrenic patients and of heterozygous reeler mice (rl/+). The behavioral phenotype of rl/- mice, however, matches only partially the schizophrenia hallmarks. OBJECTIVES:We recently reported (Marrone et al., Eur J Neuros...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s00213-009-1483-x
更新日期:2009-06-01 00:00:00
abstract:RATIONALE:Abnormalities of cortical evoked potentials and background electroencephalographic (EEG) frequencies occur in several psychiatric disorders, some of which, especially depression, are associated with hypercortisolaemia. However, there have been few investigations of the effects of exogenously administered cort...
journal_title:Psychopharmacology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1007/s002130000528
更新日期:2000-09-01 00:00:00
abstract:INTRODUCTION:Alterations in protein kinase (PKA) protein levels have been implicated in the regulation of responses to and development of cocaine addiction. However, the contribution of differences in PKA intracellular cascade to the known sex differences in responses to cocaine is not well understood. This study exami...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s00213-008-1411-5
更新日期:2009-04-01 00:00:00
abstract::The fatty acid specificity of the depressant actions associated with prostaglandin (PG) administration was studied in mice. Administration of PG-E2 (0.4 and 1.0 mg/kg) or PG-D2 (0.4 and 4 mg/kg) significantly potentiated pentobarbital sleeping time. Arachidonic acid (3.3 mg/kg) administration also significantly potent...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/BF00555225
更新日期:1984-01-01 00:00:00
abstract:RATIONALE:Pre-clinical and clinical studies have suggested that the antidepressant efficacy of escitalopram (ESC) can be augmented by co-administration of aripiprazole (ARI). OBJECTIVE:To establish if the effects of ESC + ARI can be altered by modulating the 5-HT1a receptor. METHODS:Sprague-Dawley male rats received ...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s00213-019-05225-z
更新日期:2019-07-01 00:00:00
abstract:RATIONALE:Numerous substituted cathinone drugs have appeared in recreational use. This variety is often a response to legal actions; the scheduling of 3,4-methylenedioxypyrovalerone (MDPV; "bath salts") in the USA was followed by the appearance of the closely related drug α-pyrrolidinopentiophenone (alpha-PVP; "flakka"...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s00213-015-3944-8
更新日期:2015-08-01 00:00:00
abstract:RATIONALE:One third of US smokers are intermittent smokers (ITS) who do not smoke daily. Unlike daily smokers (DS), whose smoking is negatively reinforced by withdrawal relief, ITS may be motivated by immediate positive reinforcement. In contrast, incentive salience theory posits hypothesis that "liking" of drug effect...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s00213-017-4682-x
更新日期:2017-10-01 00:00:00
abstract::In two experiments, phenobarbitone sodium (30 mg/kg) reliably enhanced water consumption and extended the duration of drinking in 24h water-deprived male rats. The opiate receptor antagonists naloxone (0.1-10 mg/kg) and naltrexone (0.1-10 mg/kg) both decreased water intake and reduced the duration of drinking. When th...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/BF00433011
更新日期:1983-01-01 00:00:00
abstract::The mood-altering properties of amphetamine (AMPH) in humans (euphoria and depression) have been postulated to be related to the increases and decreases respectively which this drug produces in the sensitivity of the reward system of the brain. The present study further evaluated this relationship by testing the effec...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/BF00433801
更新日期:1980-01-01 00:00:00
abstract::Dopaminergic involvement in the regulation of operant behavior was examined by monitoring responding after administration of different dopaminergic agonists. A chain schedule of reinforcement was used to classify the effects of these agonists in long-tailed macaques (Macaca fascicularis). The schedule included the fol...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/BF00429014
更新日期:1983-01-01 00:00:00
abstract:RATIONALE:Serotonin and especially serotonin 2A (5-HT(2A)) receptor signaling are important in the etiology and treatment of schizophrenia and affective disorders. We previously reported a novel 5-HT(2A) receptor effector, increased transglutaminase (TGase)-catalyzed transamidation, and activation of the small G protei...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s00213-010-1984-7
更新日期:2011-02-01 00:00:00
abstract:RATIONALE:Electrophysiological studies have identified a scalp potential, the late positive potential (LPP), which is modulated by the emotional intensity of observed stimuli. Previous work has shown that the LPP reflects the modulation of activity in extrastriate visual cortical structures, but little is known about t...
journal_title:Psychopharmacology
pub_type: 杂志文章,随机对照试验
doi:10.1007/s00213-011-2426-x
更新日期:2012-02-01 00:00:00
abstract::It was shown previously that behavioural effects of apomorphine (locomotor activation and stereotyped behaviour) can be conditioned when they are associated with well-defined environmental stimuli. In the present study, the hypothesis was tested that glutamatergic mechanisms play an important role either in formation ...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/BF02244064
更新日期:1990-01-01 00:00:00
abstract:RATIONALE:Batteries of tests that are thought to measure different aspects of anxiety-related behaviour are used to characterise mice after genetic or pharmacological manipulation. However, because of the potentially confounding effects of repeated testing and natural intra-individual variations in behaviour over time,...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s00213-010-1873-0
更新日期:2010-07-01 00:00:00
abstract::Pigeons were trained to peck each of two response keys. Periods during which pecks on one key (the food key) produced access to grain according to a random-ratio 80 schedule alternated irregularly with periods during which food-key responses had no scheduled consequences (extinction). Both keys remained amber unless a...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/BF00422418
更新日期:1981-01-01 00:00:00
abstract:RATIONALE:Arcaine is a competitive antagonist of the polyamine binding site at the N-methyl-D-aspartic acid receptor which induces state-dependent recall. However, no study has addressed the involvement of other neurotransmitter/neuromodulators in arcaine-induced state dependency. OBJECTIVES:The current study investig...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s00213-011-2215-6
更新日期:2011-06-01 00:00:00
abstract::Sixteen healthy volunteers were administered midazolam followed by placebo or the benzodiazepine antagonist, flumazenil, in a double-blind, cross-over study. Flumazenil reversed midazolam-induced sedation on the subjective, psychophysiological and motor indices used. In contrast, there was little evidence of any rever...
journal_title:Psychopharmacology
pub_type: 临床试验,杂志文章
doi:10.1007/BF02244252
更新日期:1991-01-01 00:00:00
abstract::Spontaneous and amphetamine-elicited locomotor activity in rats is reduced by most clinically effective antipsychotic drugs. We have recently demonstrated that intracerebroventricular infusion of kainic acid (KA), which produces cell loss in the hippocampus and other limbic-cortical brain regions, increases spontaneou...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s002130050509
更新日期:1998-02-01 00:00:00
abstract::The topography of stereotyped behaviour produced by apomorphine in rats was studied by using either a scoring system, based on observation in a wire cage, or by quantification of horizontal and vertical activities, and of the total distances run in an open field, using an automatic recording system. The latter design ...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/BF00172869
更新日期:1986-01-01 00:00:00
abstract:RATIONALE:Longitudinal, population-based studies can better assess the relationship of ecstasy use with depression. OBJECTIVES:We examined whether change in ecstasy use was associated with change in depressive symptoms/probable depression over a 4-year period, among a large Australian sample. METHODS:The Personality ...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s00213-013-3132-7
更新日期:2013-10-01 00:00:00
abstract:RATIONALE:Several studies have demonstrated that males with a family history of alcoholism (FHP) show less of a response to alcohol (e.g. lower ratings of intoxication) than males without a family history of alcoholism (FHN). The purpose of this pilot study was to determine if FHP females also showed a reduced sensitiv...
journal_title:Psychopharmacology
pub_type: 临床试验,杂志文章
doi:10.1007/s00213-003-1474-2
更新日期:2003-08-01 00:00:00
abstract::The aim of this study was to evaluate the effect on the activity of the hypothalamic-pituitary dopaminergic system of two new atypical antipsychotic drugs: the ergoline derivative SDZ HDC-912, which is a dopamine (DA) D2 receptor partial agonist; and the quinolinone derivative OPC-4392, which acts as an agonist at pre...
journal_title:Psychopharmacology
pub_type: 临床试验,杂志文章
doi:10.1007/BF02246969
更新日期:1993-01-01 00:00:00
abstract::Using a 15-s intershock interval, an increase in shock-induced fighting was observed following intraventricular 96 microgram 5,7-dihydroxytryptamine (5,7-DHT) and 90 microgram 6-hydroxydopa (6-OHdopa). The incidence of predatory mouse killing was enhanced by 5,7-DHT, but was not affected by 6-OHdopa. Pain sensitivity ...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/BF00432684
更新日期:1981-01-01 00:00:00
abstract:RATIONALE:Prepulse inhibition (PPI) represents a normal sensorimotor gating response that is typically impaired in schizophrenic patients. It is known that cannabinoid CB1 agonists reduce sensorimotor gating in rats, suggesting that the CB1 receptor and the cannabinoid system are involved in sensorimotor gating. OBJEC...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s00213-004-1851-5
更新日期:2004-09-01 00:00:00
abstract:BACKGROUND:The general premise that receptor theory provides a useful framework for understanding the behavioral effects of psychoactive drugs has been a central tenet of behavioral pharmacology. OBJECTIVES:The purpose of this review is to reiterate this basic theme and, in particular, the proposition that current con...
journal_title:Psychopharmacology
pub_type: 杂志文章,评审
doi:10.1007/s002130000567
更新日期:2000-12-01 00:00:00
abstract:RATIONALE:Pindolol has been reported to shorten the onset of antidepressant action of selective serotonin (5-hydroxytryptamine; 5-HT) reuptake inhibitors (SSRIs) as well as to increase their efficacy. It has been postulated that pindolol enhances the antidepressant effect of SSRIs by blocking somatodendritic 5-HT1A aut...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s002130000470
更新日期:2000-07-01 00:00:00