Abstract:
:In mice that were scored for the length of time they remained immobile in awkward postures (cataleptic) on an inclined wire grid, a large IP dose of pilocarpine (80 mg/kg) caused a clear catalepsy, which was prevented by both dopamine agonists that were tested, apomorphine (4 or 8 mg/kg, IP) and bromocriptine (8 mg/kg, IP). In other experiments, haloperidol (2.5 mg/kg) caused mild catalepsy. As expected, neither 4 nor 8 mg/kg apomorphine caused much effect when given alone, but both doses produced profound and long-lasting catalepsy in the haloperidol-treated animals. Bromocriptine also had little effect when given alone, and neither 4 nor 8 mg/kg enhanced the haloperidol catalepsy. Apomorphine alone produced catalepsy at low doses. Repeated testing after a low (0.3 mg/kg) dose of apomorphine showed that catalepsy was most profound at 5 min postinjection, with progressive decline thereafter. Apomorphine, but not bromocriptine, thus can produce catalepsy under certain conditions of DA receptor blockade or in low dose. Catalepsy, and perhaps other forms of hypomotility, appear to be differentially mediated by a subclass of dopaminergic receptors.
journal_name
Psychopharmacology (Berl)journal_title
Psychopharmacologyauthors
Klemm WRdoi
10.1007/BF00431769subject
Has Abstractpub_date
1985-01-01 00:00:00pages
12-5issue
1eissn
0033-3158issn
1432-2072journal_volume
87pub_type
杂志文章abstract:RATIONALE:Schizophrenia is a severe, persistent, and fairly common mental illness. Haloperidol is widely used and is effective against the symptoms of psychosis seen in schizophrenia. Chronic oral haloperidol administration decreased the number of astrocytes in the parietal cortex of macaque monkeys (Konopaske et al., ...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s00213-013-3136-3
更新日期:2013-11-01 00:00:00
abstract:RATIONALE:Despite the critical role attributed to phosphorylated extracellular signal regulated kinase (pERK1/2) in the nucleus accumbens (Acb) in the actions of addictive drugs, the effects of morphine on ERK1/2 phosphorylation in this area are still controversial. OBJECTIVES:In order to investigate further this issu...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s00213-016-4340-8
更新日期:2016-08-01 00:00:00
abstract::There is increasing interest in the potential functional role of the octapeptide angiotensin II (AII) in psychiatric and cognitive disorders. The novel angiotensin II (AII) receptor antagonists, losartan and PD123177, selective for the AT1 and AT2 receptor subtypes respectively, constitute important pharmacological to...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/BF02246450
更新日期:1996-08-01 00:00:00
abstract::Two groups of socially housed rhesus monkeys were raised under conditions differing in the degree of control or mastery over appetitive stimuli (food, water, and treats) in the 1st year of life. At age 18-24 months, a benzodiazepine receptor inverse agonist, beta-carboline-3-carboxylic acid ethyl ester (beta-CCE), was...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/BF02431537
更新日期:1988-01-01 00:00:00
abstract::Although previous studies have shown that pharmacological agents, such as buprenorphine, and alternative nondrug reinforcers, such as money or sweetened solutions, reduce cocaine self-administration, few studies have examined the combined effects of these two approaches. The purpose of the present study was to evaluat...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/BF02246018
更新日期:1996-06-01 00:00:00
abstract::In squirrel monkeys trained to discriminate between two tones, morphine consistently increased the percent of response failures during tone periods; however, it had no consistent effect on the percent correct responses. In contrast, scopolamine decreased percent correct responses as well as increasing percent response...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/BF00428404
更新日期:1985-01-01 00:00:00
abstract::Rats were presented with noise bursts alone or noise bursts 60 ms after presentation of either a 60 dB or an 80 dB prepulse after injection of the dopamine agonists apomorphine (3 mg/kg) or d-amphetamine (4 mg/kg), the glycine antagonist strychnine (1.5 mg/kg) or the alpha 2 antagonist yohimbine (5 mg/kg). Presentatio...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/BF00174500
更新日期:1988-01-01 00:00:00
abstract::Pigeons trained to discriminate between the presence and absence of delta 9-THC (0.56 mg/kg, IM, intramuscularly) were tested with diazepam (5.6-30 mg/kg), administered IG (intragastrically), and were found to generalize the response associated with the THC training to the diazepam treatment only to a limited extent. ...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/BF00174684
更新日期:1988-01-01 00:00:00
abstract:RATIONALE:A sensitized dopamine system may be linked to the genesis of psychotic symptoms in schizophrenia. Following withdrawal from amphetamine exposures, psychotic-like traits have been robustly demonstrated, but the presence of cognitive/mnemonic deficits remains uncertain. METHODS:Adult male Lewis and Fischer rat...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s00213-009-1514-7
更新日期:2009-11-01 00:00:00
abstract::The capacity of the specific narcotic antagonists naltrexone and naloxone to block the discriminative effects produced by morphine in the rat were evaluated using a two-choice, discrete-trial avoidance task. The antagonists produced a dose-dependent and time-dependent blockade of morphine's effects as measured by resp...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/BF00430479
更新日期:1976-11-10 00:00:00
abstract:RATIONALE:Although environmental enrichment renders rats more sensitive to the neurobehavioral effects of acute amphetamine, a previous study found that enriched rats self-administer less amphetamine than isolated rats at a low unit dose (0.03 mg/kg per infusion). In that study, however, acquisition of self-administrat...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s00213-002-1134-y
更新日期:2002-08-01 00:00:00
abstract:RATIONALE:Patients with obsessive compulsive disorder (OCD) demonstrate impaired cognition in some selected domains. Although serotoninergic dysfunction has been implicated in OCD, recent evidence suggests that dopamine may play a role as well. OBJECTIVE:The aim of the study was to evaluate learning and working memory...
journal_title:Psychopharmacology
pub_type: 杂志文章,随机对照试验
doi:10.1007/s00213-010-1963-z
更新日期:2010-10-01 00:00:00
abstract::A placebo-controlled study with six normal volunteers was carried out using 1 mg haloperidol IM. In some EEG frequency bands, the power density due to haloperidol appeared to increase or decrease depending on the subject. Nevertheless, if the results of the six subjects are taken together, the effects of haloperidol a...
journal_title:Psychopharmacology
pub_type: 临床试验,杂志文章
doi:10.1007/BF00431753
更新日期:1981-01-01 00:00:00
abstract::The effects of the benzomorphan antagonist Mr 2266 and the selective delta-antagonist ICI 154,129 on the body weight gain of 6-day-old suckling rat pups was observed. Mr 2266 significantly reduced body weight gain in these animals, though ICI 154,129 had no affect on this variable. These findings suggest that mu- and ...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/BF00432046
更新日期:1984-01-01 00:00:00
abstract::This study examined and compared withdrawal signs and symptoms from cessation of 0, 2 and 4 mg nicotine gum. In addition, a comparison was made between nicotine gum versus cigarette withdrawal symptoms. Smokers first underwent cigarette deprivation for 4 days and then were randomly assigned to 0 (N = 16), 2 (N = 25), ...
journal_title:Psychopharmacology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1007/BF02245656
更新日期:1991-01-01 00:00:00
abstract:RATIONALE:The touchscreen continuous trial-unique non-matching-to-location task (cTUNL) has been developed to optimise a battery of tasks under NEWMEDS (Novel Methods leading to New Medication in Depression and Schizophrenia, http://www.newmeds-europe.com ). It offers novel task features of both a practical and a theor...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s00213-015-4019-6
更新日期:2015-11-01 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::The binding kinetics of tritiated quinuclidinyl benzilate (QNB) were studied in membrane preparations from human parotid and rabbit submandibular glands. Inhibition of 3H-QNB was then used to compare the anticholinergic activity of lofepramine, desipramine, imipramine and amitriptyline for muscarinic receptor in the s...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/BF00172861
更新日期:1986-01-01 00:00:00
abstract::A prospective study of response to treatment with nortriptyline was carried out in a group of 14 inpatients with mixed symptoms of depression and dementia. Platelet membrane fluidity, as reflected by the fluorescence anisotropy of DPH labeled membranes, was determined for all 14 drug-free subjects prior to treatment b...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/BF00174688
更新日期:1988-01-01 00:00:00
abstract::Four macaques with lesions of dorsolateral frontal cortex and 4 normal monkeys were injected with 1 mg/kg d-amphetamine. Observations of social behaviors and motor activity were conducted over a 1-month period. The results of this experiment show a partial dissociation of effects of amphetamines on behavior of normal ...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/BF00428704
更新日期:1976-05-05 00:00:00
abstract::Adult female offspring of C57BL/6J mice injected daily with phenobarbital for the last third of pregnancy were more active than control offspring during a 3-min test period in an open field arena, thus confirming previous reports of lasting effects of prenatal exposure to phenobarbital. These offspring habituated less...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/BF00432745
更新日期:1981-01-01 00:00:00
abstract:RATIONALE:Prepulse inhibition (PPI) of the startle response in mice is increasingly used as a paradigm of sensory gating with potential predictive and construct validity towards schizophrenia. OBJECTIVES:Establishment of a mouse PPI paradigm in which typical and atypical antipsychotic drugs directly improve a low perf...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s002130100828
更新日期:2001-07-01 00:00:00
abstract::Previous studies have shown that dihydropyridine (DHP) calcium channel blockers can potentiate yawning induced by apomorphine in rats. The present study was undertaken to examine whether or not this interaction was seen with other compounds that induce yawning or if it represented a specific interaction with dopaminer...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/BF02244401
更新日期:1990-01-01 00:00:00
abstract::We have previously obtained evidence that the mesoamygdaloid dopamine projection modulates the acquisition of a conditioned response (CR) elicited by presentation of a conditioned stimulus (CS) predicting the availability of a natural (sucrose) reward. This property was found to be dependent upon D3, but not D1 or D2,...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s002130050771
更新日期:1998-12-01 00:00:00
abstract:RATIONALE:While reserpine-induced oral movements (OM), an animal model of tardive dyskinesia, are more persistent in old than in adult rats, old animals present spontaneous OM, which are phenomenologically similar to those presented by reserpine-treated adult rats. We postulate that these OM may be the result of oxidat...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s00213-002-1081-7
更新日期:2002-06-01 00:00:00
abstract:RATIONALE:Recent findings have shown a complexly regulated 5-HT system as it is linked to different kinds of aggression. OBJECTIVE:We focus on (1) phasic and tonic changes of 5-HT and (2) state and trait of aggression, and emphasize the different receptor subtypes, their role in specific brain regions, feed-back regul...
journal_title:Psychopharmacology
pub_type: 杂志文章,评审
doi:10.1007/s00213-010-2000-y
更新日期:2011-02-01 00:00:00
abstract::Male volunteer subjects smoked one marijuana cigarette containing 100, 200, or 250 micrograms/kg delta-9-tetrahydrocannabinol (THC) and were tested on three perceptual-motor performance measures related to driving. Performance was measured and blood samples were collected for 24 h after smoking. The covariation betwee...
journal_title:Psychopharmacology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1007/BF00427321
更新日期:1985-01-01 00:00:00
abstract:RATIONALE AND OBJECTIVE:Depression symptoms are now recognized to be the predominant cause of disability for bipolar disorder (BD) patients. The treatment strategies for the depressed phase of BD remain more anecdotal than data-based. Olanzapine has been investigated as an alternative to antidepressants and a mood stab...
journal_title:Psychopharmacology
pub_type: 杂志文章,随机对照试验
doi:10.1007/s00213-014-3453-1
更新日期:2014-07-01 00:00:00
abstract::Rats were trained in a Y-maze on a two-choice simultaneous black-white discrimination with either black or white as S+. Animals were then transferred to one of three discrimination tasks. In task 1 (New S-), a new stimulus, either vertical or horizontal stripes, was substituted for the original S-. In task 2 (New S+),...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/BF00179945
更新日期:1987-01-01 00:00:00
abstract:RATIONALE:Understanding factors contributing to individual differences in vulnerability to opioid addiction is essential for developing more effective preventions and treatments, yet few reliable behavioral predictors of subsequent opioid self-administration have been identified in rodents. Sensitivity to the acute eff...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/s00213-020-05532-w
更新日期:2020-08-01 00:00:00