Abstract:
:The role of dopamine (DA) receptors in the expression of opioid dependence was examined by use of an unbiased conditioned place preference paradigm. Male Sprague-Dawley rats were implanted s.c. with two pellets containing placebo or 75mg morphine. Animals received one conditioning session with saline and one with the DA D1 receptor antagonist SCH23390 (0.01-0.05mg, s.c.) or the DA D2 receptor antagonist raclopride (0.25-1.0mg/kg, s.c.). Conditioning sessions were conducted 4 days after pellet implantation. During each of these sessions, physical signs of withdrawal were quantified. In morphine-pelleted animals, the D2 receptor antagonist raclopride produced conditioned place aversions, with a minimum effective dose of 0.5mg/kg. Administration of a higher dose also resulted in wet-dog shakes, ptosis and diarrhea in morphine-pelleted animals. This effect was not observed in response to lower doses of raclopride or in placebo-pelleted animals. The D1 receptor antagonist SCH23390 failed to produce conditioned place aversions in either morphine- or placebo-pelleted animals after single-trial conditioning. This antagonist was also ineffective in producing physical withdrawal signs. After two conditioning sessions with SCH23390, both the morphine- and placebo-pelleted animals exhibited a marked aversion for the SCH23390-paired place. However, there was no difference between groups in the magnitude of this effect. These data demonstrate that the acute blockade of D2 receptors produces aversive effects in opioid-dependent animals and that this effect occurs in the presence of few, if any, prototypic physical withdrawal signs. Furthermore, the inability of a selective D1 receptor antagonist to produce conditioned aversive effects or physical signs of withdrawal suggests an important role of D2 as compared to D1 receptors in the expression of morphine withdrawal signs.
journal_name
Behav Pharmacoljournal_title
Behavioural pharmacologyauthors
Funada M,Shippenberg TSsubject
Has Abstractpub_date
1996-10-01 00:00:00pages
448-453issue
5eissn
0955-8810issn
1473-5849journal_volume
7pub_type
杂志文章abstract::Given the repeated failure of amyloid-based approaches in Alzheimer's disease, there is increasing interest in tau-based therapeutics. Although methylthioninium (MT) treatment was found to be beneficial in tau transgenic models, the brain concentrations required to inhibit tau aggregation in vivo are unknown. The comp...
journal_title:Behavioural pharmacology
pub_type: 杂志文章
doi:10.1097/FBP.0000000000000133
更新日期:2015-06-01 00:00:00
abstract::Drugs that increase monoamine neurotransmission are effective in both anxiety and depression. The therapeutic effects of monoamine-based antidepressant drugs may involve indirect effects on neurotransmission through α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid glutamate receptors (AMPAR). Thus, chronic antidep...
journal_title:Behavioural pharmacology
pub_type: 杂志文章
doi:10.1097/FBP.0000000000000243
更新日期:2016-09-01 00:00:00
abstract::Adult male Wistar rats were bilaterally implanted with indwelling cannulae in the CA1 region of the dorsal hippocampus. Once recovered from surgery, animals were submitted to one session of step-down inhibitory avoidance training (3.0 s, 0.4 mA footshock). Animals received a 0.5-microl infusion of saline, or of LY2940...
journal_title:Behavioural pharmacology
pub_type: 杂志文章
doi:10.1097/00008877-200112000-00007
更新日期:2001-12-01 00:00:00
abstract::Sex-dependent differences have been consistently described in cannabinoid addiction research. In particular, we recently reported that female Lister Hooded rats display greater self-administration of the cannabinoid CB1 receptor agonist WIN55,212-2 (WIN) and stronger reinstatement of cannabinoid-seeking behavior than ...
journal_title:Behavioural pharmacology
pub_type: 杂志文章
doi:10.1097/FBP.0000000000000395
更新日期:2018-09-01 00:00:00
abstract::Effects of the dopamine D(1) antagonist SCH 39166 were compared with those of the D(2) antagonist eticlopride in squirrel monkeys responding under a second-order fixed-interval schedule of i.v. self-administration of cocaine. Dose-response curves were determined for a range of doses of self-administered cocaine (0.01-...
journal_title:Behavioural pharmacology
pub_type: 杂志文章
doi:10.1097/00008877-199000140-00009
更新日期:1990-01-01 00:00:00
abstract::Flavonoids are natural substances obtained from plants. Most flavonoids cross the blood-brain barrier and exert a wide range of effects on the central nervous system. These actions have been attributed to the modulation of GABA-A receptors. Although motor systems in the central nervous system express a high density of...
journal_title:Behavioural pharmacology
pub_type: 杂志文章
doi:10.1097/FBP.0000000000000100
更新日期:2015-02-01 00:00:00
abstract::The purpose of the present experiment was to assess the degree of tolerance and cross-tolerance to the response rate-decreasing effects of opioids with different degrees of intrinsic efficacy at the mu receptor. The mu opioids included buprenorphine, etorphine, l-methadone, morphine, and sufentanil. Lever pressing of ...
journal_title:Behavioural pharmacology
pub_type: 杂志文章
doi:
更新日期:1995-12-01 00:00:00
abstract::'Active immobility' (AI) is an independent behaviour that can be characterized by behavioural immobility, an increased muscular rigidity and the sustaining of an unusual posture. In previous studies with cocaine we observed, concomitant with hyperlocomotion and increased rearing activity, an increase in AI in well-hab...
journal_title:Behavioural pharmacology
pub_type: 杂志文章
doi:10.1097/00008877-200411000-00004
更新日期:2004-11-01 00:00:00
abstract::Cannabis is the most popular illicit drug used by adolescents. Yet, there are only a few studies that have examined the effects of cannabis use on learning and memory during this sensitive and important neurodevelopmental stage. Male adolescent Sprague-Dawley rats were treated with Δ(9)-tetrahydrocannabinol (THC, 6 mg...
journal_title:Behavioural pharmacology
pub_type: 杂志文章
doi:10.1097/FBP.0b013e32834dbbb1
更新日期:2011-12-01 00:00:00
abstract::We investigated relationships between drinking, other drug use, and drug craving, using ecological momentary assessment (EMA), in a sample of polydrug users who were not heavy drinkers. In a prospective longitudinal cohort study, 114 heroin and cocaine users on methadone-maintenance treatment carried handheld electron...
journal_title:Behavioural pharmacology
pub_type: 杂志文章
doi:10.1097/FBP.0000000000000250
更新日期:2016-10-01 00:00:00
abstract::We studied the effects of cannabinoids on contextual conditioned fear responses. CB1 knockout and wild-type (CD1) mice were exposed to a brief session of electric shocks, and their behavior was studied in the same context 24 h later. In wild-type mice, shock exposure increased freezing and resting, and decreased locom...
journal_title:Behavioural pharmacology
pub_type: 杂志文章
doi:10.1097/00008877-200605000-00003
更新日期:2006-05-01 00:00:00
abstract::Twenty male Wistar rats were trained under an alternating-lever cyclic-ratio (ALCR) schedule of food reinforcement. When responding showed no trends, each subject was subcutaneously implanted with an Alzet osmotic mini-pump, connected to a chronic indwelling cannula extending into the lateral ventricle of the brain. T...
journal_title:Behavioural pharmacology
pub_type: 杂志文章
doi:10.1097/01.fbp.0000179278.03868.96
更新日期:2005-11-01 00:00:00
abstract::In light of the adverse side-effects of opioids, cannabinoid receptor agonists may provide an effective alternative for the treatment of cancer pain. This study examined the potency and efficacy of synthetic CB1 and CB2 receptor agonists in a murine model of tumor pain. Intraplantar injection of the CB1 receptor agoni...
journal_title:Behavioural pharmacology
pub_type: 杂志文章
doi:10.1097/FBP.0b013e3283474a6d
更新日期:2011-09-01 00:00:00
abstract::Rats were given fixed-time, 1-min food-pellet delivery sessions, for 3 h every day, which resulted in over drinking (schedule-induced polydipsia). In previous research, groups of animals came to prefer solutions of cocaine or lidocaine to concurrently presented water, if the drugs were first offered in a glucose/sacch...
journal_title:Behavioural pharmacology
pub_type: 杂志文章
doi:10.1097/00008877-199902000-00003
更新日期:1999-02-01 00:00:00
abstract::This study was designed to compare the reinforcing efficacy of PCP (phencyclidine:phenylcyclohexyl-piperidine) and the PCP-derivatives BTCP (N-[1-(2-benzo(b)thiophenyl) cyclohexyl]piperidine) and TCP (N-[1-(2-thienyl)cyclohexyl]-piperidine) to that of cocaine, using a progressive ratio schedule of reinforcement (PR). ...
journal_title:Behavioural pharmacology
pub_type: 杂志文章
doi:
更新日期:1995-04-01 00:00:00
abstract::Environmental and situational factors are important determinants of recreational drug use in humans. We aimed to develop a reliable animal model for studying the effects of environmental variables on drug-seeking behavior using the 'social isolation/social restriction' paradigm. Adult Wistar rats housed in short-term ...
journal_title:Behavioural pharmacology
pub_type: 杂志文章
doi:10.1097/FBP.0b013e32833470bd
更新日期:2010-02-01 00:00:00
abstract::Animal models of nicotine dependence are fundamental experimental tools for the understanding of the neurobiological and molecular processes underlying smoking behaviour. Substance use is controlled by four main processes: positive reinforcing effects, aversive effects, discriminative effects and stimulus-conditioned ...
journal_title:Behavioural pharmacology
pub_type: 杂志文章,评审
doi:10.1097/00008877-199911000-00005
更新日期:1999-11-01 00:00:00
abstract::We studied the anxiolytic-like activity of alnespirone and buspirone, two 5-HT(1A) receptor agonists, in a modified Geller-Seifter conflict model, and examined the role of 5-HT(1A) receptors by studying whether WAY-100635, a selective antagonist at these receptors, blocked their effects. Administered s.c. 30 minutes b...
journal_title:Behavioural pharmacology
pub_type: 杂志文章
doi:10.1097/00008877-200004000-00007
更新日期:2000-04-01 00:00:00
abstract::This study compared fixed-ratio (FR) and fixed-interval (FI) schedules to investigate the discriminative stimulus properties of μ-opioid and/or κ-opioid receptor agonists. Pigeons were trained to discriminate among morphine (μ agonist), U50488 (κ agonist), the combination, and saline under FR 20-s or FI-300-s schedule...
journal_title:Behavioural pharmacology
pub_type: 杂志文章
doi:10.1097/FBP.0b013e328349ab6c
更新日期:2011-09-01 00:00:00
abstract::Previous studies have indicated that dopamine D1 receptors in the ventral tegmental area (VTA) may play an important role in the development of sensitization to amphetamine. The present study was designed to determine if D1 receptors are also important in the development of cocaine-induced behavioral and neurochemical...
journal_title:Behavioural pharmacology
pub_type: 杂志文章
doi:
更新日期:1998-02-01 00:00:00
abstract::Although microdialysis is commonly understood as a method of sampling low molecular weight compounds in the extracellular compartment of tissues, this definition appears insufficient to specifically describe brain microdialysis of neurotransmitters. In fact, transmitter overflow from the brain into dialysates is criti...
journal_title:Behavioural pharmacology
pub_type: 杂志文章
doi:
更新日期:1996-11-01 00:00:00
abstract::Post-training administration of different doses of baclofen (a GABAB agonist) has been shown to impair memory retention, in a step-down passive avoidance test in mice. We have studied the effects of beta-adrenergic agonists and antagonists on baclofen-induced memory impairment in mice. Dobutamine (a beta 1-agonist) or...
journal_title:Behavioural pharmacology
pub_type: 杂志文章
doi:10.1097/01.fbp.0000137211.95623.07
更新日期:2004-07-01 00:00:00
abstract::Treatments for the positive and negative symptoms of schizophrenia have been explored for decades, but no completely successful therapy has been found as yet. Metabotropic glutamate receptor 5 (mGluR5), which potentiates N-methyl-D-aspartate receptors in brain regions implicated in schizophrenia, has become a novel dr...
journal_title:Behavioural pharmacology
pub_type: 杂志文章,评审
doi:10.1097/FBP.0000000000000352
更新日期:2018-02-01 00:00:00
abstract::Some reports suggest that older patients are less responsive to antidepressants than young adults, but this idea has not been fully supported. Here, we investigated the role of aging in the behavioral effects of the antidepressants, desipramine (DMI) (5, 10, and 20 mg/kg) and fluoxetine (FLX) (5, 10, and 20 mg/kg) in ...
journal_title:Behavioural pharmacology
pub_type: 杂志文章
doi:10.1097/FBP.0000000000000175
更新日期:2016-02-01 00:00:00
abstract::Male Syrian hamsters (Mesocricetus auratus) treated with anabolic/androgenic steroids (AAS) during adolescence (P27-P56) display highly escalated and mature forms of offensive aggression correlated with increased γ-aminobutyric acid (GABA) afferent development as well as decreased GABAA receptors in the lateroanterior...
journal_title:Behavioural pharmacology
pub_type: 杂志文章
doi:10.1097/FBP.0000000000000083
更新日期:2014-10-01 00:00:00
abstract::The aim of this study was twofold: (1) to study the predictive validity of the drug-naive, bilaterally MPTP-treated monkey as an animal model of Parkinson's disease (PD), and (2) to investigate the therapeutic and undesired effects of the D1 agonist SKF 82958 as compared to L-DOPA treatment, in drug-naive and L-DOPA p...
journal_title:Behavioural pharmacology
pub_type: 杂志文章
doi:10.1097/00008877-199903000-00006
更新日期:1999-03-01 00:00:00
abstract::The involvement of adrenoreceptor blocking drugs with the 5-HT(1A)-mediated discriminative stimulus was studied in pigeons trained to discriminate the 5-HT(1A) receptor agonist 8-OH-DPAT (0.3mg/kg) from saline. Cumulative dose-response curves were determined for 8-OH-DPAT, the beta-adrenergic antagonist pindolol, the ...
journal_title:Behavioural pharmacology
pub_type: 杂志文章
doi:
更新日期:1991-11-01 00:00:00
abstract::Rats in one group were trained to discriminate alprazolam (1.0mg/kg, i.p.) and in another group diazepam (3.0mg/kg, i.p.) from saline in a two-lever drug discrimination procedure. Food presentation occurred after 10 consecutive responses on the lever associated either with the training drug or with saline. Alprazolam,...
journal_title:Behavioural pharmacology
pub_type: 杂志文章
doi:
更新日期:1992-06-01 00:00:00
abstract::Animals neonatally depleted of dopamine show decreases in exploratory behaviour. As latent learning may depend on exploratory behaviour the present study was undertaken to examine the effects of neonatal dopamine depletion on latent learning. In two experiments dopamine was depleted neonatally, using 6-hydroxydopamine...
journal_title:Behavioural pharmacology
pub_type: 杂志文章
doi:
更新日期:1989-01-01 00:00:00
abstract::This series of studies provides a behavioural account of dopamine D1-receptor-dependent facilitation and disruption of memory for the single-trial passive avoidance task in the day-old chick. The D1 antagonist, SCH23390, induced memory disruption in a dose-dependent manner from 60 min after training with a strong (100...
journal_title:Behavioural pharmacology
pub_type: 杂志文章
doi:10.1097/00008877-200311000-00005
更新日期:2003-11-01 00:00:00