Abstract:
:We report here that local hippocampal WIN-55,212-2 implants release this cannabinoid agonist for extended periods, the release is restricted to the implanted brain region and is behaviorally active. Radiolabeled WIN-55,212-2 was implanted bilaterally into the CA3 region of the dorsal hippocampus by means of fused silica capillaries. Significant amounts of the compound were released from the implants for at least 10 days. No labeled WIN-55,212-2 was detected in other brain regions, for example, the cortex, amygdala, thalamus, hypothalamus, and pons. In a separate experiment, radiolabeled WIN-55,212-2 was implanted chronically into the same hippocampal region, and rats were assessed 8 days later in the object-recognition test. In contrast to controls, rats implanted with WIN-55,212-2 were unable to differentiate familiar and unfamiliar objects. Object recognition was reinstated by the cannabinoid antagonist SR141716A, as rats implanted with both WIN-55,212-2 and SR141716A did not differ from controls. Thus, chronic hippocampal WIN-55,212-2 implants impaired recognition memory via the CB1 receptor. The memory-impairing effects of acute cannabinoid treatments are well known, but the effects of chronic treatments are controversial. The rate and magnitude of tolerance, however, have been shown to be brain-area specific and cell-type specific. Here we show that chronic hippocampal treatments impair memory, suggesting that no tolerance develops in the hippocampus towards the memory-impairing effects of cannabinoids. The data also suggest that chronic, brain-area-specific effects of cannabinoids can be studied by the novel method described here.
journal_name
Behav Pharmacoljournal_title
Behavioural pharmacologyauthors
Barna I,Soproni K,Arszovszki A,Csabai K,Haller Jdoi
10.1097/FBP.0b013e3282d9e9f9subject
Has Abstractpub_date
2007-09-01 00:00:00pages
515-20issue
5-6eissn
0955-8810issn
1473-5849pii
00008877-200709000-00019journal_volume
18pub_type
杂志文章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::Parkinson's disease (PD) affects ∼1-2% of the elderly population. Development of a neuroprotective therapy that may be initiated early in the course of the disease to retard/prevent disease progression is highly desirable. This study aimed to investigate prophylactic treatment with coenzyme Q10 (CoQ10) before paraquat...
journal_title:Behavioural pharmacology
pub_type: 杂志文章
doi:10.1097/FBP.0000000000000342
更新日期:2018-02-01 00:00:00
abstract::A previous study from this laboratory reported an antiaversive effect of the beta-adrenoceptor blocker propranolol microinjected into the dorsal periaqueductal grey (DPAG) of the rat, that was antagonized by the 5-HT(2) receptor blocker ritanserin. The present results show that microinjection into the DPAG of isamolta...
journal_title:Behavioural pharmacology
pub_type: 杂志文章
doi:10.1097/00008877-199102000-00010
更新日期:1991-02-01 00:00:00
abstract::Cocaine addicts very often use different combinations of cocaine and other drugs of abuse such as gamma-hydroxybutyric acid. The objective of the present work was to evaluate the impact of gamma-hydroxybutyric acid administration on the rewarding actions of cocaine, using the conditioned place preference procedure. Co...
journal_title:Behavioural pharmacology
pub_type: 杂志文章
doi:10.1097/01.fbp.0000190685.84984.ec
更新日期:2006-03-01 00:00:00
abstract::Acetaldehyde has been suggested to mediate a number of the pharmacological and behavioural effects of ethanol. Recently, several studies investigated the role of acetaldehyde in the subjective effects of ethanol, but obtained conflicting results. With the discriminative taste aversion (DTA) procedure, high acetaldehyd...
journal_title:Behavioural pharmacology
pub_type: 杂志文章
doi:10.1097/01.fbp.0000082130.08343.47
更新日期:2003-07-01 00:00:00
abstract::Rats were placed in a circular swimming pool for two 3-min swims separated by 3 days. In the first swim control rats swam initially around the perimeter of the pool and later spent more time in the central region and swam more slowly. The time spent in the centre during min 1 was much higher in the second swim than in...
journal_title:Behavioural pharmacology
pub_type: 杂志文章
doi:
更新日期:1991-04-01 00:00:00
abstract::Relatively little is known about the role of the inhibitory neurotransmitter gamma-aminobutyric acid (GABA) in extinction of appetitively motivated tasks. The benzodiazepine (BZ) chlordiazepoxide (CDP) was administered during extinction and re-acquisition of lever pressing by mice following food reinforced discrete-tr...
journal_title:Behavioural pharmacology
pub_type: 杂志文章
doi:
更新日期:2004-05-01 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
abstract::The impact of training dose on the characteristics of a discrimination maintained by a mixture of two dissimilar drugs has been investigated in order to refine this approach to the study of drug interactions. Three groups of rats (n = 10) were trained to discriminate mixtures of (+)-amphetamine (0.2-0.8mg/kg) plus pen...
journal_title:Behavioural pharmacology
pub_type: 杂志文章
doi:10.1097/00008877-199608000-00008
更新日期:1996-08-01 00:00:00
abstract::Pair-housed, water-deprived rats were trained to run in a two-way shuttle box, using water reinforcement. Animals were tested either singly or in pairs; in the paired condition, the animals were required to shuttle in close physical proximity. Paired performance, but not single performance was severely disrupted by si...
journal_title:Behavioural pharmacology
pub_type: 杂志文章
doi:10.1097/00008877-198900110-00010
更新日期:1989-01-01 00:00:00
abstract::Rats were trained on a three-panel runway task prior to injections of N-methyl-D-aspartate (NMDA; 40nmoles/µl/side) into the dorsal hippocampus. One week after the treatment, animals did not show any change in the number of errors on the first runway trial (reference memory), with one correct white and two incorrect b...
journal_title:Behavioural pharmacology
pub_type: 杂志文章
doi:
更新日期:1992-08-01 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::Glutamate, an excitatory neurotransmitter in the brain, produces excitotoxicity through its agonistic action on postsynaptic N-methyl-D-aspartate receptor, resulting in neurodegeneration. We hypothesized that the administration of low doses of glutamate in cerebral ischemia could attenuate the excitotoxicity in neuron...
journal_title:Behavioural pharmacology
pub_type: 杂志文章
doi:10.1097/FBP.0000000000000256
更新日期:2016-10-01 00:00:00
abstract::With the ever-growing geriatric population, research on brain diseases such as dementia is more imperative now than ever. The most prevalent of all dementias is Alzheimer's disease, a progressive neurodegenerative disease that presents with deficits in memory, cognition, motor skills, and a general decline in the qual...
journal_title:Behavioural pharmacology
pub_type: 杂志文章,评审
doi:10.1097/FBP.0000000000000284
更新日期:2017-04-01 00:00:00
abstract::Clinical reports and animal experiments indicate that both cocaine administration and cocaine withdrawal increase anxiety. We investigated the ability of a number of putative anxiolytic agents to alleviate these anxiety states using the elevated plus-maze. Rats in the cocaine condition received either saline or cocain...
journal_title:Behavioural pharmacology
pub_type: 杂志文章
doi:10.1097/00008877-200211000-00001
更新日期:2002-11-01 00:00:00
abstract::In this experiment we examined the effect of a serotonin receptor (5-HT1A) agonist and antagonist WAY-100635 (N-[2-(4-[2-methoxy-phenyl]-1-piperazinyl)ethyl]-N-2-pyridinylcyclohexane-carboxamide) on temporal differentiation, in intact rats and rats whose serotonergic (5-HTergic) pathways had been destroyed by 5,7-dihy...
journal_title:Behavioural pharmacology
pub_type: 杂志文章
doi:10.1097/00008877-200212000-00001
更新日期:2002-12-01 00:00:00
abstract::Few studies have investigated the effects of chronic cannabinoid exposure on memory performance and whether tolerance occurs to cannabinoid-induced memory impairment. Here, we studied the effects of repeated exposure to Delta-tetrahydrocannabinol (THC: 1 mg/kg) on spatial memory and zif268 expression in mice. One grou...
journal_title:Behavioural pharmacology
pub_type: 杂志文章
doi:10.1097/FBP.0b013e3283242f6a
更新日期:2009-02-01 00:00:00
abstract::In a double-blind crossover design on 36 male smokers, differences in hormone responses to a serotonergic (citalopram) and dopaminergic (bromocriptine) challenge were tested, to compare transmitter responsivities in addicted and pleasure-motivated smokers with respective controls. A general score of smoking addiction,...
journal_title:Behavioural pharmacology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1097/00008877-200209000-00017
更新日期:2002-09-01 00:00:00
abstract::Phencyclidine (PCP) can induce a model psychosis in humans that mimics the positive and negative symptoms of schizophrenia. The purpose of the present study was to determine whether PCP can induce similar behavioural effects in rats and whether these effects can be alleviated by neuroleptic drug treatment. Rats were t...
journal_title:Behavioural pharmacology
pub_type: 杂志文章
doi:
更新日期:1996-01-01 00:00:00
abstract::Effects of environmental modulation of methamphetamine (MA)-induced behavior on the establishment and mode of expression of behavioral sensitization were examined. Rats received daily injection of MA for 10 days (1mg/kg, s.c.). Half of them were immediately returned to the home cage (home cage group) and the other hal...
journal_title:Behavioural pharmacology
pub_type: 杂志文章
doi:
更新日期:1995-03-01 00:00:00
abstract::Parkinson's disease (PD) is a neurodegenerative disorder classically associated with motor symptoms, but several nonmotor disturbances appear decades before the clinical diagnosis of the disease. A variety of hypotheses exist to explain the onset of PD, and neuroinflammation is one of the most investigated processes. ...
journal_title:Behavioural pharmacology
pub_type: 杂志文章,评审
doi:10.1097/FBP.0000000000000512
更新日期:2019-12-01 00:00:00
abstract::The purpose of this experiment was to examine the substitution patterns produced by opioids with activity at the mu receptor in pigeons trained to discriminate the delta opioid BW373U86 from saline. A low dose of naltrindole (0.1 mg/kg) produced at least a 16-fold rightward shift in the dose-effect curve for the stimu...
journal_title:Behavioural pharmacology
pub_type: 杂志文章
doi:
更新日期:1998-07-01 00:00:00
abstract::Ketamine is the prototype of a new generation of antidepressant drugs, which is reported in clinical studies to be effective in treatment-resistant patients, with an effect that appears within hours and lasts for a few days. Chronic mild stress (CMS) is a well-established and widely used animal model of depression, in...
journal_title:Behavioural pharmacology
pub_type: 杂志文章
doi:10.1097/FBP.0000000000000259
更新日期:2017-02-01 00:00:00
abstract::Acute (10mg/kg, i.p.) and chronic (10mg/kg/day, i.p. for 10 days) diazepam treatments decreased hippocampal dialysate 5-HT (but not 5-HIAA) concentrations in freely moving rats, suggesting decreased availability of 5-HT to receptors. Twenty-four hours after the last chronic diazepam injection, hippocampal dialysate 5-...
journal_title:Behavioural pharmacology
pub_type: 杂志文章
doi:
更新日期:1996-03-01 00:00:00
abstract::The fentanyl derivative mirfentanil has a novel set of behavioral effects in non-humans including low-efficacy opioid actions and non-opioid antinociceptive actions. This study evaluated the rate-decreasing effects of mirfentanil, morphine, naltrexone and ketamine in pigeons both prior to and during a period of chroni...
journal_title:Behavioural pharmacology
pub_type: 杂志文章
doi:10.1097/00008877-199909000-00012
更新日期:1999-09-01 00:00:00
abstract::Evidence of observational learning (social learning) is present in many species. One such task is the one-trial taste-avoidance task, in which Actor chicks peck a bead coated with an aversant substance. Observer chicks learn to avoid beads that are similar in appearance to the one presented to the Actors. It has been ...
journal_title:Behavioural pharmacology
pub_type: 杂志文章
doi:10.1097/FBP.0000000000000130
更新日期:2015-06-01 00:00:00
abstract::Dopamine receptors are implicated in the reinforcing effects of food and drug reinforcement. The purpose of this study was to evaluate whether blocking D2 dopamine receptors during extinction (secondary reinforcement) would affect reacquisition of responding for food pellets (primary reinforcement). Food-restricted ra...
journal_title:Behavioural pharmacology
pub_type: 杂志文章
doi:10.1097/FBP.0000000000000002
更新日期:2013-12-01 00:00:00
abstract::There is a considerable degree of individual vulnerability for alcohol use disorder (AUD) as only a subpopulation of individuals who regularly consume alcohol develop AUD. It is therefore very important to understand the factors and mechanisms that contribute towards the individual risk for AUD. In this respect, socia...
journal_title:Behavioural pharmacology
pub_type: 杂志文章
doi:10.1097/FBP.0000000000000165
更新日期:2015-10-01 00:00:00
abstract::Although the role of genetic factors in the response to drugs of abuse has been emphasized, no earlier studies have applied selective breeding to intravenous drug self-administration. Here we report the effects of six generations of selective breeding for rat lines with low or high levels of intravenous drug self-admi...
journal_title:Behavioural pharmacology
pub_type: 杂志文章
doi:10.1097/FBP.0b013e32831c3aec
更新日期:2008-12-01 00:00:00
abstract::Different approaches to measuring stimulus generalization in drug discrimination experiments are compared. The main issue, with implications for interpreting partial generalization, has been whether it is preferable to use graded or quantal indices. The first step is to determine whether discriminative drug effects ar...
journal_title:Behavioural pharmacology
pub_type: 杂志文章
doi:
更新日期:1991-11-01 00:00:00