Browse Items · NEOMED Bibliography Database

Calcium channel blockade attenuates angiotensin II-induced drinking in rats.

Lateral ventricular administration of angiotensin II (ANG II) produces potent dipsogenic effects in water-sated rats. ANG II seems to require functional voltage-gated calcium channels on neurons throughout circumventricular brain sites to exert its…

Tags: 1993, Amino Acid Sequence, Angiotensin II/*antagonists & inhibitors/pharmacology, Animals, Brain research bulletin, Calcagnetti D J, Calcium Channel Blockers/administration & dosage/*pharmacology, Dimethyl Sulfoxide/pharmacology, Dose-Response Relationship, Drinking Behavior/*drug effects, Drug, Injections, Intraventricular, Isradipine/pharmacology, Male, Molecular Sequence Data, Rats, Schechter M D, Sprague-Dawley

Extinction of cocaine-induced place approach in rats: a validation of the "biased" conditioning procedure.

It has often been demonstrated that when a rat is conditioned in a cue-specific environment that has been repeatedly paired with cocaine injections, it will spend more time in that environment than it does in a saline-paired environment. This…

Tags: 1993, Animals, Brain research bulletin, Calcagnetti D J, Classical, Cocaine/*pharmacology, Conditioning, Extinction, Habituation, Inbred Strains, Male, Operant/*drug effects, Psychological/*drug effects, Psychophysiologic/drug effects, Rats, Reward, Schechter M D

Deficits in shock-induced freezing and naltrexone enhancement of freezing in fawn hooded rats.

When a rat is returned to a context associated with mild electric foot shock (1 mA/0.75 s), the environmental cues elicit a species-specific defensive behavior termed freezing. Genetically divergent strains of rats given identical shock conditioning…

Tags: *Fear, 1994, Animals, Brain research bulletin, Calcagnetti D J, Classical/*drug effects, Conditioning, Electroshock, Female, Inbred Strains, Naltrexone/*pharmacology, Rats, Schechter M D

HAD and LAD rats respond differently to stimulating effect but not discriminative effects of ethanol.

The drug discrimination paradigm (DD) was used to evaluate behavioral differences of rats selectively bred for differential ethanol drinking preferences. Seventh-generation high alcohol-drinking (HAD) and low alcohol-drinking (LAD) rats were trained…

Tags: *Discrimination Learning, 1992, Alcohol (Fayetteville, N.Y.), Alcohol Drinking/*physiopathology, Animals, Ethanol/administration & dosage/*pharmacology, Krimmer E C, Male, Rats, Schechter M D

Ethanol-produced interoceptive stimuli are time dependent in selectively bred HAS and LAS rats.

Fourteenth generation high alcohol-sensitive (HAS) and low alcohol-sensitive (LAS) rats were trained to discriminate the effects of 600 mg/kg intraperitoneally administered ethanol from its vehicle at 6 and 30 min postadministration. Each of the…

Tags: *Discrimination Learning, 1992, Alcohol (Fayetteville, N.Y.), Animals, Dose-Response Relationship, Drug, Drug Tolerance, Ethanol/administration & dosage/*pharmacology, Male, Rats, Schechter M D, Time Factors

Locomotor activity but not conditioned place preference is differentially affected by a moderate dose of ethanol administered to P and NP rats.

The conditioned place preference (CPP) test and spontaneous motor activity were used in order to determine if ethanol-preferring (P) rats differ from ethanol nonpreferring (NP) rats after the administration of a moderate (1.0 g/kg) dose of ethanol.…

Tags: *Alcohol Drinking, *Environment, 1992, Alcohol (Fayetteville, N.Y.), Animals, Dose-Response Relationship, Drug, Ethanol/*pharmacology, Male, Motor Activity/*drug effects, Mutant Strains, Rats, Reinforcement (Psychology), Schechter M D

The NMDA receptor antagonist MK-801 produces ethanol-like discrimination in the rat.

Two groups of rats, one derived from N/Nih stock and the second from the (putatively) serotonin-compromised Fawn-Hooded line, were trained to discriminate ethanol from its vehicle in a drug discrimination paradigm. Once each of the two groups…

Tags: 1993, Alcohol (Fayetteville, N.Y.), Animals, Department of Anatomy & Neurobiology, Discrimination Learning/*drug effects, Dizocilpine Maleate/*pharmacology, Ethanol/*pharmacology, Gordon T L, McBurney D M, Meehan S M, N-Methyl-D-Aspartate/physiology, NEOMED College of Medicine, Rats, Receptors, Schechter M D

Ethanol discrimination in Fawn-Hooded rats is compromised when compared to other strains.

The drug discrimination paradigm was used to evaluate the behavioral differences in response to ethanol between three strains of rats, viz., Sprague-Dawley, N/Nih and Fawn-Hooded. This latter group is thought to have a genetically-transmitted…

Tags: *Discrimination Learning, 1993, Alcohol (Fayetteville, N.Y.), Animals, Dose-Response Relationship, Drug, Ethanol/*pharmacology, Male, Meehan S M, Rats, Schechter M D, Serotonin/physiology, Species Specificity, Sprague-Dawley

Cocaethylene-induced lethality in mice is potentiated by alcohol.

Mice of the heterogeneously bred HS line were concurrently administered intraperitoneal injections of either 95, 75, 60, or 48 mg/kg cocaethylene or 48, 38, or 30 mg/kg cocaethylene in conjunction with the non-lethal dose of 6.0 g/kg (20% w/v)…

Tags: 1995, Alcohol (Fayetteville, N.Y.), Animals, Cocaine/*analogs & derivatives/poisoning, Dose-Response Relationship, Drug, Drug Synergism, Ethanol/*pharmacology, Female, Inbred Strains, Lethal Dose 50, Male, Meehan S M, Mice, Schechter M D

MDMA (Ecstasy) substitutes for the ethanol discriminative cue in HAD but not LAD rats.

Selectively bred high- and low-alcohol-drinking (HAD/LAD) rats were trained to discriminate the interoceptive stimuli produced by IP-administered 600 mg/kg ethanol (10% w/v in a two-lever, food-motivated operant task. Once criterion discrimination…

Discrimination of cocaethylene in rats trained to discriminate between its components.

Two groups of eight male Normalized/National Institutes of Health (N/Nih) rats were used in a food-motivated, 2-lever drug discrimination task with one group being trained to discriminate between 10 mg/kg cocaine vs. 1 g/kg ethanol, whereas the…

Tags: 1997, Animals, Cocaine/*analogs & derivatives/*pharmacology, Discrimination Learning/*drug effects, Dose-Response Relationship, Drug, Ethanol/*pharmacology, European journal of pharmacology, Male, Rats, Schechter M D

Olanzapine attenuates the reinforcing effects of cocaine.

The possibility that the atypical neuroleptic olanzapine can antagonize the ability of cocaine to produce both conditioned place preference and self-administration in rats was investigated. Pre-treatment with olanzapine (3.0, 4.5 mg/kg, but not 1.5…

Candyflipping': synergistic discriminative effect of LSD and MDMA.

The co-administration of D-lysergic acid diethylamide (LSD; 'Acid') and 3,4-methylenedioxymethamphetamine (MDMA; 'Ecstasy'; 'XTC'), has reached a prevalence that has allowed for the street terminology 'candyflipping' to describe the combination.…

Tags: 1998, 4-methylenedioxyamphetamine/administration & dosage/*pharmacology, Animal/*drug effects, Animals, Behavior, Discrimination Learning/*drug effects, Drug Synergism, European journal of pharmacology, Hallucinogens/administration & dosage/*pharmacology, Lysergic Acid Diethylamide/administration & dosage/*pharmacology, Male, N-Methyl-3, Rats, Schechter M D, Serotonin Agents/administration & dosage/*pharmacology

Discrete versus cumulative dosing in dose-response discrimination studies.

This study describes the results of a 'side-by-side' comparison of two measurement techniques and two dosing regimens in a discrimination study using rats trained to either 10 mg/kg cocaine or 2 mg/kg 3,4-methylenedioxymethamphetamine (MDMA). The…

Tags: 1997, 4-methylenedioxyamphetamine/*pharmacology, Animals, Chemical, Cocaine/*pharmacology, Discrimination Learning/*drug effects, Dose-Response Relationship, Drug, Drug Administration Schedule, Drug Evaluation, European journal of pharmacology, Male, N-Methyl-3, Preclinical, Rats, Schechter M D, Sprague-Dawley, Stimulation

Phentermine+fenfluramine produce cocaine-like discriminative cues.

Drug discrimination studies were conducted in six male Sprague-Dawley rats trained to discriminate the interoceptive cues produced by 10 mg/kg cocaine in an effort to investigate if there is stimulus generalization to phentermine or phentermine +…

Tags: *Discrimination (Psychology), 1996, Animals, Cocaine/*pharmacology, Department of Anatomy & Neurobiology, Dose-Response Relationship, Drug, Fenfluramine/administration & dosage/*pharmacology, Life sciences, Male, McBurney D, NEOMED College of Medicine, Phentermine/administration & dosage/*pharmacology, Rats, Schechter M D, Sprague-Dawley

Serotonergic mediation of fenfluramine discriminative stimuli in fawn-hooded rats.

Fenfluramine, a drug that induces increased synaptic serotonin, was used to train Fawn-Hooded rats in a drug discrimination paradigm. This strain of rats is thought to possess a genetic serotonin storage abnormality. The intent of the study was to…

Drug-drug discrimination: stimulus properties of drugs of abuse upon a serotonergic-dopaminergic continuum.

Ten male N/Nih rats were trained to discriminate between the interoceptive cues produced by the purportedly dopaminergically-mediated drug d-amphetamine at 0.4 mg/kg intraperitoneally administered 20 min prior to training and those produced by the…

Discriminative characteristics of high and low cocaine administration: effect of other psychostimulants.

Two groups of N/Nih male rats were trained to discriminate saline vehicle from either 2.0 mg/kg (n = 10) or 10.0 mg/kg (n = 10) cocaine in a food-motivated, two-lever operant paradigm. The rats trained at the low-dose cocaine took a significantly…

Rohypnol ("roofies") control of drug discrimination: effect of coadministered ethanol or flumenazil.

The benzodiazepine flunitrazepam (Rohypnol) was employed to control differentially discriminative performance in 10 Sprague-Dawley rats on a food-motivated FR10 schedule. The training dose was 2.5 mg/kg, and 20 min was employed between…

Tags: 1998, Animals, Anti-Anxiety Agents/*pharmacology, Discrimination Learning/*drug effects, Dose-Response Relationship, Drug, Drug Administration Schedule, Ethanol/*pharmacology, Flumazenil/*pharmacology, Flunitrazepam/*pharmacology, GABA Antagonists/*pharmacology, Male, Pharmacology, biochemistry, and behavior, Rats, Schechter M D, Sprague-Dawley

LSD produces conditioned place preference in male but not female fawn hooded rats.

Male and female Fawn Hooded rats were examined for conditioned place preference (CPP) or aversion (CPA) to lysergic acid diethylamide (LSD). Using a biased design, experimental animals were trained with LSD (0.2 mg/kg, I.P.) administered in…

Tags: *Cues, *Sex Characteristics, 1998, Analysis of Variance, Animals, Choice Behavior/*drug effects, Conditioning, Female, Humans, Inbred Strains, Lysergic Acid Diethylamide/*pharmacology, Male, Meehan S M, Operant/*drug effects, Pharmacology, biochemistry, and behavior, Rats, Schechter M D

MDMA-like stimulus effects of hallucinogens in male Fawn-Hooded rats.

A two-lever, food-motivated, operant technique was employed to train the purportedly serotonergically dysfunctional Fawn-Hooded (FH) rat to discriminate 1.5 mg/kg MDMA. Once all 10 male subjects learned the MDMA-vehicle discrimination at criterion…

Continued trends in the conditioned place preference literature from 1992 to 1996, inclusive, with a cross-indexed bibliography.

In light of the overwhelming response to the previous publication in Neuroscience and Biobehavioral Reviews (1993, 17, 21-41) regarding trends in place conditioning (either preference or aversion), the present work constitutes a five-year follow-up…

Tags: *Choice Behavior, *Conditioning, 1998, Animals, Calcagnetti D J, Classical, Experimental/*trends, Neuroscience and biobehavioral reviews, Operant, Psychology, Schechter M D

The formation of cocaethylene and clinical presentation of ED patients testing positive for the use of cocaine and ethanol.

The purpose of this investigation was to document the clinical presentation of emergency department (ED) patients who tested positive for concurrent cocaine (COC) and ethanol (EtOH) use and the incidence of cocaethylene (CE) formation in this study…

Behavioral effects of N-ethyl-3,4-methylenedioxyamphetamine (MDE; "EVE").

Eight male rats were trained to discriminate 2.0 mg/kg

Tags: 1987, 3, 4-methylenedioxyamphetamine, 4-Methylenedioxyamphetamine/analogs & derivatives/*pharmacology, Amphetamines/*pharmacology, Animals, Boja J W, Discrimination (Psychology), Dose-Response Relationship, Drug, Inbred Strains, Legislation, Male, N-Methyl-3, Pharmacology, biochemistry, and behavior, Rats, Schechter M D, Time Factors, United States

Increased drug sensitivity in the drug discrimination procedure afforded by drug versus drug training.

Rats were trained to discriminate norfenfluramine (NF) 1.4 mg/kg from its vehicle or amphetamine (AMPH) 0.8 mg/kg or pentobarbital (PB) 6.0 mg/kg in order to determine the role that drug combination training plays in the rate of learning and…

Tags: 1990, Amphetamine/pharmacology, Animals, Boja J W, Discrimination (Psychology)/*drug effects, Discrimination Learning/*drug effects, Dose-Response Relationship, Drug, Inbred Strains, Male, Norfenfluramine/pharmacology, Pentobarbital/pharmacology, Psychopharmacology, Rats, Reinforcement Schedule, Schechter M D

Norfenfluramine, the fenfluramine metabolite, provides stimulus control: evidence for serotonergic mediation.

Nine male rats were trained to discriminate 1.4 mg/kg norfenfluramine (NF) from its vehicle using a two-lever, food-motivated, operant discrimination task. Once trained, the rats showed a dose-dependent decrease in responding on the

Tags: 1988, Animal/*drug effects, Animals, Behavior, Boja J W, Discrimination (Psychology)/*drug effects, Dose-Response Relationship, Drug, Fenfluramine/*analogs & derivatives/*pharmacology, Inbred Strains, Male, Norfenfluramine/*pharmacology, Pharmacology, biochemistry, and behavior, Rats, Receptors, Schechter M D, Serotonin/pharmacology, Serotonin/physiology, Time Factors

Possible serotonergic and dopaminergic mediation of the

Eight male rats previously trained to discriminate 2.0 mg/kg

The antinociceptive effects of 3,4-methylenedioxymethamphetamine (MDMA) in the rat.

The antinociceptive effects of MDMA and morphine were examined in rats using the tail-flick and hot-plate analgesiometric tests. MDMA, in the dose range of 1.5-6.0 mg/kg IP, produced a dose-dependent elevation in hot-plate latency, but did not…

Discriminative stimulus properties of CGS 9896: interactions within the GABA/benzodiazepine receptor complex.

Male rats were trained to discriminate the stimulus effects of CGS 9896 (30.0 mg/kg) from its vehicle. Once trained, discriminative performance was observed to be dose-responsive in the 3.75-30.0 mg/kg range and analysis of the dose-response curve…

Discriminative stimulus control by the anxiogenic beta-carboline FG 7142: generalization to a physiological stressor.

Drug discrimination was employed to investigate the similarities between FG

Tags: 1988, Animals, Appetite Depressants/*pharmacology, Avoidance Learning/drug effects, Carbolines/*pharmacology, Discrimination Learning/*drug effects, Generalization, Inbred Strains, Leidenheimer N J, Male, Pharmacology, biochemistry, and behavior, Physiological/*psychology, Rats, Schechter M D, Stimulus/*drug effects, Stress

Inverse agonist properties of the THBC discriminative stimulus: asymmetrical generalization with FG 7142.

Male rats were trained to discriminate the stimulus properties of the beta-carbolines 1,2,3,4-tetrahydro-beta-carboline (THBC) (15.0 mg/kg) or FG 7142 (5.0 mg/kg) from vehicle in a two-lever, food-motivated operant task. Consistent with the…

Tags: 1991, Animals, Avoidance Learning/drug effects, Carbolines/antagonists & inhibitors/*pharmacology, Discrimination Learning/*drug effects, Dose-Response Relationship, Drug, GABA-A/*drug effects, Generalization, Inbred Strains, Leidenheimer N J, Male, Pharmacology, biochemistry, and behavior, Rats, Receptors, Schechter M D, Stimulus/*drug effects

Inverse agonist properties of the FG 7142 discriminative stimulus.

A two-lever, food-motivated discrimination was established between the benzodiazepine receptor partial inverse agonist FG 7142 (5.0 mg/kg) and its vehicle. The FG 7142 discriminative stimulus was pharmacologically characterized by testing trained…

Tags: 1991, Animals, Appetite Depressants/*pharmacology, Carbolines/antagonists & inhibitors/*pharmacology, Discrimination (Psychology)/*drug effects, Discrimination Learning/drug effects, Dose-Response Relationship, Drug, GABA-A/drug effects, Generalization, Inbred Strains, Leidenheimer N J, Male, Pharmacology, biochemistry, and behavior, Rats, Receptors, Reinforcement Schedule, Schechter M D, Stimulus/drug effects

Discriminative stimulus properties of (+)cathine, an alkaloid of the khat plant.

The effects of the psychostimulant (+)cathine (norpseudoephedrine) were examined in a two-choice, food-motivated, drug-discrimination paradigm. Rats were able to discriminate cathine from vehicle and this effect was dose- and time-dependent. Prior…

Tags: *Discrimination (Psychology)/drug effects, 1990, Alkaloids/*pharmacology, Animals, Catha, Domperidone/pharmacology, Drug Administration Schedule, Drug Tolerance, Haloperidol/pharmacology, Inbred Strains, Male, Pehek E A, Pharmacology, biochemistry, and behavior, Phenylpropanolamine/antagonists & inhibitors/*pharmacology, Plant Extracts/analysis, Psychotropic Drugs/*pharmacology, Rats, Schechter M D

Effects of cathinone and amphetamine on the neurochemistry of dopamine in vivo.

The effects of (-)cathinone, the primary psychoactive alkaloid of the Khat plant, were compared to those of (+)amphetamine in the anterior caudate-putamen and the nucleus accumbens. In vivo microdialysis was used to measure extracellular levels of…

Advantages and disadvantages of a rapid method to train drug discrimination.

In an effort to reduce the often extensive period of time needed to train rats to discriminate between a drugged and nondrugged state, a fast training regimen was employed with 1.5 mg/kg 3,4-methylenedioxymethamphetamine (MDMA) used as the training…

Tags: 1988, 3, 4-methylenedioxyamphetamine, 4-Methylenedioxyamphetamine/analogs & derivatives/*pharmacology, Amphetamines/*pharmacology, Animals, Discrimination Learning/*drug effects, Dose-Response Relationship, Drug, Drug Tolerance, Male, Methods, N-Methyl-3, Pharmacology, biochemistry, and behavior, Rats, Schechter M D

CGS 10746B is able to attenuate the effects of amphetamine: further evidence for dopaminergic mediation.

Previous results indicate that agents which either decreases synthesis or block postsynaptic dopamine receptors will attenuate the discriminative stimulus produced by d-amphetamine. CGS 10746B has been reported to decrease dopamine release without…

Tags: 1988, Alkaloids/pharmacology, Animals, Antipsychotic Agents/*pharmacology, Apomorphine/pharmacology, Boja J W, Cocaine/pharmacology, Conditioning, Dextroamphetamine/antagonists & inhibitors/*pharmacology, Discrimination (Psychology)/*drug effects, Dopamine/*physiology, Dose-Response Relationship, Drug, Male, Operant/drug effects, Pharmacology, biochemistry, and behavior, Rats, Schechter M D, Thiazepines/*pharmacology

Comparison of anorectic drugs in rats trained to discriminate between satiation and deprivation.

Eight male rats were trained to discriminate between the internal states produced by food deprivation of 3 hours (satiation) and that produced by food deprivation of 27 hours duration (deprivation). One lever, in a two-lever operant chamber, had to…

Tags: *Food Deprivation, 1990, Amphetamine/*pharmacology, Analysis of Variance, Animals, Discrimination Learning/*drug effects, Dose-Response Relationship, Drug, Fenfluramine/*analogs & derivatives/*pharmacology, Inbred Strains, Life sciences, Male, Norfenfluramine/*pharmacology, Rats, Satiation/*drug effects, Schechter M D

Discriminative stimulus effect of phenylephrine.

Rats were trained to discriminate phenylephrine in a two-lever, food-motivated operant task by increasing the i.p. administered training dose from 0.8 to 2 mg/kg. Stable discrimination to 2 mg/kg phenylephrine was established and testing of 0.5-2.5…

Dopaminergic nature of acute cathine tolerance.

Cathine is a psychoactive constituent in the leaves of the Khat shrub which are habitually ingested for their stimulatory effects in many parts of the world. Rats were trained to discriminate the stimulus effect of intraperitoneally administered 4.8…

Tags: 1990, Alkaloids/pharmacology, Animals, Antipsychotic Agents/pharmacology, Appetite Depressants/*pharmacology, Discrimination (Psychology)/drug effects, Discrimination Learning/drug effects, Dopamine/*physiology, Dose-Response Relationship, Drug, Drug Tolerance, Generalization (Psychology)/drug effects, Inbred Strains, Male, Pharmacology, biochemistry, and behavior, Phenylpropanolamine/*pharmacology, Rats, Schechter M D, Thiazepines/pharmacology

Effect of MDMA neurotoxicity upon its conditioned place preference and discrimination.

Experiments were conducted to investigate the functional consequences of a neurotoxic regimen of MDMA administration upon two behaviors, conditioned place preference and drug discrimination. Rats were trained to discriminate 1.5 mg/kg MDMA from its…

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