Title | Contingent drug tolerance: differential tolerance to the anticonvulsant, hypothermic, and ataxic effects of ethanol. |
Publication Type | Journal Article |
Year of Publication | 1995 |
Authors | Kim CK, Pinel JP, Dalal S, Kippin TE, Kalynchuk LE, Payne GJ |
Journal | Pharmacol Biochem Behav |
Volume | 52 |
Issue | 3 |
Pagination | 531-9 |
Date Published | 1995 Nov |
ISSN | 0091-3057 |
Keywords | Amygdala, Animals, Anticonvulsants, Ataxia, Body Temperature, Central Nervous System Depressants, Drug Tolerance, Electric Stimulation, Electrodes, Implanted, Ethanol, Kindling, Neurologic, Male, Rats |
Abstract | The kindled-convulsion model of epilepsy was used to study contingent tolerance to ethanol's (1.5 g/kg; IP) anticonvulsant, hypothermic, and ataxic effects in adult male rats. In the present experiments, three groups of amygdala-kindled rats received a series of bidaily (one every 48 h) convulsive stimulations: one group received ethanol 1 h before each stimulation; one group received ethanol 1 h after each stimulation; and another group served as the saline control. Tolerance to ethanol's anticonvulsant effect (Experiments 1 and 2) was greatest in those rats that received ethanol before each convulsive stimulation; whereas, tolerance to ethanol's hypothermic (Experiments 1 and 2) and ataxic (Experiments 2) effects developed in both groups that received ethanol. These results were predicted on the basis of the drug-effect theory of drug tolerance: the theory that functional drug tolerance is an adaptation to the disruptive effects of drugs on concurrent patterns of neural activity, not to drug exposure per se. |
Alternate Journal | Pharmacol. Biochem. Behav. |
PubMed ID | 8545470 |