TY  - JOUR
PY  - 1977//
TI  - Evidence for parallel development of tolerance to the hyperactivating and discoordinating effects of ethanol
JO  - Psychopharmacology
A1  - Hunt, G. P.
A1  - Overstreet, D. H.
SP  - 75
EP  - 81
VL  - 55
IS  - 1
N2  - Rats maintained on diets containing 6.5% ethanol or equicaloric sucrose solutions were challenged at weekly intervals with 1.5 or 2.0 g/kg ethanol or isotonic saline 14 h after withdrawal from the diet. Tolerance developed to both the hyperactivating (increased line crossings and time active) and discoordinating (disrupted rotarod performance) effects of the 1.5 g/kg dose of ethanol, but was less obvious with the 2.0 g/kg dose. Chlorpromazine (2.5 mg/kg) had a greater depressant effect in animals chronically treated with ethanol, suggesting that some alterations in the functioning of noradrenergic and/or dopaminergic systems may accompany chronic ethanol treatment. However, amphetamine and propranolol did not appear to affect ethanol- and sucrose-treated rats differently. The present studies have therefore shown a parallel development of tolerance to the discoordinating and hyperactivating effects of ethanol and have implicated an underlying noradrenergic and/or dopaminergic mechanism, although the precise nature of the mechanism has not been clarified.<p /> <p>Language: en</p>
LA  - en
SN  - 0033-3158
UR  - http://dx.doi.org/
ID  - ref1
ER  -