Inhibition by clonidine of morphine-induced running fit but not analgesia in C57BL/6 mice
Filibeck, U.; Castellano, C.; Vetulani, J.; Oliverio, A.
Polish Journal of Pharmacology and Pharmacy 32(2): 149-154
1980
ISSN/ISBN: 0301-0244 PMID: 7192861 Document Number: 5425
Clonidine, 0.25 and 0.5 mg/kg, depressed significantly the running fit induced by 10 or 20 mg/kg of morphine in C57BL/6 mice, but did not affect morphine analgesia measured by the "hot plate" test. The results confirm the hypothesis that different mechanisms are involved in the two types of response to morphine, and the running fit response is mediated via a noradrenergic mechanism of action.
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