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Antinociceptive activity and mechanism of action of detomidine
Author(s) -
VIRTANEN RAIMO
Publication year - 1986
Publication title -
journal of veterinary pharmacology and therapeutics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.527
H-Index - 60
eISSN - 1365-2885
pISSN - 0140-7783
DOI - 10.1111/j.1365-2885.1986.tb00043.x
Subject(s) - detomidine , xylazine , pharmacology , nociception , rauwolscine , morphine , mechanism of action , idazoxan , tail flick test , analgesic , chemistry , anesthesia , medicine , ketamine , yohimbine , biochemistry , receptor , in vitro , prazosin , antagonist
The antinociceptive activity and mechanism of action of detomidine, a novel sedative‐analgesic, were studied in mice and rats. Xylazine and morphine were included in the studies for comparison. In both acetic acid‐induced writhing test in mice, and in tail flick test in rats, detomidine had potent, dose‐dependent antinociceptive effects with ED 50 values of 0.06 and 0.2 mg/kg i.p., respectively. Both xylazine and morphine were clearly less potent than detomidine in these tests. The antinociceptive effect of detomidine was only inhibited by alpha‐2 antagonists (idazoxan, rauwolscine), which suggests that this action is mediated through stimulation of alpha‐2 adrenoceptors. The significance of these Findings for the use of detomidine in veterinary medicine is discussed.
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