A pharmacological analysis of levonantradol antinociception in mice.

Abstract:

:Using the hot plate test, the potency and mechanism of the analgesic activity of levonantradol was studied in mice. Levonantradol is 10 to 30 times more potent than morphine; the antinociception can be only partially blocked by naloxone. Similar limited antagonism by cholinergics indicates possible opiodergic mechanism. The role of serotoninergic pathways is unclear; antinociception is partially blocked by 5,7-dihydroxytryptamine, unaffected by p-chlorophenylalanine, and potentiated by cyproheptadine. Levonantradol blocks naloxone-induced signs of abstinence in morphine-dependent mice, being 3000 times more potent than morphine and 300 times more potent than delta 9-tetrahydrocannabinol (THC).

journal_name

J Clin Pharmacol

authors

Jacob JJ,Ramabadran K,Campos-Medeiros M

doi

10.1002/j.1552-4604.1981.tb02611.x

subject

Has Abstract

pub_date

1981-08-01 00:00:00

pages

327S-333S

issue

S1

eissn

0091-2700

issn

1552-4604

journal_volume

21

pub_type

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