Anandamide, an endogenous ligand of the cannabinoid receptor, induces hypomotility and hypothermia in vivo in rodents

Jacqueline Crawley, Rebecca L. Corwin, John K. Robinson, Christian C. Felder, William A. Devane, Julius Axelrod

Research output: Contribution to journalArticle

205 Scopus citations

Abstract

Anandamine (arachidonylethanolamide), an arachidonic acid derivative isolated from the porcine brain, displays binding characteristics indicative of an endogenous ligand for the cannabinoid receptor. The functional activity of anandamide was tested in vivo using behavioral and physiological paradigms in laboratory rodents. At IP doses from 2 to 20 mg/kg in mice, anandamide significantly decreased spontaneous motor activity in a Digiscan open field. Rectal body temperature significantly decreased at doses of 10 and 20 mg/kg in rats. At doses from 0.03 to 30 mg/kg, anandamide had no significant effect on chow consumption in ad lib fed rats. Over the dose range of 2-20 mg/kg, anandamide did not show anxiolytic properties in the mouse light ⇌ dark exploration model of anxiety. Over the dose range of 0.3-3 mg/kg, anandamide had no effect on choice accuracy or session duration in the delayed nonmatching to sample memory task (DNMTS) in rats. These results demonstrate that anandamide has biological and behavioral effects in awake rodents, some of which are similar to the reported actions of THC.

Original languageEnglish (US)
Pages (from-to)967-972
Number of pages6
JournalPharmacology, Biochemistry and Behavior
Volume46
Issue number4
DOIs
StatePublished - 1993
Externally publishedYes

Keywords

  • Anxiety
  • Behavior
  • Body temperature
  • Cannabis
  • Feeding
  • Marijuana
  • Memory
  • Receptor
  • Rodent
  • Sedation

ASJC Scopus subject areas

  • Biochemistry
  • Behavioral Neuroscience
  • Pharmacology

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