Effect of opioid antagonist naloxone on maternal motivation in albino rats.
We studied the effect of nonselective antagonist of opioid receptor naloxone on the behavior of albino female rats on days 4-6 after delivery. Intraperitoneal injection of naloxone (5 mg/kg) significantly stimulated maternal reactions (increased the number of approaches to pups, decreased the latency of their transfer into new location). Intranasal naloxone (1 mg/kg) produced similar changes. Naloxone in intraperitoneal dose of 1 mg/kg and intranasal dose of 0.2 mg/kg virtually did not modify maternal behavior.
Dobryakova
Yu V
YV
Department of Human and Animal Physiology, Biological Faculty, M. V. Lomonosov Moscow State University.
Dubynin
V A
VA
Ivleva
Yu A
YA
Belyaeva
Yu A
YA
Kamenskii
A A
AA
D000818:Animals; D005260:Female; D008425:Maternal Behavior / Q000187:drug effects*; D009042:Motivation; D009270:Naloxone / Q000494:pharmacology*; D009292:Narcotic Antagonists / Q000494:pharmacology*; D051381:Rats; D011922:Rats, Mutant Strains
D009292:Narcotic Antagonists; D009270:Naloxone