Loperamide inhibits corticotrophic cell function by a naloxone-insensitive mechanism in the rat in vitro.

Abstract

The effect of the antidiarrheal drug loperamide, a mu-opiate agonist, on ACTH secretion and biosynthesis, cAMP generation and phosphoinositide turnover was studied in rat anterior pituitary cell cultures. The cAMP-dependent protein kinase A pathway was stimulated with both corticotropin-releasing hormone (CRH; 2-5 nM) and the membrane-permeable Bu(2)cAMP (0… (More)

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