title: Effects of morphine and met-enkephalin analogue on gastric lesions induced by indomethacin.
abstract: The effects of morphine HCl and a synthetic met-enkephalin analogue [D-Ala2,MePhe4,Met(O)5ol]enkephalin (FK 33-824) on gastric damage produced by the intraperitoneal administration of indomethacin (10 mg/kg i.p.) have been investigated. Rats intraperitoneally pretreated with morphine HCl (10 mg/kg i.p.) and FK 33-824 (1 mg/kg i.p.) showed a statistically significant reduction both of the number and intensity of lesions induced by indomethacin. This protection was reversed by naloxone HCl (2 mg/kg i.p.). The protective effect was not related to a reduction of gastric secretion since the antisecretory drug cimetidine (25 mg/kg i.p.) and methscopolamine bromide (10 mg/kg i.p.) did not significantly prevent mucosal damage under the same experimental conditions.
mesh_terms: D000818:Animals; D005405:D-Ala(2),MePhe(4),Met(0)-ol-enkephalin / Q000494:pharmacology*; D007213:Indomethacin / Q000037:antagonists & inhibitors* / Q000633:toxicity; D008297:Male; D009020:Morphine / Q000494:pharmacology*; D051381:Rats; D011919:Rats, Inbred Strains; D013276:Stomach Ulcer / Q000139:chemically induced / Q000517:prevention & control*
chemical_list: D005405:D-Ala(2),MePhe(4),Met(0)-ol-enkephalin; D009020:Morphine; D007213:Indomethacin