title: Cimetidine and stress ulcer in aged rats.
abstract: Male Sprague-Dawley rats, 2, 6, 11, 18, and 26 months old, were subdivided into four drug treatment groups and received either 25, 50, 100 mg/kg of cimetidine or a placebo control before being exposed to restraint plus cold stress for 3 hr. Cimetidine, at all dose levels, significantly reduced ulcer severity in all age groups except the 18- and 26-month-old rats. Senescent rats were not more susceptible to restraint ulcer and cimetidine had the least anti-ulcer effect with the senescent 26-month-old rats.
mesh_terms: D000367:Age Factors; D000818:Animals; D002927:Cimetidine / Q000627:therapeutic use*; D004305:Dose-Response Relationship, Drug; D008297:Male; D051381:Rats; D011919:Rats, Inbred Strains; D012149:Restraint, Physical; D013276:Stomach Ulcer / Q000517:prevention & control*; D013312:Stress, Physiological / Q000150:complications*
chemical_list: D002927:Cimetidine