title: Effects of pirenzepine and atropine on gastric secretory and plasma hormonal responses to sham-feeding in patients with duodenal ulcer.
abstract: The effects of atropine and pirenzepine on sham-feeding stimulated gastric secretion and serum gastrin and pancreatic polypeptide levels have been studied in 12 patients with duodenal ulcer. Both atropine and pirenzepine caused a dose-dependent decrease in acid and pepsin secretion induced by sham-feeding. Serum gastrin response to sham-feeding was negative and it was enhanced by atropine but suppressed by pirenzepine. Plasma pancreatic polypeptide level, which was markedly increased by sham-feeding, was abolished both by atropine and pirenzepine. This study shows that pirenzepine is a more selective inhibitor of gastric secretory and serum hormonal responses to sham-feeding than atropine and that it may be a useful tool for studying the cholinergic innervation of the oxyntic glands and the G-cells in man.
mesh_terms: D000328:Adult; D001285:Atropine / Q000494:pharmacology*; D001570:Benzodiazepinones / Q000494:pharmacology*; D004305:Dose-Response Relationship, Drug; D004381:Duodenal Ulcer / Q000188:drug therapy / Q000503:physiopathology*; D004435:Eating; D005744:Gastric Acid / Q000378:metabolism*; D005755:Gastrins / Q000097:blood*; D006801:Humans; D010191:Pancreatic Polypeptide / Q000097:blood*; D010879:Piperazines / Q000494:pharmacology*; D010890:Pirenzepine
chemical_list: D001570:Benzodiazepinones; D005755:Gastrins; D010879:Piperazines; D010890:Pirenzepine; D010191:Pancreatic Polypeptide; D001285:Atropine