THYROTROPHIN-RELEASING HORMONE INHIBITS THE PENTAGASTRIN STIMULATED GASTRIC SECRETION IN MAN. A DOSE RESPONSE STUDY

Abstract
Actions of thyrotrophin-releasing hormone (TRH) have generally been confined to the CNS. The effect of increasing doses of TRH i.v. (8, 40, 200 and 1000 .mu.g/h) on pentagastrin-stimulated gastric secretion was studied in 10 normal individuals. All doses caused stepwise inhibition of gastric juice (volume), acid and pepsin output. When employing the lartest dose of i.v. TRH (1000 .mu.g/h) the inhibition was 44% for gastric volume, 51% for acid output and 57% for pepsin output. TRH inhibits gastric secretion and TRH has actions outside the CNS in man.