Title : Intracisternal injection of TRH precursor, TRH-glycine, stimulates gastric acid secretion in rats.

Pub. Date : 1989 Apr

PMID : 2497500






5 Functional Relationships(s)
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1 Intracisternal injection of thyrotropin-releasing hormone (TRH)-Gly (pGlu-His-Pro-Gly) produced a dose-dependent (1-100 micrograms) stimulation of gastric acid secretion in urethane-anesthetized rats implanted acutely with a gastric fistula. Glycine thyrotropin releasing hormone Rattus norvegicus
2 Intracisternal injection of thyrotropin-releasing hormone (TRH)-Gly (pGlu-His-Pro-Gly) produced a dose-dependent (1-100 micrograms) stimulation of gastric acid secretion in urethane-anesthetized rats implanted acutely with a gastric fistula. Glycine thyrotropin releasing hormone Rattus norvegicus
3 Thereafter, TRH values are returned to basal levels at 75 min after the injection, whereas TRH-Gly concentrations remain significantly elevated throughout the 2-h period of measurement. Glycine thyrotropin releasing hormone Rattus norvegicus
4 Medullary coronal sections containing the dorsal vagal complex and the raphe nucleus revealed increased content of TRH-Gly, but not TRH, 40 min after administration of TRH-Gly at an intracisternal dose effective in stimulating gastric acid secretion (100 micrograms). Glycine thyrotropin releasing hormone Rattus norvegicus
5 These data suggest that the intracisternal TRH-Gly-induced stimulation of gastric acid secretion is not related to its conversion to TRH in the CSF, or direct activation of TRH receptors in the medulla. Glycine thyrotropin releasing hormone Rattus norvegicus