Effects of 16, 16-dimethyl prostaglandin E2 on bile-induced histamine release and permeability alterations in canine oxyntic mucosa

Canadian Journal of Physiology and Pharmacology
B L Tepperman

Abstract

Damage to the stomach results in excessive movement of hydrogen ion (H+) out of the lumen, and increased movement of sodium (Na+) and potassium (K+) into the lumen. Histamine liberation during damage probably adds to the destruction by increased capillary permeability and formation of edema. Previous reports have shown that the synthetic prostaglandin analogue 16,16-dimethyl prostaglandin E2 (Dm PGE2) protects dog gastric mucosa from aspirin- and ethanol-induced gastric mucosa damage. The effects of dm PGE2 on bile salt (sodium taurocholate) induced injury has not been investigated. Using the canine Heidenhain pouch, the present study examined the action of dm PGE2 on gastric mucosal damage induced by 5 mM sodium taurocholate in 100 mM HCl. Bile salt damaged the pouch mucosa as evidenced by an increased loss of H+, and increased net fluxes of both Na+ and K+. There was also an increase in the histamine content of the fluid irrigating the Heidenhain pouch. Intravenous injection of dm PGE2 in the doses 0.1 and 1.0 microgram/kg 1/2 h before administration of the sodium taurocholate in HCl significantly reduced the net loss of H+ and the gain of Na+, K+, and histamine. It is concluded the dm PGE2 effectively protects the canine gas...Continue Reading

Citations

Jun 1, 1985·Scandinavian Journal of Gastroenterology·S J Konturek

Related Concepts

Metazoa
Biliary Sludge
Canis familiaris
Structure of Pyloric Gland
Histamine Release
Hydrogen Chloride
Permeability
Potassium
Prostaglandins E, Synthetic
Sodium

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