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Protective effect of taurine against ammonia-induced gastric mucosal lesions in rats

M Murakami1, J K Yoo, S Teramura

  • 1Department of Geriatric Medicine, Faculty of Medicine, Kyoto University, Japan.

Japanese Journal of Pharmacology
|December 1, 1989
PubMed

Insights

Gastric ammonia can cause stomach injury, especially during ischemia. Taurine pretreatment significantly reduced these lesions, suggesting monochloramine

Area of Science:

  • Gastroenterology
  • Toxicology
  • Pathophysiology

Background:

  • Gastric ammonia is present in the stomach.
  • The role of ammonia in gastric lesion development is not fully understood.

Purpose of the Study:

  • To investigate the role of gastric ammonia in the development of gastric lesions in a rat model.
  • To explore the potential protective effects of taurine against ammonia-induced gastric injury.

Main Methods:

  • Rats were exposed to gastric ammonia (30 mM).
  • Gastric lesions were induced by ischemia in some rats.
  • The effect of taurine pretreatment on lesion development was assessed.

Main Results:

  • Ammonia exposure alone caused microscopic gastric injury but no macroscopic lesions.
  • Ammonia exposure in ischemic rats resulted in macroscopic gastric lesions.
  • Taurine pretreatment significantly inhibited the formation of these macroscopic lesions.

Conclusions:

  • Gastric ammonia is detrimental to the gastric mucosa, particularly under ischemic conditions.
  • Monochloramine may play a role in the pathogenesis of ammonia-induced gastric mucosal lesions.
  • Taurine demonstrates a protective effect, likely through scavenging reactive species like hypochlorous acid and monochloramine.

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