EFFECTS OF L-GLUTAMINE ON ACETYLSALYCYLIC ACID INDUCED GASTRIC LESIONS AND ACID BACK DIFFUSION IN DOGS
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概要
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Effects of L-glutamine on acetylsalicylic acid (ASA)-induced gastric mucosal lesions were studied in mongrel dogs. It was confirmed that when oral ASA at 1.0 or 2.0 g per dog is given in two divided doses, there is severe and consistent dose-dependent mucosal damage in the glandular portion of the stomach in fasted dogs. However, when L-glutamine 2.0 or 4.0 g per dog in two divided doses is given concomitantly with ASA 2.0 g per dog orally, the gastric irritation is significantly inhibited. Instillation of 20 mM of ASA in 100 mM HCl solution into the Heidenhain pouch of Beagle dogs produced a significant loss of H<SUP>+</SUP> from the pouch and a gain of Na<SUP>+</SUP> in the lumen compared with ASA-free controls. When L-glutamine (100 mM) was given concomitantly with ASA (20mM) into the pouch, changes of electrolyte fluxes in response to ASA alone were significantly suppressed. However, 50 mM of L-glutamine had no appreciable effect on acid back diffusion caused by ASA 20 mM. The amino acid itself had little effect on the ionic movement in the pouch. Gross bleeding from the pouch treated with ASA was never observed with the concomitant dosing of ASA and L-glutamine 50 or 100 mM.
- 社団法人 日本薬理学会の論文
著者
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Okabe Susumu
Department Of Applied Pharmacology Kyoto College Of Pharmacy
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HUNG Chen
Department of Chemical Pharmacology, Faculty of Pharmaceutical Sciences, University of Tokyo
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TAKAGI Keijiro
Department of Chemical Pharmacology, Faculty of Pharmaceutical Sciences, University of Tokyo
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Takeuchi Koji
Department Of Applied Pharmacology Kyoto College Of Pharmacy
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MURATA Teizo
Department of Chemical Pharmacology, Faculty of Pharmaceutical Sciences, University of Tokyo
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Takeuchi Koji
Department of Air Pollution Control, National Research Institute for Pollution and Resources
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TAKAGI Keijiro
Department of Chemical Pharmacology, Faculty of Pharmaceutical Sciences University of Tokyo
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