Journal
JOURNAL OF PHYSIOLOGY-PARIS
Volume 95, Issue 1-6, Pages 105-127Publisher
ELSEVIER SCI LTD
DOI: 10.1016/S0928-4257(01)00015-8
Keywords
gastric mucosal blood flow; gastric mucosal damage; mucosal protection
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The stomach is in a state of continuous exposure to potentially hazardous agents. Hydrochloric acid together with pepsin constitutes a major and serious threat to the gastric mucosa. Reflux of alkaline duodenal contents containing bile and pancreatic enzymes arc additional important injurious factors of endogenous origin. Alcohol, cigarette smoking, drugs and particularly aspirin and aspirin-like drugs, and steriods are among exogenous mucosal irritants that can inflict mucosal injury. The ability of the stomach to defend itself against these noxious agents has been ascribed to a number of factors constituting the gastric mucosal defense. These include mucus and bicarbonate secreted by surface epithelial cells, prostaglandins, sulfhydryl compounds and gastric mucosal blood flow. The latter is considered by several researchers to be of paramount importance in maintainig gastric mucosal integrity. The aim of this paper is to review the experimental and clinical data dealing with the role of mucosal blood flow and in particular the microcirculation in both damage and protection of the gastric mucosa. (C) 2001 Elsevier Science Ltd. All rights reserved.
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