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The effect of the endogenous vasoconstrictor peptide, endothelin, on gastric mucosal integrity has been investigated in the rat. Local intra-arterial infusion of endothelin, in picomole doses, dose-dependently induced haemorrhagic and necrotic damage in the gastric mucosa. Such injury was not prevented by atropine, cimetidine, adrenoceptor antagonists, indomethacin, or the 5-lipoxygenase inhibitor BW A4C. These results suggest a potential pro-ulcerogenic role of endothelin in the pathogenesis of gastric damage and ulceration.
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Whittle et al. (1988) studied this question.
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