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  • Title: Constitutive nitric oxide modulates the injurious actions of vasopressin on rat intestinal microcirculation in acute endotoxaemia.
    Author: László F, Whittle BJ.
    Journal: Eur J Pharmacol; 1994 Aug 01; 260(2-3):265-8. PubMed ID: 7988655.
    Abstract:
    The administration of the nitric oxide (NO) synthase inhibitor, NG-nitro-L-arginine methyl ester (L-NAME, 5 mg/kg s.c.) concurrently with Escherichia coli endotoxin (3 mg/kg i.v.) increased vascular permeability and caused mucosal damage in the rat intestine 1 h later. The vasopressin V1 receptor antagonist, [Mca1,Tyr(Me)2, Arg8]vasopressin (0.01-0.2 microgram/kg s.c., 15 min before endotoxin) dose-dependently reduced this damage. These results suggest a beneficial role of NO, counteracting the injurious vascular actions of endogenous vasopressin, in maintaining intestinal mucosal integrity in acute endotoxaemic states.
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