Title : Endothelin-1 increases vascular superoxide via endothelin(A)-NADPH oxidase pathway in low-renin hypertension.

Pub. Date : 2003 Feb 25

PMID : 12600921






4 Functional Relationships(s)
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1 METHODS AND RESULTS: This study investigated (1) whether and how endothelin-1 (ET-1), which is increased in DOCA-salt hypertensive rats, contributes to arterial superoxide generation and (2) the effect of gene transfer of manganese superoxide dismutase and endothelial nitric oxide synthase. Desoxycorticosterone Acetate endothelin 1 Rattus norvegicus
2 METHODS AND RESULTS: This study investigated (1) whether and how endothelin-1 (ET-1), which is increased in DOCA-salt hypertensive rats, contributes to arterial superoxide generation and (2) the effect of gene transfer of manganese superoxide dismutase and endothelial nitric oxide synthase. Desoxycorticosterone Acetate endothelin 1 Rattus norvegicus
3 Both superoxide and ET-1 levels were significantly elevated in carotid arteries of DOCA-salt rats compared with that of the sham-operated controls. Desoxycorticosterone Acetate endothelin 1 Rattus norvegicus
4 The increase in arterial superoxide in both ET-1-treated normotensive and DOCA-salt rats was reversed by a selective ET(A) receptor antagonist, ABT-627, the flavoprotein inhibitor diphenyleneiodonium, and the NADPH oxidase inhibitor apocynin but not by the nitric oxide synthase inhibitor N(omega)-L-arginine methyl ester or the xanthine oxidase inhibitor allopurinol. Desoxycorticosterone Acetate endothelin 1 Rattus norvegicus