Title : SR141716A-sensitive enhancement of ET-1 hypotensive effect by chronic NOS inhibition.

Pub. Date : 2003 Oct

PMID : 12913062






4 Functional Relationships(s)
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1 The present study evaluated the potential mechanism involved in the hypotensive effect induced by ET-1 in rats treated with the NO synthase inhibitor NG-nitro-L-arginine methyl ester (L-NAME) in the drinking water during 7 days. NG-Nitroarginine Methyl Ester endothelin 1 Rattus norvegicus
2 The present study evaluated the potential mechanism involved in the hypotensive effect induced by ET-1 in rats treated with the NO synthase inhibitor NG-nitro-L-arginine methyl ester (L-NAME) in the drinking water during 7 days. NG-Nitroarginine Methyl Ester endothelin 1 Rattus norvegicus
3 The enhanced ET-1 hypotensive effect in L-NAME-treated rats was abolished by the ETB receptor antagonist BQ-788 but was unaltered by the cyclooxygenase inhibitor diclofenac, the cytochrome P450 inhibitor fluconazole, or the potassium channel blockers apamin, glibenclamide, tetraethylammonium, and 4-aminopyridine. NG-Nitroarginine Methyl Ester endothelin 1 Rattus norvegicus
4 Pretreatment with the cannabinoid CB1 receptor antagonist SR141716A significantly reduced the hypotensive response to ET-1 in L-NAME-treated rats (20+/-1%), although it did not modify the response in untreated control rats (17+/-1%). NG-Nitroarginine Methyl Ester endothelin 1 Rattus norvegicus