Nitric oxide plays a key role as a vasodilating agent and its deficiency is associated with ischemic heart diseases. The aim of this study was to induce biochemical alterations associated with ischemic heart lesions by blocking nitric oxide synthase. L-NAME, a nitric oxide synthase inhibitor, was administered to rabbits and its effects on blood pressure, plasma levels of nitric oxide, zinc and cardiac necrosis markers, heart histology, and electrocardiographic profile were examined. L-NAME administration reduced the nitric oxide levels and consequently increased the diastolic blood pressure. It also caused small areas of myocardial coagulative necrosis, whose dispersed nature made it undetectable by electrocardiograph, and decreased the plasma levels of zinc, which is involved in the enzymatic activities that remove the peroxides damaging the myocardium. This model is proposed for the development of drugs affecting nitric oxide levels with the aim of controlling coronary ischemia.
Low nitric oxide values associated with low levels of zinc and high levels of cardiac necrosis markers detected in the plasma of rabbits treated with L-NAME / A. Pinelli, S. Trivulzio, L. Tomasoni, B. Bertolini, S. Brenna, E. Bonacina. - In: JOURNAL OF CARDIOVASCULAR PHARMACOLOGY. - ISSN 0160-2446. - 37:3(2001 Mar), pp. 310-316.
|Titolo:||Low nitric oxide values associated with low levels of zinc and high levels of cardiac necrosis markers detected in the plasma of rabbits treated with L-NAME|
PINELLI, ARNALDO (Primo)
TRIVULZIO, SILVIO GIUSEPPE (Secondo)
|Parole Chiave:||Blood pressure; Myocardial necrosis; Nitric oxide; Plasma necrosis markers; Zinc|
|Settore Scientifico Disciplinare:||Settore BIO/14 - Farmacologia|
|Data di pubblicazione:||mar-2001|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1097/00005344-200103000-00009|
|Appare nelle tipologie:||01 - Articolo su periodico|