[The expression of atrial natriuretic peptide in the cardiomyocytes of left ventricular aneurysms]. / Expresión del péptido natriurético auricular en los cardiomiocitos de aneurismas de ventrículo izquierdo.

ABSTRACT

We report three patients with left ventricular aneurysm who underwent coronary artery bypass grafting and resection of the ventricular aneurysm. The walls of the aneurysms were immunohistochemically investigated to study whether atrial natriuretic peptide was present or not. Immunoreactivity for atrial natriuretic peptide was observed in some of the viable cardiomyocytes within the scar tissue. Mechanisms of regulation of the expression of atrial natriuretic peptide are discussed.