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Angiology
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In Situ Endothelin in Coronary Artery Disease

Jerome I. Brody, M.D.

Department of Medicine, the Medical College of Pennsylvania, and the Departments of Medicine and Laboratory Medicine, Thomas Jefferson University, Philadelphia, Pennsylvania.

David M. Capuzzi, M.D., Ph.D.

Department of Medicine, the Medical College of Pennsylvania, and the Departments of Medicine and Laboratory Medicine, Thomas Jefferson University, Philadelphia, Pennsylvania.

Gordon B. Fink, M.D.

Department of Pathology, Thomas Jefferson University, Philadelphia, Pennsylvania.

Despite the significant advances made in the understanding and treatment of coronary artery disease much remains unclear about the pathogenesis of this complex atherothrombotic process. Atherogenesis may reflect a combination of multiple factors interacting with one another leading to coronary artery occlusion. One potential partic ipant may be endothelin-1 (ET-1), a potent mitogenic vasoconstrictor. The presence of endothelin within saphenous veins before insertion and after removal during coronary artery bypass grafting (CABG) because of bypass closure, within internal mammary arteries before and after surgical intervention, and within native coronary artery segments resected during CABG was demonstrated immunocytochemically with an antiendothelin antibody and aminoethyl carbazole as the indicator chromogen. Increased amounts of ET-1 were observed in failed venous grafts, in damaged internal mammary artery grafts, and in vessels of the myocardium. These results suggest that ET-1 may play a significant pathophysiologic role in the evolution of coronary heart disease.

Angiology, Vol. 47, No. 11, 1027-1032 (1996)
DOI: 10.1177/000331979604701101
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