[Structural rearrangement of cardiac and renal arteries in experimental aortic coarctation]

Intramural heart arteries of 25 dog pups with a hemodynamic model of the aorta coarctation and 15 control dogs are studied histologically, histochemically and morphometrically. Coarctation results in the development of adaptive alterations (hypertrophy of circular muscles in the coronary arteries and their atrophy in the renal arteries, hypertrophy of the longitudinal--oblique muscles in the arteries of both organs) and pathologic damages (sclerosis of the large heart arteries and small arteries and arterioles of kidneys).