[Atherosclerosis of the aorta and coronary arteries in men living in Iakutia (an epidemiologic pathologo-anatomical study)].

A quantitative study was made of atherosclerosis in the aorta and coronary arteries in 3 groups of 20-59-year old male patients: (1) aborigines such as Yakuts, Chukchi, Evenks; (2) those born in the North (Russians born in Yakutia); and (3) new comers (120, 103, and 233 cases, respectively) after Sudan IV staining of the aortas and coronary arteries. The frequency and extent of fatty streaks, fibrous plaques, complicated lesions, and calcinosis were determined. The severity of atherosclerosis was found to be slightest in the aborigines; differences between those born in the North and new comers were small; yet coronary stenoses (greater than or equal to 50% of the lumen) were substantially more common in the former. Aortic intimal rhythmic structures were significantly more frequently detected in the aborigines than in those born in the North and new comers. The age-specific parameters for the abdominal aorta in the age groups of 20-59 years were 58.9, 37.0, and 39.8%, respectively.