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  • Title: A comparison of coronary arteries from Japanese and NZ subjects.
    Author: Sims FH, Yoshida Y, Sakurai I, Tsuda Y, Wakasugi C.
    Journal: Pathology; 1995 Jul; 27(3):215-20. PubMed ID: 8532385.
    Abstract:
    This paper describes a comparison of the anterior descending branch of the left coronary artery from 198 Japanese subjects of ages less than 60 yrs, with 301 New Zealand individuals of similar ages. The object of the study was to determine whether there were structural differences present which could be partially responsible for the low incidence of atherosclerosis in Japanese as well as the known low blood lipid levels. It was found that the internal elastic lamina of Japanese coronary arteries was less well formed at birth than that of NZ subjects. Intimal thickening was greater in Japanese coronary arteries from birth to the end of the first decade, but increased less rapidly with age, and was only about half as great as that of NZ vessels in the older age groups. The thickened intima of Japanese arteries was more uniform round the circumference of the vessel, the luminal surface was better formed with more stainable elastin present subjacent to the endothelial cells, and there was less evidence of mural thrombosis. NZ arteries showed pronounced eccentricity of the intima, more extensive lipid deposits, a poorly defined luminal surface, and frequent evidence of mural thrombosis.
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