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The histo- and ultrastructural characteristics of the myocardium and vascular wall in patients with type 2 diabetes mellitus

https://doi.org/10.14341/probl200551333-38

Abstract

The histo- and ultrastructural characteristics ofmyocardial and vascular lesions were studied in 27 patients (15 males and 12 females) with type 2 diabetes mellitus (DM), coronary heart disease (CHD), and atherosclerosis obliterans of lower extremity vessels. The lifetime endomyocardial biopsy specimens, intraoperative leg arterial biopsy specimens taken from intact tissues during leg amputation and поп-infarction areas of the left ventricular myocardium, autoptically taken from 32 patients who had died from complications due to atherosclerosis were examined. Myocardial ultrastructural derangement in type 2 DM was found to primarily affect the structures responsible for the energy and plastic metabolism in the cardiomyocytes. Moreover, the most pronounced functional changes were associated with cardiac diastolic function. The morphological pattern of damage to endotheliocytes, working cells of the myocardium and the ultrastructural organization of microvessels in patients with type 2 DM are directly related to the severity of hormone metabolic disorders, hyperinsulinemia and hyperglycemia in particular. The changes found in the microcirculatory system in type 2 DM were pronounced to the extent that the presence of coronary artery stenoses aggravated the typical changes in the architectonics and cardiomyocytic functions no longer.

About the Authors

A. L. Davydov

Moscow state university for medicine and dentistry


Russian Federation


L. Yu. Baranova

Moscow state university for medicine and dentistry


Russian Federation


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Review

For citations:


Davydov A.L., Baranova L.Yu. The histo- and ultrastructural characteristics of the myocardium and vascular wall in patients with type 2 diabetes mellitus. Problems of Endocrinology. 2005;51(3):33-38. (In Russ.) https://doi.org/10.14341/probl200551333-38

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