Ultrastructure of nuclear compartment in cardiomyocytes during regenerative and plastic insufficiency of the myocardium.

Abstract:

:We studied ultrastructure of nuclear compartment in cardiomyocytes during regenerative and plastic insufficiency of the myocardium induced by anthracycline antibiotic daunomycin. A peculiarity of ultrastructural organization of cardiomyocyte nuclei under these conditions is almost complete disappearance of the heterochromatin lumps. The earliest changes in nucleoli under conditions of disturbed DNA-dependent RNA synthesis are segregation of the granular and fibrillar nucleolonema components. Deep alterations in the nucleoli manifested by fragmentation and annulation correlate with pronounced changes in cardiomyocytes ultrastructure, intensive lysis of the myofilaments, reduction of the organelles, and enhanced autophagocytosis.

journal_name

Bull Exp Biol Med

authors

Nepomnyashchikh LM,Lushnikova EL,Semenov DE

subject

Has Abstract

pub_date

2000-12-01 00:00:00

pages

1196-201

issue

12

eissn

0007-4888

issn

1573-8221

journal_volume

130

pub_type

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