Morphological and stereological characteristics of myocardial remodeling in aged spontaneously hypertensive SHR rats. 2003

E L Lushnikova, and L M Nepomnyashchikh
Laboratory of Cytology and Cell Biology, Institute of Regional Pathology and Pathomorphology, Siberian Division of the Russian Academy of Medical Sciences, Novosibirsk. pathol@ceber.ma.nsk.ru

Myocardial remodeling in SHR rats with age-related hypertrophy was characterized by elimination of cardiomyocytes, their hypertrophy, and marked increase in the volume of the connective tissue. The count of cardiomyocytes with contracture injuries and subsegmental contractures increased, and pronounced perivascular and interstitial sclerosis developed in the hypertrophic myocardium of SHR rats. Damage to the microcirculatory bed manifested in degenerative changes and destruction of some endotheliocytes. Signs of atypical intracellular regeneration in myofibrils and impairment of their longitudinal orientation were revealed in cardiomyocytes in the late stage of compensatory hypertrophy.

UI MeSH Term Description Entries
D008297 Male Males
D009206 Myocardium The muscle tissue of the HEART. It is composed of striated, involuntary muscle cells (MYOCYTES, CARDIAC) connected to form the contractile pump to generate blood flow. Muscle, Cardiac,Muscle, Heart,Cardiac Muscle,Myocardia,Cardiac Muscles,Heart Muscle,Heart Muscles,Muscles, Cardiac,Muscles, Heart
D011918 Rats, Inbred SHR A strain of Rattus norvegicus with elevated blood pressure used as a model for studying hypertension and stroke. Rats, Spontaneously Hypertensive,Rats, SHR,Inbred SHR Rat,Inbred SHR Rats,Rat, Inbred SHR,Rat, SHR,Rat, Spontaneously Hypertensive,SHR Rat,SHR Rat, Inbred,SHR Rats,SHR Rats, Inbred,Spontaneously Hypertensive Rat,Spontaneously Hypertensive Rats
D000375 Aging The gradual irreversible changes in structure and function of an organism that occur as a result of the passage of time. Senescence,Aging, Biological,Biological Aging
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D017208 Rats, Wistar A strain of albino rat developed at the Wistar Institute that has spread widely at other institutions. This has markedly diluted the original strain. Wistar Rat,Rat, Wistar,Wistar Rats
D051381 Rats The common name for the genus Rattus. Rattus,Rats, Laboratory,Rats, Norway,Rattus norvegicus,Laboratory Rat,Laboratory Rats,Norway Rat,Norway Rats,Rat,Rat, Laboratory,Rat, Norway,norvegicus, Rattus
D020257 Ventricular Remodeling The geometric and structural changes that the HEART VENTRICLES undergo, usually following MYOCARDIAL INFARCTION. It comprises expansion of the infarct and dilatation of the healthy ventricle segments. While most prevalent in the left ventricle, it can also occur in the right ventricle. Cardiac Remodeling, Ventricular,Left Ventricular Remodeling,Myocardial Remodeling, Ventricular,Left Ventricle Remodeling,Ventricle Remodeling,Cardiac Remodelings, Ventricular,Left Ventricle Remodelings,Left Ventricular Remodelings,Myocardial Remodelings, Ventricular,Remodeling, Left Ventricle,Remodeling, Left Ventricular,Remodeling, Ventricle,Remodeling, Ventricular,Remodeling, Ventricular Cardiac,Remodeling, Ventricular Myocardial,Remodelings, Left Ventricle,Remodelings, Left Ventricular,Remodelings, Ventricle,Remodelings, Ventricular,Remodelings, Ventricular Cardiac,Remodelings, Ventricular Myocardial,Ventricle Remodeling, Left,Ventricle Remodelings,Ventricle Remodelings, Left,Ventricular Cardiac Remodeling,Ventricular Cardiac Remodelings,Ventricular Myocardial Remodeling,Ventricular Myocardial Remodelings,Ventricular Remodeling, Left,Ventricular Remodelings,Ventricular Remodelings, Left
D032383 Myocytes, Cardiac Striated muscle cells found in the heart. They are derived from cardiac myoblasts (MYOBLASTS, CARDIAC). Cardiomyocytes,Muscle Cells, Cardiac,Muscle Cells, Heart,Cardiac Muscle Cell,Cardiac Muscle Cells,Cardiac Myocyte,Cardiac Myocytes,Cardiomyocyte,Cell, Cardiac Muscle,Cell, Heart Muscle,Cells, Cardiac Muscle,Cells, Heart Muscle,Heart Muscle Cell,Heart Muscle Cells,Muscle Cell, Cardiac,Muscle Cell, Heart,Myocyte, Cardiac

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