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[Cardiac insufficiency and its morphological expression]
Insights
Cardiac insufficiency involves diverse myocardial pathologies, not a single cause. Acute cardiac incompetence shows irreversible mitochondrial changes in myocytes, indicating severe heart muscle damage.
Area of Science:
- Cardiovascular Morphology
- Pathophysiology
- Cellular Biology
Context:
- Current understanding of cardiac insufficiency lacks a unified morphological perspective.
- Myocardial morphology in heart failure is complex and varies with underlying conditions.
- Experimental models are crucial for elucidating cellular changes in cardiac dysfunction.
Purpose:
- To characterize the current morphological views on cardiac insufficiency.
- To investigate ultrastructural changes in the myocardium during experimental myocardial infarction and developing cardiac incompetence.
- To identify potential markers of irreversible myocardial damage.
Summary:
- Cardiac insufficiency presents diverse pathogenetic mechanisms, challenging a singular approach.
- Ultrastructural analysis of rabbit myocardium post-myocardial infarction revealed significant myocyte changes.
- The presence of calcium phosphate-rich bodies within mitochondria signifies irreversible damage in acute cardiac incompetence.
Impact:
- Highlights the heterogeneity of cardiac insufficiency pathogenesis.
- Identifies specific ultrastructural alterations as indicators of irreversible myocardial injury.
- Informs future research on targeted therapeutic strategies for heart failure based on distinct morphological profiles.
Abstract:
The paper sets forth materials reflecting the present-day views of morphologists concerning the problem of cardiac insufficiency. The current state of the problem relating to morphology of the myocardium in cardiac incompetence is characterized. It is suggested that cardiac incompetence cannot be approached as a unique issue, and in different affections the pathogenesis of the heart muscle debility may prove to be dissimilar. Ultrastructural changes in the left heart myocardium of the rabbit, at a distance from the ischemic area, in experimental myocardial infarction at the stage of compensatory hypertrophy and with developing acute cardiac incompetence are described. In the lastly named case the mitochondria of myocites were found to contain compact bodies, apparently made up of calcium phosphate. Their appearance comes as a proof of irreversibility of the supervened changes.