[Cellular mechanisms of impaired cardiac energetics in patients with dilated cardiomyopathy: decrease in
Kardiologiia
|May 1, 1992
Summary
Mitochondrial function in dilated cardiomyopathy (DCMP) patients shows decreased creatine-activated respiration correlates with disease severity. These mitochondrial respiratory parameters can assess cardiac lesion severity in DCMP.
Area of Science:
- Biochemistry
- Cardiology
- Mitochondrial Physiology
Context:
- Dilated cardiomyopathy (DCMP) is a significant cause of heart failure.
- Assessing cardiac function and disease progression is crucial for patient management.
- Mitochondrial dysfunction is implicated in the pathophysiology of heart failure.
Purpose:
- To evaluate mitochondrial functional characteristics in patients with varying functional classes of DCMP.
- To determine the correlation between mitochondrial respiration parameters and clinical indicators of DCMP severity.
Summary:
- Mitochondrial respiration was assessed in endomyocardial biopsy specimens from 39 DCMP patients.
- While maximum respiration rates were similar across functional classes, acceptor control index and creatine-activated respiration decreased with increasing DCMP severity.
- Creatine-stimulated respiration positively correlated with ejection fraction and negatively with end-diastolic pressures.
Impact:
- Mitochondrial respiratory parameters from endomyocardial biopsies can serve as biomarkers for assessing cardiac lesion severity in DCMP.
- This finding may lead to improved diagnostic tools and therapeutic strategies for dilated cardiomyopathy.
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