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Skeletal MLCK detection in human myocardium leaves open its role in dilated cardiomyopathy; does not support clinical adoption or practice change.
Skeletal myosin light chain kinase in the myocardia of various animal species was identified by immunoblotting. The myocardial concentrations of this protein and myosin-activating protein kinases (RhoA-activated kinase, integrin-linked kinase, and zipper-interacting kinase) were compared in healthy humans and patients with dilated cardiomyopathy. Skeletal myosin light chain kinase was detected in the human and chicken embryo hearts, rather than in the embryonic and adult rat hearts. In the myocardium of patients with dilated cardiomyopathy, the concentrations of myosin light chain kinase, RhoA-activated kinase, and integrin-linked kinase increase and the concentration of zipper-interacting kinase decreases. The results obtained are likely to characterize compensatory processes in cardiomyocytes in dilated cardiomyopathy that are aimed at increasing their viability and contractility.
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Чадин et al. (2006) studied this question.
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