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Literature DB >> 6214528

Myocardial cell heterogeneity in the human heart with respect to myosin ATPase activity.

Abstract

The PH sensitivity of the Ca2+-activated myosin ATPase in atrial, ventricular and conduction tissue of human hearts has been established. Heterogeneity with respect to ATPase activity is shown not only to exist between the atrial, the ventricular myocardium and the conduction system but also within both the ordinary atrial and ventricular myocardium and within the conduction system. These observations are related to the polymorphism of the myosin molecule and suggest that fibre types with different contractile properties co-exist in the human heart.

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Year: 1982 PMID： 6214528 DOI： 10.1007/bf01011858

Source DB: PubMed Journal: Histochem J ISSN： 0018-2214

40 in total

Myocardial cell heterogeneity in the human heart with respect to myosin ATPase activity.

1. ENZYME HISTOCHEMISTRY OF THE SINUS AND ATRIOVENTRICULAR NODES OF THE HUMAN HEART.

2. Correlation between cardiac muscle myosin ATPase activity and velocity of muscle shortening.

3. Comparative analysis of chicken atrial and ventricular myosins.

4. Fact and artifact in the histochemical procedure for myofibrillar ATPase.

5. Procedure for the histochemical demonstration of actomyosin ATPase.

6. Qualitative differences between actomyosin ATPase of slow and fast mammalian muscle.

7. Foetal myosin light chain in human ventricle.

8. Enzyme histochemical studies on the conducting system of the human heart.

9. Myosin types in human skeletal muscle fibers.

10. Myosin types and fiber types in cardiac muscle. I. Ventricular myocardium.

1. Distribution pattern of alpha and beta myosin in normal and diseased human ventricular myocardium.

Review 2. Heart anatomy and developmental biology.

3. Energetic changes of myocardium as an adaptation to chronic hemodynamic overload and thyroid gland activity.

4. Myosin types and fiber types in cardiac muscle. II. Atrial myocardium.