Despite being mainly composed of terminally differentiated myocytes that cannot re-enter the cell cycle, the heart is not a postmitotic organ and maintains some capacity to form new parenchymal ...

Only cardiac muscle tissue, comprising cells called myocytes, is present in the heart. In this article, we discuss the structure and function of cardiac muscle tissue. We also cover medical ...

This is a major problem for cardiac myocytes, which rely on the energy produced by mitochondria to contract. Additionally, the body cannot replace these particular cells because they do not divide.

Adult rat cardiac myocyte: The protein alpha-actinin (red) reveals the periodic structure of the myofibril. Two nuclei are stained in blue. Disclaimer: AAAS and EurekAlert! are not responsible for ...

B-type natriuretic peptide is released by cardiac myocytes in response to wall stretch. There are many hemodynamic effects of BNP which are beneficial in the setting of decompensated congestive ...

A variety of preclinical and clinical studies using different cell types have demonstrated variable degrees of improvement in cardiac function in models of acute myocardial infarction (MI ...

Intracellular calcium within the cardiac myocytes is increased by digoxin, resulting in increased inotropy, or contractility. Digoxin toxicity causes hyperkalemia, or high potassium. The sodium ...