Cardiology

Novel dual stem cell therapy improving cardiac regeneration

As a medical emergency caused by severe cardiovascular diseases, myocardial infarction (MI) can inflict permanent and life-threatening damage to the heart. A joint research team comprising scientists from City University ...

Cardiology

New stem cell combination could help to repair damaged hearts

A combination of heart cells derived from human stem cells could be the answer to developing a desperately-needed treatment for heart failure, according to new research part-funded by the British Heart Foundation (BHF) and ...

Cardiology

Autopsies reveal how meth hurts the heart

Use of the illegal stimulant methamphetamine causes build-up of tough protein fibers in heart muscle, which may help explain the development of enlarged hearts and heart failure in users, according to preliminary research ...

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Cardiac muscle

Cardiac muscle is a type of involuntary striated muscle found in the walls of the heart, specifically the myocardium. Cardiac muscle cells are known as cardiac myocytes (or cardiomyocytes). Cardiac muscle is one of three major types of muscle, the others being skeletal and smooth muscle. The cells that comprise cardiac muscle are sometimes seen as intermediate between these two other types in terms of appearance, structure, metabolism, excitation-coupling and mechanism of contraction. Cardiac muscle shares similarities with skeletal muscle with regard to its striated appearance and contraction, with both differing significantly from smooth muscle cells.

Coordinated contraction of cardiac muscle cells in the heart propel blood from the atria and ventricles to the blood vessels of the circulatory system. Cardiac muscle cells, like all tissues in the body, rely on an ample blood supply to deliver oxygen and nutrients and to remove waste products such as carbon dioxide. The coronary arteries fulfill this function.

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