To save energy and precisely regulate cardiac contractility, cardiac muscle myosin heads are sequestered in an ‘off’ state that can be converted to an ‘on’ state when exertion is increased. The ‘off’ ...

The heartbeat results from interactions between myosin and actin, which are present in the heart as organized arrays of protein filaments that slide past each other to produce contraction. After each ...

Researchers have investigated the effect of increased cell temperature on the contractility of skeletal muscle and cardiac muscle by heating the muscle proteins using advanced microscopical techniques ...

Valsartan, an angiotensin II receptor blocker drug, delayed disease progression and improved cardiac structure and function in patients with early-stage hypertrophic cardiomyopathy, according to ...