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Non‐technical summary Myocardial stretch increases force in two phases. The first one is immediate and attributed to an increase in myofilament Ca2+ responsiveness (Frank–Starling mechanism). The second phase gradually develops and is known as slow force response (SFR) or Anrep effect due to an increase in intracellular Ca2+ transient. We previously showed that Ca2+ entry through reverse Na+/Ca2+...
Myocardial stretch elicits a biphasic contractile response: the Frank–Starling mechanism followed by the slow force response (SFR) or Anrep effect. In this study we hypothesized that the SFR depends on epidermal growth factor receptor (EGFR) transactivation after the myocardial stretch‐induced angiotensin II (Ang II)/endothelin (ET) release. Experiments were performed in isolated cat papillary muscles...
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