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- W1997277510 abstract "Ca 2+ -sensitizers are inotropic agents that modify the response of myofilaments to Ca 2+, and are potentially valuable drugs in the treatment of heart failure. These agents have diverse chemical structures, and in some cases also have effects as inhibitors of phosphodiesterase activity. Advantages of their actions include vasodilation combined with inotropic effects. Reduction in the amounts of Ca 2+ required to activate the myofilaments also lowers the oxygen consumption required for Ca 2+ transport, lowers the threat of arrhythmias, and may blunt Ca 2+ -dependent transcriptional and translational mechanisms leading to hypertrophy and failure. Although diastolic abnormalities and impaired relaxation were thought to be potential undesirable effects of Ca 2+ -sensitizers, studies of hearts beating in situ indicate that this may not be a major problem. We focus here on Ca 2+ -sensitizers that act on cardiac troponin C, the Ca 2+ receptor that triggers activation of the actin-myosin interaction. Structural studies have identified a unique mode of Ca 2+ signaling in cardiac troponin C that should aid in targeting drugs to the heart. Moreover, identification of docking sites of Ca 2+ -sensitizers on troponin C suggest new directions for rational drug design." @default.
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- W1997277510 date "2002-01-01" @default.
- W1997277510 modified "2023-10-18" @default.
- W1997277510 title "Molecular actions of drugs that sensitize cardiac myofilaments to Ca 2+" @default.
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- W1997277510 doi "https://doi.org/10.1080/078538902320322510" @default.
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