Key result
Ouabain potentiates contraction in cardiac and skeletal muscle cells by promoting calcium release from the intracellular sarcoplasmic reticulum.
Why the study?
Does ouabain potentiate contraction by increasing calcium release from the sarcoplasmic reticulum in cardiac and skeletal muscle cells?
Population
Cardiac and skeletal muscle cells and fragmented sarcoplasmic reticulum from various species
Comparison
Ouabain vs Control conditions
Design
Preclinical
Authors
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Animal data link ouabain to SR calcium release for contractility; leaves open human relevance and safety.
Does ouabain potentiate contraction by increasing calcium release from the sarcoplasmic reticulum in cardiac and skeletal muscle cells?
Ouabain exerts its positive inotropic effect by potentiating calcium release from the sarcoplasmic reticulum rather than affecting calcium influx.
Fujino et al. (1982) studied this question. Ouabain was evaluated on Ca release from sarcoplasmic reticulum and potentiation of contraction. Ouabain potentiates contraction in cardiac and skeletal muscle cells by promoting calcium release from the intracellular sarcoplasmic reticulum.
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