Population
Bovine myocardium
Comparison
Actin filament-reconstituted myocardium without… vs Control bovine myocardium exposed to the same…
Design
Preclinical
Key result
In bovine myocardium, regulatory proteins tropomyosin and troponin augmented the temperature dependence of isometric tension, indicating they may modify the actomyosin interaction.
Authors
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Does not support clinical changes in myocardial contractility; leaves open regulatory protein effects on temperature sensitivity in human myocardium.
Regulatory proteins tropomyosin and troponin augment the temperature dependence of isometric tension in bovine myocardium, suggesting they modify actomyosin interaction.
Fujita et al. (2002) studied this question. Temperature variation and regulatory proteins (tropomyosin and troponin) vs. Myocardium without regulatory proteins was evaluated on Isometric tension and apparent rate constants. In bovine myocardium, regulatory proteins tropomyosin and troponin augmented the temperature dependence of isometric tension, indicating they may modify the actomyosin interaction.