Journal of Pharmacological Sciences
Online ISSN : 1347-8648
Print ISSN : 1347-8613
Short Communications
Propyl Gallate, a Strong Antioxidant, Increases the Ca2+ Sensitivity of Cardiac Myofilament
Naoto TadanoSachio MorimotoFumi Takahashi-YanagaYoshikazu MiwaIwao OhtsukiToshiyuki Sasaguri
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2009 Volume 109 Issue 3 Pages 456-458


Ca2+ sensitizers are cardiotonic agents that directly increase the Ca2+ sensitivity of cardiac myofilament. To find a novel Ca2+ sensitizer, we have screened a group of phenolic compounds by examining their effects on the Ca2+-dependent force generation in cardiac muscle fibers. We found that propyl gallate, a strong antioxidant, increased the Ca2+ sensitivity of cardiac myofilament in a dose-dependent and reversible manner. The present study indicates that propyl gallate is a novel type of Ca2+ sensitizer with antioxidant activity, which might be more beneficial for the treatment of congestive heart failure associated with oxidative stress than existing Ca2+ sensitizers.

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© The Japanese Pharmacological Society 2009
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