The acute effect of simvastatin on aortic rings from spontaneously hypertensive rats (SHRs) was identified. Simvastatin-evoked relaxations of both depolarized and phenylephrine-precontracted arteries were independent of the presence of endothelium. This effect was inhibited by diltiazem and mevalonate, but not by the Rho-kinase inhibitor, Y-27632. Simvastatin prevented contraction induced by phenylephrine, calcium ionophore A-23187 and CaCl2 in Ca2+- free medium. Y-27632 decreased the effect of simvastatin. On the contrary, contraction induced by noradrenaline in Ca2+- free medium was not affected. These results suggest that simvastatin elicited an effect on vascular smooth muscle cells from SHRs that may involve blockade of extracellular calcium entry and decrease vascular contraction by affecting Rho-kinase. Copyright (C) 2005 S. Karger AG, Basel.
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Korea Food Res Inst, Food Fus & Complex Res Div, Songnam 463746, Kyongki Do, South KoreaKorea Food Res Inst, Food Fus & Complex Res Div, Songnam 463746, Kyongki Do, South Korea
Pak, Valeriy V.
Koo, Minseon
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Korea Food Res Inst, Food Fus & Complex Res Div, Songnam 463746, Kyongki Do, South KoreaKorea Food Res Inst, Food Fus & Complex Res Div, Songnam 463746, Kyongki Do, South Korea
Koo, Minseon
Kim, Min Jung
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Korea Food Res Inst, Food Fus & Complex Res Div, Songnam 463746, Kyongki Do, South KoreaKorea Food Res Inst, Food Fus & Complex Res Div, Songnam 463746, Kyongki Do, South Korea
Kim, Min Jung
Yang, Hye Jeong
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Korea Food Res Inst, Food Fus & Complex Res Div, Songnam 463746, Kyongki Do, South KoreaKorea Food Res Inst, Food Fus & Complex Res Div, Songnam 463746, Kyongki Do, South Korea
Yang, Hye Jeong
Yun, Lyubov
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Inst Chem Plant Subst, Dept Organ Synth, Tashkent 700170, UzbekistanKorea Food Res Inst, Food Fus & Complex Res Div, Songnam 463746, Kyongki Do, South Korea
Yun, Lyubov
Kwon, Dae Young
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Korea Food Res Inst, Food Fus & Complex Res Div, Songnam 463746, Kyongki Do, South KoreaKorea Food Res Inst, Food Fus & Complex Res Div, Songnam 463746, Kyongki Do, South Korea