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The Endothelium-Dependent Vasorelaxation Effect of Cynomorii Herba
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  • Journal title : The Korea Journal of Herbology
  • Volume 30, Issue 6,  2015, pp.25-32
  • Publisher : The Korea Association of Herbology
  • DOI : 10.6116/kjh.2015.30.6.25.
 Title & Authors
The Endothelium-Dependent Vasorelaxation Effect of Cynomorii Herba
Park, Sun-Young;
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Objectives : The purpose of this study was to investigate the endothelium-dependent vasorelaxation effect of Cynomorii Herba(CH) extract on contracted rabbit carotid artery.Methods : To clarify the vasorelaxation effect of CH extract, arterial strips with intact was used, to endothelium -dependent vasorelaxation effect of CH extract, arterial strips damaged endothelium was used for experiment using organ bath. Arterial strips was contracted with phenylephrine(PE) before treated with CH extract(0.01, 0.03 and 0.1 ㎎/㎖). To study mechanisms of CH-induced vasorelaxation effect, CH extract infused into arterial rings after treatment by indomethacin(IM), tetraethylammonium chloride(TEA), Nω-nitro-L-arginine (L-NNA), methylene blue(MB) for comparing with non-treated. And calcium chloride(Ca2+) 1 mM was treated into precontracted arterial ring induced by PE after treatment of CH extract in Ca2+-free krebs solution. Cytotoxic activity of CH extract on human umbilical vein endothelial cell(HUVEC) was measured by MTT assay, and nitric oxide(NO) concentration was measured by Griess reagent.Results : PE-induced arterial strips was significantly relaxed, but the damaged endothelium arterial ring wasn`t relaxed by CH extract. Pretreatment of IM, TEA didn`t inhibit the vasorelaxation of CH extract, but pretreatment of L-NNA, MB inhibited the vasorelaxation of CH extract. Pretreatment of CH extract reduced the increase of contraction by influx of extracellular Ca2+ in contracted arterial ring induced by PE, CH extract increased nitric oxide concentration on HUVEC significantly.Conclusions : This study shows that CH extract have the vasorelaxation effect by blocking the influx of extracellular Ca2+ through the activating NO-cGMP system.
Cynomorii Herba;vasorelaxation effect;nitric oxide;cyclic GMP;
 Cited by
발기부전 처방에 사용되는 쇄양(鎖陽)이 음경해면체 이완에 미치는 영향,신선미;박선영;

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