Study on the Vasorelaxant Mechanism of the Butanol Extract of Euonymus alatus

귀전우(鬼箭羽) 부탄올 추출물의 혈관이완 기전에 대한 연구

  • Li, Xiang (Professional Graduate School of Oriental Medicine, Wonkwang University) ;
  • Kang, Dae-Gill (Professional Graduate School of Oriental Medicine, Wonkwang University) ;
  • Lee, Jun-Kyoung (Professional Graduate School of Oriental Medicine, Wonkwang University) ;
  • Kim, Seung-Ju (Korea Institute of Oriental Medicine) ;
  • Choi, Deok-Ho (Professional Graduate School of Oriental Medicine, Wonkwang University) ;
  • Lee, Kye-Bok (Professional Graduate School of Oriental Medicine, Wonkwang University) ;
  • Cui, Hao-Zhen (Professional Graduate School of Oriental Medicine, Wonkwang University) ;
  • Yeom, Ki-Bok (Professional Graduate School of Oriental Medicine, Wonkwang University) ;
  • Lee, Ho-Sub (Professional Graduate School of Oriental Medicine, Wonkwang University)
  • 리향 (원광대학교 한의학전문대학원) ;
  • 강대길 (원광대학교 한의학전문대학원) ;
  • 이준경 (원광대학교 한의학전문대학원) ;
  • 김승주 (한국 한의학 연구원) ;
  • 최덕호 (원광대학교 한의학전문대학원) ;
  • 이계복 (원광대학교 한의학전문대학원) ;
  • 최호진 (원광대학교 한의학전문대학원) ;
  • 염기복 (원광대학교 한의학전문대학원) ;
  • 이호섭 (원광대학교 한의학전문대학원)
  • Published : 2008.02.25

Abstract

The butanol extract of Euonymus alatus (BEA) induced dose-dependent relaxation of phenylephrine-precontracted aorta, which was abolished by removal of functional endothelium. Pre-treatment of the endothelium-intact aortic tissues with $N^G-nitro-L-arginine methylester$ (L-NAME), and 1 H-[1,2,4]-oxadiazole- [$4,3-{\alpha}$]-quinoxalin-1-one (ODQ) inhibited the relaxation induced by BEA, respectively. BEA-induced vascular relaxation was not blocked by glibenclamide, tetraethylammonium (TEA), indomethacin, atropine, propranolol, verapamil, and diltiazem, respectively. Moreover, BEA inhibits phenylephrine-induced vascular constriction in a dose-dependent manner. These results suggest that BEA relaxes vascular smooth muscle via endothelium-dependent nitric oxide/cGMP signaling.

Keywords

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