대한한의학회지 (The Journal of Korean Medicine)

  • 제22권2호
  • /
  • Pages.3-9
  • /
  • 2001
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  • 1010-0695(pISSN)
  • /
  • 2288-3339(eISSN)
대한한의학회 (The Society of Korean Medicine)
권호 표지

한약재들의 안지오텐신 전환효소 억제 작용 검색

In vitro Screening of Oriental Medicinal Plants for Inhibitory Effects on Angiotensin-converting Enzyme

  • 강대길 (원광대학교 한의학전문대학원 신약개발학과) ;
  • 오현철 (원광대학교 한의학전문대학원 신약개발학과) ;
  • 손은진 (원광대학교 한의학전문대학원 신약개발학과) ;
  • 권태오 (원광대학교 생명자원과학대학) ;
  • 이호섭 (원광대학교 한의학전문대학원 신약개발학과)
  • 발행 : 2001.06.01
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초록

국내에서 많이 사용되는 한약재 51종을 극성에 따라 4가지 용매로 분획한 후 안지오텐신 전환 요소 활성도 억제를 검색한 결과 다음과 같은 결과를 얻었다. 1. 202종의 분획중 $400{\;}\mu\textrm{g}/ml$의 농도에서 안지오텐신 전환효소 활성도를 50% 이상 억제한 추출물 수는 26종이었고, 90% 이상 억제한 추출물 수는 4종이었다. 2. 대부분 추출물의 $IC_{50}$ 수치는 $300-400{\;}\mu\textrm{g}/ml$ 이었으나 택사의 물층, 황련의 buthanol, 물 추출물과 단삼의 ethylacetate, buthanol 추출물, 토사자의 ethylacetate 추출물 등은 6종의 추출물은 $200{\;}\mu\textrm{g}/ml$ 이하의 $IC_{50}$을 보였다. 이상과 같은 결과로 보아 많은 한약재들의 항고혈압 효과는 부분적으로 안지오텐신 전환효소를 억제하는 효과에 의한 것으로 여겨진다.

Objective : Oriental medicinal plants reported to be used as anti-hypertensive drugs have been in vitro screened for inhibitory effects on angiotensin-converting enzyme (ACE). Methods : The bioassay is based on inhibition of plasma angiotensin-converting enzyme, as measured from the enzymatic cleavage of the Hip-His-Leu substrate into His-Leu. The plant material is extracted with hexane, ethylacetate, n-buthanol and water separately. Results : In total, 51 species (202 extracts) have been investigated and $400{\;}\mu\textrm{g}/ml$ of the solvent extracts from 26 extracts inhibit the enzyme activities by more than 50%. Among them, four samples of two plant species (buthanol and ethylacetate extracts of Salvia miltiorrhiza and buthanol and water extracts of Jeffersonia dubia) were found to posses a high ACE inhibition ability more than 90%. Conclusion : These results suggested that many Oriental medicinal plants have a antihypertensive effects by inhibition of ACE.

키워드

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