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Antithrombotic Effect and Antiplatelet Activity of Polygonum cuspidatum Extract

호장근 추출물의 항혈전 효능 및 혈소판 응집 억제작용

  • Yang, Won-Kyung (Basic Herbal Medicine Research Group, Korea Institute of Oriental Medicine) ;
  • Sung, Yoon-Young (Basic Herbal Medicine Research Group, Korea Institute of Oriental Medicine) ;
  • Kim, Ho-Kyoung (Basic Herbal Medicine Research Group, Korea Institute of Oriental Medicine)
  • 양원경 (한국한의학연구원 한약기초연구그룹) ;
  • 성윤영 (한국한의학연구원 한약기초연구그룹) ;
  • 김호경 (한국한의학연구원 한약기초연구그룹)
  • Received : 2011.10.17
  • Accepted : 2012.01.06
  • Published : 2012.02.29

Abstract

We performed this study to develop antithrombotic agents from oriental medicine herb extracts. Polygonum cuspidatum has been traditionally used as an edible medical resources for the treatment of cancer, pyodermatitis, hepatitis, cystitis, and inflammation. However, the effects of Polygonum cuspidatum on thrombosis and platelet activation are not precisely understood. The antithrombotic and antiplatelet activities of Polygonum cuspidatum were investigated by assessing the effect of a 70% ethanol extract of Polygonum cuspidatum on blood coagulation, fibrinolysis, and platelet aggregation. Polygonum cuspidatum showed effective fibrinolytic activity at 10 mg/mL. Polygonum cuspidatum also inhibited adenosine diphosphate induced platelet aggregation. Furthermore, evaluation of anticoagulant activity showed that an extract of Polygonum cuspidatum prolonged coagulation time via activated partial thromboplastin time (APTT). Our results show that Polygonum cuspidatum can be a potential candidate for antiplatelet activity as well as a fibrinolytic agent.

항혈전 효능을 탐색하기 위하여 한약재의 호장근 추출물로 혈전 용해능 활성과 혈액 응고시간 지연효과 즉 PT(prothrombin time), APTT(activated partial thromboplastin time)와 혈소판 응집억제 활성 등에 대해 항혈전 효능을 평가하였다. 혈전용해도를 측정하는 fibrin plate가 용해되어 형성된 투명환의 넓이를 측정하는 실험을 진행한 결과 혈전 용해도가 농도의존적으로 탁월한 효능을 나타내었다. 혈액응고 cascade에 미치는 영향을 알아보기 위해 혈액 응고시간 지연 및 단축 효과를 확인하고자 APTT와 PT에 미치는 영향을 조사한 결과 PT의 경우 대조군보다 단축됨을 보였다. APTT의 경우 농도의존적으로 우수한 지연효과를 보였다. 혈소판의 응집에 따라 형성되는 두 전극 사이에 형성된 전기적 저항의 변화로 나타나는 실험을 시행한 결과 호장근의 ADP로 유도한 결과에서 뛰어난 응집억제 활성을 보였다. 따라서 호장근을 향후에 혈전 질환의 치료제 개발에 효과적으로 이용될 수 있을 것으로 사료된다.

Keywords

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