Biomolecules & Therapeutics

The Korean Society of Applied Pharmacology (한국응용약물학회)
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Antiplatelet and Antithrombotic Activities of Lindera obtusiloba Extract in vitro and in vivo

  • Lee, Jung-Ok (Research and Development Center, Hanwha Pharma. Co., Ltd.) ;
  • Kim, Chul-Young (Natural Product Research Center, KIST Gangneung Institute) ;
  • Lee, Seung-Woo (Research Center, YangJi Chemicals) ;
  • Oak, Min-Ho (Research and Development Center, Hanwha Pharma. Co., Ltd.)
  • Received : 2010.02.18
  • Accepted : 2010.04.15
  • Published : 2010.04.30
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Abstract

Several studies have shown that plant-derived polyphenols reduce cardiovascular accidents in high-risk patients and the inhibition of platelet function may be responsible for part of this benefit. Lindera obtusiloba is widely used in traditional herbal medicine for the treatment of cardiovascular and inflammatory diseases. Therefore, the antiplatelet and antithrombotic activities of Lindera obtusiloba Extracts (LOE) on in vitro platelet aggregation, radical scavenging activity and in vivo murine pulmonary thrombosis were examined. LOE was able to directly scavenge the stable DPPH radical in a concentration-dependent manner and its $IC_{50}$ value was 3.9 ${\pm}$ 0.1 ${\mu}g$/ml. LOE significantly inhibited collagen- and ADP-induced platelet aggregation in a concentration-dependent manner and its $IC_{50}$ value is 0.9 ${\pm}$ 0.1 mg/ml and 0.4 ${\pm}$ 0.1 mg/ml respectively. The inhibitory effect of LOE was comparable to aspirin ($IC_{50}$ values were 1.0 ${\pm}$ 0.5 and 1.0 ${\pm}$ 0.7 mg/ml, respectively). Furthermore, oral administration of LOE suppressed the death of mice with pulmonary thrombosis induced by intravenous injection of collagen plus epinephrine. Taken together, our results suggest LOE may be a promising candidate for antithrombotic agent, and the antithrombotic effect of LOE may be due to, at least in part, antiplatelet activity.

본 논문은 체내외 실험에서 생강 나무 추출물 (LOE)의 항혈소판과 항혈전 활성에 대한 내용으로 주요 내용은 다음과 같다. 생강 나무는 심혈관과 염증성 질환에 사용되는 전통 약초이다. LOE의 항혈소판과 항혈전 활성은 체외 실험으로 혈소판 응집과 라디칼 소거 활성을 관찰하였고, 체내 실험으로 폐동맥 혈전증을 관찰하였다. LOE는 농도 의존적으로 $IC_{50}$ 값이 3.9 ${\pm}$ 0.1 ${\mu}g$/ml인 안정된 DPPH 라디칼을 소거하였고, $IC_{50}$ 값이 0.9 ${\pm}$ 0.1 mg/ml와 0.4 ${\pm}$ 0.1 mg/ml인 콜라겐-유도 혈소판 응집과 ADP-유도 혈소판 응집을 농도 의존적으로 저해하였다. LOE의 저해 효과는 $IC_{50}$ 값이 1.0 ${\pm}$ 0.5와 1.0 ${\pm}$ 0.7 mg/ml인 아스피린과 비교하였다. LOE의 경구 투여는 콜라겐과 에피네프린의 정맥 주사로 유도된 폐동맥 혈전증을 가진 생쥐 사망을 억제하였다. 따라서 LOE는 항혈소판 활성에 기인하는 항혈전제 이다는 내용이다.

Keywords

References

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