Ran Joo Choi, Eun Myoung Shin, Tran Minh Ngoc, Ki Hwan Bae, Yeong Shik Kim
언어
영어(ENG)
URL
https://www.earticle.net/Article/A192663
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원문정보
초록
영어
This study investigates the anti-inflammatory effects of several components isolated from Rheum tanguticum Maxim. (Polygonaceae). Previously, we found that 70 % ethanol extracts of Rheum Rhizoma (Rheum tanguticum, R. undulatum, R. palmatum, R. officinale, Rumex crispus) had anti-inflammatory properties on LPS-stimulated RAW 264.7 macrophages and carrageenan-induced paw edema model. Thus, we studied five anthraquinone derivatives isolated from Rheum tanguticum, including chrysophanol, chrysophanol-8-O-Glc, 2-methoxy-4-hydroxyanthraquinone-5-O-Glc, emodin, and physcion. Chrysophanol, chrysophanol-8-O-Glc, physcion and emodin inhibited nitric oxide (NO) production at micromolar concentrations in LPS-induced RAW 264.7 macrophages. Among these anthraquinones, emodin was found to be a potent inhibitor with its IC50 (the half maximal inhibitory concentration) value of 57.23 μM. In addition, these four compounds dose-dependently reduced inducible nitricoxide synthase (iNOS) and cyclooxygenase-2 (COX-2) protein expression conducted by Western blotting analysis. Taken together, our data suggest that chrysophanol, chrysophanol-8-O-Glc, physcion and emodin from R. tanguticum showed anti-inflammatory activities through their inhibition of iNOS and COX-2 expression. Emodin was already reported to exhibit anti-inflammatory effects especially on acute pacreatitis animal model (1-3). Therefore, the further study is required to clarify anti-inflammatory mechanism of emodin in detail.
저자
Ran Joo Choi [ Natural Products Research Institute, College of Pharmacy, Seoul National University ]
Eun Myoung Shin [ Natural Products Research Institute, College of Pharmacy, Seoul National University ]
Tran Minh Ngoc [ College of Pharmacy, Chungnam National University ]
Ki Hwan Bae [ College of Pharmacy, Chungnam National University ]
Yeong Shik Kim [ Natural Products Research Institute, College of Pharmacy, Seoul National University ]
Corresponding author
본 학회는 화학, 생화학, 분자생물학, 미생물학, 식품공학, 의학, 약학, 유전공학 및 생물공학, 환경 및 기타 공업 등 전 분야의 탄수화물관련 이론과 기술을 연구 발전시키고 산학협동을 통해 이를 보급하여 국내 관련 산업의 발전 및 국민생활의 과학화에 기여하고자 하며, 이러한 목표와 비젼의 실현을 위해 회원들이 적극적인 참여와 활동을 전개하고자 한다.