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Antioxidant and Anti-inflammatory Activities of Atractylodes japonica According to Extract Methods

백출 용매추출 방법에 따른 항산화 활성 및 항염증 효과

  • Oh, Hee-Kyung (Department of Bio-animal care, Jangan University)
  • 오희경 (장안대학교 건강과학부 바이오동물보호과)
  • Received : 2021.11.30
  • Accepted : 2021.12.27
  • Published : 2021.12.30

Abstract

Atractylodes japonica has been widely used in a traditional Korean herbal medicine exerting various pharmacological activities such as diauretic action, asriction, anti-allergy, neuroprotective activity, anti-cancer, immunomodulation and gastrointestinal protective effect. This study was to investigate the antioxidant, nitric oxide and inflammatory cytokines production of A. japonica extract by water and 70% ethanol. DPPH and ABTS free radical scavenging activity were increased in a dose-dependent manners with both extracts and there was no difference with extract solvents. 70% ethanol extract of A. japonica showed a very strong inhibitory effect on NO production. Both extracts of A. japonica significantly reduce the expression of iNOS and COX-2 proteins involved in NO prodction. A. japonica extract by water and 70% ethanol inhibited LPS-induced proinflammatory cytokines such as IL-6 and IL-1b. In this study, 70% ethanol extract of A. japonica significantly suppresses LPS-induced NO and inflammatory cytokine production. Therefore it can be widely used to treat and improve inflammatory diseases.

백출(Atractylodes japonica)은 국화과(Compositae)에 속하는 다년생 식물로 한국에서 이뇨작용, 수렴작용, 항알러지, 신경보호, 항암, 면역증강 및 위장관 보호효과 등으로 민간요법에서 널리 사용되고 있다. 백출의 열수 및 70% 에탄올 추출물에 대한 DPPH 및 ABTS 자유라디칼 소거능으로 항산화 활성을 측정하였다. 게다가 NO 생성, iNOS와 COX-2 단백질 발현을 웨스턴 블롯으로 측정하였으며, 염증성 사이토카인의 발현을 RT-PCR 방법으로 측정함으로 항염증 효과를 측정하였다. 열수 및 70% 에탄올 추출물들의 항산화 활성은 농도-의존적인 효과를 보였지만, 추출용매에 따른 차이는 나타나지 않았다. 70% 에탄올에 의한 백출 추출물에서 매우 강한 NO 활성 억제효과를 보였다. 백출 열수 및 에탄올 추출물은 NO 생성에 관여하는 iNOS 및 COX-2 단백질의 발현을 현저히 감소시켰다. 열수 및 70% 에탄올 추출물 모두 염증성 사이토카인인 IL-6 및 IL-1b는 현저히 억제시키지만, TNF-α의 발현은 약하게 억제시키는 결과를 얻었다. 본 연구를 통하여 백출 70% 에탄올 추출물이 NO 생성을 현저히 억제하며, 염증성 사이토카인의 발현을 현저히 감소시키는 효과를 보이므로 염증성 질환 치료 및 개선에 널리 사용될 수 있으리라 생각한다.

Keywords

Acknowledgement

본 연구는 2021년 장안대학교 연구비로 이루어진 연구로 이에 감사를 표합니다.

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