좀민들레(Taraxacum hallaisanense Nakai) 추출물의 항산화 및 항염증 활성 효과
Antioxidant and Anti-inflammatory Effects ofTaraxacum hallaisanense Nakai Extracts
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본 논문은 가축의 면역 증진을 위한 천연 첨가제로서 좀민들레의 활용 가능성을 검토하고자 항산화 및 항염증 활성 평가를 실시하였다. 총 폴리페놀 및 플라보노이드 함량은 94.95, 86.33 mg/g으로 나타났고 DPPH, ABTS radical 소거능은 각각 100, 200 µg/mL의 농도에서 50%의 억제율을 보였으며, 1000 µg/mL에서 50%의 환원력을 나타냈다. LPS와 함께 처리한 Raw 264.7 cell에서는 좀민들레에 의한 세포 독성이 나타나지 않았으며 염증 매개 인자 NO와 염증성 사이도카인 IL-1β의 생성량을 유의하게 감소시켰다. 또한 염증성 단백질 발현량을 측정하기 위해 western blotting을 통해 확인한 결과, 400 µg/mL으로 처리하였을 때 LPS 처리구에 비해 염증성 단백질 발현 수준을 유의하게 감소시킨 것으로 확인되었다. 본 연구 결과, 좀민들레 추출물은 세포에 대한 독성이 없이 유의한 항산화 활성과 항염증 활성을 나타냄으로써 가축의 질병예방을 위한 면역 증진 및 생산성 향상에 기여할 수 있는 안전한 대체 천연 첨가제로 이용될 수 있다고 생각된다.
Abstract
Taraxacum hallaisanense (pr), a species of the family Compositae is a perennial herb plants that inhabit to Jeju Island. In the study, we performed to determine the anti-inflammatory effects in LPS-induced RAW 264.7 cells and antioxidant activity of ethanol extracts from T. hallaisanense whole plants. The antioxidant activity of extracts was measured by contents of polyphenol and flavonoid, DPPH radical scavenging, and reducing power activity. The anti-inflammatory effect of T. hallaisanense extracts was measured by NO and IL-1β production inhibitory activity and the expression of pro-inflammatory in lipopolysaccharide (LPS)- induced Raw 264.7 cells. Also, the expression of pro-inflammatory genes such as iNOS, COX-2 and NF-kB protein were reduced. In the cytotoxicity measurement by cytotoxicity kit, the extract was exhibited Raw 264.7 cell viabilities as nontoxic result in concentration of 25~400 µg/ml. These results indicated that ethanol extracts of T. hallaisanense whole plants expected development possibility as nutrial additives through high anti-inflammatory effects and antioxidant activity.
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