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Anti-Diabetic, Alcohol Metabolizing Enzyme, and Hepatoprotective Activity of Acer tegmentosum Maxim. Stem Extracts

산겨릅나무 줄기 추출물의 항당뇨, 알코올 대사 효소 및 간 보호 활성

  • Cho, Eun Kyung (Department of Food and Nutrition, College of Medical Life Sciences, Silla University) ;
  • Jung, Kyung Im (Department of Food and Nutrition, College of Medical Life Sciences, Silla University) ;
  • Choi, Young Ju (Department of Food and Nutrition, College of Medical Life Sciences, Silla University)
  • 조은경 (신라대학교 의생명과학대학 식품영양학과) ;
  • 정경임 (신라대학교 의생명과학대학 식품영양학과) ;
  • 최영주 (신라대학교 의생명과학대학 식품영양학과)
  • Received : 2015.08.12
  • Accepted : 2015.09.11
  • Published : 2015.12.31

Abstract

This study was carried out to investigate the antidiabetic, alcohol metabolism, anti-inflammatory, and hepatoprotective effects of Acer tegmentosum extracts (ATE). A. tegmentosum has been traditionally used as a folk medicine to treat hepatic disorders. The antioxidative activities of ATE were measured by using 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activity and superoxide (SOD) assay. DPPH radical scavenging and SOD activities of ATE were about 89% and 82.9% at $0.5{\mu}g/mL$, respectively. Alcohol dehydrogenase and acetaldehyde dehydrogenase activities were 118.0% and 177% at 2 mg/mL, respectively. ${\alpha}-Glucosidase$ inhibitory activity of ATE was 75% higher at $50{\mu}g/mL$ and remarkably increased in a dose-dependent manner. Nitric oxide productions in macrophage RAW 264.7 cells stimulated by lipopolysaccharide was reduced to 16.7% by addition of ATE at 1 mg/mL. ATE showed significant protective effects against tacrine-induced cytotoxicity in Hep G2 cells at $100{\mu}g/mL$. Based on our results, we conclude that ATE may be used as a major pharmacological agent and anti-diabetic, anti-hepatitis, and anti-inflammatory remedy.

본 연구에서는 간질환 치료제로 알려진 산겨릅나무 줄기 추출물의 새로운 기능성 소재로서의 개발을 위하여 생리활성을 탐색하였다. 산겨릅나무 열수 추출물의 총 페놀 함량은 198 mg tannic acid equivalents/g으로 나타났다. 항산화활성은 DPPH 및 SOD 활성 측정 방법을 이용하여 분석하였으며, 산겨릅나무 열수 추출물의 농도 0.5 mg/mL에서 각각 89%와 82%의 활성을 나타내었다. 산겨릅나무 추출물의 혈당 강하 효과는 ${\alpha}-glucosidase$ 활성 억제 효과를 측정하였으며, 추출물 $50{\mu}g/mL$ 농도에서 75%의 억제 효과를 나타내었다. 이러한 결과는 지금까지 항당뇨 소재로 사용된 약용작물보다 높은 항당뇨 효과가 있는 것으로 사료된다. 알코올 분해 효소 alcohol dehydrogenase 및 aldehyde dehydrogenase 활성 촉진 효과는 농도 의존적으로 증가하였으며 5 mg/mL 농도에서 각각 260%와 123%를 나타내었다. Lipopolysaccharide에 의하여 유도된 nitric oxide(NO) 합성은 1 mg/mL 농도의 산겨릅나무 추출물을 처리함으로써 NO 합성률이 16.7% 정도 감소하였다. 산겨릅나무 추출물이 tacrine으로 유도된 Hep G2 세포주에 대하여 유의한 보호 활성을 나타냈다. 이러한 결과들은 산겨릅나무 추출물이 우수한 항당뇨, 항염증 효과 및 간세포 보호 효과가 높은 것으로 나타나 기능성 소재로서의 활용 가능성을 확인하였다.

Keywords

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