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Effects of Oleanolic Acid and Hederagenin on Acute Alcohol-Induced Hepatotoxicity in Mice

마우스에서 Oleanolic Acid와 Hederagenin이 급성 알코올성 간독성에 미치는 효과

  • Jung, Suhan (Division of Biotechnology, College of Life Sciences and Biotechnology, Korea University) ;
  • Lee, Sanghoon (Department of Nutritional Science and Food Management, College of Health Science, Ewha Womans University) ;
  • Ko, Kwang Suk (Department of Nutritional Science and Food Management, College of Health Science, Ewha Womans University)
  • 정수한 (고려대학교 생명과학대학 생명공학과) ;
  • 이상훈 (이화여자대학교 건강과학대학 식품영양학과) ;
  • 고광석 (이화여자대학교 건강과학대학 식품영양학과)
  • Received : 2015.11.06
  • Accepted : 2015.11.27
  • Published : 2016.03.31

Abstract

We studied the effects of oleanolic acid and hederagenin on acute alcohol-induced hepatotoxicity in mice. Oleanolic acid [10 and 20 mg/kg body weight (BW)/d] or hederagenin (10 and 20 mg/kg BW/d) was orally administered to the study group for 1 week. On the last day of treatment, ethanol (5 g/kg BW) was orally administered to induce acute liver injury. The oleanolic acid-treated group showed lower levels of alanine aminotransferase compared to the ethanol-treated group (EtOH). The mRNA expression level of alcohol dehydrogenase was significantly increased in the high dosage oleanolic acid-treated group compared with the control and EtOH groups. The glutathione levels of the oleanolic acid or hederagenin-treated groups were elevated significantly compared with those of the control and EtOH groups. The mRNA expression levels of glutathione synthetic enzymes were also elevated in the oleanolic acid-treated groups. The oleanolic acid or hederagenin-treated groups also showed lower levels of mRNA expression of tumor necrosis factor alpha. Thus, these results show that oleanolic acid and hederagenin could reduce oxidative stress and hepatotoxicity in ethanol-treated mouse liver.

본 연구는 선행연구를 통한 으름 추출물의 간 보호 효과에 대하여 으름 추출물 내 유효물질로 알려진 oleanolic acid와 hederagenin을 생쥐에 투여하였을 때 알코올로 인한 급성 간독성 상태에서 간 보호 효과를 조사하였다. 그 결과 oleanolic acid와 hederagenin의 투여는 알코올로 유발된 급성 간독성 상태에서 혈중 알코올 농도 감소 및 alcohol dehydrogenase mRNA 발현을 증가시키는 것으로 나타났으며, 간 조직 내 항산화 물질인 glutathione(GSH)의 농도를 증가시키고, GSH synthetic enzyme의 mRNA 발현 역시 증가시키는 것으로 확인되었다. 또한 염증반응 지표인 tumor necrosis factor-alpha의 mRNA 발현도 억제하는 것으로 분석되었다. 위의 결과들과 기존의 실험에서 확인한 으름 추출물의 간 보호 효과를 종합하였을 때 으름 추출물의 알코올로 유발된 산화 스트레스, 염증반응에 대한 간 보호 효과는 추출물 내 유효물질로 알려진 oleanolic acid 및 hederagenin의 작용에 의한 것이라 생각한다.

Keywords

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