• Title/Summary/Keyword: 간보호

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Hepatoprotective Effect of Catechin Isolated from the Root of Rosa rugosa Thunb (해당화 뿌리에서 분리한 Catechin의 간보호효과)

  • Hur, Jong-Moon;Kim, In-Ho;Park, Jong-Cheol
    • Korean Journal of Medicinal Crop Science
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    • v.15 no.1
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    • pp.21-25
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    • 2007
  • The root of Rosa rugosa has been used in folkloric medicine as a treatment agent for diabetes. In the present study, we investigated whether (+)-catechin isolated from this plant can change the activities of hepatic drug metabolizing enzymes in rats treated with bromobenzene. Pretreatment with (+)-catechin gave no effects on the activities of aminopyrine N-demethylase and aniline hydroxylase, enzymes forming toxic bromobenzene epoxide intermediates and glutathione Stransferase, an enzyme removing toxic epoxides. However, the activity of epoxide hydrolase, an enzyme detoxifying the bromobenzene toxic intermediates was mildly recovered by (+)-catechin treatment.

The preventive effect of Daeshiho-tang on liver damage induced by acetaminophen in the rats (대시호탕이 acetaminophen으로 유도된 간독성 흰쥐에 미치는 영향)

  • Kim Chang-Hyun;Kwon Young-Mo;Lee Young-Tae;Park Sun-Dong
    • Herbal Formula Science
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    • v.12 no.2
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    • pp.139-154
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    • 2004
  • Acetaminophen은 세계적으로 널리 사용되는 해열 진통제이지만, 또한 과용 및 남용, 알코올 중독과 같은 여러 원인에 의해 간독성을 유발할 수 있는 약물이다. 이러한 acetaminophen의 간독성은 CYP에 의해 생성되는 대사산물인 NAPQI와 활성산소에 의해 유발되는 것으로 알려져 있다. 본 연구에서 5주된 수컷 백서에 acetaminophen (500 mg/kg)을 투여하기 전에 대시호탕 (500 mg/kg)를 일주일간 투여하였다. 이후 GOT, GPT, GST 그리고, 조직사진으로 대시호탕의 간보호작용을 측정하였다. 또한 대시호탕의 간보호작용 기전을 항산화작용과 CYP 2E1 발현조절을 통한 NAPQI 생성억제의 두 가지 면에서 측정하였다. GOT, GPT 그리고 조직사진에서 나타난 결과들은 대시호탕이 고용량의 acetaminophen에 대한 간보호작용이 있음을 증명할 수 있었다. 또한 LPO와 catalase, 그리고 GSH 실험에서 나타난 결과들을 통해 대시호탕이 항산화작용이 있음을 알 수 있었다. 그리고 GSH, GST, RT-PCR, western blot 실험에서 대시호탕이 CYP 2E1의 발현을 조절하여 NAPQI 생성을 억제한다는 것도 알 수 있었다. 이상의 결과들을 바탕으로 대시호탕은 항산화작용에 의한 활성산소 제거력과 CYP 2E1의 발현조절을 통한 NAPQI 생성억제로 고용량 acetaminophen에 의해 유도된 간손상에 대해 유의성 있는 보호작용을 한다는 것을 알 수 있었다.

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The Hepatotprotective and Antioxidative Effects of Onion (Allium cepa) Extracts in Rat Hepatocyte Primary Culture (양파(Allium cepa) 추출물의 간보호 및 항산화 효과)

  • Rhim, Tae-Jin;Lim, Sang-Cheol
    • Proceedings of the Plant Resources Society of Korea Conference
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    • v.18 no.1
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    • pp.52-60
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    • 2005
  • The objectives of present study were to investigate the hepatoprotective and antioxidative effects of onion extracts. Primary cultures of rat hepatocytes were incubated with 1.5 mM tert-butyl hydroperoxide(t-BHP), potent oxidizing agent for liver injury for 1 hr in the presence or absence of various concentrations (0, 0.01, 0.05, 0.1 or 0.3 mg/ml) of onion extract. Cytotoxicity and cell viability were determined by measuring glutamic oxaloacetic transaminase(GOT) activity, lactate dehydrogenase(LDH) activity and 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide(MTT) value. Lipid peroxidation was evaluated using thiobarbituric acid reactive substances(TBARS) assay. Effects on antioxidant system were determined by measuring catalase, glutathione peroxidase(GSH-Px), glutathione reductase(GSH-Rd) activities as well as DNA strand breaking assay. Incubation with t-BHP alone increased GOT and LDH activities and TBARS concentration but decreased MTT reduction. Onion extracts at the concentration of 0.05 mg/ml began to decrease GOT and LDH activities induced by 1.5 mM t-BHP. Decreased MTT reduction began to be increased by onion extract at the concentration of 0.01 mg/ml. Onion extracts at the concentration of 0.01 mg/ml began to decrease TBARS concentration induced by t-BHP. Taken together, onion extracts prevented t-BHP-induced hepatocyte injury and lipid peroxidation. Catalase, GSH-Px and GSH-Rd activities of hepatocytes were significantly decreased by 1.5 mM t-BHP for 1 hr incubation. Onion extracts, on the other hand, at the concentration of 0.1 mg/ml began to prevent t-BHP-induced decrease in catalase, GSH-Px and GSH-Rd activities. Onion extracts prevented hydroxyl radical-induced single-strand breakage in dose-dependent manner when plasmid DNA was incubated with various concentrations of onion extracts in the presence of Fenton regents producing hydroxyl radical. These results demonstrate that onion extracts suppressed t-BHP-induced cytoctoxicity, decreased viability and lipid peroxidation and increased GSH-Px, GSH-Rd and catalase activities. Thus hepatoprotective and antioxidant effects of onion extract seem to be due to, at least in part, the increase in antioxidant enzyme activities as well as prevention from hydroxyl radical-induced oxidation, followed by inhibition in lipid peroxidation.

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The Hepatotprotective and Antioxidative Effects of Onion (Allium cepa) Extracts in Rat Hepatocyte Primary Culture (양파(Allium cepa) 추출물의 간보호 및 항산화 효과)

  • Lim Sang-Cheol;Rhim Tae-Jin
    • Korean Journal of Plant Resources
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    • v.18 no.3
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    • pp.470-478
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    • 2005
  • The objective of present study was to investigate the hepatoprotective and antioxidative effects of onion extracts. Primary cultures of rat hepatocytes were incubated with 1.5 mM tort-butyl hydroperoxide(t-BHP), potent oxidizing agent to liver, for 1 hr in the presence or absence of various concentrations (0, 0.01, 0.05, 0.1 or 0.3 mg/ml) of onion extract. Incubation with t-BHP increased glutamic oxaloacetic transaminase(GOT) and lactate dehydrogenase(LDH) acitivities and thiobarbituric acid reactive substances(TBARS) concentration but decreased 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide(MTT) reduction. Onion extracts at the concentration of 0.05 mg/ml decreased t-BHP-induced GOT and LDH activities. Onion extract at the concentration of 0.1 mg/ml increased t-BHP-induced MTT reduction. Onion extract at the concentration of 0.01 mg/ml decreased t-BHP-induced TBARS concentration. Taken together, onion extracts prevented t-BHP-induced hepatocyte injury and lipid peroxidation. Catalase, glutathione peroxidase(GSH-Px) and glutathione reductase(GSH-Rd) activities of hepatocytes were significantly decreased by t-BHP. Onion extracts at the concentration of 0.1 mg/ml prevented t-BHP-induced decrease in catalase, GSH-Px and GSH-Rd activities. Onion extracts prevented hydroxyl radical-induced single-strand breakage in dose-dependent manner when plasmid DNA was incubated with various concentrations of onion extracts in the presence of Fenton reagents producing hydroxyl radical. These results demonstrate that onion extracts suppressed t-BHP-induced cytoctoxicity, decreased viability and lipid peroxidation and increased GSH-Px, GSH-Rd and catalase activities. Thus hepatoprotective and antioxidant effects of onion extract seem to be due to, at least in part, the increase in antioxidant enzyme activities as well as prevention from hydroxyl radical-induced oxidation, followed by inhibition of lipid peroxidation.

The Effects of Selenium on Cadmium-Induced Toxicity and Lipid Peroxidation in Rat Hepatocyte Primary Culture (랫드 간세포 일차배양에서 셀레늄이 카드뮴에 의해 유도된 독성 및 지질과산화에 미치는 영향)

  • Rhim, Tae-Jin
    • Korean Journal of Environmental Agriculture
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    • v.22 no.2
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    • pp.94-99
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    • 2003
  • The objective of present study was to investigate the antioxidative and hepatoprotective effects of selenium on cadmium-induced toxicity and lipid peroxidation in rat hepatocyte primary culture. To do this, two separate experiments were conducted. In Experiment 1, primary cultures of rat hepatocytes were incubated for 6 hr in the presence of various concentrations (1, 10, 50, 100, and $500\;{\mu}M$) of cadmium chloride. Cytotoxicity and lipid peroxidation were evaluated using the MTT assay and TBARS assay, respectively. Antioxidative and hepatoprotective effects were determined by measuring the activity of GOT and GSH-Px, respectively. Cell viability was reduced and lipid peroxidation was increased by cadmium in dose-dependent manners. There was significantly negative correlation (r=-0.943, p<0.01) between cell viability and lipid peroxidation GOT activity was increased and GSH-Px activity was decreased by cadmium at the concentration of $50\;{\mu}M$. In Experiment 2, primary cultures of rat hepatocytes were incubated for 6hr in the presence of 100\;{\mu}M$ of cadmium chloride and various concentrations (0.01, 0.1 and 1 ppm) of sodium selenite to assess the effect of selenium on cadmium-induced toxicity and lipid peroxidation. Cell viability and GSH-Px activity were increased by sodium selenite at the concentration of 1 ppm Whereas, lipid peroxidation and GOT activity were reduced by 0.1 ppm of sodium selenite. These results demonstrate that selenium has an antioxidative and hepatoprotective potentials against cadmium.

Protective Effect of Theanine on the Acetaminophen-induced Hepatotoxicity (아세트아미노펜에 의해 유도된 간독성 모델에서의 Theanine의 간보호 효과)

  • Eu, Jung-Bu;Kim, Sun-Oh;Seoung, Tae-Jong;Choi, Sung-Gil;Cho, Sung-Hwaon;Choi, Chul-Yung
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.39 no.3
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    • pp.350-355
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    • 2010
  • The hepatoprotective effects of theanine on acetaminophen (APAP)-induced hepatotoxicity were investigated in vivo and in vitro. The effects of theanine on liver toxicity induced by APAP were assessed by blood biochemical and histopathological analyses. APAP treatment (400 mg/kg) caused severe liver injury in mice as indicated by their significantly elevated plasma aspartate aminotransferase (AST) and alanine aminotransferase (ALT) levels. Pretreatment with theanine for 3 days attenuated the increase in ALT and AST when challenged with APAP. These protective effects of theanine against APAP-induced toxicity were consistent with the results from the histopathological examinations. We next examined the effects of theanine on the GSH concentration in liver plasma. The hepatic GSH level was significantly elevated in a dose-dependent manner by theanine treatment. The results suggest that the protective effects of theanine APAP-induced hapatotoxicity by antioxidative effect and GSH induction, implying that theanine should be considered a potential chemopreventive agent.

Protective Effects of Akebia quinata Fruit Extract on Acute Alcohol-induced Hepatotoxicity in Mice (급성 알코올 간독성을 유발한 생쥐에 있어서 으름 열매 추출물의 간 기능 보호효과)

  • Lee, Sang Hoon;Song, Young Sun;Lee, Seo Yeon;Kim, So Young;Ko, Kwang Suk
    • Korean Journal of Food Science and Technology
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    • v.46 no.5
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    • pp.622-629
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    • 2014
  • We studied the effects of Akebia quinata fruit extract (AQ) on acute alcohol-induced hepatotoxicity in mice. AQ (30-1,000 mg/kg body weight (BW) per day) was orally administered to the study group, once daily for 1 week. On the last day of AQ treatment, ethanol (6 mg/kg BW) was orally administered to induce acute liver injury. The AQ-treated group showed significantly lower levels of alanine aminotransferase and aspartate aminotransferase, compared to the only ethanol-treated group (ETG). The glutathione level in the AQ-treated group elevated up to 20.6%, compared to that observed in the ETG. The mRNA expression of glutathione synthetic enzymes was also higher in the AQ-treated group, compared to the ETG. The AQ-treated group also exhibited lower levels of expression of NADPH oxidase 4 and tumor necrosis factor alpha mRNA. Thus, these results show that AQ treatment can be a potential method to reduce oxidative stress and inflammation in ethanol-treated mouse liver and also that AQ can be a useful therapeutic agent for acute alcohol-induced hepatotoxicity.

Protective Effects of Mesangi (Capsosiphon fulvecens) on Hepatotoxicity in Carbon Tetrachloride (CCI4)-Intoxicated Rats (매생이가 사염화탄소로 유발된 흰쥐의 간손상에 미치는 영향)

  • Kwon, Mi-Jin;Nam, Taek-Jeong
    • Journal of Life Science
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    • v.16 no.5
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    • pp.734-739
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    • 2006
  • This study investigated the hepatoprotective effects of mesangi (Capsosiphon fulvecens) in carbon tetrachloride $(CCI_4)$-induced liver injury. Thirty healthy male Sprague-Dawley rats were divided into three groups : the normal (Normal), $CCI_4$-treated $(CCI_4)$, and mesangi-treated (Exp-CF) groups. Administration of $CCI_4$ increased the levels of GOT, GPT, and LDH in serum, while the levels were significantly decreased by the addition of mesangi. Higher levels of HDL-cholesterol were found in the Normal and Exp-CF groups, which has lower levels of total and LDL-cholesterol. Administration of $CCI_4$ also increased IGFBP-1 expression in serum, but it was decreased in the Exp-CF group. This suggests that $CCI_4$ is involved in the change in IGFBP-1 expression via its hepatotoxicity. The results indicate that mesangi has a hepatoprotective effect in rats given $CCI_4$.

Protective effect of STAR of STAR series on CCl4 induced acute hepatotoxicity by regulation of reactive oxygen species (활성산소종의 조절을 통한 음료 '별의별간'의 급성간독성 보호효과)

  • Chang, Bo Yoon;Oh, Jun Seok;Han, Ji Hye;Kim, Da Eun;Hong, Jae Heoi;Kim, Sung Yeon
    • Korean Journal of Food Preservation
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    • v.23 no.2
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    • pp.275-282
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    • 2016
  • STAR of STAR (SS 01-04) is a series of drinks that consist of various extracts obtained from Coriolus versicolor, Artemisia capillaris Thunb., Hovenia dulcis, Acanthopanax sessiliflorus, Lycium chinense, Citrus reticulata, Saururus chinensis, Pueraria lobata, Pyrus pyrifolia, and Oenanthe javanica. A purpose of this study was to investigate the hepatoprotective effect of SS 01-04. Antioxidant activity of the drinks was evaluated by conducting a hydroxyl radical-scavenging assay. Cytotoxicity and hepatoprotective potential were determined using HepG2 cells in vitro, while protective effects against acute hepatotoxicity was evaluated in vivo. The antioxidant activity of the SS 01-04 at concentration of 100 and 250 mg/mL was similar to that of $50{\mu}M$ vitamin C. tert-Butyl hydroperoxide (tBHP)-induced production of reactive oxygen species (ROS) was blocked by SS 01, 03 and 04 in a dose-dependent manner. Treatment with SS 04 significantly lowered the serum levels of alanine aminotransferase and aspartate aminotransferase in an animal model of carbon tetrachloride $(CCl_4)-induced$ hepatotoxicity (p<0.05). In addition, SS04 increased glutathione level while decreased malondialdehyde level in the liver considerably (p<0.05). It also inhibited the $CCl_4-induced$ increase in the levels of triglyceride and cholesterol in serum and the liver. These findings indicated that SS 01-04 possessed antioxidant activity and protect against ROS. In particular, SS 04 is potentially highly beneficial in treating liver damage as it scavenges reactive free radicals and boosts the endogenous antioxidant system.