• 한국식품영양학회지
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• 제27권5호
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• pp.751-759
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• 2014

본 연구에서는 인진쑥 배지에서 배양한 노루궁뎅이버섯 균사체 배양 추출물의 간세포 독성 및 간세포 보호 효과와 이 배양 추출물에 흑마늘 추출물을 혼합한 혼합액의 간세포 보호 효과와 항산화력을 측정하였다. 배양 추출물의 세포 독성을 농도별로 측정한 결과, 0.05 mg/mL의 농도 이상에서는 세포생존율이 유의적으로 감소하는 것으로 나타났으며, 배양 추출물의 간세포 보호 효과를 측정한 결과, 물과 ethanol의 비율 5:5, $80^{\circ}C$의 조건에서 추출한 추출물이 상대적으로 가장 좋은 간세포 보호 효과를 나타내었다. 이 조건에서 추출한 배양 추출물에 흑마늘을 혼합(배양 추출물:흑마늘 추출물=9:1, 8:2, 7:3)하여 간세포 보호 효과와 항산화력을 측정하였다. 측정 결과, 간세포 보호 효과는 흑마늘 추출물 첨가 시 유의적인 차이가 나타내지 않았으며, 항산화력 측정 결과에서는 오히려 흑마늘 추출물 첨가 비율이 낮을수록 상대적으로 높은 항산화 활성을 보여, 흑마늘 추출물의 경우, 적은 농도에서는 간세포 보호 효과 및 항산화력에 영향을 주지 않는 것으로 추정되었다. 배양 추출물만으로(1.9 Brix, 15%) 액상과당 농도를 달리하여(10, 15, 20%) 제조한 음료의 관능검사 실시 결과, 액상과당 농도 차이가 단맛에서는 유의적 차이를 나타내었으나, 쓴맛, 향, 농도 및 전반적 기호도에 있어서는 유의적 차이를 나타내지 않았다.

• 약학회지
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• 제50권4호
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• pp.287-292
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• 2006

Protective effects of the water extract of Protaetia brevitarsis larva against $CCl_4-induced$ toxicity were investigated in primary cultures of adult rat hepatocytes. The extract used in these studies contained several minerals, fatty acids and amino acids. Treatment of hepatocyte cultures with the extract provided a significant protection from the increased LDH activity induced by $CCl_4$. The results demonstrated that the extract may have the protective effect against $CCl_4-induced$ toxicity in hepatocyte cultures.

• 한국식품영양학회지
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• 제32권1호
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• pp.33-40
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• 2019

The purpose of this study was to evaluate the antioxidant and hepatocyte protective effects of guava (Psidium guajava L.) leaves cultivated in Korea. The contents of the total polyphenol of the extract was 271.57 mg gallic acid equivalent (GAE)/g residue. Antioxidant activities of leaf extract were evaluated by examining the free radical scavenging ability. 2,2'-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) and ${\alpha}-{\alpha}$-diphenyl-${\beta}$-picrylhydrazyl (DPPH) free radical scavenging activities of the extract were 1133.23 mg trolox equivalent antioxidant capacity (TEAC)/g residue and 721.68 mg TEAC/g residue, respectively. The hepatocyte protective effect of guava leaf extract was examined in HepG2 cells. Against tert-butyl hydroperoxide (TBHP), the viability of HepG2 cells were increased by the treatment of leaf extract. In addition, guava leaf extract led to the inhibition of reactive oxygen species (ROS) generated in HepG2 cells. The leaf extract increased the activity of glutathione (GSH), glutathione reductase (GR), and glutathione peroxidase (GPx) against oxidative stress. These results suggested that guava leaves might be regarded as a potential source natural antioxidant and a hepatoprotective material.

• 한국식품영양과학회지
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• 제24권1호
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• pp.127-132
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• 1995

The protective effect of jujube methanol extract on benzo(a)pyrene(B(a)P)-induced liver injury was studied in rats in vitro and in vivo. Jujube methanol extract significantly recovered the enzyme activities(GOT, GPT, LDH and ALP) and lipid contents(total cholesterol, triglyceride and HDL-cholesterol) changed by B(a)P to normal levels in vivo. in viro experiment jujube methanol extract didn't stimulate hepatocyte proliferation but significantly recovered the enzyme activities(GOT, GPT and LDH) in comparison to group Ⅱ administered B(a)P only. It was suggested that jujube methanol extract have a protective effect on liver injury by B(a)P.

• 대한한의학회지
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• 제19권1호
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• pp.145-164
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• 1998

The purpose of this study is to evaluate the effect of Injinchunggantang-derivative on proliferation of hepatocyte in rats. Cell viability is studied by MTI assay. The gene related to cell replication such as p53, waf1, bcl-2 and $bcl-_{X_L}$ is quantitized by quantitative RT-PCR and the proteins coded by these genes are studied by Western blotting. The results are as follows. 1. The hepatocytes cultured in medium with lnjinchunggantang-derivative showed better viability compared with control grroup in MTI assay, and the hepatocytes cultured in medium with the Injinchunggantang-derivative-and-ethanol-mixed group showed better viability than the hepatocytes cultrued in 10% ethanol culture medium(control group), noting that Injinchunggantang-derivative has protective effect on hepatocyte injury. There was no dose- and time-dependence. 2. In quantitative RT-PCR, i) Bel-2 gene increased significantly both in Injinchunggantang-derivative group and in Injinchunggantang-derivative-and-ethanol-mixed group, while it showed no significant increase or decrease in other group. ii) $Bcl-_{X_L}$ gene increased significantly in Injinchunggantang-derivative group as well as in Injinchunggantang-deri vative-and-ethanol -mixed group. iii) P53 gene showed no significant increase or decrease in hepatocytes cultured in medium with 10% ethanol and in hepatocytes cultured in medium with Injinchunggantang-derivative-and-ethanol-mixed group, suggesting that 10% ethanol induced cell toxicity, thus increased p53 gene expression. iv) Wafl gene showed no significant increase or decrease in hepatocytes cutured in medium with Injinchtrnggantang-derivative, while increased in hepatocytes cultured in medium with 10% ethanol and in hepatocytes cultured in medium with Injinchtrnggantang-derivative-andethanol-mixed group, suggesting that 10% ethanol induced cell toxicity increased wafl gene expression. 3. In the study on protein by western blotting, the band of bcl-2 and $bcl-_{X_L}$ were widened in Injinchtrnggantang-derivative group. Especially the amount of $bcl-_{X_L}$ increased significantly compared with other groups. But in the study on p53 and wafl, there was no significant difference among those groups. Above study shows that Injinchunggantang-derivative has good effect on cell viability and that the genes resistant to cell death such as bcl-2 and $bcl-_{X_L}$ are induced by Injinchunggantang-derivative to resist to cell death by toxic agent And this is reconfirmed in protein study using' western blotting: These results suggest that Injinchunggantang-derivative has inhibitory effect on cell death as well as protective effect on hepatocyte. Therefore this prescription is recommended in various liver diseases such as chronic liver disease and-induced hepatic injury.

• 약학회지
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• 제56권2호
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• pp.99-107
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• 2012

The protective effect of AI-1367 (Alnus japonica extract) on liver injury was investigated. Primary rat hepatocyte intoxication was induced by tert-butyl hydroperoxide (tBH), carbon tetrachloride ($CCl_4$), or D-glactosamine (D-GalN). Liver injury was induced by $CCl_4$, D-GalN or MCD (methionine choline deficient)-diet in mouse. The cellular leakage of lactate dehyrogenase and cell viability followed by the treatment of hepatotoxicants were significantly improved by AI-1367 treatment at a concentration range of 5~50 ${\mu}g/ml$ for tBH, 5~50 ${\mu}g/ml$ for D-GalN, and 5~100 ${\mu}g/ml$ for $CCl_4$, respectively. Treatment with AI-1367 (20, 10, 5 mg/kg, p.o.) on liver injury induced by subcutaneous injection of $CCl_4$ or D-GalN reduced significantly the levels of aspartate transaminase and alanine transaminase in serum. Histological observations revealed that fatty acid changes, hepatocyte necrosis and inflammatory cell infiltration in $CCl_4$ (D-GalN)-induced liver injury was improved by administration of AI-1367. AI-1367 treatment (10, 5, 2.5 mg/kg, p.o.) also significantly recovered the body weight change and serum levels of aspartate transaminase, alanine transaminase and triglyceride in liver injury induced by MCD diet. From these results, AI-1367 shows protective effects against tBH, $CCl_4$, D-GalN, or MCD diet-induced hepatotoxicity in vitro or in vivo.

• 대한한의학회지
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• 제21권1호
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• pp.53-61
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• 2000

Objectives: This study was camed out to examine the effect of five fractions of aqueous extract from Artemisia capillaris THUNB(ACT), on TGF, 1-induced apoptosis, cell viability, cell cycle progression and mRNA expression of apoptosis-related genes in human hepatocyte cell line HepG2. Methods: This study employed Tryphan blue exclusion assay, DNA fragmentation assay, Cpp32 protease activity assay and Quantitative RT-PCR analysis. Results: In the Tryphan blue exclusion assay, the butanol fraction of ACT with $TGF{\beta}$, l showed magnificent (Nice word, ut is it appropriate in a medical abstract\ulcorner) viability and the H2O fraction of ACT with $TGF{\beta}$, l also showed higher viability than only $TGF{\beta}$, l-treated group. DNA fragmentation assay showed that the butanol fraction and the H2O fraction carried inhibitory effects on apoptosis induction, with the butanol fraction displaying greater effects. The Cpp32 protease activity assay showed that the butanol fraction decreased Cpp32 protease activity. The H2O fraction of ACT had no significant effect on the Cpp32 protease activity. Quantitative RT-PCR showed that the butanol fraction suppressed Bax, p 15/INK4B, p21/Waf1, PAI-1 and increased Bcl-2 gene. Conclusions: The data shows that butanol fraction of ACT increases the hepatocyte viability and has the hepatocellular protective effect by the suppression of $TGF{\beta}$, l induced-apoptosis through gene regulation.

• 약학회지
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• 제52권1호
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• pp.56-61
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• 2008

The hepatoprotective effects of the water extracts of Hovenia dulcis Thunb (HD) were investigated in vitro. Following the induction of hepatotoxicity by ethanol in primary cultures of rat hepatocytes, the protective effects of four different water extracts of HD were determined through serial dose-response and time-dependent studies. The individual extracts used in these studies were prepared from fruits, seeds, leaves and tubes. Treatment of hepatocyte cultures with the water extracts of HD provided a significant protection from the increased lactate dehydrogenase activity induced by ethanol. Particularly, the fruits extract was the most effective against ethanol-induced hepatotoxicity in the primary cultures of rat hepatocytes. The results demonstrated that the extracts might have the protective effect against ethanol-induced toxicity in hepatocyte cultures.

• 한국잠사곤충학회지
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• 제50권2호
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• pp.93-100
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• 2012

본 연구는 사염화탄소에 의하여 유발되는 지질과산화에 의한 간독성에 대한 흰점박이꽃무지 추출물의 보호효과를 일차배양한 간세포와 간독성 흰쥐에서 GPT, bile acid, bilirubin 등의 활성 지표를 통해 간독성 회복효과를 알아보고자 하였다. 사염화탄소로 유발시킨 일차배양 간세포에 대한 흰점박이꽃무지와 장수하늘소 추출물의 간독성 회복효과는 각각 41.2%와 8.4%로 흰점박이꽃무지 유충 추출물이 간독성 회복 효과가 높게 나타났으며, 용매 추출별로는 흰점박이꽃무지 메탄올 추출물보다는 물 추출물이 농도의존적으로 간독성 회복효과가 있음을 확인하였다. 사염화탄소에 의해 간독성이 유도된 흰쥐에 흰점박이꽃무지 물추출물 분획별로 처리하였을 때, 분자량 낮을수록 효과적이었으며, 분자량이 1,000이하의 분획물에서 32.1%로 간독성 회복 효과가 우수하였다. 또한 흰쥐에 사염화탄소를 복강투여로 간독성을 유발한 후 흰점박이꽃무지 물분획물을 경구투여할 경우에 혈청 GPT, bile acid와 bilirubin의 활성이 정상군보다는 높았지만 사염화탄소군보다 유의적으로 감소하였고, 간섬유화와 관련된 hydroxyproline의 생성 억제에서는 분자량이 1000이하의 분획물에서 사염화탄소군보다 유의성 있게 생성을 억제하여 간섬유화를 예방하는 것으로 확인하였다. 중심정맥 쪽에 아주 경미한 허혈성 변성 이외에는 다른 병변을 찾을 수 없었고 세포내에 organelle이 유지된 편이고 콜라겐 형성이 매우 많이 줄어들어 병리조직학적으로도 간보호 효과가 있었음을 확인하였다. 이에 간독성 지표 활성을 긍정적으로 결과를 확인한 흰점박이꽃무지 추출물의 간질환 치료보조제나 건강기능성식품 소재 개발 가능성을 확인하였다.

• 생약학회지
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• 제36권3호통권142호
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• pp.224-228
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• 2005

Protective effects of various natural flavonoids on carbon tetrachloride $(CCl_4)-induced$ hepatotoxicity were investigated in primary cultured rat hepatocytes. Some of these flavonoids decreased the ALT and LDH releases induced by $CCl_4$ in A dose-dependent manner. Neohesperidin, hesperetin, baicalin, baicalein and quercetin inhibited $CCl_4-induced$ alanine aminotransferase (ALT) release. In addition, quercetin, quercitrin, neohesperidin, baicalin, baicalein and naringin reduced $CCl_4$ induced lactate dehydrogenase (LDH) leakage. Among these flavonoids, quercitrin, quercetin, baicalin and baicalein possessed potent protective effects and were selected for the further investigation on lipid peroxidation. These four flavonoids inhibited dose dependently $CCl_4-induced$ lipid peroxidation. Especially, the protective effects of quercetin and baicalein were similar to silybin as a well-known hepatoprotective agent. These results suggest that these four flavonoids have significant cytoprotective effects and possibility of therapeutic effect on chemical-induced liver diseases.