• 대한한의진단학회지
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• 제17권3호
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• pp.275-286
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• 2013

In the present study, antioxidant activity and protective effect of extracts from Sambucus williamsii var. coreana stems (SWC) were evaluated on tert-butyl hydroperoxide (t-BHP) induced oxidative stress in human liver (Chang) cells. Antioxidant activities of the SWC extracts were determined by various radical scavenging activities, such as DPPH, ferric reducing antioxidant power (FRAP), 2,2'-azinobis-(3-ethybenzothiazoline-6-sulfonic acid) (ABTS) radical scavenging activity and oxygen radical absorbance capacity (ORAC) assay. SWC extracts showed strong antioxidant effect on various assay. To determine the hepatoprotective effects of SWC on t-BHP induced oxidative damage, cell viability was measured using MTT assay. Pretreatment of SWC extracts showed increasing cell viability, decreasing ROS and restoring mitochondria membrane potential on t-BHP induced oxidative stress in Chang cells. Our findings suggest that SWC extracts may be considered a potential agent for therapeutic protective effect from oxidative stress through its antioxidant activity.

• 대한약학회:학술대회논문집
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• 대한약학회 2002년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.2
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• pp.257.2-257.2
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• 2002

This research was performed to investigate the protective effect of Yangguksanwha-tang(YST) agaist ischemic damage in PC 12 cells. To elucidate the mechanism of the protective effect of YST on ischemic insult. cell viability and changes in activities of Superoxide dismutase. Glutathione Peroxidase. Catalase. capase 3 and the production of Malondialdehyde were observed after treating PC12 cells with YSt which was metabolized by rat liver homogenate. (omitted)

• 동의생리병리학회지
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• 제18권3호
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• pp.868-873
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• 2004

Renal dysfunction could be developed as the secondary disease of liver cirrhosis. Delayed or suppresed lipid peroxidation by the treatment with physiological active substances could be explained as the antioxidative and protective effect in tissue damage. In this study, we investigated an antioxidative effect and renal function improvement of Hovenia dulcis in liver fibrosis(cirrhosis) induced rats. The female Sprague-Dawley rats (180∼210 g) were divided into 3 groups (Normal, AC: CCl₄ mixture treated group, AC-HV: CCl₄ mixture+ Hovenia dulcis treated group) and renal damage was developed by CCl₄ mixture administration in 4 weeks (0.8 ㎖/rat). The tissue of kidney and liver and sera were used for quantitative measurement of enzyme activity, MDA and Hyp. The histological change and gene expression of collagen α1(III) mRNA and a1(IV) mRNA were observed by Masson's trichrome staining and RT-PCR. As a result, the clinical biochemical parameters of liver function (AST and ALT) in sera of AC-HV group showed significantly 46.4% and 104.8% lower (p<0.005), and the level of ALP and BUN as the parameter of protein urine and azotemia showed 17.8 % and 25.8 % lower than in AC group. In AC-HV group, the concentration of MDA in kidney and liver was decreased significantly 15.8% and 21.3% when compared with AC group (p<0.01 -0.005). The content of Hyp in kidney of AC-HV group is merely higher than in AC group, in contrast to liver tissue. The expression of collagen α1(III) mRNA and collagen α1(IV) mRNA was decreased in AC, but both of collagen mRNA in normal and AC-HV group expressed fast similar. More massive lipid droplets, thicker collagen fiber bundles in portal triads and more formation of portal central septum were observed in the liver of AC group than in AC-HV group. In conclusion, CCl₄ mixture intoxication could be developed not only liver fibrosis(cirrhosis) but also renal dysfunction by the massive lipid peroxidation and suppression of interstitial collagen and basement membrane collagen synthesis. And the water extract of Hovenia dulcis may be possessed the antioxidative and protective effect and improvement of kidney function in renal dysfunction induced rats.

• Journal of Nutrition and Health
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• 제48권1호
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• pp.1-8
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• 2015

자색고구마 열수추출물의 간 보호 기능을 확인하기 위해 C57BL/6 마우스를 사용하여 시험하였다. 지방간 유도를 위해 8주간 고지방/콜레스테롤 식이를 급여하였으며, 자색고구마 열수추출물은 1.25, 2.5, 5%의 수준으로 식이에 함께 넣어 같은 기간 동안 제공하였다. 간 조직의 병리학적 분석, 혈장 ALT 활성도, 간 및 혈장의 TC 수준을 바탕으로 비알콜성 지방간 모델이 형성되었음을 확인하였다. 고지방/콜레스테롤 식이의 급여는 식이섭취량을 감소시켜 총 에너지 섭취량은 시험군간 차이가 없었으나, 포화지방을 급원으로 하였을 때 지방세포의 비대와 혈장 TC, 간 TC, 간의 지방구를 증가시키는 것으로 관찰되었다. 한편 자색고구마 열수추출물을 고지방/콜레스테롤 식이와 함께 섭취시킨 결과, 고지방/콜레스테롤 식이로 인한 지질대사 이상을 유의하게 변화시키지 못해 혈액 및 간 손상 지표를 개선시키지 못하였으나, 지방조직의 크기는 작게 유지하고 간의 지방구 형성은 억제하는 것으로 관찰되었다. 이상의 결과로 자색고구마 열수추출물은 지질대사 개선을 통해 간 보호 효과를 갖음을 알 수 있었다. 향후에는 자색고구마 열수추출물이 지방세포-간의 상호 지질대사에 미치는 영향을 추가적으로 연구해야 할 것으로 사료된다.

• Asian-Australasian Journal of Animal Sciences
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• 제27권6호
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• pp.907-915
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• 2014

Alpha-lipoic acid (${\alpha}$-LA) is not only involved in energy metabolism, but is also a powerful antioxidant that can protect against hepatic oxidative stress induced by some drugs, toxins, or under various physiological and pathophysiological conditions. Here, we investigated the effect of ${\alpha}$-LA against liver oxidative damage in broilers exposed to aflatoxin $B_1$ ($AFB_1$). Birds were randomly divided into four groups and assigned different diets: basal diet, 300 mg/kg ${\alpha}$-LA supplementation in basal diet, diet containing 74 ${\mu}g/kg$ $AFB_1$, and 300 mg/kg ${\alpha}$-LA supplementation in diet containing 74 ${\mu}g/kg$ $AFB_1$, for 3 weeks. The results revealed that the addition of 300 mg/kg ${\alpha}$-LA protected against the liver function damage of broilers induced by chronic low dose of $AFB_1$ as estimated by a significant (p<0.05) change in levels of plasma total protein, albumin, alkaline phosphatase and the activities of liver glutamic-oxalacetic transaminase and glutamic-pyruvic transaminase. The histopathological analysis also showed that liver tissues were injured in the $AFB_1$ diet, but this effect was alleviated by the addition of 300 mg/kg ${\alpha}$-LA. Additionally, $AFB_1$ induced a profound elevation of oxidative stress in birds, as indicated by an increase in malondialdehyde level, a decrease in glutathione peroxidase activity and a depletion of the glutathione content in the liver. All of these negative effects were inhibited by treatment with ${\alpha}$-LA. Our results suggest that the inhibition of $AFB_1$-induced excess production of lipid peroxides and the maintenance of intracellular antioxidant status may play important roles in the protective effects of ${\alpha}$-LA against $AFB_1$-induced oxidative damage in the liver.

• Journal of Nutrition and Health
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• 제49권6호
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• pp.420-428
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• 2016

본 연구에서는 Sprague-Dawley 종 흰 쥐 수컷을 정상 대조군 (C), 알코올 군 (E), 알코올 + 100 mg/kgBW 곤드레 에탄올 추출물군 (E+LCS), 알코올 + 500 mg/kgBW 곤드레 에탄올 추출물군 (E+HCS)으로 나누어 Lieber-DeCarli control diet 혹은 Lieber-DeCarli ethanol diet를 8주간 공급하였으며, 이때 곤드레 에탄올 추출물은 액상 사료에 직접 섞어 공급하였다. 알코올과 곤드레 에탄올 추출물의 식이 공급 종료 후 간 조직의 지방구 축적 정도를 살펴본 결과, E+LCS군과 E+HSC군은 E군에 비해 지방간 발생이 유의적으로 억제되었으며, 정상 대조군인 C군과 유의적인 차이가 없었다. 이와 비슷하게, 곤드레 에탄올 추출물의 공급은 알코올에 의해 증가된 간 조직과 혈청의 중성지방 농도를 유의적으로 낮추었으며, 혈청 AST와 혈청 ALT 활성도 정상 대조군 수준으로 회복시키는 것으로 나타났다. 한편, 곤드레 에탄올 추출물의 공급은 p-AMPK과 p-ACC 단백질 수준을 농도 의존적으로 증가시켰으며, 두 단백질 모두 E군에 비해 E+HSC군에서 유의적으로 높게 나타났다. 또한 FAS mRNA와 SCD1 mRNA 수준은 E군에 비해 E+HSC군에서 유의적으로 낮게 나타났다. 곤드레 에탄올 추출물은 간 조직에서 알코올 공급에 의해 증가된 $NF{\kappa}B$의 활성을 유의적으로 낮추었으며, $NF{\kappa}B$의 표적 단백질인 $TNF{\alpha}$ 단백질 수준을 농도의존적으로 낮추었다. 본 연구 결과를 통해 곤드레는 알코올에 의한 지방간 발생 및 관련된 간 손상을 유의적으로 억제할 수 있음을 확인하였으며 이 과정에서 AMPK 활성 증가와 $NF{\kappa}B$ 활성 억제가 관여함을 제시하였다.

• 대한한방내과학회지
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• 제31권1호
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• pp.11-24
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• 2010

Objectives : This study was carried out to investigate the hepatoprotective effects of mixture with Hovenia dulcis Thunb (HDT) and Acer tegmentosum Maxim(ATM) on D-galactosamine-induced liver failure in rats. Methods : The animals were divided into 4 groups: control, with liver failure and no treatment; H1A1, with liver failure and oral treatment with HDT 1 and ATM 1; H1A2, with liver failure and oral treatment with HDT 1 and ATM 2; H1A4, with liver failure and oral treatment with HDT 1 and ATM 4. The animals were treated for 3 weeks and then examinations of change of body weight, aspartate aminotransferase (AST), alanine aminotransferase (ALT), gamma glutamyl transpeptidase ($\gamma$-GTP), total cholesterol, triglyceride, total bilirubin, superoxide dismutase (SOD), catalase, histopathologic change, and complete blood count (CBC) were performed. Results : All experimental groups had significantly decreased AST in serum and markedly increased activity of SOD as compared with the control group. H1A1, and H1A4 significantly decreased ALT in serum and H1A4 at 2 weeks was significantly higher on the change of body weight as compared with the control group. In histopathologic change of liver tissue by light microscopy, all experimental groups showed recovery effects of liver cells which were damaged by D-galactosamine. Conclusions : Based upon these results, it could be assumed that a mixture of HDT and ATM has hepatoprotective and antioxidative effects on D-galactosamine-induced liver failure. Therefore, a mixture of HDT and ATM might be utilized as a protective agent in therapy for liver diseases.

• 한방비만학회지
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• 제18권2호
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• pp.74-82
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• 2018

Objectives: The objective of this study is to investigate the effects of Silbi-um (SBU) extract on the alcoholic fatty liver induced by EtOH administration for 8 weeks. Methods: Male Sprague Dawley rats were used. All animals were randomly divided into 3 groups; Normal, EtOH and EtOH+SBU. The rats of EtOH group were daily treated with ethanol of 25% (v/v) for 8 weeks (n=10). EtOH+SBU group was orally treated with SBU water extract after ethanol administration (n=10). The rats of Normal group were treated with saline (n=10). After 8 weeks, the mean body weight, liver weight, and liver-body weight ratio were calculated. The serum alanine aminotransferase (ALT) and aspartate aminotransferase (AST) of all groups were measured. The morphological alterations were observed using hematoxylin and eosin (H&E) and Oil Red O staining. Moreover, the alteration of tumor necrosis $factor-{\alpha}$ ($TNF-{\alpha}$) levels were analyzed immunohistochemistrically. Results: The histological data showed that liver sections from EtOH group displayed severe steatosis. SBU extract significantly inhibited the progression of the alcoholic liver injury. The increased serum level of ALT and AST induced by ethanol administration were decreased by SBU extract. Furthermore, SBU extract significantly decreased the liver concentrations of $TNF-{\alpha}$. Conclusions: SBU water extract attenuated the alcohol induced fatty liver by improving hepatic lipid metabolism via suppression of $TNF-{\alpha}$ protein. SBU could be effective in protecting the liver from alcoholic fatty liver.

• 한국환경보건학회지
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• 제21권3호
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• pp.28-37
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• 1995

This study is performed to find out the effects of selenium against cadmium toxicity. The experimental mice were divided into 6 gruops such as control group, cadmium alone treatment group, selenium treatment groups and two simultaneous treatment groups of selenium and cadmium. Mice were given intraperitoneal administration with two dosage of sodium selenite such as 1.0 mg/kg, 2.5 mg/kg body weight and cadmium chloride was administered 3.0 mg/kg body weight. After giving the challenge dose, the concentration of cadmium and metallothionein and histopathological change of liver and kidney were determined. The results were summarized as follows on 1. The simultaneously administration of selenium and cadmium significantly more decreased cadmium concentration in kidney and iiver tissues compared to the administration of cadmium only(P<0.05). 2. The simultaneously administration of selenium and cadmium more increased metallothionein concentration compared to administration of cadmium only. 3. The simultaneously administration of selenium and cadmium more decreased cadmium concentration in urine compared to the administration of cadmium only. 4. When liver and kidney tissues were observed with optical microscope, no obvious changes were visible in those tissues.

• Biomolecules & Therapeutics
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• 제5권2호
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• pp.194-201
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• 1997

The hepatoprotective activity of six extracts (BE, EE, HH, PS-1, PS-2, KP) from Artimisia iwayomogi was investigated against experimentally produced hepatic damages. Silymarin, DDB and UDCA were used as reference compounds. Treatment with PS-1 extract reduced hepatic demages induced by $CCl_4$, acetaminophen and ANIT but it did not alter ethionine-induced hepatotoxicity In addition, PS-1 extract showed a protective effect against chronic $CCl_4$-induced hepatotoxicity as well as liver regeneration. PS-2 and KP extracts exhibited significant antihepatotoxic effects on D-galactosamine-induced hepatitis. Treatment with EE extract inhibited ethionine-induced fatty liver. These data indicate that the PS-1 extract is the roost hepato-protective constituent and rationalize the traditional use of this plant in hepatobiliary disorders.