• 대한한의학회지
• /
• 제26권1호
• /
• pp.76-84
• /
• 2005

Objective: The purpose of this study was to examine the protective efficacy of GHT on alcoholic liver injury. Methods: We measured the rate of alcohol oxidation, serum level of liver enzyme, lipid peroxidation level in liver tissue, and inflammatory related cytokine expressions in the liver. Results : GHT showed liver protective effects, lowered the levels of AST and LDH in serum and inhibited lipid peroxidation in liver tissue, and enhanced alcohol oxidation. GHT treatment up-regulated IL-10 in the liver, whereas it down­regulated $TNF-\alpha,\;TGF-\beta$, and Fas ligand. Conclusion : From these results, GHT is presumed to work in the liver in protective roles not through the pathway of alcohol metabolism but mainly by anti-inflammation activity in our model.

• 한국자원식물학회지
• /
• 제8권3호
• /
• pp.275-280
• /
• 1995

Mouse의 $CCl_4$에 의한 급성간장해에 있어서 마늘분말은 농도의존적으로 간세포보호효과, 간독성억제효과를 갖는 것이 인정되었으며, 이러한 결과는 GOT, GPT등의 혈청학적 수치의 결과와 일치하였다. 그러나 마늘 extract 투여군에서의 간장 보호효과는 마늘분말보다도 미약하고 오히려 고농도 투여군인 10ml/kg 투여군에 비하여 저농도투여군인 1ml/kg에서 보다 뚜렷한 간장보호효과가 관찰되어 마늘 extract에 관한 약효, 약리작용에 관한 검토 및 독성에 관한 연구가 보다 필요한 것으로 사료되었다.

• 대한본초학회지
• /
• 제21권3호
• /
• pp.69-74
• /
• 2006

Objectives : This study was undertaken to determine if a combined(SPe) has a protective effect against functional failure induced by $CCl_4$ in rat liver. Methods : Acute liver injury which initiated from free radical induced by $CCl_4$, were applied to rats and data were obtained. Liver injury was estimated by measuring aspartate aminotransferase(AST) and alanine aminotransferase(ALT) activity in serum. Lipid peroxidation was examined by measuring malondialdehyde, a product of lipid peroxidation. GSH activities in liver tissues were also measured. Results : When rats were treated intraperitoneally with $CCl_4$, serum AST and ALT were increased compared with the control, which was significantly inhibited by pretreatment of SPe. SPe also prevented reduction in GSH induced by $CCl_4$. Conclusion : Above results suggest that SPe exerts protective effect against $CCl_4$ by its antioxidant action in liver tissues. Thus, SPe may be used in prevention and treatment of drug-induced liver cell injury. However, the precise mechanisms of SPe protection remain to be determined.

• 한국자원식물학회지
• /
• 제36권3호
• /
• pp.198-206
• /
• 2023

The effectiveness of the extracts of Alnus japonica and Portulaca oleracea, which are effective in improving alcohol-induced liver damage, was confirmed using acute and chronic alcoholic liver injury animal models. In the acute alcoholic liver injury model, dieting Alnus japonica and Portulaca oleracea complex (ALPOC) at a dose of 50 mg/kg showed no significant change in liver or body weight, while measured plasma ALT activity to be deficient (28.12 U/ml) compared to the alcohol intake group (42.5 U/ml), and confirmed that restored it to an average level. It showed an improvement of 34.9% compared to the alcohol intake group. AST activity confirmed that it showed a very effective liver protection activity by showing a gain of 12.6%. The chronic alcoholic liver damage animal model demonstrated that ALT showed an improvement effect of 25%, and AST showed an effect similar to that of the positive control group, Hovenia extract. In addition, through H&E staining analysis, observed that the ALPOC improved the necrosis and bleeding of the liver. And the ALPOC group showed intense antioxidant activity of 127% or more compared to the alcohol intake group, and this was confirmed to have a very high activity, which is more than 20% higher than that of the hovenia fruit extract.

• Journal of Radiation Protection and Research
• /
• 제40권1호
• /
• pp.25-35
• /
• 2015

We analyzed the differential effects of histopathology, apoptosis and expression of radiation response genes after chronic low dose rate (LDR) and acute high dose rate (HDR) radiation exposure in spleen, lung and liver of rats. Female 6-week-old Sprague-Dawley rats were used. For chronic low-dose whole body irradiation, rats were maintained for 14 days in a $^{60}Co$ gamma ray irradiated room and received a cumulative dose of 2 Gy or 5 Gy. Rats in the acute whole body exposure group were exposed to an equal dose of radiation delivered as a single pulse ($^{137}Cs$-gamma). At 24 hours after exposure, spleen, lung and liver tissues were extracted for histopathologic examination, western blotting and RT-PCR analysis. 1. The spleen showed the most dramatic differential response to acute and chronic exposure, with the induction of substantial tissue damage by HDR but not by LDR radiation. Effects of LDR radiation on the lung were only apparent at the higher dose (5 Gy), but not at lower dose (2 Gy). In the liver, HDR and LDR exposure induced a similar damage response at both doses. RT-PCR analysis identified cyclin G1 as a LDR-responsive gene in the spleen of rats exposed to 2 Gy and 5 Gy gamma radiation and in the lung of animals irradiated with 5 Gy. 2. The effects of LDR radiation differed among lung, liver, and spleen tissues. The spleen showed the greatest differential effect between HDR and LDR. The response to LDR radiation may involve expression of cyclin G1.

• Journal of Radiation Protection and Research
• /
• 제10권2호
• /
• pp.109-112
• /
• 1985

민들조개에 의해 흡수된 방사성 동위원소의 조직내 분포와 생화학적 거동을 알아 보기 위해 민들조개를 $^{65}Zn,\;^{54}Mn,\;^{137}Cs$ 용액에 7일간 노출시킨 후 조직을 잘라내서 방사능을 측정하고 간과 콩팥을 균질화시켜서 Sephadex G-75 유리판을 통한 젤투석 실험을 하였다. 방사성 동위원소의 조직내 분포는 방사성 동위원소에 따라 서로 다른 조직내 축적경향을 나타냈으며 특히 다른 조직에 비해 간과 콩팥에 아주 높게 농축되었다. 방사능이 농축된 간과 콩팥에서 방사성 동위원소와 결합하고 있는 단백질을 조사하기 위해서 간과 콩팥을 균질화시킨 상등액을 Sephadex G-75 column chromatography로 분리 한 결과 $^{65}Zn,\;^{54}Mn,\;^{137}Cs$가 서로 다른 유출 패턴을 나타냈고 또한 $^{65}Zn$과 $^{54}Mn$은 간과 콩팥에서 서로 다르게 유출되었다. 본 실험의 결과 방사성 동위원소의 종류와 조직에 따라서 결합하고 있는 단백질의 종류가 서로 다른 것을 알 수 있었다.

• 한국식품영양학회지
• /
• 제29권3호
• /
• pp.307-312
• /
• 2016

This study was performed to investigate the effects of Acer tegmentosum Maxim. extract (ATE) on non-alcoholic fatty liver in Sprague Dawley (SD) rats. During oral administration of ATE, non-alcoholic fatty liver was induced by treatment with DL-ethionine. The lipid, total cholesterol (T-CHO) and malondialdehyde (MDA) in the liver tissue of ATE-fed rats showed lower levels, as compared to ATE-unfed rats. In ATE-fed rats, the serum levels of alanine aminotransferase (ALT), aspartate aminotransferase (AST) and ${\gamma}$-glutamyl transferase (GGT) were lower than the case of ATE-unfed rats. Oil red staining of the liver showed that the lipid deposits were decreased by feeding ATE. These results strongly indicated that ATE has positive effects of protection against non-alcoholic fatty liver formation.

• 한국한의학연구원논문집
• /
• 제12권1호
• /
• pp.103-109
• /
• 2006

We investigated liver protection effect of the Hovenia dulcis Thunb extraction which has treated with carbon tetrachloride ($CCl_4$, 1.0 ML/kg) in SD male rat (20 weeks). We observed the amount of leukocyte, erythrocyte, hemoblobin and hematocrit are increased and the number of plaque is decreased for treatment of $CCl_4$, However, after treatment of Hovenia dulcis Thunb extraction (15 mL/kg), we have same result that of control group which has treated with $CCl_4$ The blood biological data showed that the value of AST (Aspartate aminotransferase), ALT(Alanine aminotransferase) and LDH (Lactate dehydronase) are increased significantly for the negative control group compared to that of control group. For experimental group, respectively, In addition, it was confirmed that the recovery effect of a mysterious death of an interstitial cell of the experimental group is to be compared to that of the negative control group for a sample of pathological tissue.

• 혜화의학회지
• /
• 제9권1호
• /
• pp.135-142
• /
• 2000

For the evaluation of protective effect on hepatic damage by Korean red ginseng mixed formula, we used GR(Korean red ginseng), GRF-A(Korean red ginseng-mixed formula) as a materials. The study was performed on protective effect against hepatic damage induced by $CCl_4$. In vitro assay with 1.1 mM galactosamine, protection(%) was 44%(GR), 58%(GRF-A) at 50ug/ml, while maxium protection(%) was 5%(GR) and 24% (GRF-A) against acute hepatotoxicity by $CCl_4$. GRF-A significantly protected ethanol induced-liver damage by lowering ALT and ALP and fatty degenertion in liver tissue.

• Natural Product Sciences
• /
• 제14권2호
• /
• pp.95-99
• /
• 2008

In a project to study the hepatroprotective effect of some plant extracts four plants Ephedra foliate Boiss, Alhagi maurorum Medikus, Capsella bursa-pastoris (L.) Medik. and Hibiscus sabdariffa L. were studied. The ethanol extract of the aerial part of the first three plants and the flowers of H. sabdariffa were subjected to hepatoprotective assays using Wistar albino rats. Liver injury induced in rats using carbon tetrachloride. The biochemical parameters; serum glutamate oxaloacetate transaminase (SGOT), serum glutamate pyruvate transaminase (SGPT), alkaline phosphatase (ALP) and total bilirubin were estimated as reflection of the liver condition. Based on the good results of the biochemical parameters measurements, histopathological study was performed on the liver of rats treated with E. foliate. The normal appearance of hepatocytes indicated a good protection of the extract from carbon tetrachloride hepatotoxicity. All the results were compared with silymarin, the reference hepatoprotective drug.