• Journal of Nutrition and Health
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• 제24권3호
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• pp.166-178
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• 1991

식이 중에 첨가된 conzyme $Q_{10}$이 ADR을 투여한 횐쥐의 체내 지질과산화대사에 미치는 영향을 규명하기 위하여 두가지 실험을 실시하였다. 실험1에서는 basal diet로 적응시킨 후 바로 4주간 실험식이를 공급함과 동시에 ADR을 투여하였으나 실험2에서는 coenzyme $Q_{10}$이 미리 섭취된 상태하에서 지질과산화에 대한 영향을 관찰하고자 basal diet로 적응시킨 다음 4주간 실험식이만을 급여한 후 다시 4주간 실험1과 같은 방법으로 ADR투여와 실험식이 공급을 병행하였다. 실험군은 실험1과 2에서 모두 ADR 2수준 (1.Omg/kg B.W./week. 2.0mg/kg B.W./week)과 coenzyme $Q_{10}$ 3수준(무첨 가군, 0.1g/kg diet 및 0.5g/kg diet)에 의한 6개의 실험군과 basal diet만을 공급하는 대조군을 설정하였다. 본 실험에서 얻어진 결과를 요약하면 혈장과 심장 mitochondria내의 과산화지질 함량은 수준별 ADR 투여에 의해 유의적으로 증가되었고 coenzyme $Q_{10}$ 첨가에 의하여 이러한 경향은 조절되었다. 실험2에 있어서 심장 mitochondria의 과산화지질 함량은 coenzyme $Q_{10}$의 첨가에 의해 실험1에 비하여 그 감소효과가 더욱 증대되었다. 지질과산화 대사에 관여하는 효소 활성도의 변화를 조사하기 위하여 적혈구와 심장조직내에서의 glutathione peroxidase (GSH-Px), superoxide dismutase(SOD)와 catalase 활성도를 측정하였다. 실험1에서 GSH-Px 활성도는 적혈구 내에서는 차이가 없었고 고수준의 ADR을 투여 한 실험군의 심장조직에서만 coenzyme $Q_{10}$에 의해 유의적으로 증가되었으며, SOD 활성도 역시 적혈구에서는 별다른 변화가 관찰되지 않았고 심장조직 내에서 ADR투여로 증가되었으나 coenzyme $Q_{10}$의 급여로 그 활성도가 더욱 유도되었다. Catalase의 활성도는 심장조직 내에서는 변화가 없었고. 적혈구내에서 ADR투여로 그 활성도가 증가되었으나 coenzyme $Q_{10}$의 급여는 그 활성도의 유도효과를 나타내지 못하였다. 실험2의 적혈구내에서는 GSH-Px활성도가 고수준의 ADR의 투여에 의해 유의적으로 감소된 것을 제외하고는 별다른 변화를 나타내지 않았다. 심장조직의 효소활성도에 있어서는 GSH-Px의 경우, 고수준의 coenzyme $Q_{10}$의 급여에 의해 유의적으로 증가 되었으며 SOD활성도는 ADR 투여에 의해 증가되었으나 coenzyme $Q_{10}$의 공급에 의해 더욱 유도되었다. 그러나 catalase 활성도는 모든 처리군들 사이에서 차이를 나타내지 않았다. 이상의 결과로 미루어보아 ADR투여로 유발되는 심장의 손상은 생체내 지질과산화반응의 유도가 중요한 원인이 되고 이는 coenzyme $Q_{10}$ 급여에 의해 유의적인 억제효과를 나타낼 수 있음을 알 수 있다.

• 한국식품저장유통학회지
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• 제13권6호
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• pp.774-782
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• 2006

연근 에탄올 추출물이 알코올 투여로 유발된 간 손상에 미치는 영향을 알아보기 위하여 흰쥐에게 기본식이군 (BD), 알코올 투여군 (ET), 기본식이와 연근 에탄올 추출물 저용량 (200 mg/kg) 투여군 (BD-LREL), 기본식이와 연근 에탄올 추출물 고용량 (400 mg/kg) 투여군 (BD-LREL), 알코올과 연근 에탄올 추출물 저용량 (200 mg/kg) 병합 투여군 (ET-LREL) 및 알코올과 연근 에탄올 추출물 고용량 (400 mg/kg) 병합 투여군 (ET-LREH)의 6군으로 나누어 6주간 사육하였다. 체중증가량은 알코올 단독 투여군 (ET)이 기본식이군 (BD)에 비하여 감소되었으나 유의차가 없었다. 알코올과 연근 에탄올 추출물 저용량 (ET-LREL)과 고용량(ET-LREH) 병합 투여군은 알코올 투여로 감소된 체중을 기본식이군 (BD)에 근접하게 증가시켰다. 식이효율은 알코올 단독 투여군 (ET)이 기본식이군 (BD)에 비하여 유의하게 저하되었으나, 알코올 단독 투여군 (ET)을 제외한 모든 실험군의 식이효율은 유사하였다. 알코올 투여로 증가된 혈청 중 AST, ALT및 ALP 활성은 연근 에탄올 추출물 경구 투여로 저하되었다. 간조직 중 XO 활성은 알코올 단독투여군 (ET)이 기본식이군 (BD)에 비하여 유의하게 증가되었고 연근 에탄올 추출물 투여로 알코올 투여로 증가된 XO 활성을 용량 의존적으로 감소시켰다. 간조직 중 SOD와 GSH-Px 활성은 알코올 단독 투여군 (ET)이 기본식이군 (BD)에 비하여 현저히 증가되었는데 이는 알코올 투여로 생성된 활성 산소를 소거하려는 생리 적응 현상으로 사료되며, 연근 에탄올 추출물 투여로 SOD 활성이 용량 의존적으로 유의하게 감소하였다. 간조직 중 catalase 활성도 알코올 단독 투여군 (ET)이 기본식이군 (BD)에 비하여 유의하게 증가되었으나 연근 에탄올 추출물 투여로 증가된 활성을 용량 의존적으로 감소시켰지만 유의차는 없었다. 간조직 중 GSH 함량은 알코올 단독 투여군 (ET)이 기본식이군 (BD)에 비하여 유의하게 감소되었으며, 알코올과 연근 에탄올 추출물 고용량 투여군 (ET-LREH)은 알코올 투여로 감소된 GSH 함량을 기본식이군 (BD)에 근접토록 증가시켰다. 간조직 중 과산화지질 함량은 알코올 단독 투여군 (ET)이 기본식이군 (BD)에 비하여 증가되었으나, 알코올과 연근 에탄올 추출물 고용량 병합 투여군 (ET-LREH)은 알코올 투여로 증가된 과산화지질 함량을 유의하게 저하시켰다. 이상의 결과 연근 에탄올 추출물은 알코올 투여로 증가된 혈청 AST, ALT 및 ALP 활성과 간조직의 과산화지질 함량, XO, SOD, GSH-Px 및 catalase 활성을 저하시켜 알코올로 유도된 지방간 및 손상된 간조직을 보호하는 항산화효과가 있는 것으로 추정된다.

• 생명과학회지
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• 제20권7호
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• pp.1134-1142
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• 2010

본 연구는 고콜레스테롤식이를 급여한 흰쥐에게 동일 품종의 국산 원료 대두로부터 제조된 감압 증자한 대두분말 혹은 B. subtilis DJI 균주로 접종 후 천일염을 첨가하여 제조한 된장분말을 함께 급여하였을 경우 혈청 중 콜레스테롤 저하효과와 간 조직 중 항산화효과에 미치는 영향을 알아보고자 실시하였다. 실험군은 정상군(N), 고콜레스테롤군(HC), 고콜레스테롤과 대두분말식이군(SHC) 및 고콜레스테롤과 DJI 된장분말식이군(DHC)으로 나누어 4주간 실시하였다. 체중증가량과 식이섭취량은 SHC군과 DHC군이 HC군과 N군에 비하여 유의하게 감소되었다(p<0.05). 식이효율은 실험군 간에 유의적인 차이가 없었다. 혈청 중 AST, ALT 및 ALP활성은 고콜레스테롤과 대두 혹은 된장분말을 함께 급여한 SHC군과 DHC군이 고콜레스테롤 만을 급여한 HC군에 비하여 저하되었으며(p<0.05), N군과는 비슷한 활성을 나타내었다. 혈청 중 중성지질, 총콜레스테롤 및 LDL-콜레스테롤 함량은 HC군에 비하여 SHC군과 DHC군에서 유의적으로 감소되는 경향이었고(p<0.05), HDL-콜레스테롤 함량은 증가하는 경향을 보였다. 대두 혹은 된장분말을 함께 급여하였을 경우 고콜레스테롤식이로 증가된 간 조직 중 유리기해독계 효소인 catalase 및 GSH-Px 활성 억제와 항산화작용을 나타내는 GSH 함량을 증가시킴으로서 지질과산화물에 대한 방어력이 증가되었다. 콜레스테롤 저하 및 항산화효과는 대두분말과 된장분말 간에 차이가 거의 없었다. 이상의 결과 대두 혹은 된장분말은 고콜레스테롤식이로 유도된 산화적 손상에 대한 간 보호효과와 혈청 중 콜레스테롤 저하효과가 있는 것을 알 수 있었다.

• Journal of Nutrition and Health
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• 제34권3호
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• pp.285-298
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• 2001

The effects of dried leaf powders and water and ethanol extracts of persimmon and green tea on lipid metabolism, lipid peroxidation and antioxidative enzyme activity were investigated in 12-month-old rats. Forty-nine male Sprague-Dawley rats weighing 520$\pm$19g were blocked into seven groups according to body weight. Rats were raised for four weeks with control(no tea leaf powder or extracts) and experimental diets containing either 5%(w/w) dried leaf powders of persimmon(Diospyros kaki Thunb) or green tea(Camellia sinensis O. Ktze), or water or ethanol extract from equal amounts of each dried tea powder. Food intakes of all tea diet groups were higher than that of control. Weight gains and food efficiency ratios of all tea diet groups were not significantly different from those of control. All tea diets decreased plasma triglyceride level, especially, green tea powder and persimmon ethanol diets were more effective than other diet. All the tea diet groups showed decrease in liver triglyceride level, and persimmon powder and ethanol extract increased fecal triglyceride excretion. Plasma cholesterol levels of all the tea diet groups were not significantly different from the control, but control. Fecal cholesterliver cholesterol concegroups were significantlntrations of all tea y lower than that of ol excretions of persimmon powder, green tea ethanol extract, persommon ethanol extract and green tea ethanol extract groups were significantly higher than that of control. Plasma and liver thiobarbituric acid reactive substance(TBARS) concentrations of all the tea diet groups were lower than that of control. Especially, plasma TBARS concentrations of green tea powder and persimmon ethanol extract groups were sinificantly low. Red blood cell(RBC) superoxide dismutase(SOD) activities of persimmon ethanol extract and green tea water extract groups were increased, and RBC catalase activities of all experimental groups were not significantly different. RBC glutathione peroxidase(GSH-px) activities of persimmon ethanol extract, persimmon water extract and green tea powder groups were increased. Liver SOD activities of all the tea diet groups except green tea ethanol extract group were higher than that of control. Liver catalase activities of all experimental groups were not significantly different, and liver GSH-px activity of green tea powder group was significantly higher than that of control. In conclusion, dried leaf powders, and water and ethanol extracts of persimmon and green tea were effective in lowering lipid level, inhibiting lipid peroxidation and increasing antioxdative enzyme activities in 12-month-old rat. Green tea leaf powder with high contents of flavonoids and water soluble dietar fiber was most effective in lowering plasma triglyceride, cholesterol and TBARS level. (Korean J Nutrition 34(3) : 285~298, 2001)

• 생약학회지
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• 제34권2호통권133호
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• pp.161-165
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• 2003

Ethanol extract from Thesium chinense Tunczaninov (TCTE) was tested for breast cancer chemopreventive activity by measuring 7,12-dimethylbenz[a]anthracene (DMBA) - induced cytochrome P450 1A1 activity, induction of quinone reductase and glutathione S-transferase, and glutathione level. TCTE significantly inhibited cytochrome P45O 1A1 activity at the concentration of 90 and 150 mg/ml. TCTE induced quinone reductase activity in a dose-dependent manner in a concentration range of 3-150 mg/ml. In addition glutathione S-transferase activity and glutathione level were increased with TCTE in cultured murine hepatoma Hepa1c1c7 cells. These results suggest that TCTE has breast cancer chemopreventive potential by inhibiting cytochrome P45O 1A1 activity, inducing quinone reductase and glutathione S-transferase activities, and increasing GSH level.

• 대한한의학방제학회지
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• 제8권1호
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• pp.129-146
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• 2000

This study was carried out to investigate the effects of Solanum lyratum Extract (SLE) on the recovery of liver in $CCI_{4}-intoxicated$ mice. In this study, ICR-Mice were divided into 3 experimental groups; Normal group was fed basal diet and was fed bassal diet for 2 Weeks, sample group was injected $CCl_{4}\;(0.6m{\ell}/kg)$ and was fed basal diet for 2 weeks, sample group was injected $CCl_{4}\;(0.6m{\ell}/kg)$ and was fed the SLE 500mg/kg fod 2 Weeks. In sample group, the level of serum AST, ALT, ALP activity decreased significantly compared with control group. This results suggest that SLE has appreciable therapeutic effect on $CCI_4$ induced hepatotoxicity. In sample group, the level of LPO in liver homogenates decreased significantly compared with control group. In sample group. the level of GSH, catalase in liver homogenates increased significantly compared with control group. This results suggest that SLE has appreciable antioxidant effect on $CCI_4induced hepatotoxicity. In conclusion the results suggest that SLE has appreciable therapeutic effect and antioxidant effect on $CCI_4$ induced hepatotoxicity.

• Journal of Nutrition and Health
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• 제34권8호
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• pp.858-864
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• 2001

The study was designed to observe an antioxidant activities of conjugated linoleic acid(CLA) in rat liver by determining the activities of antioxidative enzymes(superoxide dismutase, glutathione peroxidase, catalase) and the levels of tocopherol and thiobarbituric acid reactive substance(TBARS). Male Sprague Dawley rats at weeks-old were divided into groups according to the types of dietary fat(beef tallow and fish oil) and then each group was subdivided into groups depending on CLA supplement. All rats were fed experimental diet containing 12% total fat including 1% CLA by weight for 30 weeks. CLA supplemented to beef tallow diet did not have significant effect on the level of TBARS and tocopherol. The level of TBARS was significantly increased in fish oil diet(highly unsaturated fat diet), but its level was significantly reduced by increasing SOD and GSH-Px activities when CLA was supplemented to fish oil diet so that CLA showed a sparing action of tocopherol in tissue. CLA did not have significant effect on peroxisomal catalase activities, but its activity was significantly increased when TBARS production was high in the fish oil diet. CLA could be incorporated into phospholipid of microsomal membrane, and interfered the conversions of C18 : 0 into C18 : 1 and C18 : 2 into C20 : 4 in liver. In conclusion, CLA had an antioxidant activities depending on the type of fat in diet. Therefore, it could be recommended to use CLA when highly unsaturated fat was used in meal preparation.

• Toxicological Research
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• 제26권4호
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• pp.267-273
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• 2010

As the use of carbon fullerene increases in the chemical industry, the concern over its biological and toxicological effects is also increasing. In this study, the suspension of carbon fullerene (C60) in phosphate buffered saline was prepared and toxicity was investigated using cultured RAW 264.7 and in intraperitoneally injected mice, respectively. The average size of carbon fullerene in the suspension was $53.7{\pm}26.5nm$ when determined by particle size analyzer. Cell viability was significantly decreased by the exposure of carbon fullerene ($0.25\sim2.00\;{\mu}g/ml$) for 96 hrs in the cultured RAW 264.7 cells. Intracellular reduced glutathione (GSH) level was also decreased compared to the level of the non-treated control group during the exposure period, while the level of nitric oxide was increased. When mice were intraperitoneally injected with carbon fullerene, serum cytokine levels of IL-1 and IL-6 were increased with the increased expression of inflammatory genes in peritoneal macrophage and T cell distribution in blood lymphocytes. The results suggested inflammatory responses were induced by carbon fullerene.

• Molecules and Cells
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• 제22권1호
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• pp.113-118
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• 2006

Thioredoxin reductase (TrxR), a component of the redox control system involving thioredoxin (Trx), is implicated in defense against oxidative stress, control of cell growth and proliferation, and regulation of apoptosis. In the present study a stable transfectant was made by introducing the vector pcDNA3.0 harboring the fission yeast TrxR gene into COS-7 African green monkey kidney fibroblast cells. The exogenous TrxR gene led to an increase in TrxR activity of up to 3.2-fold but did not affect glutathione (GSH) content, or glutaredoxin and caspase-3 activities. Levels of reactive oxygen species (ROS), but not those of nitric oxide (NO), were reduced. Conversely, 1-chloro-2,4-dinitrobezene (CDNB), an irreversible inhibitor of mammalian TrxR, enhanced ROS levels in the COS-7 cells. After treatment with hydrogen peroxide, the level of intracellular ROS was lower in the transfectants than in the vector control cells. These results confirm that TrxR is a crucial determinant of the level of cellular ROS during oxidative stress as well as in the normal state.

• 혜화의학회지
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• 제16권2호
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• pp.327-348
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• 2007

The purpose of this study is to investigate the effect of oral administration of NokYongDaebotang (NYD) on aging in rats. To observe the anti-aging effect of NYD, we performed blood chemistry analysis, histological analysis, and evaluated the levels of SOD, catalase, glutathione, NO and MDA in liver and other organ. The results were as follows : 1. The levels of serum Albumin and GOT was reduced significantly in the NYD group as compared with the nornal group. 2. Serum Total bilirubin level was increased in the NYD group as compared with the nornal group. 3. Serum LDL-cholesterol level was reduced significantly in the NYD group as compared with the nornal group. 4. The level of GSH and SOD activityin liver were significantly higher in 52 w-NYD group than that of 52 w-normal group. 5. The levels of NO were reduced significantly in 52 w-NYD group as compared with 52 w-normal group. In conclusion, NYD decoction is considered to have an anti-aging effect in rats.