Jo, Yun Ho;Lee, Hwan;Oh, Myeong Hwan;Lee, Gyeong Hee;Lee, You Jin;Lee, Ji Sun;Kim, Min Jung;Kim, Won Yong;Kim, Jin Seong;Yoo, Dae Seok;Cho, Sang Won;Cha, Seon Woo;Pyo, Mi Kyung
Nutrition Research and Practice
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v.14
no.4
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pp.334-351
/
2020
BACKGROUND/OBJECTIVES: This study was designed to investigate the improvement effect of white ginseng extract (GS-KG9) on D-galactosamine (Ga1N)-induced oxidative stress and liver injury. SUBJECTS/METHODS: Sixty Sprague-Dawley rats were divided into 6 groups. Rats were orally administrated with GS-KG9 (300, 500, or 700 mg/kg) or silymarin (25 mg/kg) for 2 weeks. The rats of the GS-KG9- and silymarin-treated groups and a control group were then intraperitoneally injected Ga1N at a concentration of 650 mg/kg for 4 days. To investigate the protective effect of GS-KG9 against GalN-induced liver injury, blood liver function indicators, anti-oxidative stress indicators, and histopathological features were analyzed. RESULTS: Serum biochemical analysis indicated that GS-KG9 ameliorated the elevation of aspartate aminotransferase (AST), alanine aminotransferase (ALT), alkaline phosphatase (ALP), and lactate dehydrogenase (LDH) in GalN-treated rats. The hepatoprotective effects of GS-KG9 involved enhancing components of the hepatic antioxidant defense system, including glutathione, glutathione peroxidase (GPx), superoxide dismutase (SOD), and catalase (CAT). In addition, GS-KG9 treatment inhibited reactive oxygen species (ROS) production induced by GalN treatment in hepatocytes and significantly increased the expression levels of nuclear factor erythroid-2-related factor 2 (Nrf2) and heme oxygenase-1 (HO-1) proteins, which are antioxidant proteins. In particular, by histological analyses bases on hematoxylin and eosin, Masson's trichrome, α-smooth muscle actin, and transforming growth factor-β1 staining, we determined that the administration of 500 mg/kg GS-KG9 inhibited hepatic inflammation and fibrosis due to the excessive accumulation of collagen. CONCLUSIONS: These findings demonstrate that GS-KG9 improves GalN-induced liver inflammation, necrosis, and fibrosis by attenuating oxidative stress. Therefore, GS-KG9 may be considered a useful candidate in the development of a natural preventive agent against liver injury.
This study is conducted to determine the effects of dietary levels of corn and tuna oils on the formation of preneoplastic lesions in die-thylnitrosamine (DEN) induced rat hepatocarcinogenesis. Weanling male Sprague-Dawley rats were fed 2.5, 5, 15, 25% (w/w) corn or tuna oils. Hepatocellular carcinogenesis was induced by DEN (200 mg/kg body weight) and two-thirds partial hepactectomy was carried out 3 weeks later and were sacrificed 8 weeks after DEN initiation. Tuna oil group showed smaller area of placental glutathione S-transferase (GST-P) positive foci than com oil group. Com oil group of 25% (w/w) showed the widest area of GST -P positive foci, and tuna oil group showed significantly smaller area of GST-P positive foci than com oil in 25% (w/w) level but had no differences between oil levels. Thio-barbituric acid reactive substances (TBARS) content was the highest in 25% (w/w) level of tuna oil group fed long chain and highly polyunsaturated fatty acids. Also serum ${\gamma}$ -glutamyltranspeptidase (GGT) activities in 25% level of tuna oil group were significantly higher than by other levels. As oil contents increased, glucose 6-phosphatase (G6Pase) seems to decrease in com oil groups but remained the same in tuna oil groups. Glutathione reductase (GR) activities were significantly higher in tuna oil group, and the higher the level of tuna oil, the higher GR activities. But Cu/Zn superoxide dismutase (SOD) and glutathione peroxidase (GPx) activities didn't seem to be influenced by levels and kind of dietary fats. Therefore, as oil levels increased, com oil rich in n-6 fatty acids promoted carcinogenesis but tuna oil rich in eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) of n-3 fatty acids suppressed. Although lipid peroxidation products were elevated in 25% (w/w) tuna oil group, GST-P positive foci didn't increase. Therefore pre-neoplastic lesions might be reduced through mediation of a lipid peroxidation process in tuna oil. As fat contents of tuna oil increased, elevated GR activities may give a rise to produce more reduced glutathione in order to protect against free radical attack, and high G6Pase activities remained the same and they contributed to membrane stability. So tuna oil diet seems to protect hepatocarcinogenesis.
The present work was undertaken to address the role of protein disulfide isomerase 2 (Pdi2) in the mercury-tolerance of Schizosaccharomyces pombe, using the Pdi2-overexpressing recombinant plasmid pYPDI2 and the corresponding vector plasmid pRS316. When exposed to mercuric chloride, the PDI2 overepxression cells grew significantly better than the vector control cells. They revealed the lower levels of intracellular reactive oxygen species (ROS) and nitric oxide (NO), when incubated with mercuric chloride for 6 h, than the vector control cells. The PDI2 overepxression cells contained the higher levels of total glutathione (GSH) and superoxide dismutase (SOD) activity than the vector control cells, after 6 h of incubation in mercuric chloride. However, the PDI2 overepxression cells contained similar levels of glutathione peroxidase (GPx) activities, compared to those of the vector control cells. Taken together, the S. pombe Pdi2 promotes the tolerance against mercury toxicity through up-regulating total GSH and SOD and subsequently attenuating ROS and NO elevations.
Objectives : The aim of present study was to evaluate the beneficial effect of Scutellariae Radix (SR) and Scutellariae Radix EtOH-heated at 200℃ (SR200) using lipopolysaccharide (LPS) treated intestine of mice.Methods : Extract of SR and SR200 were orally administrated. Their effects were compared with vehicletreated LPS and normal groups. Subsequently, we measured reactive oxygen species (ROS) and nitric oxide in the serum and western blotting in the intestine.Results : The average weight in LPS treated (Vehicle) group was lowered significantly compare to that in non-treated normal group and this weight loss in the vehicle group was effectively prevented by the administration of SR and SR200 respectively. The increased oxidative stress biomarker levels such as reactive oxygen species (ROS) and nitric oxide (NO) in the serum was markedly decreased by treated with SR200. The decreased levels of superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GPx) induced by LPS injection were significantly restored by both SR and SR200 treatment. Moreover, increased inflammatory mediators and cytokines such as inducible nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2), tumor necrosis factor alpha (TNF-α) and interleukin-6 (IL-6) in the LPS treated vehicle mice were significantly decreased through down-regulation c-JUN through reduction of oxidative stress.Conclusions : SR and SR200 could have benefit effect through down-regulation of abnormal oxidative stress in LPS induced intestine injury mice. Moreover, The anti-inflammatory activity of SR200 extract was better than SR extract in the LPS induced intestine injury mice.
This study was performed to investigate the protective effects of acupuncture on the liver in the oxidative stress caused by cadmium accumulation. Sprague-Dawley male($150{\pm}30g$) rats were stabilized for a week and divided into 5 groups which is normal, control, $LR_3$ acupuncture, $BL_{23}$ acupuncture and sham acupuncture group. For three days experimental groups were received oral doses of cadmium 2 mg/kg twice a day. Acupuncture was given bilaterally at each point 10 times for two weeks. The depth of stimulation was 1 mm at right angles and torsion of acupuncture was produced 2 times per second for 1 minutes. The liver was shipped off and taken weight at the last day of two weeks, and hepatic functions was confirmed through alanine transaminase(ALT) and aspartate amino-transferase(AST). We measured reactive oxygen species of serum, liver and kidney, and compared expression levels of superoxide dismutase(SOD), catalase, glutathione peroxidase(Gpx), nuclear factor erythroid derived 2-related factor 2(Nrf-2), heme oxygenase-1(HO-1), nuclear factor-${\kappa}B$ (NF-${\kappa}B$), cyclooxygenase-2(COX-2), inducible nitric oxide synthase(iNOS), Bax and Cytochrome c. $BL_{23}$ acupuncture group significantly increased liver weight and decreased ALT compared to control group. For the oxidative stress, $LR_3$ acupuncture group significantly reduced reactive oxygen species, and $BL_{23}$ acupuncture group significantly reduced reactive oxygen species and inflammation-related protein compared to control group. But $LR_3$ acupuncture group and $BL_{23}$ acupuncture group didn't significantly reduce apoptosis-related protein. Therefore $LR_3$ and $BL_{23}$ acupuncture showed the effects of antioxidant and anti-inflammatory, especially $BL_{23}$ acupuncture was more effective than $LR_3$ acupuncture on the protection of liver in the oxidative stress.
Baek, Kyungmin;An, Yu-min;Shin, Mi-Rae;Kim, Min Ju;Lee, Jin A;Ro, Seong-Soo
The Journal of Internal Korean Medicine
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v.41
no.1
/
pp.1-13
/
2020
Objectives: Osteoarthritis (OA) is a chronic and degenerative joint disease characterized by progressive degeneration of articular cartilage. Inflammation is a recognized and important factor of OA progression. The present study was designed to investigate the protective effect of Corni Fructus water extract (CFW) on a monosodium iodoacetate (MIA)-induced rat model of OA. Methods: Osteoarthritis was induced by injection of MIA (50 µL; 80 mg/mL) into the knee joint cavity of rats. After an adaptation period for seven days, the rats were divided into 4 groups (n=8/group): normal, control, indomethacin-treated (5 mg/kg), and CFW-treated (200 mg/kg) groups. The rats were treated orally for 14 days. Pain was evaluated by determining hind paw weight distribution. For biochemical analyses, we measured the changes in reactive oxygen species (ROS) and peroxynitrite (ONOO-) in the knee joint. The presence of anti-oxidant proteins and inflammatory proteins was determined by western blotting. Results: The administration of CFW significantly improved the hind paw weight distribution. The ROS and ONOO- levels of knee joint were significantly decreased in the CFW group. CFW inhibited the production of inflammatory mediators, such as COX-2, and inflammatory cytokines, including IL-6 and IL-1β, via the NF-κB signaling pathway. The expression of anti-oxidant enzymes, such as catalase and GPx-1/2 also increased significantly. Conclusions: The findings indicate that CFW has a therapeutic and protective effect on OA by suppression of inflammation. Therefore, CFW could represent a potential and effective candidate for OA treatment.
Kim, In-Hye;Cho, Kang-Jin;Ko, Jeong-Sook;Kim, Jae-Hyun;Om, Ae-Son
The Korean Journal of Food And Nutrition
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v.25
no.1
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pp.123-131
/
2012
The objective of the present study was to evaluate the potential antidiabetic and antioxidant effect of the ethanol extract from Chrysanthemum cornarium L. var. spatiosum(CSE) against alloxan-induced oxidative stress in pancreatic ${\beta}$-cells, HIT-T15. In this study, the antidiabetic effect of CSE was examined using the 3-(4,5-dimethylthiazolyl-2)-2,5-diphenyltetrazoliu bromide(MTT) cell proliferation assay, lactate dehydrogenase(LDH) release assay, $NAD^+$/NADH ratio and insulin secretion. To further investigate whether CSE is involved in the antioxidant activity of alloxan-damaged HIT-T15 cells, its antioxidant effect against alloxan-induced oxidative stress was measured in HIT-T15 cells by determining the levels of antioxidant enzymes including superoxide dismutase(SOD), glutathione S-transferase(GST), glutathione reductase(GR) and glutathione peroxidase(GPx). The results of this analysis showed that alloxan significantly decreased cell viability, increased LDH leakage, and lowered $NAD^+$/NADH ratio and insulin secretion in HIT-T15 cells. However, CSE significantly increased the viability of alloxan-treated cells and lowered LDH leakage. The intracellular NAD+/NADH ratio and insulin secretion were also significantly increased by 1.7-fold and 1.3-fold, respectively, after treatment with 100 ${\mu}g/m{\ell}$ CSE. The HIT-T15 cells treated with alloxan showed significant decreases in the activities of antioxidant enzymes, while CSE significantly elevated the levels of antioxidant enzymes. These findings suggest that CSE could have a protective effect against cytotoxicity and dysfunction of pancreatic cells in the presence of alloxan-induced oxidative stress.
Journal of the Korean Society of Food Science and Nutrition
/
v.41
no.8
/
pp.1106-1111
/
2012
It is shown that the risk of chronic disease is increased not only by the concentration of fat in the diet but also by the composition of dietary fatty acids. We investigated the anti-oxidant effects of vitamin E on dietary polyunsaturated fatty acid-fed mice. Ninety male Sprague-Dawley rats were randomly divided into 9 groups: a normal diet group (C), 4 dietary polyunsaturated fatty acid diet groups (OA, LA, LNA, DHA), and 4 dietary polyunsaturated fatty acid diet with 0.05% vitamin E groups (OAE, LAE, LNAE, DHAE). The food efficiency in the dietary polyunsaturated fatty acid diet groups was higher than in the normal diet groups. The concentration of malondialdehyde (MDA) was significantly increased by LA and DHA fatty acids. Vitamin E significantly decreased LA and LHA-induced lipid peroxidation. The activity of superoxide dismutase and glutathione peroxidase was increased in the dietary polyunsaturated fatty acid diet groups compared to the control group, while these were decreased by supplements with vitamin E, except in the OAE group. Also, the protein expression of CYP2E1 was significantly increased in only the LNA group, while these were decreased by supplements with vitamin E. These results taken together indicate that vitamin E may have positive effects on a dietary polyunsaturated fatty acid diet-induced oxidative stress in brain tissue.
Kim, Min Ju;Shin, Mi-Rae;Lee, Jin A;Park, Soon-Ae;Park, Hae-Jin;Lee, Jeong Hoon;Roh, Seong-Soo
The Korea Journal of Herbology
/
v.35
no.6
/
pp.21-28
/
2020
Objectives : The objective of this study was to investigate the improvement effect of Sprout of Coix lacryma-jobi var. mayuen Stapf water extract (SC) on the dextran sulfate sodium (DSS)-induced ulcerative colitis mice. Methods : The antioxidant activity of SC was measured through total polyphenol and total flavonoid content in vitro. The experiment was conducted with seven-week-old male Balb/c mice. After 1 week adaptation, acute colitis was induced by oral administration of 5% DSS dissolved in drinking water, for 7 days. And normal mice received drinking water without DSS throughout the entire experimental period. For each experiment, the mice were divided into 4 groups and 24 colitis mice were arbitrarily allocated into 3 groups (n = 8/group); Normal group, Control group, SC 100 mg/kg treated group (SCL), SC 200 mg/kg treated group (SCH). Serum and colon tissues were collected after one weeks of drug administration. Results : ROS levels, ONOO- levels, AST, and ALT in serum were decreased in SC treated groups compared to the control group. Western blotting measurements of Nrf2, HO-1, SOD, catalase, GPx-1/2, IL-4, IL-10, and Bcl2 showed that the SC treated groups was increased compared to the Control group. Also, western blot measurements of NF-κBp65, p-IκBα, COX-2, iNOS, TNF-α, IL-1β, Bax, and Caspase-3 showed that the SC treated groups was reduced compared to the Control group. Conclusion : Taken together, these results suggest that SC treatment can attenuate the DSS-induced colitis though inhibiting NF-κB pathway and enhancing Nrf2 pathway. Therefore, SC was the potential to be used as a natural therapeutic drug.
Stress will induce various changes in human metabolism. The remarkable phenomenon of these changes is increased energy metabolism that can induce many reactive oxygen species (ROS) production. ROS can peroxidize cellular macromolecules including lipid and protein. The object of this study was to investigate that stress may induce cellular damage by producing ROS and that Rooibos tea can protect cells against reactive oxygen species by immobilization stress in SD rat. The stress group significantly increased in 5-hydroxyindole acetic acid (5-HIAA), one of the stress hormone. Rooibos tea treatment had no effects on 5-HIAA contents, but body weight of Rooibos tea treated rat more increased than that of only the stress group. It was suggested that Rooibos tea colud not affect stress response itself, but protect against the another mechanism. We thought that the oxidative damage was caused by increased energy metabolism. Protein degradation level and lipid peroxide formation on index of oxidative damage significantly increased in the stress group. But the stress-induced activity change could not be observed in antioxidative enzymes such as superoxide dismutase, glutathione peroxidase and glutathione reductase. But the catalase activity of the brain significantly was inhibited by the stress. From these results, it was suggested that the immobilization stress induce the brain oxidative damage. However the oxidative damage was inhibited by feeding Rooibos tea containing various antioxidants, such as polyphenol, flavonoid and so on. Therefore, Rooibos tea have the protective effects against the stress caused by the ROS mediated cellular damage.
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