• Biotechnology and Bioprocess Engineering:BBE
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• 제11권1호
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• pp.13-18
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• 2006

The antioxidant activity of the extract of Erigeron annuus was assessed by means of two different in vitro tests: bleaching of the stable 1,1-diphenyl-2-picrylhydrazyl radical (DPPH test) and the scavenging of authentic peroxynitrite in company with peroxynitrite generation from 3-morpholinosydnonimine (SIN-1). In both tests, the 85% aq. MeOH and n-BuOH soluble fractions of the crude extract showed a significant scavenging effect on peroxynitrite and DPPH radical in comparison to L-ascorbic acid. And bioassay-guided fractionation of the n-BuOH soluble fraction led to the isolation of three compounds: Apigenin (1), quercetin-3-O-glucoside (2), and caffeic acid (3). The structures of the isolated compounds were elucidated on the basis of their spectroscopic data and their antioxidant activities were measured by determining their capacity to scavenge peroxynitrite and the DPPH radical.

• Archives of Pharmacal Research
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• 제28권10호
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• pp.1127-1130
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• 2005

A new phenolic glucoside (1), pursargentoside, was isolated from the leaves of Prunus serrulata var. spontanea, along with three other known compounds, orobol 7-O-glucoside (2), $1{\beta}$, $2{\alpha}$, $3{\alpha}$, 24-tetrahydroxy-urs-12-en-28-oic acid (3), and chlorogenic acid (4). The structure of pursargentoside (1) was identified by spectroscopic data analysis including 1D and 2D NMR spectroscopy, as 2-O-${\beta}$-(6'-benzoyl)-glucopyranosyl o-(Z)-coumaric acid. Compounds 1, 2, and 4 exhibited ONOO- scavenging activity, whereas compound 3 was determined to be virtually inactive.

• Journal of Life Science
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• 제15권1호
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• pp.106-111
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• 2005

To investigate the antioxidant activity of extract from the raw walnut, Juglans sinensis Dode, we prepared five fractions (methanol (MeOH), dichloromethane $(CH_2Cl_2)$, ethyl acetate (EtOAc), n-buthanol (n-BuOH) and dehydrogen monooxide $(H_2O)$ fractions) and examined. The effect of walnut extract on the oxidative stress was investigated in vitro. The DPPH (2,2-Di (4-tert-octylphenyl)-1-picrylhydrazyl) free radical scavenging activity of extract from raw walnut was shown in the following order: $EtOAc\;fraction layer. The result showed that the highest activity $(0.56{\mu}g/ml,\;IC_{50}.)$ was observed in EtOAc fraction, whereas n-BuOH fraction, MeOH fraction, $CH_2O_2$ fraction and $H_2O$ layer of $IC_{50}$ were $2.34{\mu}g//ml,\;3.88{\mu}g/ml,\;8.06{\mu}g/ml,\;and\;8.19{\mu}g/ml$, respectively. The radical scavenging activity assay of each fraction showed that the antioxidative activity was observed in the following order: EtOAc fraction $(74.27\pm1.56\%)>MeOH\;fraction\;(60.76\pm3.4\%)>n-BuOH\;fraction\;(59.32\pm0.88\%)>H_2O\;layer\;(41.69\pm2.06\%)$. These results revealed that all fractions, except for $CH_2Cl_2$ fraction, showed high antioxidative activity. Furthermore, the peroxynitrite $(ONOO^-)$ scavenging activity was assayed in each fraction. The result showed that the $ONOO^-$ scavenging activity of EtOAc fraction, MeOH fraction and n-BuOH fraction from raw walnut was $95.14\pm0.36\%,\; 90.02\pm1.19\%\;and\;89.41\pm0.81\%$, respectively. The tert-butylhydroperoxide (t-BHP) treatment in vitro increased lactate dehydrogenase release and lipid peroxidation in renal cortical slices. Such changes were completely prevented by addition of MeOH fraction, EtOAc fraction and n-BuOH fraction of walnut. These results indicate that the walnut extract exerts the benedicial effect against t-BHP-induced cell injury and its effect may be due to antioxidant action. In addition, it is suggested that walnut extract might be developed as the effective scavenger for the prevention of oxidative stress.

• Korean Journal of Food Science and Technology
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• 제49권2호
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• pp.203-208
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• 2017

The antioxidant and anti-inflammatory effects of roasted dried radish (RDR) against renal oxidative stress were examined in high-fat diet (HFD)-fed mice. The HFD was prepared by adding lard to chow diet to provide 50% of the calories from fat. Hot water extracts of dried radish (DR) or RDR were administered orally to mice at 237 mg/kg bw/day, whereas distilled water was administered as a vehicle for 12 weeks. Compared to the control group, renal reactive oxygen species, peroxynitrite, and thiobarbituric acid reactive substance level in the DR or RDR group were significantly decreased, whereas the glutathione level was increased (p<0.05). Protein expressions of antioxidant factors such as nuclear factor erythroid 2-related factor-2, heme oxygenase-1, glutathione S-transferase, superoxide dismutase, catalase, and glutathione peroxidase were significantly increased in the DR and RDR groups; however, nuclear factor-kappa B expression was suppressed (p<0.05). These antioxidant and anti-inflammatory effects of RDR were found to be significantly greater than those of DR.

• Journal of the Korean Society of Food Science and Nutrition
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• 제41권1호
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• pp.20-25
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• 2012

This study was performed to investigate antimicrobial, antioxidant, and anticancer properties of Opuntia humifusa (OH) stems. OH stems were extracted with hexane, methanol, butanol and water. The methanol and hexane fraction exhibited strong antimicrobial activities on three strains of microbes, Rhodococcus equi, Staphylococcus aureus, and Clostridium perfringens. In the peroxynitrite scavenging effect ($ONOO^-$) of OH stems, the antioxidative activity of methanol, butanol and water fraction but not hexane fraction showed significant increases in a concentration-dependent manner. The DPPH radical scavenging activities of OH stems were high in the butanol fraction compared with other fractions. Anti-proliferation effects on the B16-F10, HepG2, HT29, and MCF-7 cell lines were significantly higher in the methanol and hexane fractions than in the water and butanol fractions at $100{\mu}g/mL$ concentration of extracts. These results suggest that OH stems can be used for the development of functional foods with biological activity.

• The Journal of Internal Korean Medicine
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• 제41권1호
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• pp.1-13
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• 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.

• Journal of the Korean Society of Food Science and Nutrition
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• 제45권8호
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• pp.1208-1213
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• 2016

Advanced glycation end product (AGE) formation and reactive oxygen species are potential therapeutic targets for the prevention of diabetic nephropathy and other pathogenic complications. Activity-guided isolation of an ethylacetate-soluble portion of 80% methanolic extract from fruits of Sorbus commixta of the Ulleung Island origin using AGE formation inhibition assay led to the isolation and identification of three caffeoylquinic acid derivatives of a previously known structure, 3-O-caffeoylquinic acid (neochlorogenic acid; 1), 4-O-caffeoylquinic acid (cryptochlorogenic acid; 2), and 5-O-caffeoylquinic acid (chlorogenic acid; 3). The structures of these compounds were confirmed by interpretation of nuclear magnetic resonance and mass spectrometry data. Among the isolates, the major metabolite, neochlorogenic acid (1) showed the most potent inhibitory effect against AGE formation with an $IC_{50}$ value of $167.5{\pm}3.5{\mu}M$. Furthermore, all isolated chlorogenic acid isomers were evaluated for their radical scavenging activity against peroxynitrite, and structurally related isomers 1, 2, and 3 exhibited potent inhibitory effects in this radical scavenging assay. This result suggests that the monocaffeoyl quinic acid derivatives isolated from S. commixta might be beneficial for the regulation of diabetic complications and related diseases.

• Journal of Acupuncture Research
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• 제32권3호
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• pp.41-51
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• 2015

Objectives : This study was performed to investigate the effects of $LR_3$ and $SP_6$ acupuncture on renal damage in streptozotocin(STZ)-induced diabetic mice. Methods : ICR male mice were stabilized for a week and divided into four groups: a normal mice group(N), no-acupuncture diabetic mice group(Control), $LR_3$ acupuncture diabetic mice group($LR_3$), and $SP_6$ acupuncture diabetic mice group($SP_6$). Diabetes was experimentally induced by intraperitoneal injection of STZ(150 mg/kg) in citrate buffer(pH 4.5). For two weeks, $LR_3$ and $SP_6$ acupunctures were administered bilaterally at each point once a day. After two weeks, the animals' weight was measured and they underwent a laparotomy. Serum glucose and blood urea nitrogen(BUN) were measured from the blood taken from the heart. We measured glucose, reactive oxygen species(ROS), peroxynitrite($ONOO^-$) and thiobarbituric acid reactive substances(TBARS) in the kidney and compared expression levels of superoxide dismutases(SOD), glutathione peroxidase(GPx), nuclear factor-kappa B(NF-${\kappa}B$), cyclooxygenase-2 (COX-2), inducible nitric oxide synthase(iNOS) and Interleukin-1 beta(IL-$1{\beta}$). Results : BUN significantly decreased in $LR_3$, $SP_6$ compared to the control group. $LR_3$ showed significantly decreased glucose compared to the control group. $LR_3$, $SP_6$ significantly decreased in ROS and $ONOO^-$ compared to the control group. $LR_3$ significantly decreased in TBARS compared to the control group. $SP_6$ significantly increased in expressions of SOD-1, catalase, and GPx compared to the control group. $LR_3$, $SP_6$ significantly decreased in COX-2 compared to the control group. $SP_6$ significantly decreased in IL-$1{\beta}$ compared to the control group. Conclusions : This study suggests that $LR_3$ acupuncture may be effective in controlling glucose and lipid peroxidation and that $SP_6$ acupuncture may have anti-oxidative and anti-inflammatory effects on renal damage in STZ-induced diabetic mice.

• Journal of Korean Medicine Rehabilitation
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• 제29권4호
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• pp.29-45
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• 2019

Objectives This study is to investigate anti-obesity effects of Banggihwanggi-tang-hap-yeonggyechulgam-tang (BY), an herbal formula, in high fat diet induced obese mice model. Methods Fourty five male C57Bl/6J mice were randomly assigned to normal group fed with normal research diet (Nor, n=9), high fat diet control group treated with water (Veh, n=9), high fat diet group treated with orlistat (Oris; n=9, Orlistat 40 mg/kg), high fat diet group treated with low concentraion BY (BYL; n=6, BY 0.87 g/kg) and high fat diet group treated with high concentration BY (BYH; n=6, BY 1.74 g/kg). Results Seven weeks later, antioxidative capacity, body weight, epididymal fat pad and liver weight, reactive oxygen species (ROS), peroxynitrite ($ONOO^-$), alanine aminotransferase (ALT), aspartate aminotransferase (AST), total cholesterol, triglyceride, high density lipoprotein (HDL), low density lipoprotein (LDL), superoxide dismutase (SOD), catalase, glutathione peroxidase (Gpx), heme oxygenase (HO)-1 and histology of liver were evaluated. In the BYH group, 1,1-diphenyl-2-picrylhydrazyl and 2,2'-azinobis (3 ethybenzothiazoline-6-sulfonic acid) radical scavenging activity were more than L-ascorbic acid. Body weight gain were significantly less than Veh group. Epididymal fat pad and liver weight gain were significantly less than Veh group. ROS and $ONOO^-$ were significantly less than with Veh group. ALT and AST were significantly less than with Veh group. Total cholesterol, triglyceride and LDL were significantly less, HDL were significantly more than Veh group. SOD, catalase, Gpx, HO-1 significantly increased compared with Veh group. Injury on liver was lesser than Veh group. Conclusions It can be suggested that BY has anti-obesity effects in high fat diet induced obese mice model.

• The Korea Journal of Herbology
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• 제34권4호
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• pp.27-35
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• 2019

Objectives : Osteoarthritis is characterized by degeneration of articular cartilage, which is characterized by chronic pain, stiffness and decrease range of motion. The present study was designed to compare the therapeutic effect of Dioscoreae Rhizoma water extract (DRW) and Dioscoreae Rhizoma 30% ethanol extract (DRE) on the monosodium iodoacetate (MIA)-induced osteoarthritis rats. Methods : Osteoarthritis was induced by injection of MIA ($50{\mu}{\ell}$ with $80mg/m{\ell}$) into the knee joint cavity of rats. After adaptation period for seven days, rats were divided by 5 groups (n=10/group): normal group, control group, positive control (indomethacin 5 mg/kg), DRW 200 mg/kg treated group, DRE 200 mg/kg treated group (n=10/group). The hind paw weight distribution was measured with the changes of reactive oxygen species (ROS), peroxynitrite ($ONOO^-$) in articulation tissue. Also, the cyclooxygenase-2 (COX-2), inducible nitric oxide synthase (iNOS), tumor necrosis factoralpha ($TNF{\alpha}$), interleukin-6 (IL-6), matrix metalloproteinase-1 (MMP-1), and tissue inhibitor of metalloproteinases-1 (TIMP-1) were investigated by western blot analysis. Results : The administration of DRW and DRE significantly decreased the hind paw weight distribution. The ROS and $ONOO^-$ levels of cartilaginous tissue were significantly decreased in DRW and DRE compared to control group. The results showed that DRE decreased inflammatory cytokines such as iNOS and $TNF{\alpha}$. Also DRE decreased MMP-1 and increased TIMP-1. Conclusions : Based on the above results, Dioscoreae Rhizoma extract seems to have the therapeutic effect on osteoarthritis via suppression of inflammation.