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Purification and Characterization of Manganese Superoxide Dismutase from Staphylococcus sciuri

  • Song, Chi-Hyun;Park, Eun-Kyung;Suh, Hyung-Joo;Lee, Yong-Se;Choi, Jang-Won;Ra, Kyung-Soo
    • Journal of Microbiology and Biotechnology
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    • v.9 no.3
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    • pp.271-275
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    • 1999
  • The intracellular superoxide dismutase (SOD) from Staphylococcus sciuri was isolated to homogeneity by continuous steps, including ammonium sulfate fractionation, DEAE-ion-exchange chromatography, gel filtration, and phenyl hydrophobic gel chromatography. Pure SOD had a specific activity of 4,625 U/mg and was purified 158-fold with a yield of 31 % from a cell free extract. The molecular weight of the purified SOD was determined to be approximately 35.5 kDa by gel filtration and the enzyme was also shown to be composed of dimeric subunits on denaturing SDS-PAGE. The enzyme activity remained stable at pH 5 to 11 and also to heat treatment of up to 50C at pH 7.8, with 80% relative activity. The enzyme was insensitive to cyanide, hydrogen peroxide, and azide, indicating that it is a manganese-containing SOD. The EPR spectrum showed the enzyme containing manganese as a cofactor.

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Antioxidant Activity and Total Phenolic Compounds off P. eryngii spp. Extracts (버섯(P. eryngii spp.) 추출물의 항산화 활성과 총 페놀함량)

  • Chi Hee-Youn;Kim Kyu-Hyun;Kong Won-Sik;Kim Sun-Lim;Kim Jin-Ae;Chung Ill-Min;Kim Jung-Tae
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.50 no.spc1
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    • pp.216-219
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    • 2005
  • This objective of this study was to determined the activity of antioxidants of DPPH, SOD and total phenolic compounds in mushroom(P. eryngii spp.) extract. The antioxidant acitivity using DPPH showed that strain No. 2007(31.78%) and strain No.2014(27.45%) were the highest DPPH inhibition. Among the thirteen mushroom examined, strain No. 2014(58.30%) and strain No. 2010(57.19%) had the highest SOD activity. The highest total phenol content were in strain No.2013(1465.03μg/g) and strain No.2005(1401.09μg/g). Our study suggest that it may be possible to improve mushroom with high natural antioxidant.

Augmentation of antioxidant system: Contribution to antimalarial activity of Clerodendrum violaceum leaf extract

  • Balogun, Elizabeth Abidemi;Zailani, Ahmed Hauwa;Adebayo, Joseph Oluwatope
    • CELLMED
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    • v.4 no.4
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    • pp.26.1-26.9
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    • 2014
  • Reactive oxygen species are known to mediate various pathological conditions associated with malaria. In this study, the antioxidant potential of Clerodendrum violaceum leaf extracts, an indigenous antimalarial remedy, was evaluated. Total phenol, flavonoid, selenium, vitamins C and E contents of Clerodendrum violaceum leaf extracts were determined. The free radical scavenging activities of the extracts against DPPH, superoxide anion and hydrogen peroxide coupled with their reducing power were also evaluated in vitro. Moreover, responses of superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx) and glutathione reductase (GR) in a rodent malaria model to a 4-day administration of Clerodendrum violaceum leaf extracts were also evaluated. The methanolic extract was found to contain the highest amounts of antioxidant compounds/element and also demonstrated the highest free radical scavenging activity in vitro. The results showed a significant decrease (p < 0.05) in SOD and CAT activities with a concurrent significant (p < 0.05) increase in GPx and GR activities in both erythrocytes and liver of untreated Plasmodium berghei NK65-infected animals compared to the uninfected animals. The extracts were able to significantly increase (p < 0.05) SOD and CAT activities and significantly reduce (p < 0.05) GPx and GR activities in both the liver and erythrocytes compared to those observed in the untreated infected animals. The results suggest the augmentation of the antioxidant system as one of the possible mechanisms by which Clerodendrum violaceum extract ameliorates secondary effects of malaria infection, alongside its antiplasmodial effect in subjects.

Differences in Body Weight, Dietary Efficiency, Brain Obesity Control Factor (AMPK), Reactive Oxygen Species (MDA), and Antioxidant Enzymes (SOD) in Young Mice According to the Intensity of Aerobic Exercise for 8 Weeks (8주간의 유산소 운동강도에 따른 어린 생쥐의 체중, 식이효율, 뇌의 비만조절 인자(AMPK), 활성산소(MDA), 항산화효소(SOD)의 차이)

  • Jeon, Mi Yang
    • Journal of Korean Biological Nursing Science
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    • v.23 no.3
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    • pp.247-255
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    • 2021
  • Purpose: The goal of this study was to see how different aerobic exercise intensities affected AMP-activated protein kinase (AMPK), reactive oxygen, and antioxidant enzymes in young mice during an 8-week period. Methods: Forty male C57BL/6 mice, aged seven weeks, were randomly assigned to one of four groups: control (n=10), low-intensity exercise (n=10), moderate-intensity exercise (n=10), and high-intensity exercise (n=10). For eight weeks, aerobic activity was performed once a day for 35-40 minutes, five days a week. The data were analyzed using descriptive statistics, analysis of variance (ANOVA), chi-squared tests, and the Tukey test in the SPSS/WIN 25.0 program. Results: Weight (p=.001) was substantially different between the moderate-intensity exercise group and the control group in AMPK (p<.001). In addition, there were no significant differences between the moderate-intensity exercise group and the control group in reactive oxygen malondialdehyde (MDA) levels (p=.136) and antioxidant enzyme superoxide dismutase (SOD) levels (p=.521). Conclusion: These findings suggest that moderate-intensity aerobic exercise increased AMPK activation and helped young mice shed weight.

The Effects of Gobonyangjeonbang Administration on Antioxidative of 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) induced Rats. (고본양정방 투여가 TCDD 유도 랫드의 항산화 변화에 미치는 영향)

  • Yang, Dong Hyun;OH, Ji Hye;Park, Un kyu;Cho, Chung Sik;Hwang, Seock Yeon
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.21 no.10
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    • pp.231-239
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    • 2020
  • The purpose of this study was to evaluate the effects of gobonyangjeonbang (GYB) on the endocrine function and the antioxidant efficacy of 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD)-induced oxidative stress in rats. In 2017, to evaluate the efficacy of GYB on oxidative stress, 35 male SD rats were divided into five groups and tested. The normal control group was administered saline as a vehicle, while the TCDD-alone group was administered TCDD (2 ㎍/kg per week) intraperitoneally and with physiological saline, and the test group was administered GYB orally by dividing it into three concentrations (75, 150, and 300 mg/kg) for six weeks. Bodyweight decreased significantly after six weeks of TCDD exposure, when compared to rats in the NC group (p<0.001). However, weight loss from TCDD was significantly protected by administration of GYB at 300 mg/kg (p<0.01). The rat liver induced by TCDD showed cytoplasmic vacuole degeneration, and the hepatic sinusoid and weight increased. As a result of measuring MDA and SOD, both items tended to decrease under TCDD administration. On the other hand, there was no change due to GYB administration, and significance was observed in the GYB 300 mg/kg group compared to the NC group in the SOD result (p<0.05). These findings demonstrated that GYB may have a protective effect against TCDD-induced liver toxicity in rats.

Correlations of Physical Fitness Factors, Antioxidant Enzymes, Lipid Peroxidation, Lipid Profiles, Lactate Levels and Cardiovascular Variables in an Exercising Group and Controls

  • Yu, Jae-Ho;Lee, Suk-Min
    • The Journal of Korean Physical Therapy
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    • v.22 no.3
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    • pp.61-69
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    • 2010
  • Purpose: This study was designed to investigate correlations between physical fitness, antioxidant enzymes (SOD, CAT, GPX), lipid peroxidation levels (MDA), lipid profiles, lactate levels and cardiovascular variables in an exercising group and a control group. Methods: Twelve healthy young males (Exercise group: 6, Controls: 6). All subjects took physical fitness tests and blood samples were collected while subjects were resting. Results: In the exercise group, there were several significant correlations: between back strength and SOD enzyme levels (r=0.82, p=0.04), back strength and MDA (r=0.94, p=0.00), agility and GPX (r=0.81, p=0.04), and balance and GPX (r=0.81, p=0.04). In the control group, there were significant correlations between: dominant grip strength and MDA (r=-0.84, p=0.03), and agility and GPX (r= -0.82, p=0.04). In the exercise group, there were no significant correlations between physical fitness factors, TC, TG, HDL-C and lactate levels. In the control group, there were significant correlations between: back strength and TG (r=0.88, p=0.01), and agility and HDL-C (r= -0.84, p=0.03). In the exercise group, there were significant correlations between: non-dominant grip strength and SBP (r=0.94, p=0.00), dominant grip strength and SBP (r=0.85, p=0.03), and power and SBP (r=0.82, p=0.04). In controls, there were significant correlations between: dominant grip strength and DBP (r=-0.85, p=0.03), muscular endurance and ST level (r=-0.93, p=0.00), and muscular endurance and HR (r=-0.88, p=0.01). Conclusion: That cardiovascular patients and controls who participated in regular exercise maintained their antioxidant capacity suggests that long-term physical activity can counteract the negative dysfunction that characterizes sedentary lifestyle, probably by maintaining plasma antioxidant defenses and thereby preventing oxidative stress.

Reduction of Cadmium Poisoning by Polyphenol Compounds Prepared from Persimmon Leaves (Diospyros kaki folium) (감나무 잎(Diospyros kaki folium)으로부터 분리한 Polyphenol 화합물이 카드뮴 중독 흰쥐의 피해경감 효과에 미치는 영향)

  • Jo, Guk-Young;Choi, Hee-Jin;Son, Jun-Ho;Bae, Du-Kyung;Woo, He-Sob;An, Bong-Jeon;Bae, Man-Jong;Choi, Cheong
    • Applied Biological Chemistry
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    • v.42 no.4
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    • pp.361-365
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    • 1999
  • In order to inspect safety and function regarding the reduction of cadmium poisoning by polyphenol compounds prepared from persimmon leaves (Diospyros kaki folium), animal test was done. Rats, group P-1 and P-2, were treated with cadmium and polyphenols of persimmon leaves. A control was just treated with cadmium. GOT activities in P-1 and in P-2 were lower than that of the control without considerable difference, whereas GPT activities decreased in P-1 and P-2. The SOD activity of liver tissue increased in P-l and P-2 compared with that of the control. GST activity was higher than that of the control without considerable difference in P-1; however, it increased in P-2. Lipid peroxide value considerably increased in both P-1 and P-2.

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Expressional Analysis of Superoxide Dismutase in Olive Flounder (Paralichthys olivaceus) against Viral Hemorrhagic Septicemia Virus Infection (Viral hemorrhagic septicemia virus (VHSV) 감염에 대한 넙치 superoxide dismutase(Of-SOD)의 발현분석)

  • Lee, Young Mee;Kim, Jung-Eun;Noh, Jae Koo;Kim, Hyun Chul;Park, Choul-Ji;Park, Jong-Won;Kim, Kyung-Kil;Lee, Jeong-Ho
    • Journal of Life Science
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    • v.24 no.12
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    • pp.1371-1377
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    • 2014
  • Superoxide dismutase is a family of important antioxidant metalloenzymes and catalyzes the dismutation of toxic superoxide anions into dioxygen and hydrogen peroxide. A recent study identified the partial superoxide dismutase (SOD) gene in olive flounder (Paralichthys olivaceus). The same study reported that it strongly induced benzo[a]pyrene and that it was an indicator of aquatic oxidative stress responses. However, its transcriptional response against viral infection has not been investigated. In the present study, the spatial and temporal expression profiles were analyzed to investigate the function of Of-SOD in the antiviral response. The Of-SOD transcripts were ubiquitously detected at various levels in diverse tissues in a real-time PCR. The expression of Of-SOD was significantly higher in the muscles, liver, and brain but extremely low in the stomach and spleen. Following a VHSV challenge, the expression of Of-SOD increased within 3 h in the kidneys and decreased to the original level 2 days postchallenge. In muscle, liver, and brain, Of-SOD mRNA was similarly up-regulated at 3-6 h postchallenge and then decreased to the basal level. Although the expression pattern and induction time differed slightly depending on the tissue, the transcript of Of-SOD consistently increased in the acute infection response, but the expression was low in the chronic response. The expression of Of-SOD was induced after the VHSV infection, and Of-SOD was probably involved in the immune response against the viral challenge. These results suggest that SOD may play important roles in the immune defense system of P. olivaceus and perhaps contribute to the protective effects against oxidative stress in olive flounder.

Extracts from Gracilaria vermiculophylla Prevent Cellular Senescence and Improve Differentiation Potential in Replicatively Senescent Human Bone Marrow Mesenchymal Stem Cells (홍조류인 Gracilaria vermiculophylla 추출물에 의한 노화 골수유래 중간엽줄기세포의 항노화 및 분화능력 개선 효과)

  • Jeong, Sin-Gu;Cho, Tae Oh;Cho, Goang-Won
    • Journal of Life Science
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    • v.28 no.9
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    • pp.1042-1047
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    • 2018
  • The red algae Gracilaria vermiculophylla is widespread on seashores worldwide and has been used as food in Asian countries. Previous studies have reported that extracts of Gracilaria red algae have beneficial anti-oxidant and anti-inflammatory effects. The present study examined the anti-senescence effects of Gracilaria vermiculophylla extracts (GV-Ex) in replicatively senescent human bone marrow mesenchymal stem cells (hBM-MSCs). GV-Ex pretreatment improved the cellular viability of hBM-MSCs that had been injured by oxidative stress. These effects of GV-Ex were confirmed by MTT assay and immunoblot analysis using the apoptotic proteins p53 and cleaved caspase-3. The reactive oxygen species (ROS) levels were examined in long-term cultured Passages 17 (P-17) mesenchymal stem cells (MSC) and compared to P-7 MSC. The ROS accumulation was greater in the P-17 than in the P-7. However, these increased ROS levels in the P-17 were decreased significantly after treatment with GV-Ex, and restoration of the levels of the anti-oxidant enzymes SOD1, SOD2, and CAT was also observed under these conditions. In addition, P-17 hBM-MSC treated with GV-Ex had decreased levels of the senescence proteins p53, p21, and p16. The results show that the ability of P-17 hBM-MSC to differentiate into osteocytes and adipocytes was improved by GV-Ex treatment, suggesting that GV-Ex ameliorates the functional decline of senescent stem cells.

Effects of Supplementation of Puerariae Radix Ethanol Extract on the Antioxidative Defense System in Rats (갈근 에탄올 추출물이 흰쥐의 항산화계에 미치는 영향)

  • Lee Okhee
    • Journal of Nutrition and Health
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    • v.37 no.10
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    • pp.872-880
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    • 2004
  • This study was performed to investigate the effect of Puerariae radix-ethanol extracts rich in isoflavone on the antio-xidative system of rats. For this purpose, first, Puerariae radix was extracted with ethanol, and its total isoflavone and puerarin contents were analysed. Second, female Sprague Dawley rats were fed for 6 weeks with four diets which were based on AIN96G diet and supplemented with Puerariae radix-ethanol extracts to contain isoflavone. The isoflavone contents of four experimental diets were 0 mg, 500 mg, 1,000 mg, 2,000 mg per kg diet, respectively (control, P0.05%,P0.1%, P0.2%). Liver and erythrocyte activities of antioxidative enzyme such as superoxide dismutase (SOD), catalase,glutathione peroxidase (GSHpx) were measured. Also, plasma and liver malondialdehyde (MDA) concentrations, liver glutathione (GSH) and oxidized glutathione (GSSG) concentrations were measured. The total isoflavone content of Puerariae radix-ethanol extract was 3067.6 mg per 100 g extract and the content of puerarin was 2557.4 mg per 100 g extract. The erythrocyte activities of GSH-Px and catalase were higher in group P0.1% and P0.2%. But SOD activity of erythocyte did not show any difference by the Puerariae radix-ethanol extract supplementation in diet. The activity of SOD in liver increased significantly by the supplementation of extract, showing highest level in P0.1% group. The liver GSH concentration increased significantly in group of P0.05%, P0.1%, and P0.2% compared with control group (p <0.05). The GSSG concentration in liver showed no difference by the supplementation of Puerariae radix extract from the control group, except P0.2% group. The plasma MDA concentration did not show any significant differences by the extract supplementation. But the liver MDA concentration decreased by the extract supplementation, showing the lowest level in P0.1 % diet group. These results suggest that the supplementation of Puerariae radix-ethanol extract can inhibit lipid peroxidation in liver and enhance the antioxidative defense competence of rats.