Automated assays for superoxide dismutase, catalase, glutathione peroxidase, and glutathione reductase activity

1990 ◽  
Vol 184 (2) ◽  
pp. 193-199 ◽  
Author(s):  
Conrad R. Wheeler ◽  
Jhaine A. Salzman ◽  
Nabil M. Elsayed ◽  
Stanley T. Omaye ◽  
Don W. Korte
Keyword(s):  
Superoxide Dismutase ◽  
Glutathione Peroxidase ◽  
Glutathione Reductase ◽  
Reductase Activity ◽  
Glutathione Reductase Activity

scholarly journals The relationship of antioxidant enzymes and some physiological parameters in maize during chilling

2011 ◽  
Vol 50 (No. 1) ◽  
pp. 27-32 ◽  
Author(s):  
T. Takáč
Keyword(s):  
Superoxide Dismutase ◽  
Antioxidant Enzymes ◽  
Glutathione Reductase ◽  
Ascorbate Peroxidase ◽  
Reductase Activity ◽  
Physiological Parameters ◽  
Maize Seedlings ◽  
Maize Cultivars ◽  
Inhibition Of Growth ◽  
Glutathione Reductase Activity

The changes in some physiological parameters of maize seedlings in response to chilling were studied. The emphasis was laid upon their relationship to chilling induced alterations in antioxidant enzymes (superoxide dismutase, catalase, ascorbate peroxidase and glutathione reductase) activity. The exposure of maize seedlings to chilling caused substantial defects in the 4-day-old seedlings and the seedlings with two fully developed leaves, respectively. The membrane semipermeability perturbations and the loss of viability in the young seedlings were observed. Similarly, we found a decrease of chlorophyll content, appearance of necrotic lesions and inhibition of growth in older plants. The measurements of superoxide dismutase, catalase, ascorbate peroxidase and glutathione reductase activities provide an evidence of reactive oxygen species formation, that is assumed to be a reason of the found damages. Significant differences between two cultivars were found in the studied parameters. The electrolyte leakage and viability test provided effective methods for the characterization of the chilling tolerance-level in maize cultivars.

scholarly journals Activity of glutathione-dependent enzymes in spermatozoa in patients with pathospermia

2017 ◽  
Author(s):  
O. K. Onufrovych ◽  
R. V. Fafula ◽  
Io. A. Nakonechnyi ◽  
D. Z. Vorobets ◽  
U. P. Iefremova ◽  
...  
Keyword(s):  
Glutathione Peroxidase ◽  
Glutathione Reductase ◽  
Antioxidant System ◽  
Reductase Activity ◽  
Sperm Cells ◽  
Compensatory Mechanisms ◽  
Glutathione Antioxidant System ◽  
Healthy Men ◽  
Infertile Men ◽  
Glutathione Reductase Activity

The results of glutathione peroxidase and glutathione reductase activity in spermatozoa of patients with different forms pathospermia are presented in the paper. It was shown that glutathione peroxidase and glutathione reductase activity in sperm cells of patients is reduced in comparison with healthy men with preserved fertility. However, the most expressed changes in the activity of glutathione peroxidase and glutathione reductase are in spermatozoa of infertile men with associated forms patospermia and leucospermia. These changes indicate exhaustion of compensatory mechanisms of glutathione antioxidant system in the sperm cells of infertile men with pahospermia.

scholarly journals Antioxidant activity of the probiotic consortium in vitro

2014 ◽  
Vol 2 ◽  
Author(s):  
Saule Saduakhasova ◽  
Almagul Kushugulova ◽  
Samat Kozhakhmetov ◽  
Gulnara Shakhabayeva ◽  
Indira Tynybayeva ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Superoxide Dismutase ◽  
Glutathione Reductase ◽  
Reductase Activity ◽  
Superoxide Dismutase Activity ◽  
Total Antioxidant Activity ◽  
Bacterial Cultures ◽  
Total Antioxidant ◽  
Glutathione Reductase Activity

Introduction: Available evidence suggests that probiotics have different biological functions that depend on several mechanisms, such as antioxidant and DNA-protective activities. The probiotic consortium includes bacterial cultures such as Streptococcus thermophilus, Lactococcus lactis, Lactobacillus plantarum, and other bacterial cultures isolated from traditional Kazakh dairy products (ayran, kumys, shubat, and healthy clinical material). The aim of this study was to investigate the total antioxidant activity of the consortium of probiotic bacteria and to determine the activity of superoxide dismutase, glutathione reductase, and DNA-protective action.Material and methods: In vitro comet assay was used to determine the antigenotoxicity of the probiotic consortium. Total antioxidant activity was determined using a method of analysis with Trolox as the equivalent. The analysis method of superoxide dismutase activity assesses the inhibition rate of the nitroblue tetrazolium reduction to formazan by superoxide dismutase. Determination of glutathione reductase activity is based on the measurement of the NADPH oxidation speed.Results: A significantly high level of the total antioxidant activity of the probiotic consortium intact cells (15.3 mM/ml) was observed whereas the activity index of  lysate  was 11.1 mM/ml.The superoxide dismutase activity of probiotic consortium lysate was evaluated, with values that peaked at 0.24 U/mg protein. The superoxide dismutase activity of the consortium was lower in comparison to L.fernentum E-3 and L.fernentum E-18 cultures with values of 0.85 U/mg and 0.76 U/mg protein, respectively. SOD activity of probiotic consortium whole cells was not observed, which is typical for lactic acid bacteria.Glutathione reductase plays an important role in the optimal protection from oxidative stress. Glutathione reductase activity of the studied probiotic consortium was low; moreover, the activity of the lysate was two times higher than the activity of the cells reaching 0.01 units/ml. Investigations by Dr. Li have shown that the intracellular glutathione may give a significant protection of Lactococcus from the damaging action of H2O2, even at very low concentrations.The data from our study suggests that the co-incubation of the epithelial cells with probiotic bacteria reduces the percentage of damaged cells (damage index–0.60).Conclusion: The studied probiotic consortium has antigenotoxic and antioxidant activities. Preparations and products of this probiotic consortium may serve as a protective component in the intestinal microbial ecosystem. 

Analysis of Glutathione-Dependent Enzyme Activities in two Different Rat Hepatomas and in Normal Liver in Relation to their Role in Resistance to Oxidative Stress

1988 ◽  
Vol 74 (6) ◽  
pp. 617-621 ◽  
Author(s):  
Maria Armida Rossi ◽  
Mario Umberto Dianzani
Keyword(s):  
Oxidative Stress ◽  
Glutathione Peroxidase ◽  
Glutathione Reductase ◽  
Reductase Activity ◽  
Antioxidant Properties ◽  
Liver Microsomes ◽  
Normal Liver ◽  
Lipid Hydroperoxides ◽  
Glutathione S Transferases ◽  
Glutathione Reductase Activity

The importance of some glutathione metabolic pathways was examined in two highly dedifferentiated hepatomas, Yoshida AH-130 and Morris 3924 A hepatomas, and in normal liver in relation to their role against oxidative stress. The cytosol prepared from Yoshida hepatoma cells decreased the peroxidation rate in normal liver microsomes and mitochondria, but this antioxidant property was not displayed by Morris hepatoma. Glutathione peroxidase and glutathione-S-transferases activities were extremely low in both hepatomas; glutathione reductase activity values were about half the normal liver values. The large decrease in glutathione peroxidase and glutathione-S-transferases suggests that in these two tumors only small amounts of GSH can be used in reduction or conjugation reactions, such as the reduction of hydrogen peroxide and lipid hydroperoxides or the conjugation of GSH with the end products of lipoperoxidation, aldehydes or ketones. The hypothesis of a more efficient GSSG reduction in hepatomas, due to the low glutathione peroxidase/glutathione reductase activity ratio, is also discussed. The described changes in glutathione related enzymes do not seem to have any correlation with the protective effect against the lipoperoxidative processes displayed by some tumors since these enzymatic activities were similar in both hepatomas whereas only Yoshida hepatoma showed antioxidant properties.

scholarly journals Oxidative stress and antioxidative defense in the skin of rats with thermal injury

2003 ◽  
Vol 22 (1) ◽  
pp. 33-39 ◽  
Author(s):  
Bato Korac ◽  
Biljana Buzadzic
Keyword(s):  
Superoxide Dismutase ◽  
Vitamin E ◽  
Glutathione Peroxidase ◽  
Glutathione Reductase ◽  
Reductase Activity ◽  
Control Level ◽  
Thioredoxin Reductase ◽  
Skin Area ◽  
Antioxidative Defense ◽  
Glutathione S Transferase

Changes in the activity and level of some antioxidative defense system components were determined in the rat skin during hypo- (ebb) and hypermetabolic (flow) phase of thermal trauma. At the same time, the effects of enzymatic (superoxide dismutase) and non-enzymatic (vitamin E and glutathione) antioxidants, as well as of L-arginine applied on the scalded skin area in different combinations in the form of a lyposomal ointment on endogenous antioxidative defense components were studied both in the injured and uninjured skin. In scalded skin during hypometabolic phase, a decrease in activity of superoxide dismutase, catalase, glutathione peroxidase glutathione reductase, as well as in the level of vitamin E was observed in comparison with the control. This decrease was accompanied by a complete loss of glutathione and the activity of glutathione-S-transferase and thioredoxin reductase. The same trend of changes was recorded in hypermetabolic phase. In the uninjured skin of scalded animals, the activities of superoxide dismutase, catalase, glutathione peroxidase and glutathione reductase were at the control level both in hypo- and hypermetabolic phase. Also, no changes in vitamin E content were found while the activities of thioredoxin reductase and glutathione-S-transferase were increased. Glutathione level in this group of animals was decreased the decrease being more prominent in hyper- then in hypometabolic phase. The ointments applied to the injured parts of the skin expressed protective effects observed as an increase in vitamin E level and an attenuation of glutathione reductase activity inhibition.

scholarly journals АНТИОКСИДАНТНИЙ ЗАХИСТ ТА ПЕРОКИСНЕ ОКИСНЕННЯ ЛІПІДІВ ОРГАНІЗМУ ВИСОКОТІЛЬНИХ КОРІВ ПРИ ПРОФІЛАКТИЦІ САЛЬМОНЕЛЬОЗУ ЗА ВПЛИВУ НАНОПРЕПАРАТУ ГЕРМАКАПУ

2016 ◽  
Vol 18 (2(66)) ◽  
pp. 112-116
Author(s):  
P.Y. Lavriv
Keyword(s):  
Glutathione Peroxidase ◽  
Glutathione Reductase ◽  
Antioxidant Defense ◽  
Reductase Activity ◽  
Lipid Body ◽  
Antioxidant Defense System ◽  
Glutathione System ◽  
Defense System ◽  
Glutathione Reductase Activity ◽  
Radical Processes

The article  deals with the results of experimental research data of relationship between the antioxidant defense system and lipid body peroxidation of high calves cows  under  the influence of nanpreparation Germakap conducted  with simultaneous vaccination with inactivated formol vaccination with repeated  in two weeks later  at the same doses as their  stability and immunity to Salmonella. It was found the likely increase in activity of glutathione peroxidase and glutathione reductase and at the same time, reduction of malon dialdehyde and hydroperoxides lipids and superoxidimutase. These changes in animals  body occur due to complex components adaptive nan preparation Germakap that lead to the normalization of metabolic and free radical processes in animals.  However, the increase in the catalytic activity of glutathione peroxidase and glutathione reductase activity in plasma of high calves cows  from research group can be explained by increasing intensity of synthesis in which these enzymes by introducing nan preparation Germakap closely associated with the regeneration of glutathione in the cell, and also the activity of glutathione peroxidase.  Through interaction with restoration of glutathione and glutathione peroxidase, glutathione reductase it was formed glutathione system that protects cells from stress peroxidation

scholarly journals Effects of Long-Term Supplementation with Aluminum or Selenium on the Activities of Antioxidant Enzymes in Mouse Brain and Liver

Catalysts ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 585 ◽  
Author(s):  
Ilona Sadauskiene ◽  
Arunas Liekis ◽  
Inga Staneviciene ◽  
Rima Naginiene ◽  
Leonid Ivanov
Keyword(s):  
Superoxide Dismutase ◽  
Drinking Water ◽  
Glutathione Reductase ◽  
Mouse Brain ◽  
Reductase Activity ◽  
Antioxidant Defense System ◽  
High Dose ◽  
Glutathione Reductase Activity ◽  
Primary Antioxidant

The aim of this study was to investigate the effects of aluminum (Al) or selenium (Se) on the “primary” antioxidant defense system enzymes (superoxide dismutase, catalase, and glutathione reductase) in cells of mouse brain and liver after long-term (8-week) exposure to drinking water supplemented with AlCl3 (50 mg or 100 mg Al/L in drinking water) or Na2SeO3 (0.2 mg or 0.4 mg Se/L in drinking water). Results have shown that a high dose of Se increased the activities of superoxide dismutase and catalase in mouse brain and liver. Exposure to a low dose of Se resulted in an increase in catalase activity in mouse brain, but did not show any statistically significant changes in superoxide dismutase activity in both organs. Meanwhile, the administration of both doses of Al caused no changes in activities of these enzymes in mouse brain and liver. The greatest sensitivity to the effect of Al or Se was exhibited by glutathione reductase. Exposure to both doses of Al or Se resulted in statistically significant increase in glutathione reductase activity in both brain and liver. It was concluded that 8-week exposure to Se caused a statistically significant increase in superoxide dismutase, catalase and glutathione reductase activities in mouse brain and/or liver, however, these changes were dependent on the used dose. The exposure to both Al doses caused a statistically significant increase only in glutathione reductase activity of both organs.

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