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.

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 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

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 effect of age and sex on glutathione reductase and glutathione peroxidase activities and on aerobic glutathione oxidation in rat liver homogenates

1969 ◽  
Vol 112 (1) ◽  
pp. 109-115 ◽  
Author(s):  
R E Pinto ◽  
W Bartley
Keyword(s):  
Glutathione Peroxidase ◽  
Glutathione Reductase ◽  
Rat Liver ◽  
Peroxidase Activity ◽  
Redox State ◽  
Reductase Activity ◽  
Glutathione Peroxidase Activity ◽  
Glutathione Reductase Activity ◽  
Liver Homogenates ◽  
Age And Sex

1. Changes in liver glutathione reductase and glutathione peroxidase activities in relation to age and sex of rats were measured. Oxidation of GSH was correlated with glutathione peroxidase activity. 2. Glutathione reductase activity in foetal rat liver was about 65% of the adult value. It increased to a value slightly higher than the adult one at about 2–3 days, decreased until about 16 days and then rose after weaning to a maximum at about 31 days, finally reaching adult values at about 45 days old. 3. Weaning rats on to an artificial rat-milk diet prevented the rise in glutathione reductase activity associated with weaning on to the usual diet high in carbohydrate. 4. In male rats glutathione peroxidase activity in the liver increased steadily up to adult values. There were no differences between male and female rats until sexual maturity, when, in females, the activity increased abruptly to an adult value that was about 80% higher than that in males. 5. The rate of GSH oxidation in rat liver homogenates increased steadily from 3 days until maturity, when the rate of oxidation was about 50% higher in female than in male liver. 6. In the liver a positive correlation between glutathione peroxidase activity and GSH oxidation was found. 7. It is suggested that the coupled oxidation–reduction through glutathione reductase and glutathione peroxidase is important for determining the redox state of glutathione and of NADP, and also for controlling the degradation of hydroperoxides. 8. Changes in glutathione reductase and glutathione peroxidase activities are discussed in relation to the redox state of glutathione and NADP and to their effects on the concentration of free CoA in rat liver and its possible action on ketogenesis and lipogenesis.

scholarly journals In Vivo Bioavailability of Selenium in Selenium-Enriched Streptococcus thermophilus and Enterococcus faecium in CD IGS Rats

Antioxidants ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 463
Author(s):  
Gabriela Krausova ◽  
Antonin Kana ◽  
Marek Vecka ◽  
Ivana Hyrslova ◽  
Barbora Stankova ◽  
...  
Keyword(s):  
Glutathione Reductase ◽  
Enterococcus Faecium ◽  
Reductase Activity ◽  
Streptococcus Thermophilus ◽  
Heart Tissue ◽  
Sprague Dawley ◽  
Glutathione Reductase Activity ◽  
Novel Concept ◽  
The Individual

The selenium (Se) enrichment of yeasts and lactic acid bacteria (LAB) has recently emerged as a novel concept; the individual health effects of these beneficial microorganisms are combined by supplying the essential micronutrient Se in a more bioavailable and less toxic form. This study investigated the bioavailability of Se in the strains Enterococcus faecium CCDM 922A (EF) and Streptococcus thermophilus CCDM 144 (ST) and their respective Se-enriched forms, SeEF and SeST, in a CD (SD-Sprague Dawley) IGS rat model. Se-enriched LAB administration resulted in higher Se concentrations in the liver and kidneys of rats, where selenocystine was the prevalent Se species. The administration of both Se-enriched strains improved the antioxidant status of the animals. The effect of the diet was more pronounced in the heart tissue, where a lower glutathione reductase content was observed, irrespective of the Se fortification in LAB. Interestingly, rats fed diets with EF and SeEF had higher glutathione reductase activity. Reduced concentrations of serum malondialdehyde were noted following Se supplementation. Diets containing Se-enriched strains showed no macroscopic effects on the liver, kidneys, heart, and brain and had no apparent influence on the basic parameters of the lipid metabolism. Both the strains tested herein showed potential for further applications as promising sources of organically bound Se and Se nanoparticles.

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