Microbial antioxidant defense enzymes

2017 ◽  
Vol 110 ◽  
pp. 56-65 ◽  
Author(s):  
Cindy Staerck ◽  
Amandine Gastebois ◽  
Patrick Vandeputte ◽  
Alphonse Calenda ◽  
Gérald Larcher ◽  
...  
Keyword(s):  
Antioxidant Defense ◽  
Defense Enzymes ◽  
Antioxidant Defense Enzymes

Prospects for the use of highly effective and safe stimulants of embryogenesis in poultry farming

2021 ◽  
Vol 1 (6) ◽  
pp. 42-50
Author(s):  
I. I. Kochish ◽  
◽  
T. A. Sadovskaya ◽  
T. O. Azarnova ◽  
◽  
...  
Keyword(s):  
Antioxidant Defense ◽  
Morphological Changes ◽  
Biologically Active ◽  
Defense Enzymes ◽  
Chick Embryos ◽  
Negative Effects ◽  
Resource Saving ◽  
Antioxidant Defense Enzymes ◽  
Active Substances ◽  
Poultry Farming

To increase the embryonic and postembryonic viability of poultry, along with selection work, optimization of the microclimate parameters of poultry houses and rations, it is also advisable to develop resource-saving and environmentally friendly methods of using biologically active substances. It was shown that the treatment of eggs with a composition of solutions of natural metabolites (colamine, succinic acid and Ribav) in optimal concentrations stopped and prevented the negative effects of stress. Positive biochemical and morphological changes were observed in the development of chick embryos. An increase in chick withdrawal, a decrease in all incubation waste, an increase in the activity of antioxidant defense enzymes, and a decrease in the content of malondialdehyde in the blood serum of chickens were found.

scholarly journals Molecular Role of Nitric Oxide in Secondary Products Production in Ginkgo biloba Cell Suspension Culture

2015 ◽  
Vol 43 (1) ◽  
pp. 12-18 ◽  
Author(s):  
Hossam Saad EL-BELTAGI ◽  
Osama K. AHMED ◽  
Adel E. HEGAZY
Keyword(s):  
Nitric Oxide ◽  
Ginkgo Biloba ◽  
Antioxidant Defense ◽  
Nitric Oxide Donor ◽  
Peat Moss ◽  
Defense Enzymes ◽  
Secondary Products ◽  
Equal Concentration ◽  
Shoot Height ◽  
Antioxidant Defense Enzymes

Effects of sodium nitroprusside (SNP; nitric oxide donor) treatment on the enhancement of secondary metabolites production, oxidative stress mediators (O2-.) accumulation and antioxidant defense enzymes of Ginkgo biloba callus culture was investigated. On one hand, the obtained data showed a highly metabolic modification of chemical constituents, PAL activity and various antioxidant defense enzymes (APX, SOD), which gradually increased in response to SNP treatments. On the other hands the high NO levels significantly increased the accumulation of various oxidative burst of O2-.. MS basal medium supplemented with casein hydrolase (500 mg/L), NAA and BA at equal concentration (0.5 mg/L) recorded the highest number of regenerated shoots (4.81 cm) and shoot height (4.96 cm) as well as root number (2.25 cm) and root length (4.5 cm). The highest survival (40 %) was shown in acclimatization on the mixture containing sand, peat moss and vermiculite (1: 1: 1, v/v/v), which significantly confirmed and reflected the variation in survival percentage. Meanwhile, higher treatment (500 μM) of NO positively enhanced secondary products accumulation of total tannins, saponins, phenols and total flavonoids in G. biloba callus culture.

scholarly journals Biosynthetic insulin effect on red cell membrane lipid peroxidation in patients with insulin-dependent diabetes

1994 ◽  
Vol 40 (3) ◽  
pp. 12-15 ◽  
Author(s):  
T. S. Balashova ◽  
Ye. N. Golega ◽  
I. A. Rudko ◽  
M. I. Balabolkin ◽  
A. A. Kubatiev
Keyword(s):  
Cell Membrane ◽  
Human Insulin ◽  
Antioxidant Defense ◽  
Vascular Complications ◽  
Membrane Lipid ◽  
Defense Enzymes ◽  
Red Cell ◽  
Membrane Lipid Peroxidation ◽  
Red Cell Membrane ◽  
Antioxidant Defense Enzymes

The aim of our research was elucidation of a relationship between red cell membrane lipid peroxidation (LPO) and antioxidant' defense enzymes, on the one hand and the age disease duration and presence of vascular complications in patients with type I diabetes mellitus on the other. The possibility of correcting red cell peroxide status with human insulin preparations was investigated. Red cell membrane LPO was found increased more than twofold and antioxidant defense enzymes activities virtually unchanged vs. controls in 16 patients with diabetes aged 20 to 43. These characteristics of red cell peroxidation status do not depend on patients age disease standing or presence of vascular complications. A twelve-week therapy with biosynthetic insulin resulted in complete normalization of LPO processes in patients with angiopathies aged under 35 and with disease standing of less than 10 years. In diabetics with angiopathies aged over 35 and disease standing of more than 10 years red cell MDA level reduced under the effect of therapy with human insulin preparations but was still increased vs. that in healthy donors by 1.5 times. Red cell GP and SOD activities reduced in the course of insulin therapy in all the examined groups of diabetics. Catalase activity increased by approximately 50% in patients with angiopathies those aged over 35 and a disease standing of more than 10 years under the effect of insulin. In the rest groups of patients catalase activity did not differ from its initial level. Our results permit us recommending besides human insulin preparations antioxidant therapy for patients with vascular complications those aged over 35 and a disease standing of more than 10 years.

Hyperlipidemia Downregulate Brain Antioxidant Defense Enzymes and Neurotrophins in Rats: Assessment of the Modulatory Potential of EPA+DHA and Zerumbone

2020 ◽  
Vol 64 (20) ◽  
pp. 2000381 ◽  
Author(s):  
Vinayak Uppin ◽  
Pooja Acharya ◽  
Kempaiah Bettadaiah Bheemanakere ◽  
Ramaprasad Ravichandra Talahalli
Keyword(s):  
Antioxidant Defense ◽  
Defense Enzymes ◽  
Antioxidant Defense Enzymes

scholarly journals Effect of Xenon on the Phosphorylation of Glycogen Synthase Kinase 3β and Antioxidant Enzymes in Rat Brain

2021 ◽  
Vol 9 (4) ◽  
pp. 564-572
Author(s):  
A. N. Kuzovlev ◽  
A. I. Shpichko ◽  
I. A. Ryzhkov ◽  
O. A. Grebenchikov ◽  
A. K. Shabanov ◽  
...  
Keyword(s):  
Superoxide Dismutase ◽  
Rat Brain ◽  
Heme Oxygenase ◽  
Antioxidant Defense ◽  
Glycogen Synthase ◽  
Defense Enzymes ◽  
Glycogen Synthase Kinase 3Β ◽  
Phosphorylated Form ◽  
Antioxidant Defense Enzymes ◽  
Gsk 3Β

Relevance. The increase in the number of severe brain injuries due to stroke and traumatic brain injury determines the need to study and develop effective strategies for neuroprotection. The article highlights new mechanisms of the neuroprotective action of the inhalation anesthetic xenon based on the data of our own experimental studies.Aim of study. To assess the effect of anesthesia with xenon at a concentration of 0.5 MAC (minimum alveolar concentration) on the phosphorylation of glycogen synthase kinase 3β (GSK-3β) and the content of antioxidant defense enzymes in the rat brain.Material and methods. The effect of inhalation anesthesia with xenon on the phosphorylation of the GSK-3β enzyme in comparison with lithium chloride, as well as on the content of heme oxygenase, catalase, and Mn-superoxide dismutase in rat brain homogenates was studied by immunoblotting.Results. The use of xenon at a concentration of 0.5 MAA causes an almost twofold increase in the content of the phosphorylated form of the GSK-3β enzyme in comparison with the control (p<0.05) and significantly increases the pool of antioxidant defense enzymes: heme oxygenase by 50% (p <0.05) and Mn-superoxide dismutase by 60% (p<0.05).Conclusion. The conducted experimental study revealed new molecular mechanisms of action of the inhalation anesthetic xenon. The effect of xenon on the pool of enzymes involved in the protection of the brain from oxidative distress was found. The data obtained indicate the prospects for using xenon and require further research in this direction. The use of xenon at a concentration of 50 vol.% (0.5 MAA) for 30 minutes does not affect the content of the glycogen synthase-3β enzyme, at the same time causing an almost twofold increase in its phosphorylated form, the glycogen synthase-3β enzyme, and is accompanied by a significant increase the content of heme oxygenase, Mn-superoxide dismutase and a slight increase in the content of catalase in rat brain homogenates. Thus, the results of the study suggest that one of the possible mechanisms of the neuroprotective effect of xenon is the phosphorylation of glycogen synthase-3β, which prevents the opening of the mitochondrial pore, inhibiting the death of mitochondria-mediated apoptosis of neurons and increasing the level of antioxidant protection in them.

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