State of the enzyme link of antioxidant protection in boys with hypoandrogenism

2020 ◽  
Vol 40 (4) ◽  
pp. 32-36
Author(s):  
L. K. Parkhomenko ◽  
◽  
L. A. Strashok ◽  
S. I. Turchina ◽  
G. V. Kosovtsova ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Superoxide Dismutase ◽  
Free Radical ◽  
Glutathione Peroxidase ◽  
Free Radical Oxidation ◽  
Conjugated Dienes ◽  
Delayed Puberty ◽  
Control Group ◽  
Antioxidant Protection ◽  
Radical Oxidation

Recently, interest in the problem of free radical oxidation in biological membranes, which is directly related to both the normal functioning of cells and the occurrence, course and outcome of many pathological conditions, has increased again in clinical medicine. The aim was to determine the role and impact of antioxidant defense in boys with hypoandrogenism. The study involved 75 adolescents with hypoandrogenism aged 13–18 years, who underwent a complex of clinical and laboratory examinations. All patients were conducted complex of anthropometric research and determination of the degree of delayed puberty, laboratory and instrumental examination. Free radical oxidation was determined by the levels of malondialdehyde, conjugated dienes, carbonated proteins, superoxide dismutase and catalase in the serum, and restored glutathione and glutathione peroxidase in whole blood. Based on their determination, the coefficient of oxidative stress was calculated. Statistical processing of results was performed using parametric and nonparametric methods. The study of indicators of the free radical oxidation process found that adolescents with hypoandrogenism have multidirectional changes in the oxidation of proteins and lipids, namely: the level of conjugated dienes increases, the concentration of malondialdehyde remains at the level of the control group, and the level of carbonated proteins tends to decrease. As for the activity of antioxidant protection enzymes, a significant decrease in the level of glutathione peroxidase was detected, while the level of superoxide dismutase and catalase remained at the level of normative indicators. Oxidative stress accompanies and is one of the pathogenetic links in the formation or maintenance of the state of hypoandrogenism in boys. This requires the use of antioxidants, the complex of which must be selected individually.

scholarly journals Some indicators of free radical oxidation and antioxidant protection in the erythrocytes of former athletes

2021 ◽  
Vol 11 (3) ◽  
pp. 12-17
Author(s):  
A. V. Elikov
Keyword(s):  
Superoxide Dismutase ◽  
Free Radical ◽  
Free Radical Oxidation ◽  
The State ◽  
Control Group ◽  
Enzymatic Antioxidants ◽  
Antioxidant Protection ◽  
Radical Oxidation ◽  
Former Athletes ◽  
Oxidative Balance

Objective: to study the main indicators of free radical oxidation and antioxidant protection in the erythrocytes of former athletes, depending on the period of termination of sports.Materials and methods: 24 former male athletes aged 19–29 years were examined, who were divided into 2 groups of 12 people each (1st group — former athletes who stopped training for up to 2 years; 2nd — over 2 years). The control group consisted of 15 practically healthy untrained student volunteers of the same age. In erythrocytes, spectrophotometrically (spectrophotometer Shimadzu 1240, Japan), the activity of antioxidant enzymes was determined: superoxide dismutase (SOD) (K.F. 1.15.1.1) — by inhibiting the reduction of nitro blue tetrazolium by superoxide anion radical at λ = 540 nm, after preliminary processing of erythrocytes by the method of Dubinina E.E. and others [8]; catalase (K.F. 1.11.1.6) — according to the rate of utilization of hydrogen peroxide at λ = 260 nm; glutathione peroxidase (HP) (KF 1.11.1.9) — by the change in the content of reduced glutathione in samples before and after incubation of the substrate with dithiobis-nitrobenzoic acid at λ = 412 nm; glutathione reductase (GR) (K.F. 1.6.4.2) — according to the catalytic NADPH ∙ H+-dependent transformation of the oxidized form of glutathione into the reduced form, the intensity of which was estimated by the rate of decrease in the extinction of samples at λ = 340 nm, at which the NADPH H+ solution has a maximum light absorption (Warburg test).Results: the direction of the shifts in the state of the oxidative balance was established depending on the period of detraining. A significantly lower value of the total antioxidant activity was revealed in the former athletes of the 1st group. This phenomenon is probably associated with a decrease in the efficiency of the enzymatic link of the antioxidant defense in the absence of regular physical exertion, and, as a consequence, an increased consumption of non-enzymatic antioxidants. It was found that the early post-sports period is characterized by significantly lower, in comparison with the control group, the values of the activity of the first-order enzymes (superoxide dismutase) against the background of the increased activity of the second-order enzymes (catalase).Conclusions: the obtained data can be recommended for monitoring the state of athletes who stopped playing sports and taken into account when prescribing rehabilitation measures for the corresponding contingent.

scholarly journals Characteristics of influence of 4-[4-oxo-3 h-quinazoline-3-yl] benzoic acid (pc-66) on a course of adrenaline myocardiodystrophy in rats according to biochemical research

2017 ◽  
Author(s):  
O. V. Dzhyhaliuk ◽  
H. I. Stepaniuk ◽  
N. V. Zaichko ◽  
S. I. Kovalenko ◽  
K. P. Shabelnyk
Keyword(s):  
Superoxide Dismutase ◽  
Free Radical ◽  
Glutathione Peroxidase ◽  
Benzoic Acid ◽  
Free Radical Oxidation ◽  
Control Group ◽  
No Production ◽  
Marker Enzymes ◽  
Radical Oxidation ◽  
Group I

According to the literature the leading cause of mortality among the population of Ukraine are cardiovascular diseases, what incidence tripled over the past 25 years and today stands at801.6 in100 000. It necessitates a search for new chemical compounds, suitable for creating manufacturing with a better safety profile and a high degree of efficiency.The aim of the study was to describe the effect of 4-[4-oxo-4N-quinazoline-3- il] benzoic acid (PC-66), compared with kordaron on the processes of free radical oxidation, endothelial nitric oxide production and activity of marker enzymes cytolysis cardiomyocytes adrenaline myocardiodystrophy (AMD) in rats.The study was conducted on 28 nonlinear rats of both sexes (weight – 165–220 grams), divided into four groups: group I (n = 7) – intact rats; group II (n = 7) – rats with untreated AMD (control); group III (n = 7) – rats with AMD treated with entity PC-66 (10 mg/kg intraperitoneally (i/p)); Group IV (n = 7) – rats with AMD treated with kordaron (10 mg/kg, i/p).Research shown that the development of a pilot AMD in rats was characterized by increased free radical oxidation processes, depletion of antioxidant defense system (with decreased content of G-SH, activity of superoxide dismutase and glutathione peroxidase), oppression of endothelial NO production. The most expressive metabolic disturbances were registered in the acute period of AMD (as of 2nd day). The use of 4-[4-oxo-4N-quinazoline-3-il] benzoic acid (PC-66, 10 mg/kg, i/p) provided an expressive cardioprotective effect which was compared with kordaron (10 mg/kg, i/p) at various stages of AMD.The mechanisms of cardioprotective action 4-[4-oxo-4N-quinazoline-3-il] benzoic acid can be realized due to the stabilization of cellular and subcellular membranes (as evidenced by the dynamics of marker enzymes cytolysis cardiomyocytes in serum and reduction of TBA-reactive substances in the myocardium), increasing the efficiency of the antioxidant system and correction of cellular redox buffer (as evidenced by the increasing pool of reduced glutathione, glutathione peroxidase and superoxide dismutase activity increased) and anti-ischemic activity associated with increased activity of endothelial NO synthase in cardiac muscle.

Gender differences in biochemical measurement reflecting the state of free-radical oxidation and antioxidant protection among workers in metallurgical production

2019 ◽  
Vol 1 (10) ◽  
pp. 877-881
Author(s):  
I. A. Umnyagina ◽  
L. A. Strakhova ◽  
T. V. Blinova
Keyword(s):  
Oxidative Stress ◽  
Gender Differences ◽  
Free Radical ◽  
Biochemical Parameters ◽  
Free Radical Oxidation ◽  
The Body ◽  
Antioxidant Protection ◽  
Radical Oxidation ◽  
Metallurgical Production ◽  
Production Factors

Introduction. To date, age and sex differences have been established for many biochemical parameters. Gender differences in indicators for systems such as antioxidant, thiol-disulfide, oxidative stress and inflammation systems are absent or under study.The aim of the study was to identify gender differences in biochemical parameters reflecting the functioning of antioxidant systems of the body and free radical oxidation in workers of metallurgical production, in contact with harmful production factors.Materials and methods. The blood of men and women working at the metallurgical enterprise of the Nizhny Novgorod region (n=80) under the influence of a complex of physical and chemical production factors was studied. Total oxidative stress, total antioxidant capacity of serum, glutathione levels were studied by photometric biochemical methods. Levels of C-reactive protein and 8-hydroxy–2-deoxyguanosine were studied by ELISA.Results. The average amount of peroxides in the serum of women exceeded 1.6 times this figure in men. In the group of men, the content of 8-Ondg was higher by 26% (p=0.012), the level of GS-by 12% (p=0.019), the activity of SOD — by 1.5–2 times (p=0.0001), the level of CRP — by 2 times (p=0.008) compared to similar indicators in women.Conclusions. Studies of gender differences in workers under the influence of harmful production factors will allow more effective approach to the etiology, treatment and prognosis of production-related diseases. Indicators of oxidative stress and antioxidant protection can be indicators of the health of workers under the influence of harmful industrial factors and be important in the prevention of diseases associated with oxidative stress.

scholarly journals Correction of the state of antioxidant protection system of the fowl’s organism under the circumstances of being poisoned by Derosal

2020 ◽  
Vol 22 (98) ◽  
pp. 46-50
Author(s):  
O. S. Kochevenko ◽  
I. O. Zhukova ◽  
O. M. Bobrytska ◽  
I. O. Kostiuk ◽  
L. A. Vodopyanova
Keyword(s):  
Superoxide Dismutase ◽  
Free Radical ◽  
Free Radical Oxidation ◽  
The State ◽  
The Body ◽  
Superoxide Dismutase Activity ◽  
Antioxidant Protection ◽  
Diene Conjugates ◽  
Active Forms Of Oxygen ◽  
Radical Oxidation

In fact, Free radical oxidation is one of the required factors of homeostasis as far as the active forms of oxygen, which have unpaired electron, perform useful functions, they are necessary intermediaries of numerous processes of normal cells’ functioning such as biosynthesis of prostaglandins and leukotriene as well as other biologically active substances. Also, they take part in pathological processes such as: inflammation, fever and others. Free radical oxidation is the process of direct oxygen transferring to the substrate forming peroxide, ketones, aldehydes, etc. Some amino acids, proteins, water and carbohydrates prone to the processes of peroxidation, but crucial place is granted to lipids at the expanse of fatty acids which are included to their composition. The article highlights the information concerning the analysis of the state of antioxidant system of hens in the process of feeding them with subtoxic doses of fungicide of Derosal (BAYER, Germany) (0.1 LD50 for a fowl, 900 mg/kg of the body mass) which active ingredient is benzimidazole carbamate (carbendazim, BMC). It presents the changes of these indicators in the process of using pharmacological and natural antioxidants. The analysis has figured out that giving Derosal to the hens without corrections (II group) has been followed with the activation of the process of lipids’ peroxidation (POL) in the blood plasma, that is followed with the increase of concentration of primary and secondary lipoperoxidation products – diene conjugates (DC) and TBA-active products on the average up to 21.0–25.0 %, catalase activity – up to 38.5 % and decrease of superoxide dismutase activity (SOD) up to 21.8 % and АОА – up to 17.8 %, that shows the adverse effects of pesticides on the system of antioxidant protection of the organism. In the fowls’ groups III, IV and V the adding of antioxidant E-selenium, ascorbic acid and thermally untreated buckwheat seeds as the source of  quercetins and anthocyanins has led to the induction of antioxidant resources that is shown by the decrease in comparison with the control of content of diene conjugates, malonic dialdehyde and catalase (in average up to 13.6–33.6–18.0 % accordingly) and compensatory strengthening of superoxide dismutase activity and general activity of antioxidant (АОА) on the average up to 44.9–72.1–76.5 % and 15.3–13.4–21.7 % accordingly. In comparison with group II the activity of catalase has been lower as well as the activity of superoxide dismutase has been higher in all the groups almost in 1.5–2 times (Р ≤ 0.001).

scholarly journals Metabolic disorders in liver in late period of cranial-skeletal trauma and their correction by Thiocetam

2015 ◽  
Vol 17 (2) ◽  
Author(s):  
I. A. Mykhaylyuk ◽  
A. A. Hudyma
Keyword(s):  
Superoxide Dismutase ◽  
Free Radical ◽  
Metabolic Disorders ◽  
Free Radical Oxidation ◽  
Antioxidant Protection ◽  
Late Period ◽  
Skeletal Trauma ◽  
Radical Oxidation ◽  
Antioxidant Mechanisms

<p>In the conditions of cranial-skeletal trauma throughout the period of late signs of traumatic disease (14–28 days),<br />the processes of lipidic peroxidation don’t calm down, the activity of antioxidant protection ferments remains reduced,<br />the pro-oxidant mechanisms dominate. The use of thiocetam in 250 mg/kg dosage intraperatoneal throughout 14<br />days after striking of cranial-skeletal trauma essentially lowers the manifestations of free radical oxidation of the<br />lipids, the activity of superoxide dismutase and catalase increases, the antioxidant mechanisms predominate. By<br />the 28th day the normalization of the most of the indices occurs.</p>

scholarly journals PSX-3 Antioxidant system characteristics in Saanen goats depending on performance

2020 ◽  
Vol 98 (Supplement_4) ◽  
pp. 461-462
Author(s):  
Polina D Bokhan ◽  
Alesya A Bakhta ◽  
Larisa Y Karpenko ◽  
Anna I Kozitcyna ◽  
Anna B Balykina ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Free Radical ◽  
Milk Yield ◽  
Antioxidant System ◽  
Free Radical Oxidation ◽  
Dairy Goat ◽  
Blood Levels ◽  
Lactation Performance ◽  
Radical Oxidation ◽  
System Characteristics

Abstract Dairy goat breeding is widespread worldwide. Goat milk and other derivative products are an important part of nutrition. Dairy products are the most important part of goat breeding; therefore, lactation performance is a relevant issue. The purpose of this study was to evaluate antioxidant system characteristics in Saanen goats depending on lactation performance. The experiment was conducted in the north-western region of Russian Federation, in the laboratories of the biochemistry and physiology departments at FSBEI of Higher Education «SPbSAVM». The three experimental groups included 30 Saanen goats each, 2nd–3rd lactations, selected using matched pairs method. 1st group included low milk producing ability goats (&lt; 600 kg of milk yield per year), 2nd group included average milk producing ability goats (600–800 kg of milk yield per year), 3rd group included high milk producing ability goats (&gt;800 kg of milk yield per year). The blood samples were taken once: at peak lactation performance (45 days after parturition). The blood levels of lipid peroxygenation markers (malondialdehyde, dienketone and conjugated dienes) and superoxide dismutase and catalase activity were assessed by standard methods. Results presented as mean±standard error of the mean. Student’s t-test was used after proving normal distribution. Level of significance is labeled as P &lt; 0.05. The results are displayed in table 1 and 2. After analyzing the received data of antioxidant system characteristics, we found a high intensity of free-radical oxidation in high milk producing ability goats. This results in oxidative stress development. Activity of anti-oxidizing enzymes was elevated; therefore, free-radical oxidation is intensive. Consequently, these data allow us to take into consideration exogenous anti-oxidizing agents administration in high milk producing ability goats in order to reduce oxidative stress.

Peripheral levels of superoxide dismutase and glutathione peroxidase in youths in ultra-high risk for psychosis: a pilot study

CNS Spectrums ◽  
2017 ◽  
Vol 24 (03) ◽  
pp. 333-337 ◽  
Author(s):  
Maiara Zeni-Graiff ◽  
Adiel C. Rios ◽  
Pawan K. Maurya ◽  
Lucas B. Rizzo ◽  
Sumit Sethi ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
At Risk ◽  
Superoxide Dismutase ◽  
High Risk ◽  
Glutathione Peroxidase ◽  
Healthy Control Group ◽  
Enzyme Linked Immunosorbent Assay ◽  
Control Group ◽  
Ultra High Risk ◽  
Healthy Control

IntroductionOxidative stress has been documented in chronic schizophrenia and in the first episode of psychosis, but there are very little data on oxidative stress prior to the disease onset.ObjectiveThis work aimed to compare serum levels of superoxide dismutase (SOD) and glutathione peroxidase (GPx) in young individuals at ultra-high risk (UHR) of developing psychosis with a comparison healthy control group (HC).MethodsThirteen UHR subjects and 29 age- and sex-matched healthy controls (HC) were enrolled in this study. Clinical assessment included the Comprehensive Assessment of At-Risk Mental States (CAARMS), the Semi-Structured Clinical Interview for DSM-IV Axis-I (SCID-I) or the Kiddie-SADS-Present and Lifetime Version (K-SADS-PL), and the Global Assessment of Functioning (GAF) scale. Activities of SOD and GPx were measured in serum by the spectrophotometric method using enzyme-linked immunosorbent assay kits.ResultsAfter adjusting for age and years of education, there was a significant lower activity of SOD and lower GPX activity in the UHR group compared to the healthy control group (rate ratio [RR]=0.330, 95% CI 0.187; 0.584, p&lt;0.001 and RR=0.509, 95% CI 0.323; 0.803, p=0.004, respectively). There were also positive correlations between GAF functioning scores and GPx and SOD activities.ConclusionOur results suggest that oxidative imbalances could be present prior to the onset of full-blown psychosis, including in at-risk stages. Future studies should replicate and expand these results.

Analysis of the content of zinc ions in the ejaculate of men with inflammatory diseases of the genitourinary system with indicators of sperm motility

2021 ◽  
pp. 28-32
Author(s):  
O.A. Gizinger
Keyword(s):  
Superoxide Dismutase ◽  
Plasma Membrane ◽  
Free Radical ◽  
Seminal Plasma ◽  
Inflammatory Diseases ◽  
Free Radical Oxidation ◽  
Zinc Ions ◽  
Radical Oxidation ◽  
Genitourinary System ◽  
Sperm Dna

The results of previous studies have shown that the content of zinc ions in the semen significantly correlated with the number of sperm and influenced the volume of ejaculate. After ejaculation, the zinc contained in the seminal plasma binds to the plasma membrane and stabilizes the sperm DNA. Due to its cyto- and immunoprotective properties: induction of zinc-dependent superoxide dismutase, protection of DNA and transcriptional proteins from free radical oxidation, inhibition of proteinases, zinc is an indispensable trace element in the processes of DNA synthesis and repair, embryogenesis and reproduction.

scholarly journals Intensity of cardiac free-radicals processes and expression of glutathione peroxidase and glutathione reductase genes in rats with adrenaline

2012 ◽  
Vol 58 (5) ◽  
pp. 530-538 ◽  
Author(s):  
I.Y. Iskusnykh ◽  
T.N. Popova ◽  
O.S. Musharova
Keyword(s):  
Free Radical ◽  
Glutathione Peroxidase ◽  
Glutathione Reductase ◽  
Free Radical Oxidation ◽  
Pathological Process ◽  
Mrna Levels ◽  
Maximal Increase ◽  
Radical Oxidation ◽  
Polymerase Chain ◽  
Radical Processes

The correlation between changes in activities of glutathione peroxidase and glutathione reductase in heart of rats during development of adrenaline myocarditis and intensity of free radical processes estimated by biochemiluminesce parameters and the content of lipoperoxidation products was demonstrated. The maximal increase of glutathione peroxidase and glutathione reductase activities (in 1.8 and 1.4 times accordingly) was observed t 24 h after the development of the pathological process; this coincided with the maximum intensity of prosesses of free radical oxidation. Using combination of reverse transcriptions with real-time polymerase chain reaction the cardiac mRNA levels of glutathione peroxidase and glutathione reductase genes were determined during the development of adrenaline myocarditis in rats. Analysis of expression of glutathione peroxidase and glutathione reductase genes showed, that the level of this transcripts demonstrated 2,8- and 7,3- increase in rats with adrenaline myocarditis, respectively. Obviously, overexpression of these enzymes can increase the resistance of cardiomyocites to oxidative stress.

Hippocampal Oxidative Stress Induced by Radiofrequency Electromagnetic Radiation and the Neuroprotective Effects of Aerobic Exercise in Rats: A Randomized Control Trial

2021 ◽  
pp. 1-7
Author(s):  
Mina Rasouli Mojez ◽  
Abbas Ali Gaeini ◽  
Siroos Choobineh ◽  
Mohsen Sheykhlouvand
Keyword(s):  
Oxidative Stress ◽  
Superoxide Dismutase ◽  
Glutathione Peroxidase ◽  
Aerobic Exercise ◽  
Electromagnetic Radiation ◽  
Antioxidant Capacity ◽  
Electromagnetic Waves ◽  
Control Group ◽  
And Control ◽  
Radiofrequency Electromagnetic Radiation

Background: The present study determined whether 4 weeks of moderate aerobic exercise improves antioxidant capacity on the brain of rats against oxidative stress caused by radiofrequency electromagnetic radiation emitted from cell phones. Methods: Responses of malondialdehyde, catalase, glutathione peroxidase, and superoxide dismutase, as well as the number of hippocampal dead cells, were examined. Male Wistar rats (10–12 wk old) were randomly assigned to 1 of 4 groups (N = 8): (1) moderate aerobic exercise (EXE) (2 × 15–30 min at 1215 m/min speed with 5 min of active recovery between sets), (2) exposure to 900/1800 MHz radiofrequency electromagnetic waves 3 hours per day (RAD), (3) EXE + RAD, and (4) exposure to an experimental phone without battery. Results: Following the exposure, the number of the hippocampal dead cells was significantly higher in group RAD compared with groups EXE, EXE + RAD, and control group. Malondialdehyde concentration in group RAD was significantly higher than that of groups EXE, EXE + RAD, and control group. Also, the activity of catalase, glutathione peroxidase, and superoxide dismutase in groups EXE, EXE + RAD, and control group was significantly higher compared with those of the exposure group. Conclusion: This study demonstrated that moderate aerobic exercise enhances hippocampal antioxidant capacity against oxidative challenge in the form of radiofrequency electromagnetic waves.

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