scholarly journals Effects of Electromagnetic Field on Free‐Radical Processes in Steelworkers. Part I: Magnetic Field Influence on the Antioxidant Activity in Red Blood Cells and Plasma

2002 ◽  
Vol 44 (4) ◽  
pp. 226-229 ◽  
Author(s):  
Bogusław Kula ◽  
Andrzej Sobczak ◽  
Rafał Kuśka
Keyword(s):  
Magnetic Field ◽  
Antioxidant Activity ◽  
Electromagnetic Field ◽  
Free Radical ◽  
Red Blood Cells ◽  
Blood Cells ◽  
Free Radical Processes ◽  
Radical Processes ◽  
Field Influence

scholarly journals Synthesis and Antioxidant of Some New Pyrazolo[1,5-a]pyrimidine, Pyrazolo[5,1-b]quinazoline and Imidazo[1,2-b]pyrazole Derivatives Incorporating Phenylsulfonyl Moiety

2021 ◽  
Vol 10 (3) ◽  
pp. 2414-2428
Keyword(s):  
Antioxidant Activity ◽  
Free Radical ◽  
Red Blood Cells ◽  
Blood Cells ◽  
Protective Effects ◽  
Oxidative Hemolysis ◽  
Elemental Analyses ◽  
Phenolic Group ◽  
High Antioxidant Activity ◽  
New Compounds

The synthesis and antioxidant of some new pyrazole analogs were described. It is achieved by the reaction of phenyl-4-(phenylsulfonyl)-1H-pyrazole-3,5-diamine (3) with different bifunctional reagents. The free radical-induced damage and the protective effects of the newly synthesized pyrazoles were studied. These new compounds inhibit the free radical-induced oxidative hemolysis of red blood cells effectively. It was found that these compounds effectively inhibit the free radical-induced oxidative hemolysis of red blood cells. Compound 5, which contain phenolic group, and 17, which bear sulfur, nitrogen atoms, and benzothiazole ring, respectively displayed high antioxidant activity. Analogs 15, 11, 10, and 9 were proved to exhibit antioxidative activity. Structures of new pyrazoles were confirmed by spectroscopic and elemental analyses and have been screened for their antioxidant activity.

scholarly journals Antioxidant system of rats with heavy metals and phospoorganic pesticides intoxication and peptides applying

2015 ◽  
Vol 17 (3) ◽  
Author(s):  
Ye. B. Dmukhalska ◽  
Ya. I. Honsky
Keyword(s):  
Heavy Metals ◽  
Lipid Peroxidation ◽  
Antioxidant Activity ◽  
Antioxidant Enzymes ◽  
Free Radical ◽  
Antioxidant System ◽  
The State ◽  
Antioxidant Protection ◽  
Free Radical Processes ◽  
Radical Processes

<p>The effect of peptide tsysteil-histidil-tyrosil-histidil-isoleucine on the state of antioxidant protection (superoxide<br />dismutase, catalase) and lipid peroxidation has been reached. The peptide exhibits antioxidant activity, the correction<br />of the peptide reduces free radical processes and decreases the products of lipid peroxidation and increases<br />antioxidant enzymes activity.</p>

The Study of Free Radical Processes and Antioxidant Activity of Hybrid Composites with Hydroxyapatite on the Basis of Polystyrene In Vitro

10.12737/7285 ◽  
2014 ◽  
Vol 21 (4) ◽  
pp. 129-133
Author(s):  
Багровская ◽  
N. Bagrovskaya ◽  
Алексеева ◽  
O. Alekseeva ◽  
Назаров ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Free Radical ◽  
Blood Serum ◽  
Hybrid Composites ◽  
Malonic Dialdehyde ◽  
Total Blood ◽  
Free Radical Processes ◽  
Mechanical Dispersion ◽  
Radical Processes

The polystyrene composites, received by application polymeric solution (polystyrene) on teflon base sheet with the following samples drying at 293 K to constant mass were studied. The hydroxiapatite particles immobilization in polysterene matrix was made by mechanical dispersion. The polimeric’s systames hydroxiapatite concentration were 0,03; 0,1; 0,5 mac.%. The authors determined sorption and structural hydroxiapatite’s characteristics such as specific surface area and pore volume. The authors studied the influence of hydroxiapatite concentration in composites on lipid free radical processes and antioxidant activity of confluent blood serum and confluent serum after contact with composite, including hydroxiapatite in vitro. It was noted that polymeric composites with 0,1 and 0,5 mac% hydroxiapatite concentration increase the hemiluminescence parameters based on hemiluminescence analysis: fast flashes Imax and lightsum S. These data argue for free radical processes activation, so curve slope ratio increased tga and parameters A and Z decreased. It’s reflects the antioxidant activity increasing. The authors performed the investigation of malonic dialdehyde content and total blood serum antioxidant activity by spectrophotometry. The antioxidant activity increasing after composites impact, including 0.5mac% hydroxiapatite in confluent blood serum was determined. These data argue for composites’ antioxidant effects in comparison with control blood serum.

Flow-injection methods for the determination of antioxidant activity based on free-radical processes

2012 ◽  
Vol 67 (10) ◽  
pp. 801-808 ◽  
Author(s):  
L. K. Shpigun ◽  
N. N. Zamyatina ◽  
Ya. V. Shushenachev ◽  
P. M. Kamilova
Keyword(s):  
Antioxidant Activity ◽  
Free Radical ◽  
Flow Injection ◽  
Free Radical Processes ◽  
Injection Methods ◽  
Radical Processes
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