Protective effect of Scutellaria species on AAPH-induced oxidative damage in human erythrocyte

2015 ◽  
Vol 0 (0) ◽  
Author(s):  
Sasidharan Salini ◽  
Menon Kunnathully Divya ◽  
Thomas Chubicka ◽  
Nair Meera ◽  
Devanand P. Fulzele ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Lipid Peroxidation ◽  
Oxidative Damage ◽  
Protective Effect ◽  
Human Erythrocyte ◽  
Membrane Lipid ◽  
Protein Damage ◽  
Membrane Lipid Peroxidation

AbstractOxidative stress in erythrocyte was induced by AAPH. The inhibition of hemolysis, membrane lipid peroxidation, and protein damage by chloroform extracts ofApproximately 95% of erythrocytes were lysed by AAPH over 3 h of incubation. Significant reduction in hemolysis was observed by the extracts, and the ICResults indicate that

scholarly journals Role of Membrane Lipid Peroxidation, Enzymatic and Non-enzymatic Antioxidative Systems in the Development of Chilling Injury in Japanese Plums

2012 ◽  
Vol 137 (6) ◽  
pp. 473-481 ◽  
Author(s):  
Sukhvinder Pal Singh ◽  
Zora Singh
Keyword(s):  
Oxidative Stress ◽  
Lipid Peroxidation ◽  
Cold Storage ◽  
Chilling Injury ◽  
Membrane Lipid ◽  
Enzymatic Antioxidants ◽  
Membrane Lipid Peroxidation ◽  
Stress Theory ◽  
Antioxidative Systems ◽  
Duration Of Storage

Chilling injury (CI) is a major postharvest constraint in the long-term cold storage, transportation, and distribution of japanese plums (Prunus salicina). The aim of the work was to explain the development and severity of CI in japanese plums based on the oxidative stress theory following time course analysis of enzymatic and non-enzymatic antioxidants. Changes in membrane lipid peroxidation and enzymatic and non-enzymatic antioxidative systems in japanese plum cultivar Blackamber were determined at weekly intervals during 5 weeks of cold storage at 0 °C and at 2-day intervals during poststorage simulated shelf conditions (21 ± 1 °C) for 8 days after each week of cold storage. Fruit respiration and ethylene production rates showed typical climacteric patterns after removal from cold storage and these rates were relatively high after 4 and 5 weeks compared with 0 to 3 weeks of storage. The CI symptoms first appeared after 3 weeks of cold storage after fruit had been transferred to simulated shelf conditions. The incidence and severity of CI intensified with increasing storage duration. The extent of lipid peroxidation indicated by concentration of thiobarbituric acid-reactive substances and membrane damage manifested as electrolyte leakage increased with increasing duration of storage and subsequent simulated shelf conditions. Membrane lipid peroxidation exhibited positive correlation with the severity of CI. Activities of primary antioxidant enzymes and the enzymes involved in the ascorbate–glutathione cycle were determined to explain the levels of reduced and oxidized forms of cellular redox buffers, ascorbate and glutathione. In response to chilling stress, antioxidative protection systems operated efficiently during the first 3 weeks of cold storage, but extended storage resulted in loss of ability to ameliorate increasing levels of oxidative stress. In this study, the comprehensive analyses of various metabolites and antioxidative systems explain the series of events involved in development of CI in japanese plums in support of the oxidative stress theory.

scholarly journals Oxidative Stress of Vanadium-Mediated Oxygen Free Radical Generation Stimulated by Aluminium on Human Erythrocytes

1998 ◽  
Vol 35 (2) ◽  
pp. 254-260 ◽  
Author(s):  
M A M Abou-Seif
Keyword(s):  
Oxidative Stress ◽  
Lipid Peroxidation ◽  
Superoxide Dismutase ◽  
Osmotic Fragility ◽  
Thiobarbituric Acid ◽  
Oxygen Free Radical ◽  
Membrane Lipid ◽  
Human Erythrocytes ◽  
Membrane Lipid Peroxidation ◽  
Radical Generation

It has been suggested that aluminium stimulates vanadium-mediated superoxide radical generation. The oxidative stress of generated superoxide radicals on antioxidant enzyme activity, oxidation of NADH and NADPH, membrane lipid peroxidation and osmotic fragility in human red blood cells (RBC) was investigated. RBC were incubated with varying concentrations of vanadium and aluminium ions at 37°C for 2 h. RBC incubated with vanadium ions showed significantly increased superoxide dismutase and catalase activities, and oxidized NADH and NADPH concentrations compared with control RBC preparations. Erythrocyte lipid peroxidation was assessed by measuring thiobarbituric acid reactivity. RBC incubated with elevated levels of vanadium showed significantly increased membrane lipid peroxidation when compared with control RBC; it increased further on addition of aluminium. A significant positive correlation was observed between the extent of vanadium induced membrane lipid peroxidation and the osmotic fragility of treated RBC. In the presence of vanadium, aluminium stimulates superoxide dismutase and catalase activities, NADH and NADPH oxidation and membrane lipid peroxidation, as well as increasing osmotic fragility of human erythrocytes. The stimulatory effect of aluminium was dependent on concentration. These results may have implications for the mechanism of toxicity of aluminium and vanadium in haemodialysis patients.

scholarly journals Nonthermal Dielectric-Barrier Discharge Plasma-Induced Inactivation Involves Oxidative DNA Damage and Membrane Lipid Peroxidation inEscherichia coli

2011 ◽  
Vol 55 (3) ◽  
pp. 1053-1062 ◽  
Author(s):  
Suresh G. Joshi ◽  
Moogega Cooper ◽  
Adam Yost ◽  
Michelle Paff ◽  
Utku K. Ercan ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Lipid Peroxidation ◽  
Dna Damage ◽  
Dielectric Barrier Discharge ◽  
Oxidative Dna Damage ◽  
Barrier Discharge ◽  
Membrane Lipid ◽  
Membrane Lipid Peroxidation ◽  
Dbd Plasma ◽  
Dielectric Barrier

ABSTRACTOxidative stress leads to membrane lipid peroxidation, which yields products causing variable degrees of detrimental oxidative modifications in cells. Reactive oxygen species (ROS) are the key regulators in this process and induce lipid peroxidation inEscherichia coli. Application of nonthermal (cold) plasma is increasingly used for inactivation of surface contaminants. Recently, we reported a successful application of nonthermal plasma, using a floating-electrode dielectric-barrier discharge (FE-DBD) technique for rapid inactivation of bacterial contaminants in normal atmospheric air (S. G. Joshi et al., Am. J. Infect. Control 38:293-301, 2010). In the present report, we demonstrate that FE-DBD plasma-mediated inactivation involves membrane lipid peroxidation inE. coli. Dose-dependent ROS, such as singlet oxygen and hydrogen peroxide-like species generated during plasma-induced oxidative stress, were responsible for membrane lipid peroxidation, and ROS scavengers, such as α-tocopherol (vitamin E), were able to significantly inhibit the extent of lipid peroxidation and oxidative DNA damage. These findings indicate that this is a major mechanism involved in FE-DBD plasma-mediated inactivation of bacteria.

Hepatoprotective role of Solenostemma argel growing in Egypt on ethanol induced oxidative damage in rats

2017 ◽  
Vol 42 (4) ◽  
Author(s):  
Mahgoub Mohamed Ahmed
Keyword(s):  
Oxidative Stress ◽  
Lipid Peroxidation ◽  
Oxidative Damage ◽  
Protective Effect ◽  
Rat Liver ◽  
Adult Male ◽  
Total Protein ◽  
Albino Rats ◽  
Serum Total Protein

AbstractObjective:The objective of the current study is to investigate the protective effect ofMethods:Forty adult male albino rats were divided into four groups as control,Results:The results showed that, administration of EtOH caused a significant decrease (p<0.05) in serum total protein and albumin, whereas ALT and AST and lipid peroxidation (LPO) were increased following EtOH treatment.Conclusion:had a hepatoprotective role against EtOH-induce oxidative stress and inflammation in rat liver.

Combined efficacies of lipoic acid and meso-2,3-dimercaptosuccinic acid on lead-induced erythrocyte membrane lipid peroxidation and antioxidant status in rats

2003 ◽  
Vol 22 (4) ◽  
pp. 183-192 ◽  
Author(s):  
R Sivaprasad ◽  
M Nagaraj ◽  
P Varalakshmi
Keyword(s):  
Oxidative Stress ◽  
Lipid Peroxidation ◽  
Body Weight ◽  
Erythrocyte Membrane ◽  
Lipoic Acid ◽  
Combined Treatment ◽  
Membrane Lipid ◽  
Dimercaptosuccinic Acid ◽  
Membrane Lipid Peroxidation ◽  
Antioxidant Defence System

One of the most intriguing phenomenon observed during lead toxicity has been attributed to lead-induced oxidative stress. The combined effect of DL-a-lipoic acid (LA) and meso 2,3-dimercaptosuccinic acid (DMSA) on lead-induced alterations in selected parameters, which are indicators of oxidative stress in erythrocytes, have been studied. Lead acetate (Pb, 0.2%) was administered in drinking water for 5 weeks to induce toxicity. LA (25 mg/ kg body weight per day i.p.) and DMSA (20 mg/kg body weight per day i.p.) were administered individually and also in combination during week 6. Clinical evidence of toxic exposure was evident from the elevated blood lead levels (BPb) along with lowered levels of haemoglobin (Hb) and haematocrit (Ht). Lead-exposed animals showed enhanced membrane lipid peroxidation (LPO) in the erythrocytes. Damage to the erythrocyte membrane was evident from the decline in the activities of the trans-membrane enzymes, viz., Na1, K1 ATPase, Ca21 ATPase and Mg21 ATPase. Lead-exposed rats also suffered an onslaught on the antioxidant defence system witnessed by lowered activities of catalase (CAT), superoxide dismutase (SOD), glutathione peroxidase (GPx) and reduced glutathione (GSH). Serum glutamic-oxoloacetic transaminase (SGOT) and serum glutamic-pyruvic transaminase (SGPT) were also elevated in lead-exposed rats. Treatment with either LA or DMSA reversed the lead-induced biochemical disturbances encountered by the erythrocytes, but combined treatment with LA and DMSA was very effective in mitigating all the parameters indicative of oxidative stress.

Implications of Oxidative Stress and Cell Membrane Lipid Peroxidation in Human Cancer (Spain)

2004 ◽  
Vol 15 (7) ◽  
pp. 707-719 ◽  
Author(s):  
Paloma Cejas ◽  
Enrique Casado ◽  
Cristobal Belda-Iniesta ◽  
Javier De Castro ◽  
Enrique Espinosa ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Lipid Peroxidation ◽  
Cell Membrane ◽  
Human Cancer ◽  
Membrane Lipid ◽  
Membrane Lipid Peroxidation
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