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Abstract Title:

-Tocopherol Ameliorates Redox Equilibrium and Reduces Inflammatory Response Caused by Chronic Variable Stress.

Abstract Source:

Biomed Res Int. 2018 ;2018:7210783. Epub 2018 Nov 8. PMID: 30533439

Abstract Author(s):

Mariola Herbet, Magdalena Izdebska, Iwona Piątkowska-Chmiel, Monika Gawrońska-Grzywacz, Dorota Natorska-Chomicka, Kamil Pawłowski, Marcin Sysa, Brygida Ślaska, Jarosław Dudka

Article Affiliation:

Mariola Herbet

Abstract:

Chronic exposure to stress factors contributes to the development of depression by generating excess of reactive oxygen species which leads to oxidative stress and inflammatory processes. The aim of the study was to assess the potential protective properties of-tocopherol supplementation on the rats exposed to chronic variable stress (CVS). Male Wistar rats (50-55 days old, weighing 200-250 g) were divided into three groups (n=10): control, stressed, and stressed and receiving (+)--tocopherol solution in a dose of 100 mg/kg/day. Rats in the stressed groups were exposed to CVS for 40 days. Markers of redox disorders (glutathione reduced and oxidized levels, GSH/GSSG ratio, glutathione peroxidase, glutathione reductase activities, total antioxidant status, and lipid peroxidation) and inflammatory response (IL-1, IL6, and TNF-) were determined in the blood. Additionally, molecular biomarkers of depression (expression ofand) were studied in hippocampus. The biochemical analysis was inconclusive about the presence of oxidative stress in the blood of rats exposed to CVS. However, changes in all parameters suggest presence of redox equilibrium disorders. Similarly, activation of inflammatory processes was observed as a result of CVS. Molecular effects of environmental stress in hippocampus were also observed. Generally,-tocopherol ameliorated redox equilibrium disorders, tempered inflammatory response, and protected from changes in determined molecular markers of depression.

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Sayer Ji
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