scholarly journals Effects of Vitamin E Supplementation on Exercise-induced Oxidative Stress: Friend or Foe?

2018 ◽  
Vol 19 (2) ◽  
pp. 89-94
Author(s):  
Asli Devrim ◽  
◽  
Aylin Ayaz ◽  
Keyword(s):  
Oxidative Stress ◽  
Vitamin E ◽  
Exercise Induced ◽  
Vitamin E Supplementation

Exercise-induced oxidative stress and muscle performance in healthy women: role of vitamin E supplementation and endogenous oestradiol

2001 ◽  
Vol 84 (1-2) ◽  
pp. 141-147 ◽  
Author(s):  
Bedrettin Akova ◽  
Esma Sürmen-Gür ◽  
Hakan Gür ◽  
Melahat Dirican ◽  
Emre Sarandöl ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Vitamin E ◽  
Muscle Performance ◽  
Healthy Women ◽  
Exercise Induced ◽  
Vitamin E Supplementation

Fish oil and vitamin E supplementation in oxidative stress at rest and after physical exercise

1997 ◽  
Vol 83 (1) ◽  
pp. 189-195 ◽  
Author(s):  
Chandan K. Sen ◽  
Mustafa Atalay ◽  
Jyrki Ågren ◽  
David E. Laaksonen ◽  
Sashwati Roy ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Lipid Peroxidation ◽  
Vitamin E ◽  
Physical Exercise ◽  
Fish Oil ◽  
Protein Oxidation ◽  
Protein Carbonyl ◽  
Oxidative Protein Damage ◽  
Exercise Induced ◽  
Vitamin E Supplementation

Sen, Chandan K., Mustafa Atalay, Jyrki Ågren, David E. Laaksonen, Sashwati Roy, and Osmo Hänninen. Fish oil and vitamin E supplementation in oxidative stress at rest and after physical exercise. J. Appl. Physiol.83(1): 189–195, 1997.—Fish oil supplementation and physical exercise may induce oxidative stress. We tested the effects of 8 wk of α-tocopherol (vitamin E) and fish oil (FO) supplementation on resting and exercise-induced oxidative stress. Rats ( n = 80) were divided into groups supplemented with FO, FO and vitamin E (FOVE), soy oil (SO), and SO and vitamin E (SOVE), and for FOVE and SOVE they were divided into corresponding exercise groups (FOVE-Ex and SOVE-Ex). Lipid peroxidation [thiobarbituric acid-reacting substances (TBARS)] was 33% higher in FO compared with SO in the liver, but oxidative protein damage (carbonyl levels) remained similar in both liver and red gastrocnemius muscle (RG). Vitamin E supplementation, compared with FO and SO, markedly decreased liver and RG TBARS, but liver TBARS remained 32% higher in FOVE vs. SOVE. Vitamin E also markedly decreased liver and RG protein carbonyl levels, although levels in FOVE and SOVE were similar. Exercise increased liver and RG TBARS and RG protein carbonyl levels markedly, with similar levels in FOVE-Ex and SOVE-Ex. FO increased lipid peroxidation but not protein oxidation in a tissue-specific manner. Vitamin E markedly decreased lipid peroxidation and protein oxidation in both FOVE and SOVE, although liver lipid peroxidation remained higher in FOVE. Despite higher levels of hepatic lipid peroxidation at rest in FOVE compared with SOVE, liver appeared to be relatively less susceptible to exercise-induced oxidative stress in FOVE.

Vitamin E Supplementation Increases LDL Resistance to ex vivo Oxidation in Hemodialysis Patients

2003 ◽  
Vol 73 (4) ◽  
pp. 290-296 ◽  
Author(s):  
Badiou ◽  
Cristol ◽  
Morena ◽  
Bosc ◽  
Carbonneau ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Vitamin E ◽  
High Performance ◽  
Ex Vivo ◽  
Density Lipoprotein ◽  
Thiobarbituric Acid ◽  
Hemodialysis Patients ◽  
Ldl Oxidation ◽  
Oral Vitamin ◽  
Vitamin E Supplementation

Background: Oxidative stress and alterations in lipid metabolism observed in hemodialysis patients potentiate the low-density lipoprotein (LDL) oxidability, recognized as a key event during early atherogenesis. Objective: To explore the effects of an oral vitamin E supplementation on oxidative stress markers and LDL oxidability in hemodialysis patients. Methods: Fourteen hemodialysis patients and six healthy volunteers were given oral vitamin E (500 mg/day) for six months. Oxidative stress was assessed using: plasma and lipoprotein vitamin E levels [high-performance liquid chromatography (HPLC) procedure]; thiobarbituric acid reactive substances (TBARS, Yaggi method); and copper-induced LDL oxidation. All parameters were evaluated before initiation of vitamin E supplementation, and at three and six months thereafter. Results: At baseline, a significantly higher TBARS concentration and a higher LDL oxidability were observed in hemodialysis patients when compared to controls. After six months of vitamin E supplementation, TBARS and LDL oxidability were normalized in hemodialysis patients. Conclusion: Our data confirm that hemodialysis patients are exposed to oxidative stress and increased susceptibility to ex vivo LDL oxidation. Since oral vitamin E supplementation prevents oxidative stress and significantly increases LDL resistance to ex vivo oxidation, supplementation by natural antioxidants such as vitamin E may be beneficial in hemodialysis patients.

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