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Updated: May 23, 2026

Rapid Quantification of Oxidized and Reduced Forms of Glutathione Using Ortho -phthalaldehyde in Cultured Mammalian Cells In Vitro
Published on: June 28, 2024
[Effects of organic selenium supplement on glutathione peroxidase activities: a meta-analysis of randomized
Xia Jiang1, Jiayi Dong, Bo Wang
1Department of Nutrition and Food Hygiene, School of Radiation Medicine and Public Health, Soochow University, Suzhou 215123, China. whojx@126.com
Objective:
To study the effects of organic selenium supplementation on glutathione peroxidase (GPx) activities.
Methods:
Randomized controlled trials (RCT) published from January 1988 to December 2010 on the relationship between organic selenium supplementation and GPx activities were collected. Meta-analysis was applied to estimate the combined standardized mean difference (SMD) and 95% confidence interval (95% CI).
Results:
A total of 10 RCTs were included. The number of studies observing GPx activities in plasma, erythrocyte and platelet was 8, 5 and 5, respectively. Compared with the controls, the combined SMD (95% CI) of GPx activities in plasma, erythrocyte and platelet of subjects supplemented with organic selenium was 0.46 (0.09 - 0.83), 0.36 (0.02 - 0.69) and 0.56 (-0.02 - 1.15).
Conclusion:
Supplementation with organic selenium increases GPx activities in healthy adults.
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