The interplay between intestinal barrier degradation and trace element insufficiency worsens inflammatory bowel disease (IBD). Selenium (se) is essential for glutathione peroxidase 4 (GPX4) synthesis, which protects against intestinal epithelial cell injury in IBD. However, malnutrition and malabsorption limit the availability of dietary selenium. This study investigated the protective effects of naturally occurring seleno-amino acids on the intestinal barrier in an IBD animal model by promoting GPX4 synthesis. L-se-methylselenocystine (seMc) supplementation reversed decreased GPX4 expression levels, alleviated glutathione depletion and scavenged reactive oxygen species
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Huangfu et al. (2024) studied this question.
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