Interestingly, early studies demonstrated that the Vitamin D receptor (VDR) binds to Vitamin D response elements (VDREs) to induce expression of the human antimicrobial peptide (CAMP) gene, thereby enhancing innate immune function in mammals [238]
It also helps maintain the activity of other antioxidants, contributing to overall cellular balance and immune function
This effect is consistent with the usual physiological responses observed when fish were exposed to a variety of toxicants
Upon its efflux from cells, oxidised glutathione is exposed to the sequential action of enzymes located on the external face of the cell membrane: -glutamyl transpeptidase (GGT) generates glutamate 94 and the cysteinylglycine dipeptide, which is degraded by dipeptidases such as aminopeptidase N (APN), thereby releasing cysteine and glycine
This peptide duo is intended strictly for research protocols only and is not approved for human therapeutic use
The FDAs July 2026 PCAC agenda lists both forms together as Epitalon-related bulk drug substances