There are also differences in content of amino acid: GPx1-4 and 6 in human contain selenocysteine, but GPx5, 7, and 8 have cysteine [10]
Lei SZ, Pan ZH, Aggarwal SK, Chen HS, Hartman J, et al
J.CliftonR.ListerR.WhelanJ.MillarA
Its biological meaning depends heavily on context, including the tissue being studied, the local oxidative environment, the NOS isoform involved, and the timing of measurement after experimental injury or stimulation
For individuals already focusing on foundational nutrition through options like plant based protein powder adding targeted antioxidant support can further strengthen overall cellular resilience and metabolic balance
May help peeps with diabetes