10.1016/j.arr.2024.102480 Ageing Res
Chronic stress elevates cortisol, which directly suppresses glutathione synthesis via inhibition of gamma-glutamylcysteine synthetase (GCS), the rate-limiting enzyme in glutathione production
Unless indicated otherwise, cystine-free medium was prepared by supplementing cystine-, methionine- and glutamine-free DMEM (Gibco, CA, USA) with 100 M methionine, 4 mM glutamine, 1 mM sodium pyruvate, 0.2% bovine serum albumin (BSA), 100 U/ml penicillin and 100 g/ml streptomycin
In the rats that received GHK-Cu, the researchers found an increase in total protein and collagen synthesis greater than that of the placebo group, demonstrating that GHK-Cu is able to increase extracellular matrix accumulation in wounds in vivo .28 Are GHK-Cu copper peptides safe