Yes, the copper(II) ion is critical for GHK-Cu's biological activity
For example, alcohol causes the malfunctioning of biological signalling molecules by increasing the amount of ROS, while decreasing the levels of cellular antioxidants (267), leading to the accumulation of acetaldehyde (268) and causing cell apoptosis as a result of it inducing mitochondrial dysfunction (269)
Glutathione levels decline measurably with age due to reduced precursor availability, which contributes to elevated oxidative stress, mitochondrial dysfunction, and impaired immune regulation
While this might partly subcellular compartmentation and the lower reducing power (higher redox potential) of ascorbate compared to glutathione, NADH, and NADPH, it also points to efficient co-operation between the various isoforms of the three reductases
Curcumin, from turmeric , can reduce inflammation with arthritis, including both osteoarthritis and rheumatoid arthritis