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Drug metabolism by cytochromes P450 in the liver and small bowel

Glutathione neutralizes these free radicals before they can cause harm, helping maintain the integrity of the skin's moisture barrier

Over-the-counter copper peptide products are typically cosmetic-grade, much lower in concentration, and mass-produced to have a shelf life of about a year

Understanding appropriate candidates helps ensure both safety and likelihood of meaningful results

We were exploring ways of developing peptides that bind selectively, and we were very successful at that, but then we confronted the problem that our short, 23-residue peptides are not promising therapeutic candidates primarily because they cannot get into cells, Keating says