Emerging peptide therapeutics: Innovation, delivery, and clinical translation
At the hair bulb, melanocyte stem cells differentiate into melanocytes i.e., cells that can produce melanin
Current research indicates that the cell cycle arrest depends on the activity of cyclin-dependent kinase inhibitors (CDK) p16 and p21, often regulated by the main tumor suppressor protein p53, whose elevated level is frequently used as a marker of senescence detection [21]
The peptide diffuses from the fat layer toward deeper structures
In conclusion, in a meta-analysis of four studies, which included 259 AD patients and 307 healthy controls, it was observed that AD patients had significantly lower serum vitamin E levels than the control group (standardized mean difference: -1.08, 95% CI: 1.80 to 0.36) (81)
However, challenges remain in addressing issues related to targeting, safety, and delivery efficiency