Topical GHK-Cu is a local intervention: the copper tripeptide is placed directly against the tissue it is meant to influence, and only a limited fraction reaches deeper layers or the systemic circulation
TB-500 requiere parenteral
After blocking with 5% milk in TBST buffer, the membrane was incubated with primary antibodies followed by appropriate horseradish peroxidase-conjugated secondary antibodies (listed in Supplementary Table 1)
Lack of FDA approval and standardized clinical data limits confirmed use in medical practice despite promising preclinical findings
However, practical experience suggests both approaches produce beneficial outcomes, with the choice often driven by convenience rather than optimization concerns
In the loading dose group, daily intranasal cobalamin administration led to a rapid rise in total serum vitamin B12 levels, increasing from a median of 230 to 1090 pmol/L within two weeks