In a follow-up study, the same team reported that, in neuroblastoma cells, folic acid deficiency contributed to decreased SAMe levels, and induced downregulation of LCMT-1 expression [174]

Subcutaneous Injection Sites Abdomen 2+ inches from navel, rotating around stomach area Outer Thighs Mid to upper outer thigh regions Upper Arms Back of upper arm (harder to self-inject) Upper Outer Quadrant of Buttocks Upper outer region for easy self-administration Proper Injection Technique Technique involves: Clean injection site with alcohol swab Pinch skin to create fold Insert needle at 45-90 angle into subcutaneous tissue Inject slowly and steadily Remove needle and apply gentle pressure without rubbing Critically: Rotate injection sites to never use the same spot consecutively Important Injection Considerations GHK-Cu specifically can cause injection site reactions ranging from mild to moderate pain due to copper peptide irritation, with possible redness, swelling, or knot formation lasting several days
Adv Sci 11:2305913 Hu D, Li X, Li J et al (2023) The preclinical and clinical progress of cell sheet engineering in regenerative medicine
[DOI] [PubMed] [Google Scholar] 73.Nampoothiri S.V., Prathapan A., Cherian O.L., Raghu K.G., Venugopalan V.V., Sundaresan A
Baumann, S