How GHK Peptide Works Signaling GHK acts as a switch for skin repair: Interacts with adenosine receptors reduces inflammation Activates MAPK ERK, PI3K Akt, TGF pathways Stimulates fibroblasts & keratinocytes boosts collagen, elastin How Often to Inject GHK Cu PeptidesExplorer A) Serum levels of growth hormone (GH) and (B) insulin like growth Download Scientific Diagram Pediatric Implications of Normal Insulin GH IGF Axis Physiology Endotext NCBI Bookshelf Growth hormoneinsulin like growth factor 1 axis. GH binds to a GHR, Download Scientific Diagram Effects of GH IGF I hypersecretion in metabolic organs. Download Scientific Diagram