ghk-cu receptor desensitization or tolerance downregulation The Effect of the Human Peptide GHK on Gene Expression Relevant to Nervous System Function and Cognitive Decline GPCR Desensitization: Acute and Prolonged – ghk-cu tolerance desensitization receptor downregulation

GHK-Cu (Glycyl-L-Histidyl-L-Lysine-copper, 402 Da) is a tripeptide-copper complex naturally present in human plasma

Adding copper peptides accelerates early results but may not dramatically change long-term outcomes

Severe or concerning symptoms warrant medical attention and discontinuation of use

Among the synaptic proteins, cell adhesion molecules (neuroligins (NLGNs) 176 and neurexins (NRXNs) 61 ), postsynaptic scaffolding proteins (SH3 and multiple ankyrin repeat domains protein (SHANK), 177 glutamate receptors (NMDAR subunit, GluN2B), 178 inhibitory GABA A receptor subunits 3 and 3 (GABRA3 and GABRB3, respectively) 179 and permeable ion channels (voltage-dependent calcium channel subunit 1C (CACNA1C) 180 and sodium channel protein type 1 subunit- (SCN1A) 181 ) are reported to be important signal transduction molecules associated with ASD

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