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Q: What's the best dose of GHK-Cu
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Similar content being viewed by others Log in or create a free account to read this content Gain free access to this article, as well as selected content from this journal and more on nature.com or Abbreviations 8-OH-dg: 8-hydroxy-2-deoxyguanosine AM: airway macrophage BAL: bronchoalveolar lavage ELF: epithelial lining fluid GSH: glutathione (reduced form) GSSG: glutathione disulfide (oxidized form) HAT: histone acetyltransferase HDAC: histone deacetylase ICS: inhaled corticosteroid MDA: malondialdehyde PARP: poly (ADP-ribose) polymerase References Fitzpatrick AM, Gaston BM, Erzurum SC, Teague WG 2006 Features of severe asthma in school-age children: atopy and increased exhaled nitric oxide
Psychol Sci 2015;26:750-8
Metabolism & Elimination Limited characterization of specific metabolic pathways has been published for both peptides: CJC-1295 (NO DAC): Peptidase-mediated degradation represents primary metabolic pathway Four amino acid substitutions provide enhanced resistance to dipeptidyl peptidase-IV Metabolites and degradation products not fully characterized in published literature Clearance from circulation within hours despite sustained pharmacodynamic effects Ipamorelin: Clearance of 0.078 L/h/kg in human pharmacokinetic studies Rapid elimination from plasma following distribution phase Metabolic pathways likely involve proteolytic cleavage at peptide bonds No significant accumulation observed with repeated dosing in animal models A notable pharmacokinetic-pharmacodynamic disconnect exists: despite relatively short plasma half-lives (30 minutes to 2 hours), growth hormone secretory effects persist for 6+ hours, suggesting either active metabolites, tissue retention, or persistent receptor signaling cascade activation
