Ingredient or product comparison
GHK-Cu Antioxidant Results Timeline: Comparison by Endpoint
Nrf2 Nuclear Translocation 6–12 hours 24–48 hours Immunofluorescence, Western blot Earliest measurable event. Confirms receptor engagement and signalling cascade initiation SOD/Catalase mRNA Upregulation 48–72 hours 5–7 days RT-PCR, qPCR Gene expression preced
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- Nrf2 Nuclear Translocation
- 6–12 hours
- 24–48 hours
- Immunofluorescence, Western blot
- Earliest measurable event. Confirms receptor engagement and signalling cascade initiation
- SOD/Catalase mRNA Upregulation
- 48–72 hours
- 5–7 days
- RT-PCR, qPCR
- Gene expression precedes protein. Useful early marker but doesn't confirm functional enzyme activity
- Intracellular Glutathione (GSH) Levels
- 3–4 weeks
- HPLC, spectrophotometric assay
- Functional marker of redox capacity. Correlates with cellular resilience to oxidative stress
- ROS Production (DCFDA Fluorescence)
- 10–14 days
- 6–8 weeks
- Flow cytometry, fluorescence microscopy
- Reflects cumulative antioxidant enzyme activity. Delayed due to enzyme synthesis lag
- Lipid Peroxidation (MDA, 4-HNE)
- 14–21 days
- 8–10 weeks
- TBARS assay, ELISA
- Downstream damage marker. Reduction confirms antioxidant enzymes are functionally protecting membranes
- Mitochondrial Membrane Potential
- 2–3 weeks
- JC-1 staining, TMRM fluorescence
- Stabilisation indicates reduced mitochondrial ROS leak. Precedes biogenesis
- Collagen Density and Crosslinking
- 12–16 weeks
- Histology (Masson's trichrome), hydroxyproline assay
- Tissue remodelling is the slowest endpoint. Protein synthesis, secretion, and ECM integration are rate-limiting