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Peptides for Depression Research: Mechanism Comparison
Understanding which peptide modulates which pathway is essential for experimental design. The table below compares four commonly researched peptides by their primary mechanism, receptor targets, evidence base, and typical research applications. Semax Amidate P
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- Understanding which peptide modulates which pathway is essential for experimental design. The table below compares four commonly researched peptides by their primary mechanism, receptor targets, evidence base, and typical research applications.
- Semax Amidate Peptide
- BDNF upregulation, neuroprotection
- Melanocortin receptors (MC4R), TrkB
- RCTs in mild-moderate depression; animal models show hippocampal neurogenesis
- Studying neuroplasticity, cognitive enhancement, stress resilience
- Selank Amidate Peptide
- Anxiolytic, HPA axis modulation
- GABA-A receptor (non-benzodiazepine site)
- RCTs in GAD; reduced cortisol awakening response
- Anxiety-depression comorbidity, stress-induced anhedonia
- Cerebrolysin
- Neurotrophic factor mimetic
- BDNF-like activity, NGF pathways
- Meta-analyses in post-stroke depression, vascular dementia
- Post-stroke mood disorders, vascular contributions to depression
- Dihexa
- Synaptogenesis, HGF/c-Met potentiation
- c-Met receptor, NMDA receptor modulation
- Preclinical models of cognitive impairment, anhedonia
- Cognitive symptoms in depression, motivation deficits
- Each peptide offers a different lens for examining depression. Semax is the go-to for neuroplasticity and BDNF studies. Selank excels in stress-response and anxiety models. Cerebrolysin is uniquely suited for vascular and post-injury depression contexts. Dihexa addresses the anhedonia and cognitive fog that SSRIs often miss. Selecting the right peptide depends on the hypothesis being tested. And that requires knowing the receptor biology and signaling cascades involved.