Peptable

Comparison

GHRP-6 vs Selank

Also see:

GHRP-6Selank

Function

While GHRP-6 is used experimentally to produce strong GH surges and hyperphagia, allowing investigation of GH-dependent anabolism and energy-balance regulation2030, Selank is a peptide developed in Russia as an anxiolytic and nootropic; in animal models it reduces anxiety-like behavior and modulates immune parameters under stress39.

Mechanism

While GHRP-6 works as a first-generation synthetic hexapeptide ghrelin mimetic that potently stimulates GH release and markedly increases appetite via GHSR-1a activation in hypothalamus and pituitary203096, Selank is a synthetic heptapeptide, Thr-Lys-Pro-Arg-Pro-Gly-Pro, that combines a tuftsin fragment with a Pro-Gly-Pro motif and is reported to modulate GABAergic neurotransmission and cytokine balance while being resistant to proteolytic degradation39.

Receptor

GHRP-6

Ghrelin/growth hormone secretagogue receptor (GHSR-1a) 203096104

Selank

Not clearly established in the current dataset.

Organism or Origin

GHRP-6

Synthetic peptide analog of met-enkephalin30

Selank

Synthetic analog of the IgG-derived tetrapeptide tuftsin39

Gene

GHRP-6

GHSR

Selank

Not assigned in the current dataset.

Summary

GHRP-6 and Selank are noticeably different, with limited direct overlap in their usual biological context. Their typical research and application settings separate fairly clearly: GHRP-6 is more often discussed in the realm of Metabolic and endocrine and Musculoskeletal health, whereas Selank is more often associated with the realm of Neurology and brain health and Immunology and inflammation. They also influence different molecular systems, with GHRP-6 tracking more closely to Ghrelin receptor while Selank centers more on GPCR receptor. GHRP-6 has a more synthetic design origin, while Selank is closer to synthetic analog background with GHRP-6 in Preclinical development and Selank approved for Research use only. GHRP-6 incorporates d-amino acid substitution and amidation features that are not part of Selank, while their sequence patterns also diverge, with GHRP-6 showing protein-mimetic sequence features and Selank showing proline-rich features.

Related articles

No related articles are linked to these peptides yet.

Sources

20GHRP-6: The Original GHRP Research Overview - Peptidings, https://peptidings.com/peptides/ghrp-6/
30GHRP-6 - Wikipedia, https://en.wikipedia.org/wiki/GHRP-6
96Growth Hormone Secretagogue Receptor - ScienceDirect.com, https://www.sciencedirect.com/topics/biochemistry-genetics-and-molecular-biology/growth-hormone-secretagogue-receptor
39Application of thr-lys-pro-arg-pro-gly-pro peptide (selank) for ..., https://patents.google.com/patent/RU2629832C1/en