Acetyl tetrapeptide-5
is used in cosmetic eye formulations to decrease puffiness, eye bags, and dark circles by reducing edema and protecting proteins such as SOD from glycation
Alanine
Ala / A · hydrophobic residue · neutral charge
AOD-9604
is studied as an anti-obesity peptide that can reduce weight gain and increase fat oxidation in obese animal models with generally neutral effects on IGF-1 and glucose metabolism in early human trials
Arginine
Arg / R · basic residue · positive charge
Argireline
is a topical cosmetic peptide reported to decrease dynamic wrinkles by partially mimicking the mechanism of botulinum toxin in a non-invasive manner
Asparagine
Asn / N · polar residue · neutral charge
Aspartic acid
Asp / D · acidic residue · negative charge
BPC-157
is investigated for accelerating healing of gastrointestinal mucosa, tendons, ligaments, bone, and nervous tissue in preclinical models, with anti-inflammatory and pro-angiogenic effects
Comparison
While GHRP-6 is used experimentally to produce strong GH surges and hyperphagia, allowing investigation of GH-dependent anabolism and energy-balance regulation2030, LL-37 acts as a broad-spectrum antimicrobial and immunomodulatory peptide involved in host defense and wound repair, but can also promote inflammation and cancer cell proliferation in some contexts5215.
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, LL-37 is a cationic amphipathic 37-amino-acid cathelicidin peptide generated from hCAP18 that disrupts microbial membranes and modulates innate immunity, including chemotaxis, cytokine induction, and NET formation521586.
GHRP-6
GHSR
LL-37
CAMP
GHRP-6 and LL-37 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 LL-37 is more often associated with the realm of Immunology and inflammation and Gastroenterology. They also influence different molecular systems, with GHRP-6 tracking more closely to Ghrelin receptor while LL-37 centers more on GPCR receptor. GHRP-6 has a more synthetic design origin, while LL-37 is closer to natural endogenous background and both are still best understood as being in Preclinical development. GHRP-6 incorporates d-amino acid substitution and amidation features that are not part of LL-37, while their sequence patterns also diverge, with GHRP-6 showing protein-mimetic sequence features and LL-37 showing cationic amphipathic and alpha-helical domain features.
No related articles are linked to these peptides yet.