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 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 trials71111115, PT-141 is FDA-approved for treatment of hypoactive sexual desire disorder in premenopausal women and is studied for sexual dysfunction in other populations, increasing sexual desire via CNS melanocortin pathways42101.
While AOD-9604 works as a synthetic fragment of human growth hormone corresponding to residues 176–191 with an added N-terminal tyrosine, retaining lipolytic but not growth-promoting actions; proposed to stimulate lipolysis and inhibit lipogenesis in adipose tissue, partly via β3-adrenergic pathways without significantly activating the full GH receptor–IGF-1 axis6171111, PT-141 is the synthetic melanocortin receptor agonist bremelanotide, an analog of α-MSH that activates central MC3R and MC4R to modulate neuronal circuits governing sexual desire and arousal3242101.
AOD-9604
GH1
PT-141
POMC
AOD-9604 and PT-141 are noticeably different, with limited direct overlap in their usual biological context. Their typical research and application settings separate fairly clearly: AOD-9604 is more often discussed in the realm of Metabolic and endocrine, whereas PT-141 is more often associated with the realm of Reproductive health. Their biological logic is quite different: AOD-9604 is a hormone analog, whereas PT-141 is a neurotransmitter modulator and a signaling modulator. Both are synthetic in origin and their development context also differs, with AOD-9604 in Preclinical development while PT-141 is approved. AOD-9604 takes the form of a linear peptide, whereas PT-141 is closer to a cyclic peptide, PT-141 incorporates acetylation features that are not part of AOD-9604; while their sequence patterns also diverge, with AOD-9604 showing hydrophobic domain features and PT-141 showing protein-mimetic sequence features.
No related articles are linked to these peptides yet.