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 PEG-MGF is used experimentally to enhance muscle repair and hypertrophy after mechanical overload or injury by stimulating satellite-cell activation and protein synthesis6373138, 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 PEG-MGF works as a poly(ethylene glycol)-conjugated form of Mechano Growth Factor (IGF-1Ec splice variant) comprising the 24-aa C-terminal E-peptide of IGF-1, designed to extend half-life while activating IGF-1 receptor–mediated anabolic signaling in muscle satellite cells637322138, 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.
PEG-MGF
IGF1
PT-141
POMC
The clearest overlap between PEG-MGF and PT-141 is that both converge around Signaling modulator. Their typical research and application settings separate fairly clearly: PEG-MGF is more often discussed in the realm of Musculoskeletal health and Cardiovascular health, whereas PT-141 is more often associated with the realm of Reproductive health. Both appear to work through Signaling modulator, but the functional emphasis still separates, with PEG-MGF leaning toward Anabolic growth and Tissue repair and healing and PT-141 leaning toward . Both are synthetic in origin and their development context also differs, with PEG-MGF in Preclinical development while PT-141 is approved. PEG-MGF takes the form of a peptide conjugate, whereas PT-141 is closer to a cyclic peptide, while PEG-MGF carries pegylation features, while PT-141 instead reflects acetylation changes.
No related articles are linked to these peptides yet.