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 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, Snap-8 is a cosmetic peptide studied for reducing wrinkle depth by inhibiting synaptic vesicle fusion and subsequent muscle contraction in facial expression muscles5060.
While PT-141 works as 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, Snap-8 is acetyl octapeptide-3 (Ac-Glu-Glu-Met-Gln-Arg-Arg-Ala-Asp-NH2), an extended analog of Argireline derived from the N-terminal region of SNAP-25 that competes with native SNAP-25 for binding to syntaxin-1, forming a non-functional SNARE complex and reducing neurotransmitter release5060.
PT-141
POMC
Snap-8
Not assigned in the current dataset.
Both peptides fall into a similar broad context as Neuropeptides, although the details of how they are used and discussed still diverge. Their typical research and application settings separate fairly clearly: PT-141 is more often discussed in the realm of Reproductive health, whereas Snap-8 is more often associated with the realm of Dermatology and aesthetics. Both appear to work through Neurotransmitter modulator, but the functional emphasis still separates, with PT-141 leaning toward and Snap-8 leaning toward Muscle relaxation. PT-141 has a more synthetic analog origin, while Snap-8 is closer to synthetic design background and their development context also differs, with PT-141 approved while Snap-8 is cosmetic grade. PT-141 takes the form of a cyclic peptide, whereas Snap-8 is closer to a linear peptide.
No related articles are linked to these peptides yet.