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-2 is used in research to induce robust GH pulses and study anabolic and metabolic effects; clinically developed as pralmorelin for GH deficiency diagnostics6272, SS-31 improves mitochondrial bioenergetics, reduces oxidative stress, and shows protective effects in models of ischemia-reperfusion, neurodegeneration, and other mitochondrial disorders4637137.
While GHRP-2 works as a second-generation hexapeptide growth hormone–releasing peptide that mimics ghrelin by agonizing GHSR-1a, strongly stimulating pulsatile GH release and modestly raising prolactin, ACTH, and cortisol62723096, SS-31 is a mitochondria-targeted tetrapeptide, d-Arg-dimethylTyr-Lys-Phe-NH2, that selectively binds cardiolipin in the inner mitochondrial membrane, stabilizing cristae structure, improving electron transport, and reducing ROS production4637137143.
GHRP-2
GHSR
SS-31
Not assigned in the current dataset.
GHRP-2 and SS-31 are noticeably different, with limited direct overlap in their usual biological context. Their typical research and application settings separate fairly clearly: GHRP-2 is more often discussed in the realm of Metabolic and endocrine and Musculoskeletal health, whereas SS-31 is more often associated with the realm of Aging and longevity and Cardiovascular health. They also influence different molecular systems, with GHRP-2 tracking more closely to Ghrelin receptor while SS-31 centers more on Mitochondrial membrane. Both are synthetic in origin with GHRP-2 in Clinical phase 1 and SS-31 in Clinical phase 2. Their sequence patterns also diverge, with GHRP-2 showing protein-mimetic sequence features and SS-31 showing cationic amphipathic features.
No related articles are linked to these peptides yet.