Confronto
Afamelanotide vs. Carbetocin
Due peptidi a confronto — identità, base di evidenze, stato legale ed eventi avversi noti.
Identità
Categoria
Ricerca (altro)
Ricerca (altro)
N. CAS
75921-69-6
37025-55-1
Peso molecolare
1646.87 g/mol
nessun dato
Emivita
12 h
0.67 h
Sequenza
Ac-Ser-Tyr-Ser-Nle-Glu-His-D-Phe-Arg-Trp-Gly-Lys-Pro-Val-NH2nessun dato
Meccanismo d'azione
Afamelanotide
Afamelanotide is a synthetic analogue of α-melanocyte-stimulating hormone. It differs from native α-MSH by two substitutions — norleucine at position 4 and D-phenylalanine at position 7 — which make it metabolically more stable and more potent. As an agonist at the melanocortin-1 receptor (MC1R) on melanocytes, it activates adenylate cyclase, raises cAMP and increases tyrosinase activity via the transcription factor MITF. This shifts pigment synthesis toward eumelanin, which absorbs UV and visible light and has antioxidant properties — the presumed mechanism of photoprotection in EPP.
Carbetocin
Carbetocin is an oxytocin receptor agonist with prolonged duration. It triggers a sustained contraction of the uterus after birth, preventing atonic hemorrhage — unlike oxytocin, without a multi-hour infusion.
Base di evidenze
Evidenza più alta
RCT sull'uomo
RCT sull'uomo
Studi
4
1
di cui sull'uomo
4
1
Effetti registrati
4
2
Contraddizioni aperte
1
0
Eventi avversi documentati
4
1
Stato legale
Voci complete
Frequently asked questions
- What is the difference between Afamelanotide and Carbetocin?
- Afamelanotide is classified as "Ricerca (altro)", while Carbetocin is classified as "Ricerca (altro)". Afamelanotide: Afamelanotide (brand name Scenesse) is a synthetic 13-amino-acid analogue of α-melanocyte-stimulating hormone (α-MSH) and a melanocortin-1 receptor agonist. Unlike most peptides covered here, it is a regularly approved medicine: EMA approval in 2014/2015, FDA approval in 2019, in each case as a subcutaneous implant for the prevention of phototoxicity in adults with erythropoietic protoporphyria (EPP). It promotes eumelanin formation in the skin. Carbetocin: Carbetocin is a long-acting synthetic oxytocin analog (half-life ~40 minutes). It prevents postpartum hemorrhage as a single injection. Approved in Canada and the UK among others, NOT in the US. This page contrasts both neutrally and source-based — with no usage or dosing recommendation.
- Which peptide is better supported by science, Afamelanotide or Carbetocin?
- The highest available evidence level is "RCT sull'uomo" for Afamelanotide and "RCT sull'uomo" for Carbetocin. A higher evidence level means more robust data, but says nothing about suitability for an individual. The full body of evidence is on each peptide's own page.
- What is the legal status of Afamelanotide and Carbetocin in Germany and the United States?
- Germania: Afamelanotide — Su prescrizione, Carbetocin — Su prescrizione. Stati Uniti: Afamelanotide — Su prescrizione, Carbetocin — Non approvato. These are factual summaries with source and review date on the individual pages.