Confronto
Afamelanotide vs. Goserelin
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
65807-02-5
Peso molecolare
1646.87 g/mol
1269.43 g/mol
Emivita
12 h
4.2 h
Sequenza
Ac-Ser-Tyr-Ser-Nle-Glu-His-D-Phe-Arg-Trp-Gly-Lys-Pro-Val-NH2pGlu-His-Trp-Ser-Tyr-D-Ser(tBu)-Leu-Arg-Pro-Azgly-NH2Meccanismo 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.
Goserelin
As a GnRH agonist, goserelin binds to the GnRH receptors of the pituitary gland. Initial stimulation transiently raises luteinizing hormone (LH) and follicle-stimulating hormone (FSH). With continuous receptor occupancy, however, the receptors become desensitized and down-regulated, which reduces LH and FSH secretion and consequently the production of testosterone or estrogen. This mechanistic relationship is documented in the pharmacological literature.
Base di evidenze
Evidenza più alta
RCT sull'uomo
RCT sull'uomo
Studi
4
4
di cui sull'uomo
4
4
Effetti registrati
4
3
Contraddizioni aperte
1
1
Eventi avversi documentati
4
2
Stato legale
Voci complete
Frequently asked questions
- What is the difference between Afamelanotide and Goserelin?
- Afamelanotide is classified as "Ricerca (altro)", while Goserelin 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. Goserelin: Goserelin is a synthetic decapeptide and an agonist of gonadotropin-releasing hormone (GnRH). The medical literature describes it as a hormonal agent that suppresses the release of sex hormones through sustained receptor stimulation. Regulatory-approved indications include prostate cancer, advanced breast cancer, endometriosis, and endometrial thinning, among others. This page contrasts both neutrally and source-based — with no usage or dosing recommendation.
- Which peptide is better supported by science, Afamelanotide or Goserelin?
- The highest available evidence level is "RCT sull'uomo" for Afamelanotide and "RCT sull'uomo" for Goserelin. 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 Goserelin in Germany and the United States?
- Germania: Afamelanotide — Su prescrizione, Goserelin — Su prescrizione. Stati Uniti: Afamelanotide — Su prescrizione, Goserelin — Su prescrizione. These are factual summaries with source and review date on the individual pages.