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.
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.
Теоретическая кривая концентрации при периоде полувыведения 12 h. Чисто фармакокинетическая модель — не рекомендация по дозировке.
Open in PK tool →Scenesse is the first FDA-approved therapy to increase pain-free light exposure in adults with a history of phototoxic reactions from erythropoietic protoporphyria.
Пептиды поставляются в виде сухого порошка. После растворения в жидкости (восстановление) этот калькулятор отвечает на единственный вопрос: сколько вещества содержится в одном миллилитре раствора после этого?
Только наука, без продаж. Отписаться можно в любой момент.
We store your email only for the newsletter. Unsubscribe anytime. Privacy