Farar Kayan shafawa daLauniMetabolism
Melanin anabolism ya kasu kashi daban-daban lokaci. Masana kimiyya sun yi imanin cewa yana yiwuwa a yi nazarin abubuwan fata da kuma yin aiki don lokuta daban-daban na rayuwa.
(1) Matsayin farko na haɗin melanin
① Tsangwama tare da rubutun da / ko glycosylation na tyrosinase; ② Hana masu sarrafawa a cikin samuwar tyrosinase; ③ Gudanar da tyrosinase bayan rubuce-rubuce.
(2) Lokacin hada sinadarin Melanin
A matsayin maɓalli mai mahimmanci da ƙarancin ƙarancin enzyme don haɓakar melanin, masu hana tyrosinase sune babban bincike da jagorar ci gaba a halin yanzu. Tunda yawancin abubuwan da ake amfani da su na fararen fata irin su phenol da catechol abubuwan da suka samo asali sun kasance kama da tyrosine da dopa, abubuwan da aka bincikar fararen fata galibi ana rarraba su azaman masu hana gasa ko gasa na tyrosinase.
(3) Late mataki na melanin kira
① Yana hana canja wuri na melanosome; abubuwan da ke da tasirin hanawa na serine protease, irin su rwj-50353, gaba ɗaya kauce wa UBV-induced epidermal pigmentation; mai hana trypsin waken soya yana da tasirin fari a bayyane amma ba shi da wani tasiri a kan gubar sel pigment; Niacinamide, na iya hana yaduwar melanocytes tsakanin melanocytes da keratinocytes; ② Melanin watsawa da metabolism, α-hydroxy acid, free fatty acid da retinoic acid, ta da sabunta cell da inganta melaninized keratinocytes na kau.
Ya kamata a lura da cewa bincike da aikace-aikace na whitening abubuwa dangane da sama melanin metabolism ba su dace da rigakafi da kuma lura da tsofaffin plaques. Tunda tsarin samar da plaque na tsofaffi yana da alaƙa da samuwar lipofuscin, abubuwa masu aiki na antioxidative galibi ana amfani da su don jinkirtawa da juyar da plaques na tsofaffi.
Lokacin aikawa: Jul-29-2022