Habka caddeynta ee arbutin
Nuxurka iyo qaybintamelanin waa qodobbada ugu muhiimsan ee go'aamiya qoto dheer ee midabka maqaarka. Melanin waxaa lagu soo saaraa melanocytes ee lakabka hoose ee epidermis maqaarka. Ugu dambeyntii waxay ka sameysan tahay tyrosine oo hoos timaada ficilka tyrosinase iyada oo loo marayo taxane falcelin biochemical ah oo adag. Waxaa laga soo wareejiyaa lakabka basal ilaa lakabka sare ee epidermis ee gudaha gudaha iyada oo loo marayo synapses. Midab maqaarka.
Tyrosinase waxay leedahay firfircoonida tyrosine hydroxylase (catalyzing tyrosine si ay u soo saarto dopa) iyo dhaqdhaqaaqa dopa oxidase (catalyzing dopa si loo soo saaro dopaquinone). Inta lagu jiro habka sameynta melanin, waxay u adeegtaa sida enzyme ugu weyn ee xaddidaya. Dhaqdhaqaaqeeda ayaa go'aamiya qadarka melanin ee la sameeyay.
Arbuutin waa tyrosinase inhibitor kaas oo si wax ku ool ah u joojin kara dhaqdhaqaaqa tyrosinase iyada oo aan saameyn ku yeelan xoojinta unugyada unugyada. Waxay u tartamaysaa ku-xidhka dopa iyada oo si toos ah ugu xidhaysa tyrosinase. Goobta, waxay xannibaysaa isku-dhafka dopa iyo dopaquinone, taas oo faragelinaysa melanocytes waxayna joojinaysaa soo saarista melanin. Isla mar ahaantaana, waxa ay sidoo kale leedahay shaqada ah in la milo melanin la sameeyay, dedejinta qudhunka iyo soo saarida melanin, yaraynta midabka maqaarka, iyo ka saarida dhibco iyo freckles.
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Irene@xahealthway.com
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Waqtiga boostada: Febraayo-23-2024
