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Fua Fa'atatau
Fa'amatalaga Saogalemu
lautele
Fa'aaogāga
Retinoic acid (tretinoin) o se vaitamini A maua mai.Ua fa'aalia ai le malosi e sui ai le fa'aogaina o le collagen, fa'ateleina le maualuga o le acid hyaluronic dermal, ma fa'aosofia ai le tuputupu a'e o le fibroblast ma le matrix extracellular.E fa'aaogaina mo fa'afitauli o le keratinization ma mo le togafitia o siama.
Vitamini A, faʻatasi ai ma le faʻasologa mole C20H28O2, o se mea e maua ai le gasegase o le vaitamini A i totonu o le tino, e masani ona aʻafia ai le tuputupu aʻe o ponaivi ma faʻalauteleina aʻafiaga o le epithelial cell proliferation, eseesega ma le keratinolysis.E faʻaaogaina mo togafitiga o siama vulgaris, psoriasis, ichthyosis, lichen planus, furunculosis mumu lauulu, follicular keratosis, squamous cell carcinoma ma le melanoma.
Vaega: Fa'aletonu le fa'ama'iina o le pa'u, vaila'au e fa'aoso ai le eseesega
Tulaga e teu ai: moli-malamalama ma faʻamaufaʻailoga
Retinoic acid e leai sona aafiaga i le gaioiga tyrosinase ma le tuufaatasiga o melanin o melanocytes masani o tagata.Pe a oʻo i le matua o le tino o le paʻu pe faʻaleagaina e vailaʻau, faʻamaʻi UV poʻo le manua, faʻasaʻo pe taofia le faʻalavelave faʻalavelave i le biochemical composition ma le morphological structure o le dermal connective tissue e mafua mai i mea leaga.Retinoic acid e leai sona a'afiaga i le fa'apipi'iina masani ole pa'u.E le gata i lea, o le retinoic acid o loʻo i ai se gaioiga faʻalavelave i le leukocyte chemotaxis, o lea e galue ai o se sui faʻamaʻi.Retinoic acid e leai sona aafiaga tuusao i le sebaceous glands ma a latou mea lilo.