Ceramide yog ib hom amide tebchaw tsim los ntawm lub cev qhuav dej ntawm long-chain fatty acids thiab cov amino pawg ntawm sphingomyelin, feem ntau yog ceramide phosphorylcholine thiab ceramide phosphatidylethanolamine, phospholipids yog cov khoom tseem ceeb ntawm cov cell membranes, thiab 40% -50% ntawm sebum. Lub stratum corneum muaj cov ceramides, uas yog ib feem tseem ceeb ntawm cov inter-cellular matrix, thiab ua si Nws plays lub luag haujlwm tseem ceeb hauv kev tswj cov dej sib npaug ntawm stratum corneum. Ceramide muaj lub peev xwm los khi cov dej molecules, thiab nws tswj cov tawv nqaij noo los ntawm kev tsim cov qauv mesh hauv stratum corneum. Yog li, ceramides muaj peev xwm tswj tau cov tawv nqaij noo.
Ceramides (Cers) muaj nyob hauv txhua lub hlwb eukaryotic thiab ua lub luag haujlwm tseem ceeb hauv kev tswj hwm ntawm tes sib txawv, kev loj hlob, apoptosis, kev laus thiab lwm yam haujlwm hauv lub neej. Raws li lub ntsiab tseem ceeb ntawm intercellular lipids nyob rau hauv lub stratum corneum ntawm daim tawv nqaij, ceramide tsis tsuas yog ua raws li ib tug thib ob messenger molecule nyob rau hauv lub sphingomyelin txoj kev, tab sis kuj plays lub luag hauj lwm tseem ceeb nyob rau hauv cov txheej txheem ntawm epidermal stratum corneum tsim, uas muaj cov kev ua ntawm kev tswj. daim tawv nqaij barrier, moisturizing, anti-aging, whitening, thiab kho kab mob.
Nov yog qee cov ntsiab lus tseem ceeb ntawm ceramides:
Lub luag haujlwm ntawm tus qauv
Ceramides yog ib qho tseem ceeb ntawm cov lipid bilayers nyob rau hauv cell membranes, thiab lawv yog tshwj xeeb tshaj yog nplua nuj nyob rau hauv lub txheej txheej ntawm daim tawv nqaij. Nyob rau hauv stratum corneum, ceramides pab tsim ib qho kev tiv thaiv kev tiv thaiv uas tiv thaiv kom tsis txhob poob dej thiab tiv thaiv daim tawv nqaij los ntawm lwm yam irritants.
Daim tawv nqaij Barrier Function
Lub stratum corneum ua raws li qhov cuam tshuam rau sab nraud ib puag ncig, thiab muaj pes tsawg leeg ntawm ceramides hauv txheej no yog qhov tseem ceeb rau kev tswj cov tawv nqaij hydration thiab tiv thaiv kev nkag mus ntawm cov khoom tsis zoo. Kev tsis txaus ntawm ceramides tuaj yeem ua rau tawv nqaij qhuav thiab ua haujlwm tsis zoo.
Kev laus thiab tawv nqaij mob
Cov theem ntawm ceramides nyob rau hauv daim tawv nqaij yuav txo qis nrog lub hnub nyoog, thiab qhov kev poob no yog txuam nrog tej yam kev mob xws li tawv nqaij qhuav thiab wrinkles. Hauv qee qhov kev mob ntawm daim tawv nqaij, xws li eczema, psoriasis, thiab atopic dermatitis, tej zaum yuav muaj kev cuam tshuam ntawm cov tshuaj ceramide, uas ua rau cov kab mob ntawm cov kab mob no.
Kev siv tshuaj pleev ib ce thiab Dermatological
Muab lawv lub luag haujlwm hauv kev noj qab haus huv ntawm daim tawv nqaij, ceramides feem ntau suav nrog hauv cov khoom siv tawv nqaij. Kev siv tshuaj pleev xim ntawm ceramides tuaj yeem pab kho thiab tswj cov tawv nqaij barrier, uas muaj txiaj ntsig zoo rau cov tib neeg uas muaj tawv nqaij qhuav lossis tawv nqaij.
Hom Ceramides
Muaj ntau hom ceramides (tsim los ntawm cov lej xws li Ceramide 1, Ceramide 2, thiab lwm yam), thiab txhua hom muaj cov qauv sib txawv me ntsis. Cov hom ceramide sib txawv no yuav muaj cov haujlwm tshwj xeeb hauv daim tawv nqaij.
Cov chaw noj zaub mov
Thaum cov ceramides feem ntau tsim tawm hauv lub cev, qee qhov kev tshawb fawb qhia tias qee yam khoom noj khoom haus, xws li sphingolipids pom hauv qee yam khoom noj xws li qe, tuaj yeem ua rau cov qib ceramide.
Post lub sij hawm: Dec-12-2023
