Ceramide hmoov

Dab tsi yog ceramides

Cias muab, ceramides yog lipids (rog) uas pom muaj nyob rau hauv siab concentrations nyob rau hauv lub Uppermost txheej ntawm daim tawv nqaij. Lawv tsim ntau dua 50 feem pua ​​​​ntawm cov tawv nqaij muaj pes tsawg leeg, yog li nws tsis xav tsis thoob lawv ua lub luag haujlwm tseem ceeb hauv kev txiav txim siab seb koj cov tawv nqaij zoo li cas (thiab nws teb li cas rau ib puag ncig kev hem thawj).

Ceramides ua dab tsi

Xav txog ceramides li cov tshuaj khib ntawm cib-yog tias cov cib yog koj cov tawv nqaij. Ceramides pab tuav cov tawv nqaij ua ke los ntawm kev tsim cov txheej txheem tiv thaiv uas txwv tsis pub ya raws thiab tiv thaiv kev pom kev puas tsuaj los ntawm cov pa phem thiab lwm yam kev ntxhov siab. Tsis tas li ntawd, ceramides-txawm tias ntau dua li retinol, niacinamide, thiab peptides-yog ib qho ntawm cov tshuaj tiv thaiv kev laus "powerhouses" lub luag hauj lwm rau kev txhawb nqa ntawm daim tawv nqaij dynamic xwm. Ob qho tshwj xeeb ceramide precursors-phytosphingosine thiab sphingolipids-ua tau pab cov tawv nqaij ua ntau ceramides.

Kev ua haujlwm ntawm Ceramide

Ceramide yog ib chav kawm ntawm phospholipids nrog ceramide raws li lub cev pob txha, feem ntau suav nrog ceramide phosphorylcholine thiab ceramide phosphoethanolamine. Phospholipids yog cov khoom tseem ceeb ntawm cov cell membranes. 40 feem pua ​​​​rau 50 feem pua ​​​​ntawm sebum nyob rau hauv stratum corneum yog tsim los ntawm ceramides.

Kev siv Ceramide

Nws yog ib feem tseem ceeb ntawm intercellular matrix thiab plays lub luag haujlwm tseem ceeb hauv kev tswj cov dej noo ntawm stratum corneum. Ceramides muaj lub peev xwm muaj zog los koom nrog cov dej molecules thiab tswj cov tawv nqaij noo los ntawm kev tsim cov qauv hauv lub stratum corneum. Yog li ntawd, ceramides muaj cov nyhuv ntawm kev tswj cov tawv nqaij noo.