Cov nyhuv tiv thaivDaim tawv nqaij microcologyNtawm daim tawv nqaij
Lub qog sebaceous secreting lipids, uas yog metabolized los ntawm cov kab mob metabolized los ntawm cov kab mob me me los tsim zaj duab xis emulsified lipid zaj duab xis. Cov duab no muaj cov filty acids muaj cov makal acid dawb, uas tuaj yeem tso tawm alkaline cov tshuaj tsis huv ntawm daim tawv nqaij thiab inhibit txawv kis kab mob (hla cov kab mob). , Fungi thiab lwm cov kab mob pathogenic microorganisms loj hlob, yog li thawj qhov haujlwm ntawm cov tawv nqaij ib txwm muaj yog qhov tseem ceeb tiv thaiv.
Invagination ntawm daim tawv nqaij thiab txuas ntxiv, suav nrog cov qog ua kua (hws cov qog, thiab cov hauv paus plaub hau, muaj lawv tus kheej cov cim muaj. Cov qog sebaceous txuas cov hauv paus plaub hau los ua cov follicular sebooct unit, uas zais ib qho kev nco qab lipid cov nplua nuj litum. Sebum yog Hydrophobic tiv zaj yeeb yaj kiab uas tiv thaiv thiab lubricates rau ntawm daim tawv nqaij thiab plaub hau thiab ua yeeb ncuab tua pov tseg. Lub qog sebaceous yog cov kuj siv hypebhot, txhawb kev loj hlob ntawm tus kws qhia ntawv ntawm kws tshaj lijP. ACCO, uas muaj p. acces lipase uas degrades seb, hydrolyzes triglycerides hauv sebum, thiab tso cov rog roj. Cov kab mob tuaj yeem ua raws li cov kab mob rog no, uas pab tau piav txog kev ua kom cov qog sebaceous los ntawm P. Acnes, thiab cov roj ua kom acidity ntawm daim tawv nqaij (pH ntawm 5). Muaj ntau cov kab mob pathogenic, xws li staphylococcus pyogenes, yog incray rau kev loj hlob ntawm coagulase-tsis zoo staphyococci thiab cyletormocci thiab cyletormoci. Txawm li cas los xij, occlusion ntawm cov nqaij daim tawv nqaij ua rau nce ntxiv hauv pH uas yuav nyiam kev loj hlob ntawm S. Actus thiab S. Pyogenes. Vim tias tib neeg ua tau ntau sebum triglycerides dua li lwm cov tsiaj, ntau p. txuag tib neeg tawv nqaij.
Lub Sijhawm Post: Jun-27-2022
