Umphumela Wokuvikela weI-Microecology Yesikhumbaesikhumbeni
Izindlala ze-sebaceous zikhipha ama-lipid, aguqulwa yizinto ezincane ukuze zakhe ifilimu yamafutha ehlanganisiwe. Lawa ma-lipid aqukethe ama-fatty acid amahhala, aziwa nangokuthi ama-acid film, angaqeda izinto ze-alkaline ezingcoliswe esikhumbeni futhi avimbele amabhaktheriya angaphandle (adlula amabhaktheriya). , isikhunta nezinye izinto ezincane ezibangela izifo ziyakhula, ngakho-ke umsebenzi wokuqala wezitshalo zesikhumba ezivamile uwumphumela obalulekile wokuvikela.
Ukungena kwesikhumba kanye nezitho zomzimba, okuhlanganisa nezindlala zokujuluka (izindlala zokujuluka), izindlala ze-sebaceous, kanye nezimbotshana zezinwele, kunezitshalo zazo ezihlukile. Izindlala ze-sebaceous zixhuma izimbotshana zezinwele ukuze zakhe iyunithi ye-follicular sebaceous, ekhipha into ecebile yamafutha ebizwa ngokuthi i-sebum. I-Sebum iyifilimu evikelayo evikela futhi igcobe isikhumba nezinwele futhi isebenza njengesivikelo sokulwa namagciwane. Izindlala ze-sebaceous azinawo umoya-mpilo, zisekela ukukhula kwamagciwane angenawo umoya-mpilo afana ne-Ama-P. acne, equkethe i-P. acnes lipase ebhubhisa i-sebum, i-hydrolyze triglycerides ku-sebum, futhi ikhiphe ama-fatty acid amahhala. Ama-bacteria anganamathela kula ma-fatty acid amahhala, asiza ukuchaza ukwakheka kwama-sebaceous glands yi-P. acnes, futhi lawa ma-fatty acid amahhala nawo anegalelo ku-acidity ebusweni besikhumba (pH ka-5). Ama-bacteria amaningi avamile abangela izifo, njenge-Staphylococcus aureus ne-Streptococcus pyogenes, avinjelwa endaweni ene-acidic futhi ngaleyo ndlela alungele ukukhula kwe-coagulase-negative staphylococci kanye ne-coryneform bacteria. Kodwa-ke, ukuvaleka kwesikhumba kuphumela ekwandeni kwe-pH okuzokhuthaza ukukhula kwe-S. aureus ne-S. pyogenes. Ngenxa yokuthi abantu bakhiqiza ama-sebum triglycerides amaningi kunezinye izilwane, ama-P. acnes amaningi ahlala esikhumbeni somuntu.
Isikhathi sokuthunyelwe: Juni-27-2022
