Saamaynta Ilaalinta ee Microecology Maqaarka ee Maqaarka

Saamaynta Ilaalinta eeMicroecology maqaarkamaqaarka saaran

qanjidhada sebaceous ayaa soo daaya lipids, kuwaas oo ay metabolized by microorganisms si ay u sameeyaan filim dufan leh emulsified. Filimadan dufanka leh waxay ka kooban yihiin asiidh dufan ah oo bilaash ah, oo sidoo kale loo yaqaan filimaanta aashitada, kuwaas oo ka takhalusi kara walxaha alkaline ee wasakhaysan maqaarka oo joojin kara bakteeriyada ajnabiga ah (bakteeriya gudbisa). , fungi iyo microorganisms kale oo pathogenic koraan, sidaas darteed shaqada ugu horeysa ee flora maqaarka caadiga ah waa saamayn muhiim ah oo ilaalinta.

Dulitaanka maqaarka iyo lifaaqyada, oo ay ku jiraan qanjidhada dhididka (qanjirrada dhididka), qanjidhada sebaceous, iyo follicle timaha, waxay leeyihiin ubax u gaar ah. Qanjidhada sebaceous waxay isku xiraan timaha follicle si ay u sameeyaan unugga sebaceous follicular, kaas oo soo daaya maaddo dufan qani ah oo loo yaqaan sebum. Sebum waa filim ka hortag ah hydrophobic kaas oo ilaaliya oo saliideeya maqaarka iyo timaha wuxuuna u dhaqmaa sidii gaashaan bakteeriyada. qanjidhada sebaceous waa kuwo aad u hypoxic ah, taageeraya koritaanka bakteeriyada anaerobic ee facultative sidaP. finanka, kaas oo ka kooban P. acnes lipase kaas oo hoos u dhiga sebum, hydrolyzes triglycerides ee sebum, oo sii daaya acids dufanka bilaashka ah. Bakteeriyadu waxay u hoggaansami kartaa asiidhyada dufanka leh ee bilaashka ah, kuwaas oo gacan ka geysanaya sharraxa gumeysiga qanjidhada sebaceous ee P. acnes, iyo asiidhyada dufanka bilaashka ah ayaa sidoo kale gacan ka geysta acidity ee maqaarka maqaarka (pH of 5). Bakteeriyaal badan oo caadi ah, sida Staphylococcus aureus iyo Streptococcus pyogenes, ayaa lagu xannibay jawi acidic ah sidaas awgeedna waxay u fiican tahay koritaanka bakteeriyada xinjirowga-negative staphylococci iyo bakteeriyada coryneform. Si kastaba ha ahaatee, xidhitaanka maqaarka ayaa keena kororka pH kaas oo door bidi doona koritaanka S. aureus iyo S. pyogenes. Sababtoo ah bini'aadamku waxay soo saaraan triglycerides sebum ka badan xayawaanka kale, in ka badan P. finan ayaa gumaysa maqaarka bini'aadamka.