Chitetezo cha Microecology pa Khungu

Zotsatira Zoteteza zaChilengedwe Cha Khungupa Khungu

Ma glands a sebaceous amatulutsa mafuta, omwe amasinthidwa ndi tizilombo toyambitsa matenda kuti apange filimu ya mafuta yosungunuka. Mafilimu awa a lipid ali ndi mafuta aulere acid, omwe amadziwikanso kuti mafilimu a asidi, omwe amatha kuletsa zinthu zamchere zomwe zaipitsidwa pakhungu ndikuletsa mabakiteriya akunja (kufalitsa mabakiteriya). , bowa ndi tizilombo tina toyambitsa matenda timakula, kotero ntchito yoyamba ya zomera zabwinobwino pakhungu ndi chitetezo chofunikira.

Kulowa kwa khungu ndi ziwalo zina, kuphatikizapo ma glands a thukuta (ma glands a thukuta), ma glands a sebaceous, ndi ma follicle a tsitsi, kuli ndi zomera zawozawo. Ma glands a sebaceous amalumikiza ma follicle a tsitsi kuti apange follicular sebaceous unit, yomwe imatulutsa mafuta ambiri otchedwa sebum. Sebum ndi filimu yoteteza yomwe imateteza ndi kudzola khungu ndi tsitsi ndipo imagwira ntchito ngati chishango choletsa mabakiteriya. Ma glands a sebaceous ndi opanda poizoni, amathandizira kukula kwa mabakiteriya a anaerobic mongaMatenda a P. acne, yomwe ili ndi P. acnes lipase yomwe imawononga sebum, imawonjezera triglycerides mu sebum, ndikutulutsa ma free fatty acids. Mabakiteriya amatha kumamatira ku ma free fatty acids awa, omwe amathandiza kufotokoza momwe ma sebaceous glands amakhalira ndi P. acnes, ndipo ma free fatty acids awa amathandiziranso ku acidity pamwamba pa khungu (pH ya 5). Mabakiteriya ambiri ofala, monga Staphylococcus aureus ndi Streptococcus pyogenes, amaletsedwa m'malo okhala ndi acidity ndipo motero ndi abwino kukula kwa coagulase-negative staphylococci ndi coryneform bacteria. Komabe, kutsekeka kwa khungu kumabweretsa kuwonjezeka kwa pH komwe kudzathandiza kukula kwa S. aureus ndi S. pyogenes. Chifukwa anthu amapanga sebum triglycerides zambiri kuposa nyama zina, P. acnes ambiri amalowa pakhungu la anthu.