Video: Cov tshuaj lom neeg muaj pes tsawg leeg ntawm cov pob txha extracellular matrix yog dab tsi?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Extracellular matrix , uas yog ua los ntawm cov organic matrix (30%) muaj cov proteoglycans (tab sis tsawg dua pob txha mos), glycosaminoglycans, glycoproteins, osteonectin (thauj tog rau nkoj) pob txha mineral rau collagen) thiab osteocalcin (calcium khi cov protein). Muaj collagen fibers (feem ntau yog hom I (90%), nrog qee hom V).
Hauv qhov no, cov tshuaj lom neeg muaj pes tsawg leeg ntawm cov pob txha yog dab tsi?
Cov pob txha suav nrog cov xov tooj ntawm tes nyob hauv cov mineralized organic matrix. Cov lej no suav nrog cov khoom siv organic, feem ntau yog hom I collagen - "organic" hais txog cov khoom tsim los ntawm tib neeg lub cev - thiab cov khoom tsis muaj tshuaj, feem ntau yog hydroxyapatite thiab lwm yam ntsev ntawm calcium thiab phosphate.
Tsis tas li, dab tsi yog qhov loj tshaj tivthaiv ntawm cov lej sib txawv? Feem ntau tsiaj hlwb tso tawm cov ntaub ntawv mus rau qhov chaw seem sab nraud, tsim kom muaj qhov sib txuam sib txuas ntawm cov protein thiab carbohydrates hu ua extracellular matrix (ECM). Ib feem tseem ceeb ntawm cov txheej txheem sab nrauv yog cov protein collagen.
Ib yam nkaus, dab tsi yog cov ntaub so ntswg sib txuas thiab cov txheej txheem sab nrauv uas tsim los ntawm?
Cov txheej txheem sab nrauv ntawm cov ntaub so ntswg sib txuas yog tsim los ntawm cov khoom hauv av thiab fibers . Hauv cov ntaub so ntswg sib txuas zoo tib yam, cov khoom hauv av feem ntau yog dej. Tus thawj xibfwb fiber ntau hom yog collagen (cov protein ntau tshaj plaws hauv lub cev), nrog ywj fibers raws li ib qho me me.
Dab tsi yog extracellular matrix hauv lub cev?
Hauv biology, cov extracellular matrix (ECM) yog lub network peb-seem ntawm extracellular macromolecules, xws li collagen, enzymes, thiab glycoproteins, uas muab kev txhawb nqa cov txheej txheem thiab biochemical rau cov cell ib puag ncig.
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