Video: Dab tsi yog cov txheej txheem txheej txheem ntawm cov pob txha ua los ntawm?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Extracellular matrix , 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).
Yog li ntawd, 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.
Ib tus kuj tseem yuav nug tau, lub luag haujlwm ntawm cov txheej txheem sab nrauv yog dab tsi? Cov extracellular matrix pab cov cell kom sib koom ua ke thiab tswj hwm tus xov tooj ntawm tes kev ua haujlwm , xws li adhesion, migration, proliferation, thiab differentiation. Nws yog tsim los ntawm macromolecules, hauv zos zais los ntawm cov neeg nyob hauv hlwb.
Ib yam li ntawd, koj tuaj yeem nug, hom fiber ntau lossis cov zaub mov zoo li cas hauv cov pob txha pob txha ntxiv?
Collagen fiber zoo li cov xis mas, lossis lub hauv paus txhawm rau ua tej yam ua ke. Cov ntsev uas muaj calcium yog qhov tseem ceeb tshaj plaws cov zaub mov rau pob txha , kwv yees li ntawm 70% ntawm matrix , suav nrog feem ntau cov calcium phosphate (hydroxyapatite, Ca5 (PO4) 3 (OH)) thiab qee qhov nyiaj ntawm calcium carbonate thiab lwm yam calcium lossis phosphate ntsev.
Dab tsi yog extracellular matrix proteins?
Collagens yog qhov loj Cov protein ntawm Extracellular Matrix . Cov collagens yog tsev neeg muaj fibrous cov protein pom nyob hauv txhua tus tsiaj txhu ntau hom. Lawv tau zais los ntawm cov ntaub so ntswg sib txuas, nrog rau ntau yam ntawm lwm hom cell.
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