2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Proteoglycans. Proteoglycans (mucoproteins) yog tsim los ntawm cov glycosaminoglycans ( GAGs ) covalently txuas rau cov protein tseem ceeb. Lawv yog pom nyob rau hauv tag nrho cov ntaub so ntswg sib txuas, cov txheej txheem txuas ntxiv (ECM) thiab ntawm cov npoo ntawm ntau hom cell.
Raws li txoj cai, glycosaminoglycans tau tsim li cas?
Glycosaminoglycans Cov thiab proteoglycans lawv daim ntawv yog cov loj tsis zoo-them cov lwg me me uas nyiam cations thiab dej molecules, ua rau tsim ib nrab ntawm cov gel.
Qhov thib ob, qhov piv txwv ntawm glycosaminoglycan yog dab tsi? Lub zog ntawm lub cev ntawm proteoglycans yog lub luag haujlwm tshwj xeeb cov glycosaminoglycans tam sim no. Piv txwv ntawm ntau cov glycosaminoglycans yog chondroitin 6-sulfate, keratan sulfate, heparin, dermatan sulfate, thiab hyaluronate. Piv txwv ntawm proteoglycans suav nrog Versican, Brevican, Neurocan, thiab Aggrecan.
Yog li, glycosaminoglycans siv rau dab tsi?
Keratan Sulfate Hauv qhov xaus, cov glycosaminoglycans ( GAGs ), muaj cov haujlwm dav hauv lub cev. Lawv ua lub luag haujlwm tseem ceeb hauv cov txheej txheem ntawm tes, suav nrog kev tswj hwm ntawm kev loj hlob ntawm tes, kev nthuav dav, txhawb kev txhawb nqa ntawm tes, tiv thaiv kev txhaws, thiab kho qhov txhab.
Dab tsi yog glycosaminoglycans hauv daim tawv nqaij?
Glycosaminoglycans Cov ( GAGs ), tseem hu ua mucopolysaccharides, yog polysaccharides uas cuam tshuam nrog kev txhawb nqa thiab kev saib xyuas ntawm tawv nqaij cov txheej txheem protein xws li collagen thiab elastin. Lub peev xwm no tuaj yeem pab ua kom muaj dej noo rau lwm tus tawv nqaij Cheebtsam (piv txwv li, collagen thiab elastin).
Pom zoo:
Qhov chaw nyob ntawm thawj lub tsev kawm qib siab kho hniav nyob hauv ntiaj teb nyob qhov twg?
Dr. John M. Harris tau pib lub ntiaj teb thawj lub tsev kho hniav hauv Bainbridge, Ohio, thiab tau pab tsim kho hniav raws li kev noj qab haus huv. Nws qhib rau 21 Lub Ob Hlis 1828, thiab niaj hnub no yog tsev khaws puav pheej kho hniav. Thawj lub tsev kawm kho hniav, Baltimore College ntawm Kev Kho Hniav, tau qhib hauv Baltimore, Maryland, Asmeskas xyoo 1840
Thawj qhov muag pom qhov muag nyob qhov twg?
Occipital lub cev
Nyob qhov twg siab endothelial venules nyob qhov twg?
Hauv tib neeg, HEVs tau pom nyob hauv txhua qhov nruab nrab lymphoid (tshwj tsis yog tus po, qhov twg cov ntshav tawm los ntawm cov hlab ntsha qhib thiab nkag mus rau cov nqaij liab), suav nrog ntau pua ntawm cov qog ntshav uas tau tawg hauv lub cev, tonsils thiab adenoids hauv pharynx, Peyer thaj ua rau thaj (PIs) nyob rau hauv txoj hnyuv me, daim ntawv ntxiv, thiab me me
Lub qhov hluav taws xob nyob qhov twg nyob qhov twg?
Lub plab feem ntau yog nyob rau sab laug sab saud sab hauv qab lub diaphragm thiab txuas nrog zoo dua rau txoj hlab pas thiab nyob deb rau duodenum
Qhov kev tiv thaiv qhov txhab feem ntau pom nyob qhov twg?
Kev tiv thaiv qhov txhab feem ntau pom ntawm ob txhais tes thiab hauv pliaj, qhov chaw uas tus neeg raug tsim txom tau tsa lawv los tiv thaiv lub taub hau thiab lub ntsej muag lossis tiv thaiv kev ua phem, tab sis kuj tseem muaj nyob ntawm ko taw thiab ob txhais ceg uas tus neeg raug tsim txom sim tiv thaiv thaum pw thiab ncaws. tawm ntawm tus neeg ua phem