Video: Puas yog calcitriol nce ntshav calcium?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Calcitriol nce cov ntshav calcium (CaJ2+) feem ntau yog los ntawm nce ntxiv kev uptake calcium los ntawm cov hnyuv. Calcitriol tau pom zoo rau kev siv kho mob hauv Tebchaws Meskas xyoo 1978. Nws muaj raws li cov tshuaj siv dav.
Xav txog qhov no, calcitriol puas nce qib calcium hauv cov ntshav?
Parathyroid hormone stimulates calcitriol ntau lawm hauv lub raum los ntawm nce ntxiv Cov synthesis ntawm 1-α hydroxylase. Calcitriol muaj ntau txoj haujlwm tseem ceeb hauv lub cev. Nws tuav qib calcium hauv cov ntshav los ntawm nce calcium nqus nyob rau hauv txoj hnyuv.
Tsis tas li ntawd, calcitriol puas txo cov calcium hauv cov ntshav? PTH ua rau kev tsim ntawm calcitriol , ib daim ntawv nquag ntawm vitamin D, uas ua rau cov hnyuv kom nce kev nqus ntawm kev noj haus calcium . Calcitonin txo cov ntshav calcium ntau ntau los ntawm inhibiting osteoclasts, stimulating osteoblasts, thiab stimulating calcium tso tawm los ntawm ob lub raum.
Kuj nug, calcitriol cuam tshuam li cas rau cov ntshav calcium?
Calcitriol ua rau cov hlwb hauv plab hnyuv nce tsim tawm ntawm calcium thauj cov protein, hu ua calbindin-D cov protein, uas ua rau nce uptake ntawm calcium los ntawm lub cev mus rau lub cev. Nws muaj ib tug menyuam yaus nyhuv nyob rau hauv lub raum, txo urinary poob ntawm calcium los ntawm stimulating reabsorption.
calcitriol hormone ua dab tsi?
Bioactive vitamin D los yog calcitriol yog ib qho tshuaj steroid uas tau paub ntev txog nws lub luag haujlwm tseem ceeb hauv kev tswj hwm lub cev qib ntawm calcium thiab phosphorus, thiab mineralization ntawm pob txha.
Pom zoo:
Yuav ua li cas cov ntshav calcium nce?
Cov ntshav calcium qib tau tswj hwm los ntawm parathyroid hormone (PTH), uas yog tsim los ntawm cov qog parathyroid, raws li qhia hauv daim duab 1. PTH raug tso tawm hauv kev teb rau cov ntshav qis Ca2+ qib. PTH nce Ca2+ qib los ntawm kev tsom mus rau lub pob txha, lub raum, thiab txoj hnyuv
Calcitriol cuam tshuam li cas hauv cov ntshav calcium?
Calcitriol ua rau cov hlwb hauv plab hnyuv kom nce cov calcium thauj cov proteins, hu ua calbindin-D proteins, uas ua rau muaj kev nce ntxiv ntawm calcium los ntawm plab mus rau hauv lub cev. Nws muaj qhov cuam tshuam me me rau lub raum, txo qis tso zis ntawm calcium los ntawm stimulating reabsorption
Cov kua ntshav ntshav yog dab tsi tom qab cov qe ntshav thiab cov ntshav khov tau raug tshem tawm?
Cov ntshav yog cov kua ntshav tom qab cov qe ntshav thiab cov protein sib xyaw tau raug tshem tawm. cov pa roj ntshav suav nrog oxygen, carbon dioxide, thiab nitrogen
Puas yog ntshav siab nce nrog ntshav poob?
Feem ntau, cov ntshav poob qis dua 15% ntawm tag nrho cov ntshav ntim ua rau tsuas yog nce me me ntawm lub plawv dhia thiab tsis muaj kev hloov pauv loj hauv cov hlab ntsha. Thaum cov ntshav poob yog 15 txog 40%, txhais tau hais tias cov hlab ntsha thiab lub plawv dhia poob qis, thiab lub plawv dhia nce ntxiv, nrog qhov ntau ntawm cov kev hloov pauv cuam tshuam nrog ntshav poob ntau npaum li cas
Yuav ua li cas calcitriol nce calcium nqus?
Calcitriol ua rau cov hlwb hauv plab hnyuv kom nce cov calcium thauj cov proteins, hu ua calbindin-D proteins, uas ua rau muaj kev nce ntxiv ntawm calcium los ntawm plab mus rau hauv lub cev. Qhov no tsuas yog cov txheej txheem uas lub cev tuaj yeem nce nws cov khw muag calcium