Video: Calcitriol cuam tshuam li cas hauv cov ntshav calcium?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
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.
Tsis tas li, puas yog calcitriol nce ntshav calcium ntau ntau?
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.
Ib yam li ntawd, calcitriol ua li cas rau calcium? Calcitriol nce ntshav ntau ntau calcium los ntawm kev nce qhov nqus ntawm calcium hauv ob lub raum, nce kev nqus ntawm calcium thiab phosphorus los ntawm txoj hnyuv, thiab nce kev tso tawm ntawm calcium thiab phosphorus los ntawm cov pob txha. Calcitriol pab lub cev siv calcium pom muaj nyob rau hauv cov khoom noj thiab tshuaj ntxiv.
Ntxiv mus, 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.
Dab tsi ua rau cov qib calcitriol siab?
A qib siab ntawm cov vitamin D 25-dihydroxy tuaj yeem tshwm sim thaum muaj parathryoid hormone ntau dhau lossis thaum muaj kab mob, xws li sarcoidosis lossis qee cov qog ntshav, uas tuaj yeem ua rau calcitriol sab nraum lub raum.
Pom zoo:
Cov qog twg hauv qab no ua rau cov qib calcium ntau ntxiv hauv cov ntshav?
Cov parathyroid hormone (PTH), zais los ntawm cov qog parathyroid, yog lub luag haujlwm tswj hwm qib calcium hauv ntshav; nws tau tso tawm thaum twg cov ntshav calcium qib qis. PTH nce cov ntshav calcium ntau ntau los ntawm kev txhawb nqa osteoclasts, uas ua rau cov pob txha tawg kom tso calcium rau hauv cov ntshav
Cov tshuaj calcium puas cuam tshuam rau calcium channel blockers?
Tsis muaj pov thawj tias cov tshuaj calcium hauv qhov ncauj cuam tshuam nrog calcium channel blockers. Txhawm rau kom muaj kev nyab xeeb, xyuas koj cov ntshav tsis tu ncua yog tias noj calcium channel blockers thiab calcium ntxiv tib lub sijhawm
Dab tsi yog x cuam tshuam hauv daim ntawv nqes hav cuam tshuam?
Peb tuaj yeem siv daim ntawv nqes hav-intercept (y = mx + b). Qhov kev cuam tshuam x yog pom los ntawm kev teeb tsa y = 0, vim qhov ntawd yuav ua rau peb x-tus nqi uas cov kab hla ntawm x-axis
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
Cov ntshav viscosity cuam tshuam li cas rau cov ntshav khiav?
Ua kom muaj viscosity nce qhov ua haujlwm ntawm cov ntshav khiav thiab yog li ua kom lub plawv ua haujlwm thiab ua rau lub cev tsis muaj zog. Ib yam li cov suab thaj, thaum ntshav tau txias, nws dhau los ua 'tuab' thiab ntws qeeb dua. Yog li ntawd, muaj kev cuam tshuam sib txawv ntawm qhov kub thiab viscosity