Triiodothyroxine los yog T3 yog ib yam tshuaj uas ua los ntawm cov thyroid caj pas raws li tetraiodothyroxine (T4), vim yog nws qhov kev sib tawg. Nws yog tsim nyob rau hauv ib lub me me, tsuas yog 10%, tab sis nws yog lub ntsiab biologically active substance ntawm endocrine yam.
Feem ntau txhawm rau ntsuas cov haujlwm ntawm cov thyroid caj pas nws yog ib qhov tsim nyog los txiav txim siab dawb T3 - hom tshuaj hormone yog nws li cas thiab nws yog dab tsi, nws paub ob peb. Txawm li cas los xij, daim ntawv no ntawm triiodothyroxine yog qhov tseem ceeb ntawm kev siv cov tshuaj metabolism hauv lub cev.
Tus thyroid hormone T3 yog dab tsi?
Lub phom sij ntawm cov khoom hauv kev saib xyuas yog tetraiodothyroxine, uas muaj 4 iodine molecules. T4 yog cov tshuaj hormone tsawg tsawg, nws yog tsim los ntawm cov thyroid caj pas hauv ntau qhov loj (li 90%).
Tom qab sib cais ntawm ib qho iodine molecule los ntawm tetraiodothyroxine, T3 yog tsim. Qhov tshuaj hormone no yog 10 lub sij hawm ntau tshaj li T4, nws yog lub luag haujlwm rau cov txheej txheem ntawm kev faib hluav taws xob, kev ua haujlwm ntawm lub cev, nrog rau kev ua haujlwm ntawm lub hlwb. Qhov tseeb, triiodothyroxine yog lub ntsiab stimulant ntawm tag nrho cov txheej txheem tseem ceeb hauv lub cev.
Thaum T3 nkag mus rau hauv cov hlab ntsha, nws ua rau cov nqaijrog. Lawv ua tau ib txoj haujlwm tseem ceeb, xa cov khoom hnyav rau cov kabmob thiab cov ntaub so ntswg, qhov twg yog qhov muaj mob ceev heev. Cov ciaj ciam triodothyroxine hauv kev soj ntsuam hu ua generic.
Ib qho me me ntawm cov tshuaj hormone nyob rau hauv cov ntshav cov pob txha unbound, nws yog qhov T3 dawb no. Nws qhov kev xav tau yog qhov txiav txim siab hauv qhov kev tshawb nrhiav ntawm cov thyroid kev ua haujlwm, vim triiodothyroxine unbound yog feem ntau dhia thiab ua rau cov kev mob tshwm sim saum toj no.
Dawb thyroid hormone T3
Cov chaw kuaj kabmob sib txawv tsim lawv tus kheej ib txwm rau cov khoom uas hais txog. Lawv vam khom txoj kev xam nws cov concentration, cov khoom ntsuas thiab cov cuab yeej siv tau.
Rau cov ntsiab lus meej immunochemiluminescent ntsuas, qhov tseem ceeb uas tau piav qhia yog nyob ntawm kev ua tau ntawm 2.62 mus rau 5.69 nmol / l. Thaum muaj cov cuab yeej tsawg dua, cov kev txwv qis tshaj yog feem ntau qhia me ntsis siab, 5.77 nmol / l.
Vim li cas cov tshuaj hormones T3 dawb li cas?
Kev hloov ntawm qhov qub qhov tseem ceeb feem ntau qhia txog kev sib txawv ntawm cov kab mob los yog cov kev mob hauv lub cev los ntawm kev kho mob.
Lub hauv paus ntsiab lus tseem ceeb rau kev tsa cov tshuaj T3 dawb:
- tshaj qhov pom zoo ntawm lub cev hnyav;
- ib chav kawm ua tiav hemodialysis;
- cov thyroid tsis ntev (ib ntus) tom qab yug menyuam;
- myeloma nrog ua ke nrog kev siab ntawm immunoglobulin G;
- subacute lossis mob thyroiditis;
- daim siab mob siab;
- nephrotic syndrome nyob hauv kev loj hlob ntawm glomerulonephritis;
- HIV kis kab mob;
- choriocarcinoma;
- hyperestrogenia;
- porphyria ;
- diffuse toxic goiter;
- txais tos ntawm cov khoom cua thyroid hormones, ntau yam tshuaj tiv thaiv kabmob, tshuaj txiav yeeb, cordarone.
Nws yog ib qho tsim nyog yuav tsum tau nyob rau hauv qhov kev lag luam endocrinologist yog hais tias qhov tshuaj T3 dawb yog tsa - qhov kev kho mob pib thaum lub sij hawm, yuav pab kom tsis txhob muaj teeb meem ntawm cov kab mob uas tau teev tseg, los tiv thaiv kev loj hlob ntawm malignant neoplasms thiab metastasis.
Vim li cas ho yog cov tshuaj T3 dawb?
Qhov kev txo qis rau ntawm qhov uas tsis tau tso cai rau tri-thirotxin tsis zoo li qhov nws nce. Lub hauv paus ntsiab lus tseem ceeb xws li cov txiaj ntsig tau
- tsis muaj txhij ntawm kev ua haujlwm ntawm adrenal;
- mob hlwb;
- noj zaub mov tsis muaj protein ntau;
- hypothyroidism ;
- rov qab los ntawm tus kab mob loj;
- kev kho mob nrog cov qoob loo, cov tshuaj noj, cov tshuaj tua kab mob, cov tshuaj antithyroid, steroids;
- txais tos tsis ntev los no ntawm kev sib tham ntawm radiocontrast.