T3, los yog triiodothyronine, yog cov thyroid hormones uas ua lub luag haujlwm tseem ceeb hauv kev tswj cov metabolism, kev loj hlob, thiab kev loj hlob hauv lub cev. Nws yog ib qho ntawm ob lub ntsiab thyroid hormones tsim los ntawm cov thyroid caj pas, nrog rau lwm yam yog thyroxine (T4). T3 yog muab los ntawm kev hloov pauv ntawm T4 rau T3 hauv cov ntaub so ntswg peripheral, yooj yim los ntawm enzymes hu ua deiodinases.
Nov yog cov lus piav qhia ntawm T3:
Kev cai Metabolic:T3 ua lub luag haujlwm tseem ceeb hauv kev tswj cov metabolism los ntawm kev cuam tshuam lub cev lub cev metabolic tus nqi (BMR). Nws txhawb kev tsim cov cua sov thiab lub zog los ntawm cov hlwb, yog li ua kom oxygen noj thiab siv calorie ntau ntau. Cov nyhuv metabolic ntawm T3 yog qhov tseem ceeb rau kev tswj lub cev kub, lub zog sib npaug, thiab tag nrho cov metabolic homeostasis.
Kev loj hlob thiab kev loj hlob:T3 yog ib qho tseem ceeb rau kev loj hlob thiab kev loj hlob, tshwj xeeb tshaj yog thaum lub sij hawm loj hlob ntawm fetus thiab me nyuam yaus. Nws yog ib qho tseem ceeb rau txoj kev loj hlob ntawm lub hlwb, kev loj hlob ntawm cov pob txha, thiab kev loj hlob ntawm ntau yam ntaub so ntswg thiab lub cev. Hauv cov neeg laus, T3 tseem ua lub luag haujlwm hauv kev tu thiab kho cov ntaub so ntswg.
Kev cai ntawm Protein Synthesis:T3 cuam tshuam cov protein synthesis thiab degradation hauv hlwb, cuam tshuam rau kev hloov pauv ntawm cov protein hauv ntau cov ntaub so ntswg. Nws txhawb cov synthesis ntawm cov txheej txheem proteins, enzymes, thiab lwm yam tseem ceeb molecules, pab txhawb cov nqaij mos tu, kho, thiab kev loj hlob.
Kev cai ntawm Gene Expression:T3 ua raws li kev hloov pauv, tswj kev qhia ntawm ntau cov noob koom nrog hauv cov metabolism, kev tsim hluav taws xob, thiab kev ua haujlwm ntawm tes. Nws cuam tshuam nrog cov thyroid hormone receptors (TRs) nyob rau hauv lub nucleus ntawm cov hlwb, ua rau muaj kev hloov pauv hauv cov noob caj noob ces thiab cov protein synthesis.
Thyroid Function:T3 qib yog nruj tswj hwm los ntawm cov tswv yim tawm tswv yim nrog rau hypothalamus, pituitary caj pas, thiab thyroid caj pas. Lub hypothalamus tso tawm thyrotropin-tso cov tshuaj hormones (TRH), uas ua rau lub caj pas pituitary tsim cov thyroid-stimulating hormone (TSH). TSH ces txhawb cov thyroid caj pas los tsim thiab tso tawm T4 thiab T3. Kev nce qib T3 inhibit qhov kev tso tawm ntawm TRH thiab TSH los ntawm kev tawm tswv yim tsis zoo, pab tswj cov thyroid hormones hauv qhov nqaim.
Kev siv tshuaj kho mob:Synthetic T3, xws li liothyronine sodium, yog siv nyob rau hauv kev kho mob los kho hypothyroidism, ib tug mob tshwm sim los ntawm cov thyroid hormones tsis txaus. T3 supplementation tuaj yeem pab txo cov tsos mob ntawm hypothyroidism thiab rov ua haujlwm metabolic hauv cov tib neeg cuam tshuam. Tsis tas li ntawd, T3 yuav raug siv tawm ntawm daim ntawv lo rau qee yam mob thiab ua ib feem ntawm cov thyroid hormone hloov kho.
Zuag qhia tag nrho, T3 yog ib qho tseem ceeb ntawm cov tshuaj hormones koom nrog hauv cov metabolism, kev loj hlob, thiab kev loj hlob, nrog rau kev cuam tshuam loj ntawm cov cellular muaj nuj nqi thiab lub cev muaj zog thoob plaws hauv lub cev. Nws txoj cai tswj hwm yog qhov tseem ceeb rau kev tswj hwm cov metabolism hauv homeostasis thiab kev noj qab haus huv tag nrho.
