I-Triiodothyronine (T3) yi-hormone eveliswa ngama-cell gland. Uninzi lwazo zonke, lusekwe kwimizimba yechungechunge kwi-deyodination ye-hormone thyroxine (T4). I-triiodothyronine yamahhala i malunga ne-0.2-0.5% ye-hormone epheleleyo egazini.
Isiqhelo se-triiodothyronine yamahhala
Isiqhelo se-triiodothyronine samahhala sincike kwizinto eziliqela kwaye zihluka kumntu omdala ukusuka kwi-2.6 ukuya ku-5.7 ntol / l. Iimimiselo ziyakucingwa kwaye ziguquke kwi-3.2 - 7.2 pmol / l.
Izinga le-triiodothyronine yamahhala kumabhinqa lincinci kunamadoda ngendawo ethile phakathi kwama-5-10%. Ukuba umgangatho we-T3 kwabasetyhini ukwanda, kukho ukungaqhelekanga nokuya esikhathini, kwaye kumadoda izilonda ze-mammary ziqala ukwandisa.
Iyiphi indima yehomoni ye-triiodothyronine?
Le hormone yenza imisebenzi elandelayo:
- ulawula ukutshintshiselwa kunye nokusetyenziswa kwe-oksijeni ngamathambo ahlukeneyo omzimba;
- kwandisa imveliso yokushisa;
- ikhawuleza imetabolism kwaye, ngokukodwa, iprotheni;
- kunciphisa izinga le-triglycerides kunye ne-cholesterol egazini;
- ikhuthaza ukukhula komzimba kumzimba;
- igalelo ekusebenzeni ngokuqhelekileyo kwinkqubo yesistim ephakathi;
- ichaphazela ukusetyenziswa kwe-vitamin A kwisibindi;
- ukwandisa ukuphuma kwe calcium kumchamo;
- iququzelela ukutshintshiselwa kwamathambo esithambo;
- ngokuqinisekileyo ichaphazela umsebenzi we-cardiovascular system;
- unokutshintsha i-metabolism ye lipids.
Ziziphi izimbangela zokunyuka kwamahhala e-triiodothyronine?
Izizathu zokunyuka kwi-triiodothyronine yamahhala zinoku:
- i-thyrotoxicosis - uphuhliso olugqithiseleyo lwe-hormone yi-thyroid gland;
- ukusilela kwe-iodine - xa kuvela i-goiter;
- ukuthatha iziyobisi ezichaphazela imvelaphi ye-hormone yomzimba-estrogen, ukukhulelwa komlomo kunye nezinye iindlela.
Indlela yokuphatha i-triiodothyronine ephezulu yamahhala?
Ukuxilongwa kwesifo se-thyroid okanye ukukrokra kwenyusa ukukhutshwa kwe-hormone (okuthiwa yi-T3-toxicosis), ukuhlaziywa kwe-triiodothyronine yamahhala kwenziwa. Ngokweziphumo zalo, kuxhomekeke kwisifo esifumeneyo, ugqirha ubeka unyango olufanelekileyo.