I-Triiodothyronine (T3) i-hormone ekhishwa ngamangqamuzana wegciwane le-thyroid. Okungaphezu kwakho konke, kuhlanganiswa amathisipha omzimba lapho kuqhathaniswa ne-hormone thyroxine (T4). I-triiodothyronine yamahhala ingu-0.2-0.5% we-hormone ephelele egazini.
Umkhuba we-triiodothyronine wamahhala
Isimiso se-triiodothyronine samahhala sincike ezintweni eziningana futhi kuhluka kumuntu omdala kusuka ku-2.6 kuya ku-5.7 pmol / l. Izindinganiso zingacatshangelwa futhi ziguquke phakathi kuka 3.2 - 7.2 pmol / l.
Izinga lika-triiodothyronine yamahhala kubantu besifazane liphansi kunamadoda endaweni ethile phakathi kuka-5-10%. Uma ukujwayelekile kwe-T3 kwabesifazane kuyanda, kunokuya esikhathini esingavamile futhi okubuhlungu, futhi emadodeni ama-gland amantombazane aqala ukwanda.
Iyini indima ye-hormone triiodothyronine?
Le hormone yenza imisebenzi elandelayo:
- ilawula ukushintshaniswa nokusetshenziswa kwe-oxygen ngamathambo ahlukahlukene omzimba;
- ukwandisa ukukhiqizwa kokushisa;
- kusheshisa umzimba futhi, ikakhulu, amaprotheni;
- kunciphisa izinga lika-triglycerides ne-cholesterol egazini;
- ikhuthaza ukukhula kwezicubu emzimbeni;
- kunomthelela ekusebenzeni okujwayelekile kwesistimu yezinzwa zomphakathi;
- kuthinta ukuqala kwe-vitamin A esiswini;
- ukwandisa i-excretion ye-calcium kumchamo;
- ivuselela ukushintshaniswa kwamathambo;
- ngokuthinta kakhulu kuthinta umsebenzi wesistimu yenhliziyo;
- kungashintsha imetabolism ye lipids.
Yiziphi izimbangela zokunyuka kwama-triiodothyronine mahhala?
Izizathu zokwanda kwe-triiodothyronine mahhala zingaba kanje:
- i-thyrotoxicosis - ukuthuthukiswa okwedlulele kwe-hormone ngengqungquthela yegciwane;
- ukuntuleka kwe-iodine - lapho kuqhutshwa i-goiter;
- ukuthatha izidakamizwa ezithinta isizinda se-hormone yomzimba - estrogen, ukukhulelwa komlomo nezinye izindlela.
Indlela yokuphatha i-triiodothyronine ephakeme yamahhala?
Ukuze kutholakale isifo se-thyroid noma ukusola ukwanda okungekho emthethweni kwe-hormone secretion (okuthiwa i-T3-toxicosis), kuhlaziywa kwe-triiodothyronine yamahhala. Ngokusho kwemiphumela yayo, kuye ngokuthi isifo esitholakale, udokotela ubeka ukwelashwa okufanele.