OSETLJIVOST TRI TESTA ZA ODREĐIVANJE ANTITELA NA RECEPTOR ZA TIREOSTIMULIŠUĆI HORMON U ORBITOPATIJI POVEZANOJ SA TIROIDNOM ŽLEZDOM

Osetljivost TSH-R-At testova u TAO

  • Marija Sarić Matutinović
  • Tanja Diana Laboratorija za Molekularna tiroidna istraživanja, Odeljenje Medicine I, Johanes Gutenberg Univerzitetski Medicinski Centar, Majnc, Nemačka
  • Biljana Nedeljković Beleslin Klinika za endokrinologiju, dijabetes i bolesti metabolizma, Univerzitetski klinički centar Srbije, Beograd, Srbija; Univerzitet u Beogradu-Medicinski fakultet, Beograd, Srbija
  • Jasmina Ćirić Klinika za endokrinologiju, dijabetes i bolesti metabolizma, Univerzitetski klinički centar Srbije, Beograd, Srbija; Univerzitet u Beogradu-Medicinski fakultet, Beograd, Srbija
  • Miloš Žarković Klinika za endokrinologiju, dijabetes i bolesti metabolizma, Univerzitetski klinički centar Srbije, Beograd, Srbija; Univerzitet u Beogradu-Medicinski fakultet, Beograd, Srbija
  • Iva Perović Blagojević Služba za laboratorijsku dijagnostiku Kliničko-bolničkog centra „Dr Dragiša Mišović-Dedinje“, Beograd, Srbija
  • Džordž J Kahali Laboratorija za Molekularna tiroidna istraživanja, Odeljenje Medicine I, Johanes Gutenberg Univerzitetski Medicinski Centar, Majnc, Nemačka
  • Svetlana Ignjatović Univerzitet u Beogradu-Farmaceutski fakultet, Beograd, Srbija; Centar za Medicinsku biohemiju, Univerzitetski klinički centar Srbije, Beograd, Srbija
Ključne reči: orbitopatija povezana sa tiroidnom žlezdom, antitela na receptor za tireostimulišući hormon, bioesej, ''sendvič imunohemijski test, ECLIA kompetitivni imunohemijski test

Sažetak


Uvod i ciljevi: Autoantitela na receptore tireostimulišućeg hormona (TSH-R-At) su nezamenljivi biomarkeri u laboratorijskoj proceni orbitopatije povezane sa tiroidnom žlezdom (TAO). U studiji je procenjena klinička osetljivost tri različita testa za određivanje TSH-R-At kod pacijenata sa TAO. Metode: U studiju je uključeno 87 uzastopnih pacijenata sa TAO i njihovi uzorci seruma su analizirani paralelno, upotrebom sva tri testa. Za merenje ukupne i vezujuće koncentracije TSH-R-At korišćeni su ECLIA imunohemijski test kompetitivnog vezivanja i ''sendvič'' hemiluminiscentni imunotest, dok je njihova funkcionalna aktivnost određena primenom metode stimulatornog ćelijskog biološkog testa, odnosno bioeseja (TSAb). Rezultati: U poređenju sa dva vezujuća imunotesta (ECLIA p<0,001, most p=0,003), biološki TSAb test je bio značajno osetljiviji za pozitivnu detekciju TSH-R-At kod pacijenata sa TAO. Nije primećena razlika (p=0,057) između ECLIA i ''sendvič'' vezujućeg imunotesta u pogledu stope osetljivosti. Svi pacijenti sa aktivnom i/ili umerenom do teškom TAO bili su pozitivni u TSAb biološkom testu (100% i 100%, redom), dok su stope pozitivnosti za ''sendvič'' imunotest i ECLIA vezujući imunohemijski test bile 89,7% i 82,1% za aktivnu TAO, i 90,2% i 86,3% za tešku TAO, redom. Negativne prediktivne vrednosti bioeseja, ''sendvič'' imunotesta i ECLIA imunotesta kompetitivnog vezivanja bile su 100%, 75% i 71%, redom za aktivnu TAO, odnosno 100%, 86% i 71%, redom za umerenu do tešku TAO. Superiornost biološke analize bila je najistaknutija kod eutireoidnog oblika (ET) TAO. Stope pozitivnosti TSAb bioeseja, ''sendvič'' i ECLIA imunotestova vezivanja bile su 89,6%, 75% i 64,6%, redom za neaktivnu TAO; 86,1%, 69,4% i 52,8% za blagu formu TAO; 87,5%, 62,5% i 12,5% za eutireoidni oblik TAO. ''Sendvič'' imunotest je bolje korelirao sa ECLIA testom vezivanja (ρ=0,893, p<0,001), u poređenju sa bioesejom (ρ=0,669, p<0,001). Zaključci: Kod pacijenata sa TAO različite aktivnosti i težine, TSAb biološki test pokazuje superiorne kliničke karakteristike u poređenju sa oba imunohemijska testa vezivanja.

 

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2021/12/06
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Original paper