{"id":611,"date":"2023-02-06T03:52:59","date_gmt":"2023-02-06T03:52:59","guid":{"rendered":"http:\/\/scientificadvances.org\/?p=611"},"modified":"2023-02-06T03:52:59","modified_gmt":"2023-02-06T03:52:59","slug":"however-this-patient-tested-negative-in-the-bridge-binding-assay","status":"publish","type":"post","link":"https:\/\/scientificadvances.org\/?p=611","title":{"rendered":"\ufeffHowever, this patient tested negative in the bridge binding assay"},"content":{"rendered":"

\ufeffHowever, this patient tested negative in the bridge binding assay. positivity rates for bridge and ECLIA binding assays were 89.7% and 82.1% for active TAO, and 90.2% and 86.3% for severe TAO, respectively. Negative predictive values of the bioassay, bridge, and ECLIA assays were 100%, 75%, and 71%, respectively for active TAO, and 100%, 86%, and 71%, respectively for moderate-to-severe TAO. The superiority of the bioassay was most prominent in euthyroid (ET) TAO. Positivity rates of the TSAb bioassay, bridge and ECLIA binding assays were 89.6%, 75%, and 64.6%, respectively for inactive TAO; 86.1%, 69.4%, and 52.8%, respectively for mild TAO; 87.5%, 62.5%, and 12.5%, respectively for euthyroid TAO. The bridge assay correlated better with the ECLIA binding assay (r=0.893, p 0.001), compared to the bioassay (r=0.669, p 0.001). Conclusions In patients with TAO of various activity and severity, the TSAb bioassay demonstrates a superior clinical performance compared to both ECLIA and bridge binding assays. strong class=”kwd-title” Keywords: thyroid-associated orbitopathy, thyrotropin receptor antibodies, bioassay, bridge binding assay, ECLIA binding assay Abstract Uvod Autoantitela na receptore za tireostimuli?u?i hormon (TSH-R-Ab) su nezamenljivi biomarkeri Isoliquiritigenin<\/a> u laboratorijskoj proceni orbitopatije udru’ene sa ?titnom ?lezdom (TAO). U radu je procenjena klini?ka osetljivost tri razli?ita testa za odre?ivanje TSH-R-Ab kod pacijenata sa TAO. Metode U studiju je klju?eno 87 uzastopnih pacijenata sa TAO i njihovi uzorci seruma su analizirani paralelno sa tri Isoliquiritigenin testa. Za merenje ukupne i Hbg1<\/a> vezuju?e koncentracije TSH-RAb kori??eni su ECLIA imunohemijski test kompetitivnog vezivanja i hemiluminiscentni imunohemijski “sendvi?” test, dok je njihova funkcionalna aktivnost odre?ena pomo?u ?elijskog biolo?kog testa (bioeseja) Isoliquiritigenin za odre?ivanje stimulatornih TSH-R-Ab (TSAb). Rezultati U pore?enju sa dva imunohemijska testa vezivanja (ECLIA P 0,001, “sendvi? test” P=0,003), TSAb bioesej se pokazao najosetljivijim u pogledu pozitivne detekcije TSH-RAb kod TAO pacijenata. Nikakva razlika nije detektovana (P=0,057) izme?u ECLIA i “sendvi?” testa u pogledu stope osetljivosti. TSAb bioesej je bio pozitivan kod svih pacijenata sa aktivnom i\/ili umerenom do te?kom TAO (redom 100% i 100%), dok su stope pozitivnosti za sendvi? i ECLIA imunohemijski test bile 89,7% i 82,1% za aktivnu TAO, i Isoliquiritigenin 90,2% i 86,3% za te?ku TAO, redom. Negativne Isoliquiritigenin prediktivne vrednosti bioeseja, “sendvi?” i ECLIA testova bile su redom 100%, 75% i 71%, za aktivnu TAO, odnosno 100%, 86% i 71%, redom za umerenu do te?ku TAO. Superiornost biolo?ke analize bila je najistaknutija kod eutiroidnog oblika (ET) TAO. Stope pozitivnosti TSAb bioeseja, “sendvi?” i ECLIA testova vezivanja bile su redom 89,6%, 75% i 64,6%, za neaktivnu TAO; 86,1%, 69,4% i 52,8% za blagu TAO; 87,5%, 62,5% i 12,5% za eutiroidni TAO. “Sendvi?” imunohemijski test je bio u boljoj korelaciji sa ECLIA testom kompetitivnog vezivanja (r=0,893, P 0,001), u pore?enju sa bioesejom (r=0,669, P 0,001). Zaklju?ak Kod pacijenata sa TAO razli?ite aktivnosti i te?ine TSAb bioesej pokazuje superiorne klini?ke performanse u pore?enju sa obe vrste imunohemijskih testova vezivanja (ECLIA i “sendvi? test”). strong class=”kwd-title” Keywords: orbitopatija udru?ena sa ?titnom ?lezdom, antitela na receptor za tireostimuli?u?i hormon, bioesej, “sendvi?” imunohemijski test vezivanja, ECLIA test vezivanja Introduction Thyrotropin receptor autoantibodies (TSH-R-Ab) are specific biomarkers of both Graves’ disease (GD) and thyroid-associated orbitopathy (TAO) that define their pathogenetic background and clinical phenotype. They represent an indispensable diagnostic tool in the clinical assessment of GD and TAO [1] [2] [3] [4] [5] [6]. TSH-R-Ab express variable biological activity and are accordingly classified as stimulating (TSAb), blocking (TBAb), and neutral antibodies [7]. A timely and sensitive serological TSH-R-Ab testing is crucial for definitive diagnosis of GD and thyroid related orbitopathy [8]. Total TSH-R-Ab concentration, usually denoted as TSH-R binding inhibitory imunoglobulins (TBII), is quantified by.<\/p>\n","protected":false},"excerpt":{"rendered":"

\ufeffHowever, this patient tested negative in the bridge binding assay. positivity rates for bridge and ECLIA binding assays were 89.7% and 82.1% for active TAO, and 90.2% and 86.3% for severe TAO, respectively. Negative predictive values of the bioassay, bridge, and ECLIA assays were 100%, 75%, and 71%, respectively for active TAO, and 100%, 86%, […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[24],"tags":[],"class_list":["post-611","post","type-post","status-publish","format-standard","hentry","category-rnapol"],"_links":{"self":[{"href":"https:\/\/scientificadvances.org\/index.php?rest_route=\/wp\/v2\/posts\/611","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/scientificadvances.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/scientificadvances.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/scientificadvances.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/scientificadvances.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=611"}],"version-history":[{"count":1,"href":"https:\/\/scientificadvances.org\/index.php?rest_route=\/wp\/v2\/posts\/611\/revisions"}],"predecessor-version":[{"id":612,"href":"https:\/\/scientificadvances.org\/index.php?rest_route=\/wp\/v2\/posts\/611\/revisions\/612"}],"wp:attachment":[{"href":"https:\/\/scientificadvances.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=611"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/scientificadvances.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=611"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/scientificadvances.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=611"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}