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Anti-thyroid-stimulating hormone receptor antibodies determined by second-generation assay

  • Amani Mankaï , Dorsaf Toumi , Molka Chadli-Chaieb , Leila Ghedira-Besbes , Fathia Saad , Mohamed Ouertani , Habib Sfar , Moncef Jeddi , Larbi Chaieb and Ibtissem Ghedira
Published/Copyright: January 1, 2007
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Clinical Chemistry and Laboratory Medicine (CCLM)
From the journal Volume 45 Issue 1

Abstract

Background: The aim of our study was to determine the frequency of anti-thyroid-stimulating hormone (TSH) receptor antibodies (TRAb) in Tunisian patients with Graves' disease (GD) and to compare the validity of TRAb to that of thyroperoxidase (TPO-Ab) and thyroglobulin antibodies (TG-Ab).

Methods: ELISA was used to determine the frequency of TRAb, TPO-Ab and TG-Ab in sera of 190 patients with GD. Patients were divided into four groups: those with untreated active GD (group A, n=71), those receiving treatment with anti-thyroid drugs (group B, n=85), those in relapse (group C, n=15) and those in remission (group D, n=19). Sera of 100 healthy blood donors served as controls.

Results: The sensitivity of TRAb for the diagnosis of GD (95.8%) was significantly higher than that of TPO-Ab (73.2%) and TG-Ab (42.2%) (p=0.0005 and p<10–7, respectively). The positive rate for TRAb was lower in group B than in group A (70.6% and 95.8%, respectively; p=0.0001). The levels of TRAb were significantly higher in group A than in group B (mean 30.1 and 14.2 IU/L, respectively; p=0.006).

Conclusions: TRAb, but neither TPO-Ab nor TG-Ab, is valuable in the diagnosis and management of patients with GD.

Clin Chem Lab Med 2007;45:26–9.

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Corresponding author: Ibtissem Ghedira, Laboratory of Immunology, Farhat Hached Hospital, Avenue Ibn El Jazzar, 4000 Sousse, Tunisia Phone: +216-73221411, Fax: +216-73226702

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Published Online: 2007-01-01
Published in Print: 2007-01-01

©2007 by Walter de Gruyter Berlin New York

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