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Clinical and Developmental Immunology
Volume 11 (2004), Issue 1, Pages 53-56
http://dx.doi.org/10.1080/10446670410001670490

Autoantibodies Profile in the Sera of Patients with Sjogren]s Syndrome: The ANA Evaluation—A Homogeneous, Multiplexed System

1Department of Medicine B, Center for Autoimmune Diseases, Sheba Medical Center, Sackler Faculty of Medicine, Tel-Aviv University. Tel-hashomer, Israel
2Autoimmune Rheumatic Disease Unit, Soroka Medical Center and Ben-Gurion University, Beer-Sheva, Israel
3Section of Internal Medicine and Oncological Services, Department of Clinical and Experimental Medicine, Center for Study of Rheumatic Diseases, University of Perugia, Perugia, Italy

Copyright © 2004 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Background: Flow-based, multiplex bead arrays (MBA) have been developed for a variety of applications including the detection of antibodies to extractable nuclear antigens (ENA). It offers a rapid and sensitive method to assess multiple analyses in a single tube/well.

Purpose: To evaluate the Athena Multi-Lyte ANA Test System utilizes Luminex Corporation's MBA technology for the detection of antinuclear antibodies (ANA) and ENA antibodies in the sera of patients with Sjogren's syndrome (SS).

Methods: MBA assay was used to detect ANA and ENA antibodies in the sera of 37 patients with SS and 96 sera from healthy subjects.

Results: All patients were women. Their mean age was 48.7 years and the mean disease duration was 7.27 years. ANA was found in 3 (3%) sera of healthy subjects by the AtheNA system and in 2 (2%) sera by the ELISA kit. A 99% concordance between the 2 assays was found. A 94.6% concordance between the 2 assays was found by testing the sera of patients with SS for ANA.

By the AtheNA system, none of the sera of 37 patients with SS had autoantibodies reacting with Sm, Jo-1, dsDNA or histones. Anti-RNP antibody was found in 5.4% of the sera and 2.7% of the sera reacted with Scl-70 and histones. Anti-SS/A and anti-SS/B were identified in 84 and 76% of the sera, respectively.

Conclusion: The AtheNa Multi-Lyte ANA Test System offers a sensitive and specific result for the detection of ANA and ENA antibodies in the sera of patients with SS.