PMID: 20646416Jul 22, 2010Paper

The diagnostic value of anti-SSA antibody in primary Sjögren's syndrome

Zhonghua nei ke za zhi
Meng-tao LiYi Dong

Abstract

According to international classification criteria (2002) on Sjögren's syndrome, labial pathology was still considered as a major criterion for diagnosis. Standard labial biopsy was hard to be carried out in China. This study is to evaluate whether the invasive labial biopsy could be replaced by noninvasive detection of serum anti-SSA antibody. 181 Chinese patients with the initial diagnosis of primary Sjögren's syndrome in Peking Union Medical College Hospital (PUMCH) were enrolled in Sjögren's International Collaborative Clinical Alliance (SICCA). All patients received standard labial biopsies (area of salivary gland tissue ≥ 4 mm²) and focal score (FS) of focal lymphatic sialadenitis were confirmed by pathologists from school of stomatology, University California of San Francisco (UCSF). Anti-SSA antibodies in sera of all patients were detected by double immunodiffusion (DID), Western blot in PUMCH and by enzyme-linked immunosorbent assay (ELISA) in central laboratory of SICCA. The correlation between labial pathological findings and serum anti-SSA antibody was studied by chi² test and the concordance was calculated by unweighted Kappa. (1) Bivariate analysis revealed strong associations of FS > 1 with the presence of anti-S...Continue Reading

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