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Cross-Reaction of SARS-CoV Antigen with Autoantibodies in Autoimmune Diseases

Cellular & Molecular Immunology 2004年第4期1卷 304-307页

作者： YunshanWang shanhuisun HongShen LihuaJiang MaoxiuZhang DongjieXiao YangLiu XiaoliMa YongZhang NongjianGuo TanghongJia CentralLaboratory JinanCentralHospitalClinicalMedicalCollegeofShandongUniversityJinanChina. ShandongResearchCenterforTransplantationandTissueEngineering JinanChina.

To investigate the significance of the SARS-associated coronavirus (SARS-CoV) antibody,detected by ELISA and indirect immunofluorescence assays (IFA) for the SARS-CoV Vero E6 cell lysates,in non-SARS subjects, 114 serum samples from healthy controls and 104 serum specimens from autoimmune disease patients were *** results of ELISA showed that among 114 sera from healthy controls,4 (3.5%) were positive of SARS-CoV-IgG antibody and 114 (100%) were all negative of SARS-CoV-IgM antibody;the specificity of SARS-CoV-IgG antibody for SARS patients was 96.5%,but the specificity of both SARS-CoV-IgG and -IgM antibodies for SARS patients was 100%.In 58 cases with SLE,positive rates of SARS-CoV-IgG and -IgM antibodies were 32.8% (19/58) and 8.6% (5/58),respectively,in which 11 cases (19%) were positive of both SARS-CoV-IgG and -IgM antibodies;in 10 cases with SS,positive rate of both SARS-CoV-IgG and -IgM antibodies was 10% (1/10);in 16 cases with MCTD,positive rate of SARS-CoV-IgG was 37.5% (6/16),positive rate of both SARS-CoV-IgG and -IgM antibodies was 6.3% (1/16);in 20 cases with RA,one case was positive (5%) of ***,of all samples with positive SARS-CoV-IgG and -IgM antibodies for autoimmune diseases and healthy controls,SARS-CoV RNA and antibodies were all negative by RT-PCR and *** sera for negative or positive ELISA results were also negative or positive results using ELISA with Vero E6 cells *** studies showed that SARS-CoV Vero E6 cell lysates for the ELISA to detect SARS-CoV antibodies could lead to the false-positive reactions or cross-reactions of SARS-CoV antibodies in non-SARS diseases and healthy controls,and the false-positive reactions or cross-reactions were related to Vero E6 cell lysates and autoantibodies in non-SARS *** & Molecular Immunology.2004;1(4): 304-307.

关键词： SARS-CoV autoimmune disease cross-reaction

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