rdf:type |
|
lifeskim:mentions |
|
pubmed:issue |
3
|
pubmed:dateCreated |
2005-7-27
|
pubmed:abstractText |
Both viral effect and immune-mediated mechanism are involved in the pathogenesis of severe acute respiratory syndrome-associated coronavirus (SARS-CoV) infection. In this study, we showed that in SARS patient sera there were autoantibodies (autoAbs) that reacted with A549 cells, the type-2 pneumocytes, and that these autoAbs were mainly IgG. The autoAbs were detectable 20 days after fever onset. Tests of non-SARS-pneumonia patients did not show the same autoAb production as in SARS patients. After sera IgG bound to A549 cells, cytotoxicity was induced. Cell cytotoxicity and the anti-epithelial cell IgG level were positively correlated. Preabsorption and binding assays indicated the existence of cross-reactive epitopes on SARS-CoV spike protein domain 2 (S2). Furthermore, treatment of A549 cells with anti-S2 Abs and IFN-gamma resulted in an increase in the adherence of human peripheral blood mononuclear cells to these epithelial cells. Taken together, we have demonstrated that the anti-S2 Abs in SARS patient sera cause cytotoxic injury as well as enhance immune cell adhesion to epithelial cells. The onset of autoimmune responses in SARS-CoV infection may be implicated in SARS pathogenesis.
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pubmed:commentsCorrections |
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pubmed:language |
eng
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pubmed:journal |
|
pubmed:citationSubset |
IM
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pubmed:chemical |
|
pubmed:status |
MEDLINE
|
pubmed:month |
Sep
|
pubmed:issn |
0009-9104
|
pubmed:author |
pubmed-author:FangY TYT,
pubmed-author:KuoY MYM,
pubmed-author:LEEM MMM,
pubmed-author:LeiH YHY,
pubmed-author:LiaoP CPC,
pubmed-author:LiuY LYL,
pubmed-author:MinB HBH,
pubmed-author:RaoM PMP,
pubmed-author:ShiehC C KCC,
pubmed-author:SuI JIJ,
pubmed-author:WangH JHJ,
pubmed-author:YenJ HJH
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pubmed:issnType |
Print
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pubmed:volume |
141
|
pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
500-8
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pubmed:dateRevised |
2009-11-18
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pubmed:meshHeading |
pubmed-meshheading:16045740-Autoantibodies,
pubmed-meshheading:16045740-Cell Adhesion,
pubmed-meshheading:16045740-Cell Death,
pubmed-meshheading:16045740-Cell Line, Tumor,
pubmed-meshheading:16045740-Cross Reactions,
pubmed-meshheading:16045740-Cytotoxicity Tests, Immunologic,
pubmed-meshheading:16045740-Epithelial Cells,
pubmed-meshheading:16045740-Humans,
pubmed-meshheading:16045740-Immunoglobulin G,
pubmed-meshheading:16045740-Lung,
pubmed-meshheading:16045740-Membrane Glycoproteins,
pubmed-meshheading:16045740-SARS Virus,
pubmed-meshheading:16045740-Severe Acute Respiratory Syndrome,
pubmed-meshheading:16045740-Viral Envelope Proteins
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pubmed:year |
2005
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pubmed:articleTitle |
Antibody to severe acute respiratory syndrome (SARS)-associated coronavirus spike protein domain 2 cross-reacts with lung epithelial cells and causes cytotoxicity.
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pubmed:affiliation |
Department of Microbiology and Immunology, National Cheng Kung University Medical College, Tainan, Taiwan.
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pubmed:publicationType |
Journal Article
|