Document Detail

Specific anti-nuclear antibodies in systemic sclerosis patients with and without skin involvement: an extended methodological approach.
MedLine Citation:
PMID:  21330340     Owner:  NLM     Status:  Publisher    
Objectives. To determine how sensitively SSc-associated ANAs are detected by a standard identification algorithm compared with an extensive panel of ANA identification assays, and to assess the distribution of SSc-associated ANAs and SSc organ system involvement in patients without skin involvement (limited SSc). Methods. Serum samples from 145 consecutive monocentric SSc patients fulfilling LeRoy and Medgser's criteria for early SSc were studied. ANAs were detected by IIF on HEp-2000 cells and identified by western blotting, protein radio-immunoprecipitation, RNA immunoprecipitation and line immunoassay (LIA). SSc organ involvement was assessed according to a modification of Medsger's disease severity scale. Results. At least one specific ANA reactivity was present in 88% of the patients. The standard algorithm (IIF and LIA) found at least one specific ANA in 74% of the patients. The main reactivities missed by this algorithm were anti-RNA polymerase III, anti-PM/Scl and anti-Th/To. Eighty-three percent of the patients with limited SSc had at least one ANA. ACAs and anti-Th/To antibodies were significantly associated with limited SSc, whereas anti-topoisomerase I and anti-RNA polymerase III were observed less frequently. SSc organ system involvement was present in 63% of the patients with limited SSc, most of whom had lung involvement. Conclusions. Standard algorithms for ANA identification lack sensitivity for the detection of SSc-associated ANA and should be supplemented with additional assays, especially in a clinical environment that has particular interest in SSc. The spectrum of SSc-associated ANA differs according to the presence or absence of skin involvement.
Jens T Van Praet; Katleen Van Steendam; Vanessa Smith; Georges De Bruyne; Tsuneyo Mimori; Carolien Bonroy; Dirk Elewaut; Dieter Deforce; Filip De Keyser
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-2-17
Journal Detail:
Title:  Rheumatology (Oxford, England)     Volume:  -     ISSN:  1462-0332     ISO Abbreviation:  -     Publication Date:  2011 Feb 
Date Detail:
Created Date:  2011-2-18     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100883501     Medline TA:  Rheumatology (Oxford)     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Department of Rheumatology, Ghent University Hospital, Laboratory for Pharmaceutical Biotechnology, Department of Pharmaceutics, Ghent University, Laboratory for Experimental Cancer Research, Department of Radiation Oncology and Experimental Cancer Research, Ghent University Hospital, Ghent, Belgium, Department of Rheumatology and Clinical Immunology, Kyoto University Graduate School of Medicine, Kyoto, Japan and Department of Clinical Chemistry, Ghent University Hospital, Ghent, Belgium.
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