Document Detail


A study of the association of HLA DR, DQ, and complement C4 alleles with systemic lupus erythematosus in Iceland.
MedLine Citation:
PMID:  9797559     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
OBJECTIVE: To perform an exploratory analysis of the relative contribution of single MHC genes to the pathogenesis of systemic lupus erythematosus (SLE) in a homogenous white population. METHODS: MHC class II alleles and C4 allotypes were determined in 64 SLE patients and in ethnically matched controls. HLA-DR and DQ typing was performed by polymerase chain reaction amplification with sequence specific primers. C4 allotypes were determined by agarose gel electrophoresis. RESULTS: The frequency of C4A*Q0 was significantly higher in patients than in controls (46.9% v 25.3%, p = 0.002). HLA-DRB1, DQA1, and DQB1 alleles in the whole group of SLE patients were not significantly different from those of controls. On the other hand increase in DRB1*03 was observed in the group of patients with C4A*Q0, as compared with patients with other C4A allotypes (p = 0.047). There was no significant correlation between severe and mild disease, as judged by the SLEDAI, and HLADR, DQ alleles and comparing the patients with C4A*Q0 with those with other C4A allotypes there was no significant difference regarding clinical manifestations. CONCLUSION: The results are consistent with the argument that C4A deficiency contributes independently to susceptibility and the pathogenesis of SLE. C4A*Q0 in SLE patients in Iceland shows weaker linkage disequilibrium with DR3 genes than reported in most other white populations and emphasises the role of ethnicity.
Authors:
K Steinsson; S Jónsdóttir; G J Arason; H Kristjánsdóttir; R Fossdal; I Skaftadóttir; A Arnason
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Annals of the rheumatic diseases     Volume:  57     ISSN:  0003-4967     ISO Abbreviation:  Ann. Rheum. Dis.     Publication Date:  1998 Aug 
Date Detail:
Created Date:  1998-11-05     Completed Date:  1998-11-05     Revised Date:  2008-11-20    
Medline Journal Info:
Nlm Unique ID:  0372355     Medline TA:  Ann Rheum Dis     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  503-5     Citation Subset:  IM    
Affiliation:
Department of Internal Medicine, Landspítalinn, National University Hospital, Reykjavik, Iceland.
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MeSH Terms
Descriptor/Qualifier:
Adolescent
Adult
Aged
Alleles*
Child
Complement C4 / genetics*
Female
Genes, MHC Class II*
HLA-DQ Antigens / genetics
HLA-DR Antigens / genetics
Humans
Iceland
Lupus Erythematosus, Systemic / genetics*
Male
Middle Aged
Chemical
Reg. No./Substance:
0/Complement C4; 0/HLA-DQ Antigens; 0/HLA-DR Antigens; 128338-86-3/HLA-DRB1 antigen

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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