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  • Title: Immunogenetics, HLA-B27 and spondyloarthropathies.
    Author: González S, Martínez-Borra J, López-Larrea C.
    Journal: Curr Opin Rheumatol; 1999 Jul; 11(4):257-64. PubMed ID: 10411379.
    Abstract:
    HLA-B27 is the strongest HLA molecule associated with a disease. However, the reason only a small fraction of HLA-B27 positive individuals develop spondyloarthropathies is still unknown. Recent advances in genetics support the fact that additional genetic factors influence the disease and that the environmental factors may be ubiquitous. The mechanism of association of HLA-B27 and disease remains unknown, but recent studies reveal some peculiar properties of accessory molecules in antigen presentation of B27. Furthermore, research has focused on the analysis of HLA-B27-restricted processing and presentation of a bacteria-derived peptide as playing a key role in the development of spondyloarthropathy. Other studies support a more complex interaction between bacteria and HLA-B27 and suggest that other roles unrelated to antigen presentation might contribute to the development of SpA.
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