Rheumatology Vol. 43 No. 10 © British Society for Rheumatology 2004; all rights reserved
Letter to the Editor |
Anti-BiP antibody levels in juvenile idiopathic arthritis (JIA)
Oncology, St George's Hospital Medical School, 1 Centre for Paediatric Rheumatology, University College London,2 Rheumatology, GKT School of Medicine and3 Rheumatology Unit, Institute of Child Health, University College London, London, UK
Correspondence to: M. D. Bodman-Smith; E-mail: mbodmans@sghms.ac.uk
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SIR, We have previously described the human heat shock protein BiP (immunoglobulin binding protein; glucose regulated protein 78) as an autoantigen in rheumatoid arthritis [1]. Antibodies to BiP have been described in the serum of RA patients by ourselves and other groups [2, 3] and we have recently described anti-BiP antibodies in the synovial fluid of RA patients and the serum of patients with primary Sjögren's syndrome [3]. Moreover anti-BiP antibodies have been shown to be elevated in animal models of arthritis [1]. The functions