Abstract
There are many different rheumatic symptoms of gastrointestinal (GI) disorders and a whole range of GI symptoms that occur in rheumatologic disorders. Spondyloarthropathies (SpA) are closely related to the GI tract. Bacterial DNA has been detected in peripheral but not the sacroiliac joints of patients, including enterobacteria; the significance of this finding is not clear yet because antibiotic therapy seems not to be effective. The synovial lymphocyte proliferation of reactive arthritis (ReA) patients to the 60-kD heat-shock protein of Yersinia plays a major role in the immune response. Anti-Klebsiella antibodies are associated with gut lesions in SpA; their significance for the pathogenesis of SpA remains uncertain. ReA patients seem to have an impaired TH1-cytokine response, which might contribute to disease persistence. HLA B27-positive subjects seem to have a low tumor necrosis factor-alpha secretor status, possibly leading to diminished immune responses against certain microbes. In patients with Whipple's disease, Tropheryma whippelii can be cultured from gut biopsy specimens when interleukin-4 is added. The gene for hemochromatosis has been identified. Hepatitis C virus DNA can be found in many patients with cryoglobulinemia. Treatment with interferon-alpha might help in some patients. Effective treatment for primary biliary cirrhosis with ursodeoxycholic acid is not helpful for rheumatic symptoms. The severity of esophageal dysfunction in systemic sclerosis does not correlate with symptoms. GI symptoms do, although not frequently, occur in vasculitides.
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