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Elevated serum anti-carbonic anhydrase II antibodies in patients with ulcerative colitis

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An autoimmune mechanism has been postulated for the pathogenesis of ulcerative colitis (UC). The aim of this study was to evaluate the presence of anti-carbonic anhydrase (CA) I and anti-CA II antibodies in a series of inflammatory bowel disease (IBD) patients. We studied 58 IBD patients [36 UC patients and 21 patients with Crohn's disease (CD)]. As a control, 24 healthy individuals and 12 patients with non-IBD diarrheal diseases were tested. Serum anti-CA I and anti-CA II antibodies were quantified by enzyme-linked immunosorbent assay. Anti-CA II antibody was detected in 27.8% of UC patients, whereas anti-CA I antibody was detected in only 5.6% of UC patients. Positive rate of anti-CA II antibody was significantly higher in UC patients as compared to the control. In CD patients and non-IBD diarrheal patients, there were no significant increase in positive rate of either anti-CA I or II antibody. These results suggest that autoimmune responses against CA II may be involved in the pathogenesis of UC, and similar mechanism may participate in the development of pancreatic lesions in UC patients.
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Document Type: Research Article

Affiliations: Department of Internal Medicine, Shiga University of Medical Science, Seta-Tukinowa, Otsu 520-2192, Japan., Email: [email protected]

Publication date: January 1, 2002

More about this publication?
  • The International Journal of Molecular Medicine is a monthly, peer-reviewed journal devoted to the publication of high quality studies related to the molecular mechanisms of human disease. The journal welcomes research on all aspects of molecular and clinical research, ranging from biochemistry to immunology, pathology, genetics, human genomics, microbiology, molecular pathogenesis, molecular cardiology, molecular surgery and molecular psychology.

    The International Journal of Molecular Medicine aims to provide an insight for researchers within the community in regard to developing molecular tools and identifying molecular targets for the diagnosis and treatment of a diverse number of human diseases.
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