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  • Title: A functional interleukin-10 mutation in Dutch patients with Crohn's disease.
    Author: van der Linde K, Boor PP, van Bodegraven AA, de Jong DJ, Crusius JB, Naber TH, Kuipers EJ, Wilson JH, de Rooij FW.
    Journal: Dig Liver Dis; 2005 May; 37(5):330-5. PubMed ID: 15843082.
    Abstract:
    BACKGROUND AND AIMS: Interleukin-10 is an anti-inflammatory and immunomodulatory cytokine. Interleukin-10 deficient mice are prone to develop chronic colitis. Administration of recombinant human interleukin-10 has been proposed to have a beneficial effect in a subgroup of patients with Crohn's disease. Recently, we found an interleukin-10 Gly15Arg mutation in a family with Crohn's disease which is associated with reduced interleukin-10 secretion by in vitro stimulated monocytes and lymphocytes. We hypothesised that this interleukin-10 mutation plays a role in maintaining the inflammatory process in Crohn's disease in some families. PATIENTS AND METHODS: We evaluated interleukin-10 Gly15Arg in 379 patients with Crohn's disease, and 75 unrelated healthy controls. Also, first degree family members of interleukin-10 Gly15Arg carriers were evaluated. Additionally, mutation carriers and their relatives were evaluated for CARD15 R702W, G908R, and 1007fs. RESULTS: Two patients with Crohn's disease were heterozygous for the interleukin-10 Gly15Arg mutation. No homozygotes were found. The Gly15Arg mutation was not observed in the controls. In first degree family members of the Crohn's disease-affected interleukin-10 Gly15Arg carriers, the mutation was found in Crohn's disease-affected as well as in their apparently healthy individuals. All family members carried one or two CARD15 mutation(s). CONCLUSION: The interleukin-10 Gly15Arg mutation is rare in patients with Crohn's disease, and is not associated with the disease in the Netherlands.
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