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- Title
Interleukin-4 and interleukin-4 receptor gene polymorphisms in inflammatory bowel diseases.
- Authors
Klein, W; Tromm, A; Griga, T; Fricke, H; Folwaczny, C; Hocke, M; Eitner, K; Marx, M; Duerig, N; Epplen, J T
- Abstract
Imbalances in the regulation of Th1 and Th2 lymphocytes are crucial in inflammatory bowel diseases. Interleukin-4 is secreted by Th2 lymphocytes and downregulates cytokine production from Th I lymphocytes. Functionally relevant polymorphisms have been described in the interleukin-4 and the interleukin-4 receptor α genes. Association of inflammatory bowel diseases with these polymorphisms has been reported recently suggesting high transcription and enhanced signalling activity in Crohn's disease. Our study, comprising 211 patients with Crohn's disease, 147 patients with ulcerative colitis and 446 healthy controls revealed significant association of Crohn's disease with the -590 T allele of the interleukin-4 gene (P = 0.03). This allele entails reduced expression of IL-4. The reason for these contrasting findings may be discussed in the context of a putatively predisposing allele in linkage disequilibrium with the alleles of the interleukin-4 gene. Genes and Immunity (2001) 2, 287-289.
- Subjects
INTERLEUKIN-4; GENETIC polymorphisms; INFLAMMATORY bowel diseases; CROHN'S disease; COLITIS
- Publication
Genes & Immunity, 2001, Vol 2, Issue 5, p287
- ISSN
1466-4879
- Publication type
Article
- DOI
10.1038/sj.gene.6363779