(GT)n Dinucleotide repeat polymorphism of haem oxygenase-1 promotor region is not associated with inflammatory bowel disease risk or disease course

M. Hausmann, G. Paul, S. Kellermeier, I. Frey, J. Schölmerich, W. Falk, K. Menzel, M. Fried, H. Herfarth, G. Rogler

Research output: Contribution to journalArticle

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Abstract

Haem oxygenase-1 (HO-1) up-regulation was suggested to reduce mucosal tissue damage in inflammatory bowel disease (IBD) and an up-regulation of HO-1 expression in patients with Crohn's disease (CD) and ulcerative colitis (UC) was demonstrated. A HO-1 gene promoter microsatellite (GT)n dinucleotide repeat polymorphism was associated with regulation of HO-1 in response to inflammatory stimuli. We therefore hypothesized that IBD patients might segregate into phenotypes with high or low HO-1 inducibility. Ethylenediamine tetraacetic acid blood samples were obtained from 179 CD patients, 110 UC patients and 56 control patients without inflammation. Genomic DNA was purified and the 5′-flanking region of the HO-1 gene containing the (GT) n dinucleotide repeat was amplified. Polymerase chain reaction (PCR) products were purified and the length of the PCR fragments was analysed. The number of (GT)n repeats in the population studied ranged from 13 to 42. The distribution of the allele frequencies was comparable in patients and controls for both the short and the long alleles. The frequencies of short-, middle- and long-sized alleles were not changed among the groups studied. No correlation was found between IBD and microsatellite instability detected in five individals. Our data indicate that (GT)n dinucleotide repeats of the HO-1 promotor region have no significance for the pathophysiology and disease course of IBD.

LanguageEnglish (US)
Pages81-85
Number of pages5
JournalClinical and Experimental Immunology
Volume153
Issue number1
DOIs
StatePublished - Jul 2008

Fingerprint

Dinucleotide Repeats
Heme Oxygenase (Decyclizing)
Inflammatory Bowel Diseases
Genetic Promoter Regions
ethylenediamine
Ulcerative Colitis
Crohn Disease
Up-Regulation
Alleles
Polymerase Chain Reaction
Microsatellite Instability
5' Flanking Region
Gene Frequency
Microsatellite Repeats
Genes
Mucous Membrane
Inflammation
Phenotype
Acids
DNA

Keywords

  • Dinucleotide repeat polymorphism
  • Haem oxygenase-1
  • IBD
  • Promoter

ASJC Scopus subject areas

  • Immunology

Cite this

(GT)n Dinucleotide repeat polymorphism of haem oxygenase-1 promotor region is not associated with inflammatory bowel disease risk or disease course. / Hausmann, M.; Paul, G.; Kellermeier, S.; Frey, I.; Schölmerich, J.; Falk, W.; Menzel, K.; Fried, M.; Herfarth, H.; Rogler, G.

In: Clinical and Experimental Immunology, Vol. 153, No. 1, 07.2008, p. 81-85.

Research output: Contribution to journalArticle

Hausmann, M. ; Paul, G. ; Kellermeier, S. ; Frey, I. ; Schölmerich, J. ; Falk, W. ; Menzel, K. ; Fried, M. ; Herfarth, H. ; Rogler, G./ (GT)n Dinucleotide repeat polymorphism of haem oxygenase-1 promotor region is not associated with inflammatory bowel disease risk or disease course. In: Clinical and Experimental Immunology. 2008 ; Vol. 153, No. 1. pp. 81-85
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