Journal
GENE
Volume 521, Issue 1, Pages 45-49Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.gene.2013.02.046
Keywords
MTHFR gene; C677T polymorphism; IBD; Moroccan population
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Background: The association of genetic polymorphisms related to metabolism of homocysteine and folate with inflammatory bowel disease has been evidenced. Several studies have identified genetic variants of MTHFR as significant susceptibility loci for Crohn's disease (CD) and ulcerative colitis (UC). The C677T genetic polymorphism in the MTHFR gene is found to be associated with a thermolabile variant enzyme that shows a reduced activity. Therefore, we investigated whether the C677T variant confers genetic susceptibility to CD or UC and evaluated the genotype-phenotype associations in the Moroccan population. Methods: The present study included 96 inflammatory bowel disease patients (68 patients with CD and 28 with UC) and 182 healthy controls. DNA samples were genotyped for the MTHFR (C677T) mutation by the PCR-RFLP method. Statistical analyzes were performed using MedCalc software, Chi square test and Fisher test. Results: The respective odds ratio for CD, UC and control group were, 1.55 (CI 95%: 0.53-4.53, P = 0.52); 0.50 (CI 95%: 0.06-4.15, P = 0.52) and 0.50 (CI 95%: 0.06-4.15, P = 0.52). Thus, no statistically significant association with the disease was observed in frequency of the TT variant in comparison to healthy controls. Stratification of IBD patients on the basis of CD or UC showed that individuals carrying at least one T allele are not protected against Crohn's disease. Furthermore, clinical features of the disease did not show any significant association. Conclusion: In conclusion, the present study indicates that the genetic risk for IBD is not modulated by MTHFR C677T polymorphism in Moroccan population. (c) 2013 Elsevier B.V. All rights reserved.
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