Associations of vitamin D receptor gene polymorphisms FokI and BsmI with susceptibility to rheumatoid arthritis and Behcet's disease in Tunisians.

Authors: Karray, EF  Ben Dhifallah, I  Ben Abdelghani, K  Ben Ghorbel, I  Khanfir, M  Houman, H  Hamzaoui, K  Zakraoui, L 
Citation: Karray EF, etal., Joint Bone Spine. 2012 Mar;79(2):144-8. doi: 10.1016/j.jbspin.2011.06.003. Epub 2011 Aug 5.
Pubmed: (View Article at PubMed) PMID:21820934
DOI: Full-text: DOI:10.1016/j.jbspin.2011.06.003

OBJECTIVES: Reports of immunomodulating effects of vitamin D suggest a need for examining allele and genotype frequencies of the vitamin D nuclear receptor gene (VDR) in patients with autoimmune diseases. T-helper-1 (Th1) counts in peripheral blood are increased in both rheumatoid arthritis (RA) and Behcet's disease (BD). We studied VDR polymorphisms in patients with these two diseases in Tunisia. METHODS: In 108 patients with RA, 131 patients with BD, and 152 controls, we studied FokI and BsmI VDR polymorphisms, using the restriction fragment length polymorphism technique. RESULTS: The FokI polymorphism alleles and genotype were significantly more common in the RA group than in the controls (P=0.001 and P=0.005, respectively). The FokI F allele and F/F genotype were significantly associated with BD (P=0.0003 and P=0.002, respectively). Furthermore, in the group with BD, the FokI polymorphism was significantly associated with the presence of vascular manifestations (P=0.006). In patients with RA, the FokI polymorphism was significantly associated with female gender (P=0.003). No significant associations were found between the Bsm1 polymorphism and RA or BD. CONCLUSION: The VDR F allele is associated with RA and BD in Tunisians.


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CRRD Object Information
CRRD ID: 8158077
Created: 2014-02-06
Species: All species
Last Modified: 2014-02-06
Status: ACTIVE


RGD is funded by grant HL64541 from the National Heart, Lung, and Blood Institute on behalf of the NIH.