Bojan Kujundzic1, Katarina Zeljic2,3, Gordana Supic4,5, Marko Magic6, Dragan Stanimirovic6, Vesna Ilic4, Barbara Jovanovic4, Zvonko Magic4,5. 1. Department of Dentistry-Oral Surgery, Faculty of Medicine, University of East Sarajevo, Foca, Bosnia and Herzegovina. 2. Institute for Medical Research, Military Medical Academy, Crnotravska 17, Belgrade, 11002, Serbia. katjaze@yahoo.com. 3. Faculty of Biology, University of Belgrade, Studentski Trg 3, Belgrade, 11000, Serbia. katjaze@yahoo.com. 4. Institute for Medical Research, Military Medical Academy, Crnotravska 17, Belgrade, 11002, Serbia. 5. Faculty of Medicine, Military Medical Academy, University of Defense, Belgrade, Serbia. 6. School of Dental Medicine, Clinic of Periodontology and Oral Medicine, University of Belgrade, Belgrade, Serbia.
Abstract
OBJECTIVES: The current study investigated the association between VDR EcoRV (rs4516035), FokI (rs2228570), ApaI (rs7975232) and TaqI (rs731236), CYP27B1 (rs4646536), CYP24A1 (rs2296241), and MTHFR (rs1801133) gene polymorphisms and risk of oral lichen planus (OLP) occurrence. MATERIALS AND METHODS: The study group consisted of 65 oral lichen planus patients and 100 healthy blood donors in the control group. Single nucleotide polymorphisms were genotyped by real time PCR or PCR-restriction fragment length polymorphism (RFLP) method. RESULTS: Heterozygous as well as mutated genotype of vitamin D receptor (VDR) FokI (rs2228570) polymorphism was associated with increased oral lichen planus risk in comparison with wild type genotype (odds ratio (OR) = 3.877, p = 0.017, OR = 38.153, p = 0.001, respectively). A significantly decreased OLP risk was observed for heterozygous genotype of rs2296241 polymorphism in CYP24A1 gene compared with the wild type form (OR = 0.314, p = 0.012). VDR gene polymorphisms ApaI and TaqI were in linkage disequilibrium (D' = 0.71, r(2) = 0.22). Identified haplotype AT was associated with decreased OLP risk (OR = 0.592, p = 0.047). CONCLUSION: Our results highlight the possible important role of VDR FokI (rs2228570) and CYP24A1 rs2296241 gene polymorphisms for oral lichen planus susceptibility. CLINICAL RELEVANCE: Identification of new molecular biomarkers could potentially contribute to determination of individuals with OLP predisposition.
OBJECTIVES: The current study investigated the association between VDR EcoRV (rs4516035), FokI (rs2228570), ApaI (rs7975232) and TaqI (rs731236), CYP27B1 (rs4646536), CYP24A1 (rs2296241), and MTHFR (rs1801133) gene polymorphisms and risk of oral lichen planus (OLP) occurrence. MATERIALS AND METHODS: The study group consisted of 65 oral lichen planus patients and 100 healthy blood donors in the control group. Single nucleotide polymorphisms were genotyped by real time PCR or PCR-restriction fragment length polymorphism (RFLP) method. RESULTS: Heterozygous as well as mutated genotype of vitamin D receptor (VDR) FokI (rs2228570) polymorphism was associated with increased oral lichen planus risk in comparison with wild type genotype (odds ratio (OR) = 3.877, p = 0.017, OR = 38.153, p = 0.001, respectively). A significantly decreased OLP risk was observed for heterozygous genotype of rs2296241 polymorphism in CYP24A1 gene compared with the wild type form (OR = 0.314, p = 0.012). VDR gene polymorphisms ApaI and TaqI were in linkage disequilibrium (D' = 0.71, r(2) = 0.22). Identified haplotype AT was associated with decreased OLP risk (OR = 0.592, p = 0.047). CONCLUSION: Our results highlight the possible important role of VDR FokI (rs2228570) and CYP24A1rs2296241 gene polymorphisms for oral lichen planus susceptibility. CLINICAL RELEVANCE: Identification of new molecular biomarkers could potentially contribute to determination of individuals with OLP predisposition.
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