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Year : 2022  |  Volume : 25  |  Issue : 7  |  Page : 1163-1172

The relationship between vitamin D receptor gene polymorphisms and periodontitis in turkish individuals with type 2 diabetes mellitus

1 Department of Periodontology, Institute of Health Sciences, Marmara University, Istanbul, Turkey
2 Department of Biophysics, Institute of Health Sciences, Istanbul, Turkey
3 Department of Biophysics, Faculty of Medicine, Marmara University, Istanbul, Turkey
4 Department of Periodontology, Faculty of Dentistry, Marmara University, Istanbul, Turkey

Correspondence Address:
Prof. B Dogan
Recep Tayyip Erdogan Külliyesi Saglik Yerleskesi, Basibüyük Yolu 9/3 34854 Basibüyük, Maltepe, Istanbul
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/njcp.njcp_1894_21

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Background and Aim: Vitamin D receptor (VDR) gene polymorphisms have been implicated in the pathogenesis of many diseases, such as periodontitis and diabetes mellitus (DM). The present study aimed to evaluate the distributions of VDR polymorphisms in diabetic individuals with healthy periodontium (DMH), diabetic individuals with periodontitis (DMP), nondiabetic individuals with healthy periodontium (H), and nondiabetic individuals with periodontitis (P). Material and Methods: A total of 200 individuals (DMH = 40, DMP = 60, H = 40, and P = 60) were recruited. All clinical periodontal parameters, demographical, and biochemical variables were recorded. Blood samples were collected, and genomic DNA was isolated by Purelink® Genomic DNA Mini Kit. Genotyping of VDR polymorphisms ApaI, BsmI, FokI, and TaqI were determined by real-time polymerase chain reaction (PCR) using allele-specific probes. Results: The distribution of the BsmI variant showed differences between DMH and H groups (P = 0.034). In addition, carrying the GG genotype (OR = 0.317; 95% CI = 0.126–0.797; P = 0.013) and the G allele (OR = 2.373; 95% CI = 1.203–4.681; P = 0.012) increased the risk of type 2 DM. Moreover, it was determined that the frequency of CC genotype of FokI variant was higher in DMP compared to DMH (P = 0.046). It was determined that having the CC genotype (OR = 2.706; 95% CI = 1.185–6.176; P = 0.017) and the C allele (OR = 1.917; 95% CI = 0.995–3.694; P = 0.049) increased the risk of periodontitis among diabetic individuals. No differences were detected among groups in the genotype and allele distributions of ApaI and TaqI variants (P > 0.05). Conclusions: The present study showed that the BsmI variant was a risk factor for DM among periodontally healthy individuals and the FokI variant for periodontitis among diabetic individuals.

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