The Associations Between Vitamin D Receptor BsmI and ApaI Polymorphisms and Obesity in Korean Patients with Type 2 Diabetes Mellitus

Sang Won Nam,1 Jinwoo Choi,1 Hyun Jeong Jeon,2 Tae Keun Oh,2 Dong-Hwa Lee1 1Department of Internal Medicine, Chungbuk National University Hospital, Cheongju, South Korea; 2Department of Internal Medicine, Chungbuk National University College of Medicine, Cheongju, South KoreaCorrespondence: Dong-Hwa...

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Main Authors: Nam SW, Choi J, Jeon HJ, Oh TK, Lee DH
Format: Article
Language:English
Published: Dove Medical Press 2021-02-01
Series:Diabetes, Metabolic Syndrome and Obesity
Subjects:
Online Access:https://www.dovepress.com/the-associations-between-vitamin-d-receptor-bsmi-and-apai-polymorphism-peer-reviewed-article-DMSO
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author Nam SW
Choi J
Jeon HJ
Oh TK
Lee DH
author_facet Nam SW
Choi J
Jeon HJ
Oh TK
Lee DH
author_sort Nam SW
collection DOAJ
description Sang Won Nam,1 Jinwoo Choi,1 Hyun Jeong Jeon,2 Tae Keun Oh,2 Dong-Hwa Lee1 1Department of Internal Medicine, Chungbuk National University Hospital, Cheongju, South Korea; 2Department of Internal Medicine, Chungbuk National University College of Medicine, Cheongju, South KoreaCorrespondence: Dong-Hwa LeeDepartment of Internal Medicine, Chungbuk National University Hospital, 776, 1sunhwan-Ro, Seowon-Gu, Cheongju-si, Chungcheongbuk-do, 28644, South KoreaTel +82-43-269-7504Fax +82-43-273-3252Email roroko@hanmail.netBackground: Vitamin D receptor (VDR) polymorphisms are associated with osteoporosis, diabetes, immunological diseases, and cancers. However, the association of obesity with VDR polymorphisms has shown inconsistent results, and perhaps it depends upon the characteristics of a population. Therefore, we evaluated the association between BsmI (rs1544410) and ApaI (rs7975232) polymorphisms of VDR and obesity in Korean patients with type 2 diabetes mellitus (T2DM).Methods: A total of 506 patients with T2DM participated in the study. Polymerase chain reaction-restriction fragment length polymorphism was used to analyze BsmI and ApaI polymorphisms; the genotypes were presented as BB, Bb, or bb for BsmI and AA, Aa, or aa for ApaI. Obesity was defined using the body mass index (BMI) with a cutoff level of 25 kg/m2.Results: The prevalence of obesity was higher in patients with the bb genotype than in those with BB or Bb genotypes (48.4% vs 33.9%, P = 0.031). The mean BMI was 25.2 ± 3.5 kg/m2 in patients with bb genotype and 24.1 ± 3.1 kg/m2 in patients with BB or Bb genotypes. Patients with Aa or aa genotypes showed a higher prevalence of obesity than patients with AA genotype (47.6% vs 26.1%, P = 0.043). Glycemic control parameters and lipid profiles did not show significant differences with either polymorphism.Conclusion: To our knowledge, this is the first study to assess the association between VDR polymorphisms and obesity in Korean patients with T2DM. Further studies in larger populations and multiethnic cohorts are needed to validate our findings.Keywords: type 2 diabetes mellitus, obesity, vitamin D, vitamin D receptor gene, polymorphism
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spelling doaj.art-fe818714fa3445f693b4761e2144db362023-02-02T18:45:02ZengDove Medical PressDiabetes, Metabolic Syndrome and Obesity1178-70072021-02-01Volume 1455756461887The Associations Between Vitamin D Receptor BsmI and ApaI Polymorphisms and Obesity in Korean Patients with Type 2 Diabetes MellitusNam SWChoi JJeon HJOh TKLee DHSang Won Nam,1 Jinwoo Choi,1 Hyun Jeong Jeon,2 Tae Keun Oh,2 Dong-Hwa Lee1 1Department of Internal Medicine, Chungbuk National University Hospital, Cheongju, South Korea; 2Department of Internal Medicine, Chungbuk National University College of Medicine, Cheongju, South KoreaCorrespondence: Dong-Hwa LeeDepartment of Internal Medicine, Chungbuk National University Hospital, 776, 1sunhwan-Ro, Seowon-Gu, Cheongju-si, Chungcheongbuk-do, 28644, South KoreaTel +82-43-269-7504Fax +82-43-273-3252Email roroko@hanmail.netBackground: Vitamin D receptor (VDR) polymorphisms are associated with osteoporosis, diabetes, immunological diseases, and cancers. However, the association of obesity with VDR polymorphisms has shown inconsistent results, and perhaps it depends upon the characteristics of a population. Therefore, we evaluated the association between BsmI (rs1544410) and ApaI (rs7975232) polymorphisms of VDR and obesity in Korean patients with type 2 diabetes mellitus (T2DM).Methods: A total of 506 patients with T2DM participated in the study. Polymerase chain reaction-restriction fragment length polymorphism was used to analyze BsmI and ApaI polymorphisms; the genotypes were presented as BB, Bb, or bb for BsmI and AA, Aa, or aa for ApaI. Obesity was defined using the body mass index (BMI) with a cutoff level of 25 kg/m2.Results: The prevalence of obesity was higher in patients with the bb genotype than in those with BB or Bb genotypes (48.4% vs 33.9%, P = 0.031). The mean BMI was 25.2 ± 3.5 kg/m2 in patients with bb genotype and 24.1 ± 3.1 kg/m2 in patients with BB or Bb genotypes. Patients with Aa or aa genotypes showed a higher prevalence of obesity than patients with AA genotype (47.6% vs 26.1%, P = 0.043). Glycemic control parameters and lipid profiles did not show significant differences with either polymorphism.Conclusion: To our knowledge, this is the first study to assess the association between VDR polymorphisms and obesity in Korean patients with T2DM. Further studies in larger populations and multiethnic cohorts are needed to validate our findings.Keywords: type 2 diabetes mellitus, obesity, vitamin D, vitamin D receptor gene, polymorphismhttps://www.dovepress.com/the-associations-between-vitamin-d-receptor-bsmi-and-apai-polymorphism-peer-reviewed-article-DMSOtype 2 diabetes mellitusobesityvitamin dvitamin d receptor genepolymorphism
spellingShingle Nam SW
Choi J
Jeon HJ
Oh TK
Lee DH
The Associations Between Vitamin D Receptor BsmI and ApaI Polymorphisms and Obesity in Korean Patients with Type 2 Diabetes Mellitus
Diabetes, Metabolic Syndrome and Obesity
type 2 diabetes mellitus
obesity
vitamin d
vitamin d receptor gene
polymorphism
title The Associations Between Vitamin D Receptor BsmI and ApaI Polymorphisms and Obesity in Korean Patients with Type 2 Diabetes Mellitus
title_full The Associations Between Vitamin D Receptor BsmI and ApaI Polymorphisms and Obesity in Korean Patients with Type 2 Diabetes Mellitus
title_fullStr The Associations Between Vitamin D Receptor BsmI and ApaI Polymorphisms and Obesity in Korean Patients with Type 2 Diabetes Mellitus
title_full_unstemmed The Associations Between Vitamin D Receptor BsmI and ApaI Polymorphisms and Obesity in Korean Patients with Type 2 Diabetes Mellitus
title_short The Associations Between Vitamin D Receptor BsmI and ApaI Polymorphisms and Obesity in Korean Patients with Type 2 Diabetes Mellitus
title_sort associations between vitamin d receptor bsmi and apai polymorphisms and obesity in korean patients with type 2 diabetes mellitus
topic type 2 diabetes mellitus
obesity
vitamin d
vitamin d receptor gene
polymorphism
url https://www.dovepress.com/the-associations-between-vitamin-d-receptor-bsmi-and-apai-polymorphism-peer-reviewed-article-DMSO
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