scholarly journals Vitamin D receptor gene polymorphisms are associated with obesity in type 2 diabetic subjects with early age of onset

2001 ◽  
pp. 181-186 ◽  
Author(s):  
WZ Ye ◽  
AF Reis ◽  
D Dubois-Laforgue ◽  
C Bellanne-Chantelot ◽  
J Timsit ◽  
...  
Keyword(s):  
Vitamin D ◽  
Insulin Secretion ◽  
Vitamin D Receptor ◽  
Age Of Onset ◽  
Major Gene ◽  
Receptor Gene ◽  
Nucleotide Polymorphisms ◽  
Vdr Gene ◽  
Receptor Gene Polymorphisms

OBJECTIVE: Allelic variations in the vitamin D receptor (VDR) gene were reported to modulate insulin secretion in response to glucose. VDR was investigated as a candidate gene for type 2 diabetes mellitus (T2DM). METHOD: Four single nucleotide polymorphisms (SNPs) in intron 8 (BsmI, Tru9I, ApaI) and exon 9 (TaqI) of the VDR gene were examined in 309 unrelated French subjects with T2DM and 143 controls. RESULTS: The distribution of alleles and genotypes of the four SNPs was similar in patients and controls. However, in patients whose age at diagnosis of diabetes was < or =45 years, homozygous subjects for the T-allele of the TaqI SNP had a higher body mass index (BMI) (31.7+/-6.7 kg/m2, P=0.0058) and an increased prevalence of obesity (81%, P=0.005) with respect to heterozygous subjects (27.9+/-5.0 kg/m2; 46%) or homozygous subjects for the t-allele (27.7+/-5.0 kg/m2; 52%). Similar results were observed for homozygous subjects for the b-allele of the BsmI SNP. Logistic regression analysis demonstrated that TT homozygosity was independently associated with obesity in these subjects (odds ratio, 4.64; 95% confidence interval (CI), 1.64-14.76; P=0.0056). CONCLUSION: VDR is not a major gene for T2DM in French Caucasians. However, polymorphisms in the VDR gene are associated with the susceptibility to obesity in subjects with early-onset T2DM. The pathophysiological mechanisms of these associations remain unexplained, but they could be related to a direct effect of vitamin D in adypocyte differentiation and metabolism, or to an indirect effect by modulation of insulin secretion.

scholarly journals Association of Vitamin D deficiency and Vitamin D Receptor Gene Polymorphisms with Type 2 diabetes mellitus Saudi patients

1970 ◽  
Vol 19 (4) ◽  
pp. 2812-2818
Author(s):  
Ayman S Al-Hazmi
Keyword(s):  
Diabetes Mellitus ◽  
Type 2 Diabetes ◽  
Vitamin D ◽  
Vitamin D Receptor ◽  
Gene Polymorphisms ◽  
Receptor Gene ◽  
Vitamin D Receptor Gene ◽  
Receptor Gene Polymorphisms ◽  
25 Oh Vitamin D

Background: Type 2 diabetes mellitus (T2DM) is a global problem. Association of multiple genes in T2DM becomes a hot point recently. This study was aimed to evaluate association of vitamin D receptor gene polymorphisms with susceptibility to T2DM. Subjects and methods: One hundred T2DM Saudi male patients were included in this study and one hundred healthy Saudi men were used as control. For each individual, fasting blood glucose, cholesterol, HDL-C, LDL-C, HbA1c, insulin and 25-(OH) vitamin D were measured. In addition, Apal, BsmI and TaqI genotypes were performed for each subject. Data was analyzed by SPSS version 16, using Spearman's rho and ANOVA tests. Results: There was significant inverse correlation between 25-(OH) vitamin D level and T2DM (p<0.01). HbA1c was inversely correlated with 25-(OH) vitamin D level (P<0.05). Genotype study showed that tt of TaqI genotype was higher in T2DM group compared with control group (p<0.05). Moreover, tt genotype has higher HbA1c than both TT and Tt genotypes (p<0.05). Conclusion: An association was confirmed between TaqI genotypes and T2DM but there is no correlation between BsmI, ApaI and T2DM. In addition, HbA1c is positively correlated with tt genotype of TaqI.Keywords: Vitamin D receptor, diabetes type 2, polymorphism.

Vitamin D receptor gene polymorphisms among Emirati patients with type 2 diabetes mellitus

2018 ◽  
Vol 175 ◽  
pp. 119-124 ◽  
Author(s):  
Habiba Al Safar ◽  
Sarah El Hajj Chehadeh ◽  
Laila Abdel-Wareth ◽  
Afrozul Haq ◽  
Herbert F. Jelinek ◽  
...  
Keyword(s):  
Diabetes Mellitus ◽  
Type 2 Diabetes ◽  
Vitamin D ◽  
Type 2 Diabetes Mellitus ◽  
Vitamin D Receptor ◽  
Gene Polymorphisms ◽  
Receptor Gene ◽  
Vitamin D Receptor Gene ◽  
Receptor Gene Polymorphisms

scholarly journals Vitamin D Receptor Gene Polymorphisms and HLA DRB1*04 Cosegregation in Saudi Type 2 Diabetes Patients

2012 ◽  
Vol 188 (3) ◽  
pp. 1325-1332 ◽  
Author(s):  
Nasser M. Al-Daghri ◽  
Omar Al-Attas ◽  
Majed S. Alokail ◽  
Khalid M. Alkharfy ◽  
Hossam M. Draz ◽  
...  
Keyword(s):  
Type 2 Diabetes ◽  
Vitamin D ◽  
Vitamin D Receptor ◽  
Gene Polymorphisms ◽  
Receptor Gene ◽  
Vitamin D Receptor Gene ◽  
Receptor Gene Polymorphisms ◽  
Diabetes Patients

scholarly journals Association of the polymorphism of the vitamin D receptor gene (VDR) with the risk of leprosy in the Brazilian Amazon

2021 ◽  
Author(s):  
Jasna Letícia Pinto Paz ◽  
Maria do Perpétuo Socorro Corrêa Amador Silvestre ◽  
Letícia Siqueira Moura ◽  
Ismari Perini Furlaneto ◽  
Yan Corrêa Rodrigues ◽  
...  
Keyword(s):  
Vitamin D ◽  
Vitamin D Receptor ◽  
Genetic Factors ◽  
Receptor Gene ◽  
Mycobacterium Leprae ◽  
Nucleotide Polymorphisms ◽  
Vdr Gene ◽  
Single Nucleotide ◽  
The Relationship

The transmission and evolution of leprosy depends on several aspects, including immunological and genetic factors of the host, as well as genetic factors of Mycobacterium leprae. This study evaluated the association of single nucleotide polymorphisms (SNPs) on the FokI (rs2228570), TaqI (rs731236), ApaI (rs7975232) regions of the vitamin D receptor (VDR) gene with leprosy. A total of 405 individuals were evaluated, composed by groups of 100 multibacillary and 57 paucibacillary patients, and 248 healthy contacts. Blood samples were collected from patients and contacts. The genotyping was performed by sequencing of the interest regions. The alleles of the studied SNPs, and of SNP FokI genotypes, were not associated with leprosy. For the SNP on TaqI region, the relationship between the tt genotype, and for the SNP ApaI, the AA genotype, revealed an association with susceptibility to MB form, while Aa genotype with protection. The extended genotypes AaTT and AaTt of ApaI and TaqI were associated with protection to against MB form. Futher studies analyzing the expression of the VDR gene and the correlation with its SNPs might help to clarify the role of polymorphisms on the immune response in leprosy.

Vitamin D Receptor Gene Polymorphisms, Metabolic Syndrome, and Type 2 Diabetes in Iranian Subjects: No Association with Observed SNPs

2016 ◽  
Vol 86 (1-2) ◽  
pp. 71-80 ◽  
Author(s):  
Sakineh Shab-Bidar ◽  
Tirang R. Neyestani ◽  
Abolghassem Djazayery
Keyword(s):  
Type 2 Diabetes ◽  
Metabolic Syndrome ◽  
Vitamin D ◽  
Vitamin D Receptor ◽  
Gene Polymorphisms ◽  
Receptor Gene ◽  
Vitamin D Receptor Gene ◽  
Single Nucleotide ◽  
Receptor Gene Polymorphisms

Abstract.Objective: This study aimed to investigate the associations between metabolic syndrome and type 2 diabetes and the presence of single nucleotide polymorphism of the vitamin D receptor gene in Iranian subjects with type 2 diabetes. Subjects and methods: Overall, 730 Iranian subjects (372 patients and 358 controls) were enrolled in this case-control study. Single nucleotide polymorphisms of the vitamin D receptor gene (FokI, BsmI, ApaI, and TaqI) were genotyped using the restriction fragment length polymorphism method. The statistical difference in genotype distribution among the groups was assessed by χ2 test. Logistic regression was performed to calculate odds ratios for the association of the genotype frequencies in different groups with the risk of metabolic syndrome and type 2 diabetes. Results: The most common genotypes for BsmI, ApaI, TaqI, and FokI were Bb, Aa, TT, and FF, respectively. Adjusted χ2 test revealed that there was no difference between the groups in the genotypes frequencies of 4 vitamin D receptor polymorphisms in type 2 diabetes subjects. On the other hand, type 2 diabetes subjects with Tt genotype presented a signifi cantly higher fasting blood glucose than those with TT and tt genotypes in TaqI polymorphisms (p = 0.009). Logistic regression showed no association between metabolic syndrome risk and vitamin D receptor genotypes. Conclusion: We found no evidence for the association between vitamin D receptor gene polymorphisms and the risk for type 2 diabetes and metabolic syndrome in Iranian subjects. Further examinations using genome-wide association in large prospective cohort studies are warranted.

Vitamin D receptor gene polymorphisms influence insulin secretion in Bangladeshi Asians

Diabetes ◽  
1998 ◽  
Vol 47 (4) ◽  
pp. 688-690 ◽  
Author(s):  
G. A. Hitman ◽  
N. Mannan ◽  
M. F. McDermott ◽  
E. Aganna ◽  
B. W. Ogunkolade ◽  
...  
Keyword(s):  
Vitamin D ◽  
Insulin Secretion ◽  
Vitamin D Receptor ◽  
Gene Polymorphisms ◽  
Receptor Gene ◽  
Vitamin D Receptor Gene ◽  
Receptor Gene Polymorphisms

scholarly journals P028 The Apa I polymorphism in the Vitamin D receptor gene is associated with a stricturing behaviour in Crohn′s disease patients

2021 ◽  
Vol 15 (Supplement_1) ◽  
pp. S143-S145
Author(s):  
L Gisbert-Ferrandiz ◽  
J Llau ◽  
J Cosin-Roger ◽  
S Coll ◽  
C Bauset ◽  
...  
Keyword(s):  
Vitamin D ◽  
Vitamin D Receptor ◽  
Risk Allele ◽  
Statistical Significance ◽  
Receptor Gene ◽  
Strong Linkage Disequilibrium ◽  
Nucleotide Polymorphisms ◽  
Vdr Gene ◽  
Chi Squared ◽  
Nuclear Receptor Family

Abstract Background Vitamin D receptor (VDR) is a member of the nuclear receptor family of transcription factors that plays an immunomodulatory role in the gastrointestinal tract through binding Vitamin D. Single-nucleotide polymorphisms (SNPs) in the VDR gene have been related to inflammatory bowel disease. Indeed, Crohn′s disease (CD) patients carrying the Taq I polymorphism in VDR gene run a higher risk of developing a penetrating behaviour. We analyse here the association between the VDR SNPs Taq I, Bsm I, Apa I and Fok I and the clinical characteristics of CD. Methods DNA was extracted from blood samples from 80 patients diagnosed with CD from the Hospital of Manises (Valencia). Four polymorphisms identified in the VDR gene (Bsm I, Fok I, Apa I and Taq I) were genotyped using PCR-RFLP. Clinical data for each patient, including the Montreal classification was collected. Statistical significance was done using contingency tables and measured by Chi-squared or Fisher test. Results Results reveal a strong linkage disequilibrium between Apa I, Bsm I and Taq I polymorphisms. Apa I appears next to Bsm I and it is negatively associated with Taq I. The presence of at least a risk allele for Apa I is significantly associated with a stricturing behaviour in CD patients (P=0.014, Table 1), while the ancestral genotype (WT) of Apa I was significantly associated with a penetrating behaviour (P=0.062, Table 2). Finally, the presence of the risk genotype of Apa I is associated with a non-colonic location of the disease (P=0.059, Table 3). Fok I was not significantly associated with any of the parameters analysed. Conclusion Our results in CD patients reveal that the presence of the risk allele of Apa I in the VDR genotype is associated with a stricturing behaviour and tends towards a non-colonic location of the disease. This suggests that the analysis of this polymorphism may be useful for clinicians as a prognostic factor.

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