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Fu Y, Lu M, Zhang K, Sun Y, Tan X, Wang N, Xu F, Jiang B, Lu Y, Wang B. Vitamin D status, vitamin D receptor polymorphisms, and risk of type 2 diabetes: A prospective cohort study. J Clin Endocrinol Metab 2024:dgae221. [PMID: 38571313 DOI: 10.1210/clinem/dgae221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 03/25/2024] [Accepted: 04/03/2024] [Indexed: 04/05/2024]
Abstract
CONTEXT Vitamin D status has been associated with risk of type 2 diabetes (T2D), but evidence is scarce regarding whether such relation differs by glycemic status. OBJECTIVE To prospectively investigate the association between serum 25-hydroxyvitamin D [25(OH)D] and risk of incident T2D across the glycemic spectrum and the modification effect of genetic variants in vitamin D receptor (VDR). METHODS This prospective study included 379,699 participants without T2D at baseline from the UK Biobank. Analyses were performed according to glycemic status and HbA1c levels. Cox proportional hazard models were used to calculate hazard ratios (HRs) and 95% CIs. RESULTS During a median of 14.1 years of follow-up, 6,315 participants with normoglycemia and 9,085 prediabetes patients developed T2D. Compared to individuals with 25(OH)D <25 nmol/L, the multivariable-adjusted hazard ratios (95% CIs) of incident T2D for those with 25(OH)D ≥75 nmol/L was 0.62 (0.56, 0.70) among the normoglycemia and 0.64 (0.58, 0.70) among the prediabetes. A significant interaction was observed between 25(OH)D and VDR polymorphisms among participants with prediabetes (Pinteraction=0.017), whereby the reduced HR of T2D associated with higher 25(OH)D was more prominent in those carrying T allele of rs1544410. Triglycerides levels mediated 26% and 34% of the association between serum 25(OH)D and incident T2D among participants with normoglycemia and prediabetes. CONCLUSIONS Higher serum 25(OH)D concentrations were associated with lower T2D risk across the glycemic spectrum below the threshold for diabetes, and the relations in prediabetes were modified by VDR polymorphisms. Improving lipid profile, mainly triglycerides, accounted for part of the favorable associations.
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Affiliation(s)
- Yanqi Fu
- Department of Endocrinology and Metabolism, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Meng Lu
- Research Center for Clinical Medicine, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Kun Zhang
- Department of Endocrinology and Metabolism, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ying Sun
- Department of Endocrinology and Metabolism, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiao Tan
- Department of Medical Sciences, Uppsala University, Uppsala, Sweden
- Department of Big Data in Health Science, School of Public Health, Zhejiang University School of Medicine, Hangzhou, China
| | - Ningjian Wang
- Department of Endocrinology and Metabolism, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Fei Xu
- iHuman Institute, School of Life Science and Technology, Shanghai Tech University, Shanghai, China
| | - Boren Jiang
- Department of Endocrinology and Metabolism, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yingli Lu
- Department of Endocrinology and Metabolism, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Bin Wang
- Department of Endocrinology and Metabolism, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Al-Hadithy BE, Salih BO, Anber ZNH, Al-Hadad NS. Evaluation of normal range of serum 25 hydroxyvitamin d in iraqi healthy adults: demographic and socioeconomic effects. POLSKI MERKURIUSZ LEKARSKI : ORGAN POLSKIEGO TOWARZYSTWA LEKARSKIEGO 2024; 52:208-215. [PMID: 38642357 DOI: 10.36740/merkur202402110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/22/2024]
Abstract
OBJECTIVE Aim: To determine the normal range of serum levels of total 25(OH)VD in Iraqi healthy adult subjects and to relate its level with demographic profile and socioeconomic status.. PATIENTS AND METHODS Materials and Methods: This cross sectional study was carried out at Iraq and the samples were collected during the period from August 2019 to January 2020. It included 649 adult subjects apparently healthy, from three governorates (Baghdad, Al-Anbar and Al-Basrah), Investigations included serum measurement of total 25(OH)D in all included individuals by using ELISA technique. Age, gender, marital state, blood pressure, smoking, sunshine exposure (%), hours of exposure/day, percentage of body surface area exposed, body mass index (BMI) subgroups, waist circumference (WC) subgroups, diet type, sport type and time, geographic factor (governorate) were measured and / or calculated and the levels of 25(OH)D were studied according to each of these factors. RESULTS Results: The mean ± SD level of 25(OH)D in total (n=649) studied Iraqi subjects was (16.29 ± 8.22 ng/ml), with women were significantly deficient than men (15.76 ± 6.89 ng/ml, 17.14 ± 6.85 ng/ml; p < 0.01 respectively). However, there was no significant differences in mean values of serum 25(OH)D levels among studied governorates, subgroups of BMI, WC, marital status, smokers and nonsmoker and subgroups of age. The mean value of serum 25(OH)D was found to be decreased in January, October and November as well as according to diet and sport types. There was significant positive correlation between total 25(OH)D and sun exposed surface area, sun exposure duration and with sun exposure area. CONCLUSION Conclusions: The mean (±SD) value of serum total 25(OH)D in Iraqi healthy subjects was 16.29 ng/ml (±8.22) reflecting the actual body status of this vitamin with lower concentration in women than in men. Type and time of sport and diet type were the major vitamin D dependent factors.
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Konečná M, Poráčová J, Nagy M, Majherová M, Gaľová J, Gogaľová Z, Vašková H, Mydlárová Blaščáková M, Gruľová D, Sedlák V. Level of biochemical parameters in patients with type 2 diabetes mellitus depending on the genotype of the FokI polymorphism in the vitamin D3 receptor (VDR gene). Cent Eur J Public Health 2023; 31:S69-S74. [PMID: 38272481 DOI: 10.21101/cejph.a7837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Accepted: 10/11/2023] [Indexed: 01/27/2024]
Abstract
OBJECTIVES Diabetes mellitus type 2 (T2DM) is a multifactorial and polygenic disorder characterised by chronic hyperglycaemia accompanied by impaired lipid, carbohydrate, and protein metabolism. The disease is associated with several genetic polymorphisms, including the FokI polymorphism in the vitamin D receptor (VDR) gene. METHODS We conducted a study of 327 probands (191 T2DM patients, 136 controls), with a mean age 65.06 (SD ± 10.88) years of patients with T2DM and 58.89 (SD ± 6.59) years in the healthy probands. We investigated the association between FokI polymorphism and biochemical parameters in T2DM patients in the Slovak population. Anthropometric measurements, biochemical, and genetic analysis were statistically evaluated by Statistica ver.13 software using t-tests. RESULTS Biochemical analysis confirmed significantly higher mean values of total cholesterol (TC), triglyceride (TG), glucose (GLU), and uric acid (UA) (p < 0.001) in T2DM probands and statistically significantly lower values of high-density lipoprotein (HDL), cholesterol and vitamin D (p < 0.001). Allele frequencies and genotype distributions of the FokI (rs2228570) polymorphism were not significantly different between T2DM patients and controls (p = 0.909). Patients with T2DM and TT genotype had the highest glucose level of 11.39 (SD ± 2.32) uU/ml (p < 0.001). CONCLUSION Our study did not provide evidence for an association of the investigated FokI polymorphism of the VDR gene with T2DM in the Slovak population. Further research is needed to evaluate the impact of single nucleotide polymorphisms (SNPs) in the VDR gene, focusing on related genetic analyses in a larger T2DM cohort.
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Affiliation(s)
- Mária Konečná
- Department of Biology, Faculty of Humanities and Natural Sciences, University of Presov, Presov, Slovak Republic
| | - Janka Poráčová
- Department of Biology, Faculty of Humanities and Natural Sciences, University of Presov, Presov, Slovak Republic
| | - Melinda Nagy
- Department of Biology, Faculty of Education, J. Selye University, Komarno, Slovak Republic
| | - Mária Majherová
- Department of Physics, Mathematics and Technics, Faculty of Humanities and Natural Sciences, University of Presov, Presov, Slovak Republic
| | - Jana Gaľová
- Department of Biology, Faculty of Humanities and Natural Sciences, University of Presov, Presov, Slovak Republic
| | - Zuzana Gogaľová
- Department of Fluid Phase Separations, Institute of Analytical Chemistry, Czech Academy of Sciences, Brno, Czech Republic
| | - Hedviga Vašková
- Department of Biology, Faculty of Humanities and Natural Sciences, University of Presov, Presov, Slovak Republic
| | - Marta Mydlárová Blaščáková
- Department of Biology, Faculty of Humanities and Natural Sciences, University of Presov, Presov, Slovak Republic
| | - Daniela Gruľová
- Department of Ecology, Faculty of Humanities and Natural Sciences, University of Presov, Presov, Slovak Republic
| | - Vincent Sedlák
- Department of Biology, Faculty of Humanities and Natural Sciences, University of Presov, Presov, Slovak Republic
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Gariballa S, Al-Bluwi GSM, Yasin J. Frequency of Vitamin D Receptor Gene Polymorphisms in a Population with a very High Prevalence of Vitamin D Deficiency, Obesity, Diabetes and Hypertension. Biomedicines 2023; 11:biomedicines11041202. [PMID: 37189820 DOI: 10.3390/biomedicines11041202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 04/03/2023] [Accepted: 04/04/2023] [Indexed: 05/17/2023] Open
Abstract
BACKGROUND Although vitamin D levels and underlying vitamin D receptor (VDR) genetic polymorphisms have been linked to many common diseases including obesity, the association remains unclear. There is also co-existence of pathologically high proportions of obesity and vitamin D deficiency conditions in our UAE society. We therefore aimed to determine the genotypes and allele percentage frequency distribution of four polymorphisms-FokI, BsmI, ApaI and TaqI-in the VDR gene in healthy Emirati individuals and their association with vitamin D levels and chronic conditions including diabetes mellitus, hypertension and obesity. METHODS 277 participants who were part of a randomized controlled trial had their assessment that included clinical and anthropometric data. Whole blood samples were taken for measurements of vitamin D [25(OH) D], four vitamin D receptor gene polymorphism SNPs, including BsmI, FokI, TaqI and ApaI, metabolic and inflammatory markers and related biochemical variables. Multiple logistic regression analysis was used to assess the influence of vitamin D receptor gene SNPs on vitamin D status after adjusting for clinical parameters known to influence vitamin D status in the study population. RESULTS Overall, 277 participants with a mean (±SD) age of 41 ± 12, 204 (74%) of them being female, were included in the study. There were statistically significant differences in vitamin D concentrations between different genotypes of the four VDR gene polymorphisms (p < 0.05). There were, however, no statistically significant differences in vitamin D concentrations between subjects with and those without the four VDR gene polymorphisms genotype and alleles except for AA and AG and allele G in Apal SNP (p < 0.05). Multivariate analysis revealed no significant independent associations between vitamin D status and the four VDR gene polymorphisms after adjusting for dietary intake, physical activity, sun exposure, smoking and body mass index. In addition, no significant differences were found in the frequency of the genotypes and alleles of the four VDR genes among patients with obesity, diabetes and hypertension compared to those without these medical conditions. CONCLUSIONS Although we found statistically significant differences in vitamin concentrations between different genotypes of the four VDR gene polymorphisms, multivariate analysis revealed no association after adjusting for clinical parameters known to influence vitamin D status. Furthermore, no association was found between obesity and related pathologies and the four VDR gene polymorphisms.
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Affiliation(s)
- Salah Gariballa
- Internal Medicine, College of Medicine and Health Sciences, United Arab Emirates University, Al-Ain P.O. Box 15551, United Arab Emirates
| | - Ghada S M Al-Bluwi
- Internal Medicine, College of Medicine and Health Sciences, United Arab Emirates University, Al-Ain P.O. Box 15551, United Arab Emirates
| | - Javed Yasin
- Internal Medicine, College of Medicine and Health Sciences, United Arab Emirates University, Al-Ain P.O. Box 15551, United Arab Emirates
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Mohammed AA, El-Matty DMA, Abdel-Azeem R, Raafat K, Hussein MA, El-Ansary AR, Hafez W, Hassan HA, Nassar NA, Selim NM, Ghaith D, Kholy AAE, Abd El Salam SM, Anouti FA, Wahba AS. Allelic Discrimination of Vitamin D Receptor Polymorphisms and Risk of Type 2 Diabetes Mellitus: A Case-Controlled Study. Healthcare (Basel) 2023; 11:healthcare11040485. [PMID: 36833019 PMCID: PMC9956945 DOI: 10.3390/healthcare11040485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 02/02/2023] [Accepted: 02/02/2023] [Indexed: 02/10/2023] Open
Abstract
(1) Background: Type 2 diabetes mellitus (T2DM) is one of the rapidly growing healthcare problems, and several vitamin D receptor (VDR) polymorphisms seem to modulate the risk of T2DM. Our research was designed to investigate the allelic discrimination of VDR polymorphisms and T2DM occurrence risk. (2) Methods: This case-control research included 156 patients with T2DM and 145 healthy control subjects. Most of the study population were males 56.6% vs. 62.8% in the case and control groups, respectively. Genotyping for VDR single nucleotide polymorphisms (SNPs), rs228570 (Fok1), rs7975232 (Apa1), and rs1544410 (Bsm1) was compared between both groups. (3) Results: There was a negative link between vitamin D levels and insulin sensitivity. A significant difference was noted in the allelic discrimination of VDR polymorphism rs228570 and rs1544410 between the study groups (p < 0.001). No difference was observed in the allelic discrimination of VDR polymorphism rs7975232 between the groups (p = 0.063). Moreover, T2DM patients had significantly higher levels of fasting blood sugar (FBS), glycated hemoglobin HbA1c, 2-h post-prandial blood sugar (PP), serum glutamic oxaloacetic transaminase (SGOT), serum glutamic-pyruvic transaminase (SGPT), total cholesterol, and triglycerides (p < 0.001), while High-Density Lipoprotein (HDL) Cholesterol (HDL-C) was significantly decreased (p = 0.006). (4) Conclusions: VDR polymorphisms had a positive association with T2DM risk among the Egyptian population. Further large-scale research using deep sequencing of samples is strongly urged to investigate different vitamin D gene variants and interactions, as well as the influence of vitamin D on T2DM.
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Affiliation(s)
- Amal Ahmed Mohammed
- Department of Biochemistry and Molecular Biology, National Hepatology and Tropical Medicine Research Institute (NHTMRI), Cairo 11796, Egypt
| | - Dina M. Abo El-Matty
- Department of Biochemistry, Faculty of Pharmacy, Suez Canal University, Ismailia 41522, Egypt
| | - Rola Abdel-Azeem
- Department of Biochemistry, Faculty of Pharmacy, Suez Canal University, Ismailia 41522, Egypt
| | - Khaled Raafat
- Department of Internal Medicine, Faculty of Medicine, Ain Shams University, Cairo11566, Egypt
| | - Mona A. Hussein
- Department of Internal Medicine, National Institute of Diabetes and Endocrinology, Cairo 11562, Egypt
| | - Amira R. El-Ansary
- Department of Internal Medicine, Faculty of Medicine, Misr University for Science and Technology, Giza 12577, Egypt
| | - Wael Hafez
- Department of Internal Medicine, The National Research Centre, Cairo 12622, Egypt
- Correspondence: or ; Tel.: +20-9712235000
| | - Hatem Ahmed Hassan
- Department of Internal Medicine and Gastroenterology, Faculty of Medicine, Minia University, Minia 61519, Egypt
| | | | - Nora Mahmoud Selim
- Department of Clinical and Chemical Pathology Department, Faculty of Medicine, Cairo University, Cairo 12613, Egypt
| | - Doaa Ghaith
- Department of Clinical and Chemical Pathology Department, Faculty of Medicine, Cairo University, Cairo 12613, Egypt
| | - Amal A. El Kholy
- Department of Clinical Pharmacy, Faculty of Pharmacy, Ain Shams University, Cairo 11566, Egypt
| | - Soha M. Abd El Salam
- Department of Medical Microbiology and Immunology, Faculty of Medicine, Suez University, Suez 43512, Egypt
| | - Fatme Al Anouti
- Department of Health Sciences, College of Natural and Health Sciences, Zayed University, Abu Dhabi 144534, United Arab Emirates
| | - Alaa S. Wahba
- Department of Biochemistry, Faculty of Pharmacy, Suez Canal University, Ismailia 41522, Egypt
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Alfaqih MA, Araidah A, Amarin Z, Saadeh R, Al-shboul O, Khanfar M, Allouh MZ. Association of vitamin D levels and polymorphisms in vitamin D receptor with type 2 diabetes mellitus. Biomed Rep 2022; 18:3. [PMID: 36544850 PMCID: PMC9755923 DOI: 10.3892/br.2022.1585] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Accepted: 10/26/2022] [Indexed: 11/18/2022] Open
Abstract
Type 2 diabetes mellitus (T2DM) is a leading cause of death. The prevalence of T2DM in countries of the Middle East and North Africa (MENA) region, including Jordan, is among the highest worldwide. The reason(s) behind the epidemic nature of T2DM in Jordan are unknown but warrant further exploration. Studies have indicated that T2DM could be influenced by diet and/or genetic background. Evidence suggests that numerous patients with T2DM are deficient in vitamin D. The activity of vitamin D on its target tissues may be influenced by single nucleotide polymorphisms (SNPs) in the vitamin D receptor (VDR) gene. It was therefore hypothesized that SNPs in VDR could modify the risk of T2DM. To test this hypothesis, 125 patients with T2DM were recruited along with 125 controls. The study subjects were genotyped for variations in rs2228570, rs1544410, rs7975232, and rs731236 SNPs in the VDR. The levels of 25-hydroxyvitamin D [25(OH)D] were measured from the serum. The analysis revealed that reduced 25(OH)D and age were associated with the risk of T2DM (P<0.05). Moreover, under a dominant inheritance model, the GG genotype of rs2228570 was revealed to increase the risk of T2DM in univariate and multivariate analysis (P<0.05). Additionally, a chromosomal block containing the GAAG haplotype of VDR SNPs increased the risk of T2DM (OR=1.909; CI: 1.260-2.891; P=0.0021). Collectively, the present study revealed that low levels of serum 25(OH)D and rs2228570 of the VDR gene are associated with the risk of T2DM.
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Affiliation(s)
- Mahmoud A. Alfaqih
- Department of Physiology and Biochemistry, Faculty of Medicine, Jordan University of Science and Technology, Irbid 22110, Jordan
| | - Abdullah Araidah
- Department of Physiology and Biochemistry, Faculty of Medicine, Jordan University of Science and Technology, Irbid 22110, Jordan
| | - Zouhair Amarin
- Department of Obstetrics and Gynecology, Faculty of Medicine, Jordan University of Science and Technology, Irbid 22110, Jordan
| | - Rami Saadeh
- Department of Public Health and Community Medicine, Faculty of Medicine, Jordan University of Science and Technology, Irbid 22110, Jordan
| | - Othman Al-shboul
- Department of Physiology and Biochemistry, Faculty of Medicine, Jordan University of Science and Technology, Irbid 22110, Jordan
| | - Mariam Khanfar
- Division of Biology and Biomedical Sciences, Washington University in St. Louis, St. Louis, MO 63110, USA
| | - Mohammed Z. Allouh
- Department of Anatomy, Faculty of Medicine, Jordan University of Science and Technology, Irbid 22110, Jordan,Department of Anatomy, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain, United Arab Emirates,Correspondence to: Professor Mohammed Z. Allouh, Department of Anatomy, College of Medicine and Health Sciences, United Arab Emirates University, P.O. Box 15551, Al Ain, United Arab Emirates
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Elfasakhany FM, Alqahtani MS, Elguindy AMA, El-Damarawi MA. Vitamin D Receptor Gene ApaI and TaqI Polymorphisms in Type 2 Diabetes among Saudi Population. Open Access Maced J Med Sci 2022. [DOI: 10.3889/oamjms.2022.10625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Background: Variants of vitamin D receptor (VDR) gene have been linked to a variety of diseases, including metabolic syndrome, cancer, bone disease, and tuberculosis. The relationship between VDR gene mutations and the susceptibility of type 2 diabetes mellitus (T2DM) in different ethnic groups is yet unknown. Vitamin D and its receptor complex have a function in regulating β-cell insulin secretion as a transcription factor.
Objectives: The goal of this study was to see if there is a link between VDR Apa1 and Taq1 polymorphisms and T2DM susceptibility in the Saudis of Makkah environ.
Materials and Methods: DNA was separated from peripheral blood and genotyped in 110 healthy controls and 110 unrelated people with T2DM for the VDR ApaI (G/T) rs7975232 and TaqI (A/G) rs731236 single nucleotide polymorphisms (SNPs) using polymerase chain reaction and restriction fragment length polymorphism (PCR-RFLP) technique.
Results: The distributions of genotypes and alleles of VDR ApaI and TaqI polymorphisms were statistically indifferent across the groups investigated (P >0.05).
Conclusion: These findings showed that polymorphisms in the VDR ApaI and TaqI genes may not be linked to T2DM risk in Saudis.
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Al-Shammri SN, Mustafa AS, Bhattacharya A. Distribution of vitamin D-binding protein/group-specific component gene subtypes in Kuwaiti population. Mol Genet Genomic Med 2022; 10:e1930. [PMID: 35349224 PMCID: PMC9034683 DOI: 10.1002/mgg3.1930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 11/03/2021] [Accepted: 03/08/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Vitamin D-binding protein or group-specific component (Gc) is the major plasma carrier protein of Vitamin D. Two single nucleotide polymorphisms, rs7041 (NM_000583.3:c.1296G>T;NP_000574.2:p.Asp432Glu) and rs4588 (c.1307C>A; p.Thr436Lys), in the GC gene result in three major genotypes, that is, GC1F (c.1296T, c.1307C), GC1S (c.1296G, c.1307C), GC2 (c.1296T, c.1307A), and phenotypes such as Gc1F (p.432Asp, p.436Thr), Gc1S (p.432Glu, p.436Thr), and Gc2 (p.432Asp, p.436Lys). Significant variations in the frequencies of GC subtypes (genotypes/phenotypes) are reported in different populations living in different geographical locations, for example, GC1S/Gc1S (c.1296G, c.1307C/p.432Glu, p.436Thr) and GC2/Gc2 (c.1296T, c.1307A/p.432Asp, p.436Lys) are predominant in Caucasians and people living in the northern hemisphere, and GC1F/Gc1F (c.1296T, c.1307C/p.432Asp, p.436Thr) is predominant in Africans. However, frequencies of major GC subtypes are not known in the Kuwaiti population. In this study, we investigated 512 alleles to identify the major GC subtypes in Kuwaiti nationals. METHODS Genomic DNA was isolated from blood samples of 128 healthy subjects. DNA regions covering the targeted mutations were amplified by PCR. Amplified DNAs were sequenced by the Sanger method and analyzed for specific mutations to determine the GC genotypes and phenotypes. RESULTS The results identified the presence of four GC genotypes/phenotypes namely GC1F/Gc1F (c.1296T, c.1307C/p.432Asp, p.436Thr), GC1S/Gc1S (c.1296G, c.1307C/p.432Glu, p.436Thr), GC2/Gc2 (c.1296T, c.1307A/p.432Asp, p.436Lys), and GC3/Gc3 (c.1296G;c.1307A/p.432Glu, p.436Lys). Among the allelic subtypes (n = 512), GC1S (c.1296G; c.1307C) (n = 270, 52.7%) was predominant, followed by GC1F (c.1296T; c.1307C) (n = 138, 27%), GC2 (c.1296T; c.1307A) (n = 72, 14%), and GC3 (c.1296G; c.1307A) (n = 32, 6.3%). Three common subtypes, that is, GC1F (c.1296T; c.1307C), GC1S (c.1296G; c.1307C), and GC2 (c.1296T; c.1307A) are well documented in the literature, but GC3 (c.1296T; c.1307A) is an uncommon variant found in our study subjects. CONCLUSION We found that GC subtype distribution was unique in the Kuwaiti population, with some affinity to Caucasians. Several factors including ancestral origin, migration history, and environmental forces such as solar intensity may be responsible for the unique distribution of GC subtypes in this population.
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Affiliation(s)
- Suhail Najim Al-Shammri
- Department of Medicine, Faculty of Medicine, Kuwait University, Kuwait, Kuwait.,Department of Medicine, Mubarak Al Kabeer Hospital, Ministry of Health, Kuwait, Kuwait
| | - Abu Salim Mustafa
- Department of Microbiology, Faculty of Medicine, Kuwait University, Kuwait, Kuwait
| | - Arpita Bhattacharya
- Department of Medicine, Faculty of Medicine, Kuwait University, Kuwait, Kuwait
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Lari F, Alabduljaleel T, Mojiminiyi O, Shehab D, Al-Temaimi RA. Exploring the relationship between vitamin D and leptin hormones in type 2 diabetes mellitus patients from Kuwait. Horm Mol Biol Clin Investig 2022; 43:273-280. [PMID: 35417932 DOI: 10.1515/hmbci-2021-0091] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Accepted: 03/13/2022] [Indexed: 11/15/2022]
Abstract
BACKGROUND Type 2 diabetes mellitus (T2DM) and obesity are prevalent in Kuwait. Vitamin D (VD) deficiency and leptin resistance are risk factors for both disorders. A correlation between the two risk factors has been suggested albeit inconsistently reported. Our objective was to determine the effect and association of VD and leptin levels and their related common variants with T2DM. METHODS This case-control study included 203 Kuwaiti T2DM patients and 162 healthy Kuwaiti controls. Leptin and VD levels were measured using enzyme linked immunosorbent assays. Genotyping of LEP rs7799039, LEPR rs1137101, VDR rs2228570 and rs731236 was performed using Taqman genotyping assays. RESULTS Leptin levels were higher in T2DM patients than controls, but vitamin D levels did not differ. No correlation was found between the levels of the two hormones. VDR rs731236G associated with T2DM risk (Odds ratio 1.66, p=0.0008). VDR haplotype analysis revealed GG/AA, GA/AA or GG/AG to associate with T2DM risk (p=0.01) and increased risk of diabetic neuropathy (p=0.002). VDR rs2228570GG associated with leptin levels in T2DM (p=0.01). Effect of LEP rs7799039 on leptin (p=0.01) and VD levels (p=0.02) was only evident in healthy controls. CONCLUSIONS VDR rs731236G is associated with T2DM risk in Kuwait, and a VDR haplotype of a less active, low expressing VDR is associated with T2DM and diabetic neuropathy risk. Common variants in leptin and VD related genes appear to mediate the suggested positive correlation of both hormones however their influence is disrupted in T2DM.
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Affiliation(s)
- Fatmah Lari
- Graduate medical program, Faculty of Medicine, Kuwait University, Safat, Kuwait
| | - Taiba Alabduljaleel
- Graduate medical program, Faculty of Medicine, Kuwait University, Safat, Kuwait
| | - Olusegun Mojiminiyi
- Department of Clinical Pathology, Clinical chemistry unit, Faculty of Medicine, Kuwait University, Safat, Kuwait
| | - Dia Shehab
- Department of Medicine, Faculty of Medicine, Kuwait University, Safat, Kuwait
| | - Rabeah Abbas Al-Temaimi
- Department of Clinical Pathology, Human Genetics Unit, Faculty of Medicine, Kuwait University, Safat, Kuwait
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de Assis CS, Diniz TG, Alcântara JOS, Brito VPADS, do Nascimento RAF, Nunes MKDS, Silva AS, de Queiroga Evangelista IW, Viturino MGM, de Lima RLFC, Persuhn DC. Metabolic impact of the VDR rs1544410 in diabetic retinopathy. PLoS One 2022; 17:e0263346. [PMID: 35213542 PMCID: PMC8880825 DOI: 10.1371/journal.pone.0263346] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Accepted: 01/15/2022] [Indexed: 11/18/2022] Open
Abstract
Aims
To investigate the association between BsmI and DM2 in patients with and without DR and to correlate with clinical parameters in a population in northeastern Brazil.
Methods
Cross-sectional case-control study in which data were collected from 285 individuals, including 128 patients with DM2 and 157 with DR. Clinical, biochemical and anthropometric parameters were analyzed, in addition to the single nucleotide polymorphism (SNP) BsmI of the VDR gene (rs1544410), genotyped by PCR-RFLP.
Results
In the DR group we found a greater number of patients using insulin therapy (p = 0.000) and with longer duration of DM2 (p = 0.000), in addition to higher serum creatinine values (p = 0.001). Higher fasting glucose levels and higher frequency of insulinoterapy were independently observed in patients with DR and b allele carriers, when compared to BB.
Conclusion
The association of the bb/Bb genotypes (rs1544410) of the VDR gene with increased blood glucose levels and insulinoterapy may represent worse glicemic control in rs1544410 b allele carriers in DR Latin American individuals.
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Affiliation(s)
| | - Tainá Gomes Diniz
- Post-Graduate Program in Nutrition Science, Federal University of Paraiba, Joao Pessoa, Brazil
| | | | | | | | - Mayara Karla dos Santos Nunes
- Post-Graduation Program in Development and Technological Innovation of Medicines (DITM), Federal University of Paraiba, Joao Pessoa, Brazil
| | | | | | - Marina Gonçalves Monteiro Viturino
- Ophthalmology, Otolaryngology and Oral and Maxillofacial Surgery Unit, Lauro Wanderley University Hospital, Federal University of Paraiba, Joao Pessoa, Brazil
| | | | - Darlene Camati Persuhn
- Department of Molecular Biology and Post-Graduation Program in Nutrition Science, Federal University of Paraiba, Joao Pessoa, Brazil
- * E-mail:
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11
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Mahmoud I, Sulaiman N. Prevalence of Metabolic Syndrome and Associated Risk Factors in the United Arab Emirates: A Cross-Sectional Population-Based Study. Front Public Health 2022; 9:811006. [PMID: 35141192 PMCID: PMC8818742 DOI: 10.3389/fpubh.2021.811006] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 12/16/2021] [Indexed: 01/26/2023] Open
Abstract
Aims To estimate the prevalence of metabolic syndrome (MetS) and its associated risk factors among the United Arab Emirates (UAE) residents. Methods A cross-sectional population-based study was conducted among adults living in Sharjah and Northern Emirates using the UAE National Diabetes and Lifestyle Study (UAEDIAB) data. Anthropometric measurements and fasting blood samples were obtained. The National Cholesterol Education Program's Adult Treatment Panel III (NCEP/ATP III) guidelines were used to define metabolic syndrome (MetS). Results A total of 3,212 subjects (74.1% men, 25.9% women, mean age 39 ± 11.3 years old) were included in this study. The overall prevalence of MetS was 37.4% (32.7% in women and 39% in men). The prevalence was 33.6% in the Emirati population (38.7% in women and 28.8% in men), 34.5% in the Arab non-Emirati population (29.8% in women and 36.3% in men) and 40.7% in the Asian non-Arab population (25.8% in women and 43.1% in men). Age, gender, ethnicity, educational level, marital status and body mass index were positively associated with MetS. Conclusions This study indicates a high burden of MetS in the UAE, particularly among Emirati women and Asian non-Arab men. The young adult population in the UAE has a high prevalence of MetS compared to global estimates in the same age group. Aggressive intervention strategies targeting the whole population as well as individuals at a high risk are recommended to prevent the development of cardiovascular diseases.
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Affiliation(s)
- Ibrahim Mahmoud
- Department of Family and Community Medicine and Behavioral Sciences, University of Sharjah College of Medicine, Sharjah, United Arab Emirates
| | - Nabil Sulaiman
- Department of Family and Community Medicine and Behavioral Sciences, University of Sharjah College of Medicine, Sharjah, United Arab Emirates
- Clinical Diabetes and Epidemiology Research Group, Baker Heart and Diabetes Institute, Melbourne, VIC, Australia
- *Correspondence: Nabil Sulaiman
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12
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Sanlier N, Guney-Coskun M. Vitamin D, the immune system, and its relationship with diseases. EGYPTIAN PEDIATRIC ASSOCIATION GAZETTE 2022; 70:39. [PMCID: PMC9573796 DOI: 10.1186/s43054-022-00135-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
Background Vitamin D is classified as an immunomodulatory hormone that is synthesized because of skin exposure to sunlight. It is known to come into play during the regulation of hormone secretion, immune functions, cell proliferation, and differentiation. Its deficiency can cause many diseases and their associated pleiotropic effects. In addition, in relation to its eminent function as regards adaptive immune response and innate immune response, vitamin D level is associated with immune tolerance. Methods Literature search prior to May 2021 was conducted through selected websites, including the MEDLINE, Embase, Web of Science, Cochrane Central, www.ClinicalTrials.gov, PubMed, Science Direct, Google Scholar, and EFSA. Results Vitamin D is found effective for the regulation of hormone secretion, immune functions, and cell proliferation along with differentiation. Its role as an immune modulator is based on the presence of receptors on many immune cells and the synthesis of its active metabolite from these cells. Vitamin D, an immune system modulator, inhibits cell proliferation and stimulates cell differentiation. A fair number of immune system diseases, encompassing autoimmune disorders alongside infectious diseases, can occur because of low serum vitamin D levels. Supplementation of vitamin D has positive effects in lessening the severity nature of disease activity; there exists no consensus on the dose to be used. Conclusion It is figured out that a higher number of randomized controlled trials are essential to evaluate efficacy pertaining to clinical cases, treatment duration, type, and dose of supplementation and pathophysiology of diseases, immune system functioning, and the effect of vitamin D to be administered.
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Affiliation(s)
- Nevin Sanlier
- Nutrition and Dietetics Department, Faculty of Health Science, Ankara Medipol University, Ankara, 06050 Turkey
| | - Merve Guney-Coskun
- grid.411781.a0000 0004 0471 9346Nutrition and Dietetics Department, Faculty of Health Science, Istanbul Medipol University, Istanbul, Turkey
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13
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Al-Anouti F, Mousa M, Karras SN, Grant WB, Alhalwachi Z, Abdel-Wareth L, Uddin M, Alkaabi N, Tay GK, Mahboub B, AlSafar H. Associations between Genetic Variants in the Vitamin D Metabolism Pathway and Severity of COVID-19 among UAE Residents. Nutrients 2021; 13:nu13113680. [PMID: 34835935 PMCID: PMC8625365 DOI: 10.3390/nu13113680] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 10/15/2021] [Accepted: 10/15/2021] [Indexed: 12/18/2022] Open
Abstract
Vitamin D has many effects on cells in the immune system. Many studies have linked low vitamin D status with severity of COVID-19. Genetic variants involved in vitamin D metabolism have been implicated as potential risk factors for severe COVID-19 outcomes. This study investigated how genetic variations in humans affected the clinical presentation of COVID-19. In total, 646 patients with SARS-CoV-2 infection were divided into two groups: noncritical COVID-19 (n = 453; 70.12%) and a critical group (n = 193; 29.87%). Genotype data on the GC, NADSYN1, VDR, and CYP2R1 genes along with data on serum 25-hydroxyvitamin D levels were compiled in patients admitted to a major hospital in the United Arab Emirates between April 2020 and January 2021. We identified 12 single-nucleotide polymorphisms associated with the critical COVID-19 condition: rs59241277, rs113574864, rs182901986, rs60349934, and rs113876500; rs4944076, rs4944997, rs4944998, rs4944979, and rs10898210; and rs11574018 and rs11574024. We report significant associations between genetic determinants of vitamin D metabolism and COVID-19 severity in the UAE population. Further research needed to clarify the mechanism of action against viral infection in vitamin D deficiency. These variants could be used with vaccination to manage the spread of SARS-CoV-2 and could be particularly valuable in populations in which vitamin D deficiency is common.
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Affiliation(s)
- Fatme Al-Anouti
- Department of Health Sciences, College of Natural and Health Sciences, Zayed University, Abu Dhabi, United Arab Emirates;
| | - Mira Mousa
- Nuffield Department of Women’s and Reproductive Health, Oxford University, Oxford OX1 4BH, UK;
- Center for Biotechnology, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates; (Z.A.); (G.K.T.)
| | | | - William B. Grant
- Sunlight, Nutrition and Health Research Center, San Francisco, CA 94164-1603, USA;
| | - Zainab Alhalwachi
- Center for Biotechnology, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates; (Z.A.); (G.K.T.)
| | - Laila Abdel-Wareth
- National Reference Laboratory, Abu Dhabi, United Arab Emirates;
- Pathology and Laboratory Medicine Institute, Cleveland Clinic Abu Dhabi, Abu Dhabi, United Arab Emirates
| | - Maimunah Uddin
- Department of Pediatric Infectious Disease, Sheikh Khalifa Medical City, Abu Dhabi, United Arab Emirates; (M.U.); (N.A.)
| | - Nawal Alkaabi
- Department of Pediatric Infectious Disease, Sheikh Khalifa Medical City, Abu Dhabi, United Arab Emirates; (M.U.); (N.A.)
| | - Guan K. Tay
- Center for Biotechnology, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates; (Z.A.); (G.K.T.)
- Psychiatry, Medical School, University of Western Australia, Perth, WA 6009, Australia
- School of Medical and Health Sciences, Edith Cowan University, Joondalup, WA 6027, Australia
| | - Bassam Mahboub
- Dubai Health Authority, Rashid Hospital, Dubai, United Arab Emirates;
| | - Habiba AlSafar
- Center for Biotechnology, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates; (Z.A.); (G.K.T.)
- Department of Biomedical Engineering, College of Engineering, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
- Correspondence:
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Liu Y, Guo X, Huang SY, Gong L, Cui JH, Shen HW, Ye XH, He XF. Evaluation of association studies and a systematic review and meta-analysis of VDR polymorphisms in type 2 diabetes mellitus risk. Medicine (Baltimore) 2021; 100:e25934. [PMID: 34260520 PMCID: PMC8284732 DOI: 10.1097/md.0000000000025934] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/05/2020] [Accepted: 04/17/2021] [Indexed: 01/04/2023] Open
Abstract
Numerous original studies and 4 published meta-analyses have reported the association between the Vitamin D receptor (VDR) BsmI, FokI, ApaI, and TaqI polymorphisms and type 2 diabetes mellitus (T2DM) risk. However, the results were inconsistent. Therefore, an updated meta-analysis was performed to further explore these issues.To further explore the association between the VDR BsmI, FokI, ApaI, and TaqI polymorphisms and T2DM risk.PubMed, EMBASE, Scopus, and Wanfang databases were searched. The following search strategy were used: (VDR OR vitamin D receptor) AND (polymorphism OR variant OR mutation) AND (diabetes OR mellitus OR diabetes mellitus). Pooled crude odds ratios with 95% confidence intervals were applied to evaluate the strength of association in 5 genetic models. Statistical heterogeneity, the test of publication bias, and sensitivity analysis were carried out using the STATA software (Version 12.0). To evaluate the credibility of statistically significant associations, we applied the false-positive report probabilities (FPRP) and Bayesian false discovery probability (BFDP) test.Overall, the VDR BsmI polymorphism was associated with a significantly decreased T2DM risk in Asians; the VDR FokI polymorphism was associated with a significantly decreased T2DM risk in Asians, African countries, and Asian countries; the VDR ApaI polymorphism was associated with a significantly decreased T2DM risk in Caucasians and North American countries.On the VDR ApaI polymorphism, a significantly increased T2DM risk was found in a mixed population. However, when we further performed a sensitivity analysis, FPRP, and BFDP test, less-credible positive results were identified (all FPRP > 0.2 and BFDP > 0.8) in any significant association.In summary, this study strongly indicates that all significant associations were less credible positive results, rather than from true associations.
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Affiliation(s)
- Yao Liu
- Changzhi Medical College, No. 161, JieFangDong Street
| | - Xin Guo
- Changzhi Medical College, No. 161, JieFangDong Street
| | | | - Luan Gong
- Changzhi Medical College, No. 161, JieFangDong Street
| | - Jin-Hui Cui
- Changzhi Medical College, No. 161, JieFangDong Street
| | - Hu-Wei Shen
- Department of Endocrinology, Heping Hospital Affiliated to Changzhi Medical College, Shanxi, Changzhi city
| | - Xiang-Hua Ye
- Department of Radiotherapy, First Affiliated Hospital, Zhejiang University School of Medicine, Zhejiang, Hangzhou city
| | - Xiao-Feng He
- Institute of Evidence-Based Medicine, Heping Hospital Affiliated to Changzhi Medical College, Shanxi, Changzhi city, PR China
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Al-Kashwan TA, Algenabi AHA, Omara AM, Kaftan AN. Association of vitamin D receptor gene polymorphisms BsmI (rs 1544410) and TaqI rs (731236) with the type 2 diabetes mellitus in Iraqi Patients from the middle Euphrates region. Meta Gene 2021. [DOI: 10.1016/j.mgene.2021.100854] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
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16
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Zhang D, Cheng C, Wang Y, Xue Y, Liu Y, Liu Y, Feng M, Xu Z, Li W, Li X. The influence of VDR polymorphisms on the type 2 diabetes susceptibility in Chinese: an interaction with hypertriglyceridemia. Mol Genet Genomics 2021; 296:837-844. [PMID: 33880640 DOI: 10.1007/s00438-021-01784-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Accepted: 04/07/2021] [Indexed: 10/21/2022]
Abstract
Evidence shows that mutations in vitamin D receptor (VDR) have been linked with an increased risk of type 2 diabetes (T2D). However, the interaction effect between VDR variants and environmental factors on the T2D susceptibility remained unclear. Therefore, the current study was conducted to explore the joint effect of VDR polymorphisms and serum triglyceride level on T2D. A total of 2017 participants were included in the cross-sectional study. Taqman probe assays were applied to rs3847987 and rs739837 genotyping. Multiple logistic regression and general linear model were used to examine the effect of interaction between VDR variants and TG on T2D susceptibility and fasting serum glucose, respectively. The results showed that rs739837 polymorphism was significantly associated with an increased risk of T2D under the dominant model (OR = 1.30, 95% CI 1.02-1.66), after adjusting for potential risk factors. Meanwhile, there was a significant additive interaction between rs3847987 and hypertriglyceridemia (synergy index [SI]: 2.98, 95% CI: 1.23-7.23) and between rs739837 and hypertriglyceridemia (SI: 2.36, 95% CI: 1.05-5.31) on T2D susceptibility. Additionally, a significant linear association between fasting glucose and rs3847987 had been found at high triglyceride level (> 1.90 mmol/L) with an inversely concentration-dependent manner. The study provided further evidence that rs739837 and high level of triglyceride were both associated with higher T2D susceptibility in Chinese population. Additionally, the detrimental effect of VDR variants on T2D could be modified by hypertriglyceridemia status.
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Affiliation(s)
- Dongdong Zhang
- Department of Nutrition and Food Hygiene, College of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, 450001, Henan, China
| | - Cheng Cheng
- Department of Epidemiology and Health Statistics, College of Public Health, Zhengzhou University, Zhengzhou, 450001, Henan, China
| | - Yan Wang
- Public Health and Preventive Medicine Teaching and Research Center, Henan University of Chinese Medicine, Zhengzhou, 450001, Henan, China
| | - Yuan Xue
- Department of Nutrition and Food Hygiene, College of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, 450001, Henan, China
| | - Yaping Liu
- Department of Nutrition and Food Hygiene, College of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, 450001, Henan, China
| | - Yiming Liu
- Department of Nutrition and Food Hygiene, College of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, 450001, Henan, China
| | - Mingming Feng
- Department of Nutrition and Food Hygiene, College of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, 450001, Henan, China
| | - Ze Xu
- Department of Nutrition and Food Hygiene, College of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, 450001, Henan, China
| | - Wenjie Li
- Department of Nutrition and Food Hygiene, College of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, 450001, Henan, China
| | - Xing Li
- Department of Nutrition and Food Hygiene, College of Public Health, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, 450001, Henan, China.
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Kaftan AN, Hussain MK, Algenabi AHA, Omara AM, Al-Kashwan TA. Association of sunshine vitamin receptor gene polymorphisms (rs 2228570) and (rs7975232) with the type 2 diabetes mellitus in Iraqi patients from the middle Euphrates region. GENE REPORTS 2021. [DOI: 10.1016/j.genrep.2020.100977] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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18
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Vitamin D Receptor gene polymorphisms and susceptibility to type 2 diabetes: evidence from a meta-regression and meta-analysis based on 47 studies. J Diabetes Metab Disord 2021; 20:845-867. [PMID: 34222093 DOI: 10.1007/s40200-020-00704-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Accepted: 12/07/2020] [Indexed: 12/25/2022]
Abstract
Background Evidence from various studies suggest that vitamin D receptor (VDR) gene polymorphisms are associated with type 2 diabetes (T2D); However, these results have been disputable. Here we conducted a meta-analysis to comprehensively evaluate the effect of VDR gene polymorphisms and susceptibility to T2D. Methods All relevant studies reporting the association between VDR gene polymorphisms and susceptibility to T2D published up to August 2020 were identified by comprehensive systematic database search in web of science, Scopus, and Medline. Pooled odds ratios (ORs) and 95% confidence intervals (CIs) were calculated to measure strength of association. The methodological quality of each study was assessed according to the Newcastle-Ottawa Scale. Subgroup and meta-regression analysis were also performed. Results A total of 47 case-control studies were included in this meta-analysis. The overall population results revealed a significant association between FokI, and BsmI (heterozygote model) polymorphisms and T2D in the overall analysis. However, no association was found with the TaqI and ApaI polymorphisms. Moreover, the pooled results of subgroup analysis by ethnicity suggested significant association between FokI, TaqI, and BsmI polymorphisms and T2D in some subgroups. Meta-regression analyses indicated that none of the publication year, ethnicity, and genotyping method were the source of heterogenicity in all four polymorphisms. Conclusions This meta-analysis suggested a significant association between VDR gene FokI, and BsmI (heterozygote model) polymorphisms and T2D susceptibility in overall population and ethnic-specific analysis. Supplementary Information The online version contains supplementary material available at 10.1007/s40200-020-00704-z.
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Wang D, Su K, Ding Z, Zhang Z, Wang C. Association of Vitamin D Receptor Gene Polymorphisms with Metabolic Syndrome in Chinese Children. Int J Gen Med 2021; 14:57-66. [PMID: 33469344 PMCID: PMC7812523 DOI: 10.2147/ijgm.s287205] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Accepted: 12/25/2020] [Indexed: 12/14/2022] Open
Abstract
Purpose To investigate the association between vitamin D receptor (VDR) gene polymorphisms and vitamin D deficiency, overweightness/obesity, and metabolic syndrome (MetS) in a cohort of Han children residing in Hangzhou, China. Patients and Methods This study assessed 106 overweight/obese and 86 healthy (control) children. Five single-nucleotide polymorphisms (SNPs) in the VDR gene, namely, TaqI (rs731236 T > C), ApaI (rs7975232 C > A), BsmI (rs1544410 G > A), FokI (rs2228570 G >A), and Cdx2 (rs11568820 G > A), were genotyped by sequencing the total polymerase chain reaction products. The distributions of different genotypes and alleles were compared among different groups. Results The serum 25-hydroxyvitamin D (25(OH)D) concentration was significantly lower in overweight/obese children, while the AA genotype of ApaI SNP exhibited higher frequencies in the overweight/obese group than in the control. Furthermore, children with the ApaI AA genotype showed higher levels of Glu-60min, Glu-90min, Glu-120min and triglyceride. The AA genotype of FokI SNP was significantly associated with MetS. However, no association was observed between the five VDR SNPs and the risk of vitamin D deficiency. Conclusion VDR ApaI polymorphisms appear to be correlated with overweightness/obesity and glucose intolerance. FokI polymorphisms may be linked to a higher susceptibility toward MetS in Chinese children.
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Affiliation(s)
- Di Wang
- Department of Pediatrics, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, People's Republic of China.,Department of Pediatrics, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, People's Republic of China
| | - Kunkai Su
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, People's Republic of China
| | - Zhongxiang Ding
- Department of Radiology, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, People's Republic of China
| | - Zhiqun Zhang
- Department of Pediatrics, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, People's Republic of China
| | - Chunlin Wang
- Department of Pediatrics, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, People's Republic of China
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Alathari BE, Sabta AA, Kalpana CA, Vimaleswaran KS. Vitamin D pathway-related gene polymorphisms and their association with metabolic diseases: A literature review. J Diabetes Metab Disord 2020; 19:1701-1729. [PMID: 33553043 PMCID: PMC7843833 DOI: 10.1007/s40200-020-00561-w] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Accepted: 05/29/2020] [Indexed: 12/13/2022]
Abstract
PURPOSE Given that the relationship between vitamin D status and metabolic diseases such as obesity and type 2 diabetes (T2D) remains unclear, this review will focus on the genetic associations, which are less prone to confounding, between vitamin D-related single nucleotide polymorphisms (SNPs) and metabolic diseases. METHODS A literature search of relevant articles was performed on PubMed up to December 2019. Those articles that had examined the association of vitamin D-related SNPs with obesity and/or T2D were included. Two reviewers independently evaluated the eligibility for the inclusion criteria and extracted the data. In total, 73 articles were included in this review. RESULTS There is a lack of research focusing on the association of vitamin D synthesis-related genes with obesity and T2D; however, the limited available research, although inconsistent, is suggestive of a protective effect on T2D risk. While there are several studies that investigated the vitamin D metabolism-related SNPs, the research focusing on vitamin D activation, catabolism and transport genes is limited. Studies on CYP27B1, CYP24A1 and GC genes demonstrated a lack of association with obesity and T2D in Europeans; however, significant associations with T2D were found in South Asians. VDR gene SNPs have been extensively researched; in particular, the focus has been mainly on BsmI (rs1544410), TaqI (rs731236), ApaI (rs7975232) and FokI (rs2228570) SNPs. Even though the association between VDR SNPs and metabolic diseases remain inconsistent, some positive associations showing potential effects on obesity and T2D in specific ethnic groups were identified. CONCLUSIONS Overall, this literature review suggests that ethnic-specific genetic associations are involved. Further research utilizing large studies is necessary to better understand these ethnic-specific genetic associations between vitamin D deficiency and metabolic diseases.
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Affiliation(s)
- Buthaina E. Alathari
- Hugh Sinclair Unit of Human Nutrition, Department of Food and Nutritional Sciences, University of Reading, PO Box 226, Whiteknights, Reading, RG6 6AP UK
- Department of Food Science and Nutrition, Faculty of Health Sciences, The Public Authority for Applied Education and Training, P.O. Box 14281, AlFaiha , 72853 Kuwait
| | - Aji A. Sabta
- Department of Nutrition, Faculty of Health Sciences, University Alma Ata, Yogyakarta, 55183 Indonesia
- Postgraduate Biomedical Science Department, Faculty of Medicine, Andalas University, West Sumatra , 25172 Indonesia
| | - Chinnappan A. Kalpana
- Avinashilingam Institute for Home Science and Higher Education for Women, Coimbatore, Tamil Nadu India
| | - Karani Santhanakrishnan Vimaleswaran
- Hugh Sinclair Unit of Human Nutrition, Department of Food and Nutritional Sciences, University of Reading, PO Box 226, Whiteknights, Reading, RG6 6AP UK
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21
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Genetic polymorphisms frequency of vitamin D receptor gene rs7975232 and rs731236 in Iraqi thalassemic patients and healthy controls compared to Arabian healthy populations. Meta Gene 2020. [DOI: 10.1016/j.mgene.2020.100723] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
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22
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Kumar R, Gupta N, Singh V, Kumar V, Haq A, Mirza AA, Sharma A. Unveiling molecular associations of polymorphic variants of VDR gene (FokI, BsmI and ApaI) in multiple myeloma patients of Indian population. J Steroid Biochem Mol Biol 2020; 199:105588. [PMID: 32004705 DOI: 10.1016/j.jsbmb.2020.105588] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Revised: 01/07/2020] [Accepted: 01/08/2020] [Indexed: 12/20/2022]
Abstract
Multiple myeloma (MM) is a plasma cell malignancy frequently accompanied with skeletal co-morbidity. Vitamin D (1,25(OH)2D) is an important mediator of skeletal homeostasis that mediates its effect by binding to vitamin D receptor (VDR), a steroid family receptor and modulates various downstream pathways. Multiple polymorphisms have been determined in VDR gene that witnessed significant association with cancer development and progression. Therefore, in this maiden study, we recruited 75 newly diagnosed MM patients and 75 control subjects. 25-hydroxy vitamin D (25(OH)D) levels were measured in all recruited study subjects. Further, PCR-RFLP was performed in DNA samples of recruited study subjects. Results demonstrated significantly decreased 25(OH)D levels in MM patients compared to controls. Additionally, decreased 25(OH)D levels in MM patients inversely associated with disease severity. Further, single nucleotide polymorphism (SNP) analysis of VDR gene showed significantly higher risk of MM disease development in Ff + ff, Aa + aa, and Bb + bb genotypes. Additionally, FokI f, ApaI a and BsmI b alleles were significantly associated with MM occurrence. In conclusion, this study provided initial evidences of association between 25(OH)D insufficiency, VDR gene polymorphism and MM development. Thus, we suggest that a study involving assessment of 25(OH)D levels and VDR gene polymorphism in large patients' cohort might substantiate their role in MM development which would further provide impetus to give 25(OH)D supplementation along with conventional chemotherapeutic agents for myeloma treatment in future.
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Affiliation(s)
- Raman Kumar
- Department of Biochemistry, All India Institute of Medical Sciences (AIIMS), New Delhi, India; Department of Biochemistry, All India Institute of Medical Sciences (AIIMS), Rishikesh, India
| | - Nidhi Gupta
- Department of Biochemistry, All India Institute of Medical Sciences (AIIMS), New Delhi, India
| | - Vishwajeet Singh
- Department of Biostatistics, All India Institute of Medical Sciences (AIIMS), New Delhi, India
| | - Vimal Kumar
- Department of Biochemistry, All India Institute of Medical Sciences (AIIMS), New Delhi, India
| | - Afrozul Haq
- Department of Food Technology, Jamia Hamdard, New Delhi, India.
| | - Anissa Atif Mirza
- Department of Biochemistry, All India Institute of Medical Sciences (AIIMS), Rishikesh, India
| | - Alpana Sharma
- Department of Biochemistry, All India Institute of Medical Sciences (AIIMS), New Delhi, India.
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Nakhl S, Sleilaty G, Chouery E, Salem N, Chahine R, Farès N. FokI vitamin D receptor gene polymorphism and serum 25-hydroxyvitamin D in patients with cardiovascular risk. Arch Med Sci Atheroscler Dis 2019; 4:e298-e303. [PMID: 32368685 PMCID: PMC7191939 DOI: 10.5114/amsad.2019.91437] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Accepted: 11/19/2019] [Indexed: 01/02/2023] Open
Abstract
INTRODUCTION The biological actions of vitamin D are mediated through vitamin D receptor (VDR). Numerous single-nucleotide polymorphisms (SNPs) in the VDR gene have been identified, and some have been associated with cardiovascular disease (CVD) risk factors. This study aims to evaluate the association of five SNPs in the VDR gene with 25-hydroxyvitamin D (25[OH]D) levels in patients with at least one CVD risk factor. MATERIAL AND METHODS Genomic DNA was sequenced using standard Sanger methods for five VDR SNPs (BsmI rs1544410; ApaI rs7975232; Cdx2 rs11568820; TaqI rs731236; FokI rs2228570) in 50 Mediterranean subjects having hypovitaminosis D with at least one documented CVD risk factor, aged 18 years or more. The collected variables were serum levels of (25[OH]D), HbA1c, fasting plasma glucose, triglycerides, LDL cholesterol, and total cholesterol. RESULTS BsmI, ApaI, and TaqI were moderately to highly intercorrelated. Cdx2 was less frequent than expected. With respect to the number of mutations in FokI, levels of (25 [OH]D) were 11.2 ±5.5 ng/ml in the absence of mutations, 12.6 ±4.7 ng/ml in the presence of one mutation, and 16.5 ± 5.5 ng/ml in the presence of two mutations. CONCLUSIONS FokI polymorphism is more frequent in subjects with cardiovascular risk factors than in the general Caucasian population.
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Affiliation(s)
- Sahar Nakhl
- Research Laboratory in Physiology and Physiopathology (LRPP), Health Technology Centre, Faculty of Medicine, Saint Joseph University, Beirut, Lebanon
- Research Laboratory in Oxidative Stress and Antioxidants, Faculty of Medical Sciences and Doctoral School in Science and Technology, Lebanese University, Beirut, Lebanon
| | - Ghassan Sleilaty
- Faculty of Medicine, Higher Institute of Public Health, Saint Joseph University, Beirut, Lebanon
| | - Eliane Chouery
- Medical Genetics Unit, Faculty of Medicine, Saint Joseph University, Beirut, Lebanon
| | - Nabiha Salem
- Medical Genetics Unit, Faculty of Medicine, Saint Joseph University, Beirut, Lebanon
| | - Ramez Chahine
- Research Laboratory in Oxidative Stress and Antioxidants, Faculty of Medical Sciences and Doctoral School in Science and Technology, Lebanese University, Beirut, Lebanon
- Faculty of Public Health, Sagesse University, Beirut, Lebanon
| | - Nassim Farès
- Research Laboratory in Physiology and Physiopathology (LRPP), Health Technology Centre, Faculty of Medicine, Saint Joseph University, Beirut, Lebanon
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Ma L, Wang S, Chen H, Cui L, Liu X, Yang H, Li G, Liu S, Qi T, Tian H. Diminished 25-OH vitamin D 3 levels and vitamin D receptor variants are associated with susceptibility to type 2 diabetes with coronary artery diseases. J Clin Lab Anal 2019; 34:e23137. [PMID: 31793694 PMCID: PMC7171300 DOI: 10.1002/jcla.23137] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 11/09/2019] [Accepted: 11/12/2019] [Indexed: 12/12/2022] Open
Abstract
Background Role of plasma vitamin D and genetic variants of its receptor (VDR) in susceptibility to different diseases has been documented. Various studies in different populations have been highlighted strong associations with diabetes and cardiovascular diseases. Vitamin D deficiency has been linked with the development of type 2 diabetes (T2D) and the onset of coronary artery diseases (CAD). However, the role of vitamin D in predisposition to CAD in patients with T2D is ill‐defined. Materials and Methods We enrolled 674 Chinese T2D patients, and based on clinical phenotype, patients were further categorized into patients with (n = 138) or without coronary artery disease (n = 536). Five hundred twenty‐one healthy subjects from similar geographical areas, free from diabetic or coronary disorders, were enrolled as controls. Serum levels of 25‐OH vitamin D were quantified by ELISA. Common VDR (FokI, TaqI, BsmI, and ApaI) polymorphisms were genotyped by polymerase chain reaction‐restriction fragment length polymorphism (PCR‐RFLP). Results Patients with T2D displayed lower levels of 25‐OH vitamin D compared with healthy controls. Furthermore, T2D patients with CAD clinical phenotype had the lowest levels of vitamin D. Prevalence of FokI and TaqI mutants was significantly higher in diabetic patients when compared to controls. Interestingly, Tt genotype was more frequent in the artery disease group in comparison with T2D patients without heart involvement. Combined analysis of VDR polymorphisms and serum levels of vitamin D revealed a significant role in predisposition to T2D with or without CAD. Conclusions Lower vitamin D levels and variants of VDR polymorphisms (FokI and TaqI) are associated with susceptibility to T2D and clinical manifestation.
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Affiliation(s)
- Lei Ma
- Department of Endocrinology, Ninth Hospital of Xi'an, Xi'an, China.,Department of Peripheral Vascular Disease, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Shujin Wang
- Department of Endocrinology, Ninth Hospital of Xi'an, Xi'an, China
| | - Heming Chen
- Department of Peripheral Vascular Disease, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.,Department of Endocrinology, Ankang Central Hospital, Ankang, China
| | - Lin Cui
- Department of Nephrology, Ninth Hospital of Xi'an, Xi'an, China
| | - Xiaoxiang Liu
- Department of Peripheral Vascular Disease, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.,Departments of Cardiology, Shaanxi Provincial People's Hospital, Xi'an, China
| | - Hua Yang
- Department of Endocrinology, Ninth Hospital of Xi'an, Xi'an, China
| | - Guohong Li
- Department of Endocrinology, Ninth Hospital of Xi'an, Xi'an, China
| | - Songfang Liu
- Department of Endocrinology, Ninth Hospital of Xi'an, Xi'an, China
| | - Ting Qi
- Department of Endocrinology, Ninth Hospital of Xi'an, Xi'an, China
| | - Hongyan Tian
- Department of Peripheral Vascular Disease, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
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25
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Rodrigues KF, Pietrani NT, Bosco AA, de Sousa MCR, Silva IDFO, Silveira JN, Gomes KB. Lower Vitamin D Levels, but Not VDR Polymorphisms, Influence Type 2 Diabetes Mellitus in Brazilian Population Independently of Obesity. ACTA ACUST UNITED AC 2019; 55:medicina55050188. [PMID: 31121922 PMCID: PMC6572088 DOI: 10.3390/medicina55050188] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 05/16/2019] [Accepted: 05/17/2019] [Indexed: 12/12/2022]
Abstract
Background and Objectives: Vitamin D levels have been associated with a diversity of diseases, including obesity. Vitamin D presents a pleiotropic action, and can regulate insulin secretion and inflammatory responses. Vitamin D receptor (VDR) gene polymorphisms are involved in the gene expression regulation and have been associated with type 2 diabetes mellitus (T2DM). This study aimed to evaluate the association between the polymorphisms ApaI (rs7975232), BsmI (rs1544410), FokI (rs10735810), and TaqI (rs731236) in the VDR gene in people diagnosed with T2DM, and plasma 25-hydroxivitamin D levels [25(OH)D]. Materials and Methods: A total of 101 T2DM patients and 62 gender, age, and body mass index (BMI) matched non-diabetic controls were included in this study. Molecular analyzes were performed by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). The plasma 25(OH)D levels were measured by high performance liquid chromatography. Results: The plasma 25(OH)D levels were lower in T2DM patients (17.2 (16.6) ng/mL) when compared with the control subjects (30.8 (16.2) ng/mL, p < 0.0001), independently of obesity status. We found no difference between genotypic and allelic frequencies of the VDR polymorphisms when comparing the T2DM group and control group (p > 0.05 for all), and did not show any association with plasma 25(OH)D levels. Conclusions: These results suggest that T2DM is associated with lower plasma 25(OH)D levels, which are not related to BMI and VDR gene polymorphisms.
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Affiliation(s)
- Kathryna Fontana Rodrigues
- Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG 31270-901, Brazil.
| | - Nathalia Teixeira Pietrani
- Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG 31270-901, Brazil.
| | - Adriana Aparecida Bosco
- Instituto de Ensino e Pesquisa, Santa Casa de Belo Horizonte, Belo Horizonte, MG 30150-240, Brazil.
| | | | | | | | - Karina Braga Gomes
- Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG 31270-901, Brazil.
- Faculdade de Farmácia, Universidade Federal de Minas Gerais, Belo Horizonte, MG 31270-901, Brazil.
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Musambil M, Siddiqui K. Genetics and genomics studies in type 2 diabetes: A brief review of the current scenario in the Arab region. Diabetes Metab Syndr 2019; 13:1629-1632. [PMID: 31336532 DOI: 10.1016/j.dsx.2019.03.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Accepted: 03/12/2019] [Indexed: 12/15/2022]
Abstract
BACKGROUND Type 2 diabetes (T2D) is a polygenic and multi-factorial complex disease, the challenge to find genetic markers that could explain the risk of development of this disease still remains unresolved. The Arab region is one among the populations with a high prevalence of T2D and a large number of studies have been carried out in exploring the genetic factors associated with T2D risk. AIM To summarize the recent developments in the Arab world based on the recent studies that had looked into genetic factors associated with the development of T2D in the Arab populations. METHODS A systematic literature search was conducted to identify studies published between 2015 and 2018 reporting genetic factors or polymorphisms associated with the risk of T2D in the Arab world. The online databases PubMed and Web of Science were used to perform the literature search. CONCLUSION The present study has evaluated 14 studies published during the year 2015-2018. Studies from Egypt, Iraq, Jordan, Oman, Qatar, Saudi Arabia, Tunisia, and United Arab Emirates had been explored studying the associations of GIPR, ADIPOQ, FTO, (GRCh38.p12), MLXIP, AKNAD1, KCNJ11 CDKAL1, CDKN2A/2B, TCF7L2, ACE, SNAP25, ELMO1, VDR, KCTD8, GABRA4 and PRKD1 genes with T2D development.
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Affiliation(s)
- Mohthash Musambil
- Strategic Center for Diabetes Research, College of Medicine, King Saud University, Riyadh, Saudi Arabia.
| | - Khalid Siddiqui
- Strategic Center for Diabetes Research, College of Medicine, King Saud University, Riyadh, Saudi Arabia.
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Dalibalta S, Samara F, Qadri H, Adouchana H. Potential causes of asthma in the United Arab Emirates: drawing insights from the Arabian Gulf. REVIEWS ON ENVIRONMENTAL HEALTH 2018; 33:205-212. [PMID: 29664734 DOI: 10.1515/reveh-2017-0030] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2017] [Accepted: 03/08/2018] [Indexed: 06/08/2023]
Abstract
There is considerable concern on the rise in the incidence of asthma worldwide with statistics in the United Arab Emirates (UAE) indicating that at least 13% of schoolchildren, particularly of Emirati descent, suffer from asthma. With its high rates of hospital admissions, negative socioeconomic impact and significant morbidity, this is a disease that requires optimal guidelines for control and awareness. In this article, we review the current knowledge of asthma in the UAE and draw on studies, especially from the surrounding region, to identify its contributing factors within this population. The most frequently identified agents pertinent to the UAE include outdoor and indoor environmental causes exacerbated by the country's rapid urbanization, genetic factors aided in transmission by consanguineous marriage, the patient's socioeconomic status and a rise in vitamin D deficiencies. This evidence aims to inform healthcare professionals and governmental agencies in order to best create guidelines for controlling the burden of this debilitating disease.
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Affiliation(s)
- Sarah Dalibalta
- Department of Biology, Chemistry and Environmental Sciences, American University of Sharjah, P.O. Box 26666, Sharjah, UAE, Phone: 00971-65154421, Fax: 00971-65152450
| | - Fatin Samara
- Department of Biology, Chemistry and Environmental Sciences, American University of Sharjah, Sharjah, UAE
| | - Haya Qadri
- Department of Biology, Chemistry and Environmental Sciences, American University of Sharjah, Sharjah, UAE
| | - Hibatallah Adouchana
- Department of Biology, Chemistry and Environmental Sciences, American University of Sharjah, Sharjah, UAE
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Sangkaew B, Nuinoon M, Jeenduang N. Association of vitamin D receptor gene polymorphisms with serum 25(OH)D levels and metabolic syndrome in Thai population. Gene 2018; 659:59-66. [PMID: 29555202 DOI: 10.1016/j.gene.2018.03.047] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2018] [Revised: 03/03/2018] [Accepted: 03/15/2018] [Indexed: 02/06/2023]
Abstract
Metabolic syndrome (MetS) increases the risk of developing cardiovascular disease (CVD) and type 2 diabetes mellitus (T2DM). The vitamin D receptor gene (VDR) polymorphisms have been found associated with MetS and serum 25(OH)D levels but these associations remain controversial. The aim of this study was to investigate the relationship between the VDR polymorphisms and MetS, metabolic components, and serum 25(OH)D levels within the Thai population. A case-control study included 237 participants with MetS according to the MetS diagnostic criteria of NCEP ATPIII and 376 controls. Anthropometric data, blood pressure, lipid profiles, serum 25 (OH)D, and fasting blood glucose were measured. VDR FokI, BsmI, TaqI, and Cdx2 polymorphisms were genotyped by using PCR-HRM. There were no significant differences in the frequencies of VDR genotypes and alleles between MetS and the control groups. VDR TaqI TT, and BsmI BB + Bb genotypes were associated with lower 25(OH)D levels (p < 0.05) in comparison to TaqI Tt, and BsmI bb genotypes in the MetS group, respectively. In addition, the VDR Cdx2 GG genotype was associated with higher WC compared with the AG genotype in all subjects (p < 0.05). Logistic regression analysis revealed that BB + Bb genotypes of the VDR BsmI had significantly increased the odds ratio (OR) of hypertriglyceridemia when compared with the bb genotype (OR 1.87; 95% CI 1.10-3.19, p = 0.022). In conclusion, VDR BsmI variant was associated with hypertriglyceridemia and may be predisposed to developing MetS. VDR TaqI and BsmI polymorphisms seems to influence serum 25(OH)D levels in MetS subjects, while Cdx2 polymorphism may influence WC in all subjects.
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Affiliation(s)
- Boonnisa Sangkaew
- School of Allied Health Sciences, Walailak University, Nakhon Si Thammarat, Thailand
| | - Manit Nuinoon
- School of Allied Health Sciences, Walailak University, Nakhon Si Thammarat, Thailand; Research Excellence Center for Innovation and Health Products (RECIHP), Walailak University, Nakhon Si Thammarat, Thailand
| | - Nutjaree Jeenduang
- School of Allied Health Sciences, Walailak University, Nakhon Si Thammarat, Thailand; Research Excellence Center for Innovation and Health Products (RECIHP), Walailak University, Nakhon Si Thammarat, Thailand.
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