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Khdair SI, Jarrar YB, Jarrar W. Immunogenetic Prediction of VDR Gene SNPs: Lack of Association with Susceptibility to Type 1 Diabetes in Jordanian Patients. Diabetes Metab Syndr Obes 2021; 14:4079-4087. [PMID: 34584434 PMCID: PMC8464324 DOI: 10.2147/dmso.s333005] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Accepted: 09/09/2021] [Indexed: 12/16/2022] Open
Abstract
PURPOSE The interaction of Vitamin D and its receptor plays a crucial role in immune modulation. Therefore, the relationship between the pathogenesis of type 1 diabetes and the genetic variants of Vitamin D receptor, which is involved in the activity of Vitamin D, was studied extensively in different populations. The association of Vitamin D receptor gene polymorphisms with predisposition to type 1 diabetes revealed controversial and inconclusive results. The aim of this study was to examine the association of four Vitamin D receptor polymorphisms with type 1 diabetes in Jordanian patients. PATIENTS AND METHODS Analysis of the single nucleotide polymorphisms FokI (rs2228570), ApaI (rs7975232), TaqI (rs731236) and BsmI (rs1544410) in 100 Jordanian volunteers (50 control and 50 Type 1 diabetes patients) was performed using the highly specific New Generation Sequencing technology. RESULTS The distribution of allele, genotype as well as haplotype frequencies exhibited no significant (P > 0.05) differences between type 1 diabetes patients and controls. Furthermore, no differences (P > 0.05) in the frequency of the genotypes of the Vitamin D receptor genetic variants were found in relation to the age of disease onset. CONCLUSION These findings suggest these four single nucleotide polymorphisms of the Vitamin D receptor gene seem not to be associated with type 1 diabetes predisposition in Jordanian patients. Further wide genome studies are recommended to detect other genetic variant associations with type 1 diabetes among Jordanians.
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Affiliation(s)
- Sawsan I Khdair
- Department of Pharmacy, Faculty of Pharmacy, Al-Zaytoonah University of Jordan, Amman, 11733, Jordan
- Correspondence: Sawsan I Khdair Department of Pharmacy, Faculty of Pharmacy, Al-Zaytoonah University of Jordan, Amman, 11733, JordanTel +962795513275 Email
| | - Yazun B Jarrar
- Department of Pharmacy, Faculty of Pharmacy, Al-Zaytoonah University of Jordan, Amman, 11733, Jordan
| | - Wassan Jarrar
- Department of Pharmacy, Faculty of Pharmacy, Al-Zaytoonah University of Jordan, Amman, 11733, Jordan
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Zhai N, Bidares R, Makoui MH, Aslani S, Mohammadi P, Razi B, Imani D, Yazdchi M, Mikaeili H. Vitamin D receptor gene polymorphisms and the risk of the type 1 diabetes: a meta-regression and updated meta-analysis. BMC Endocr Disord 2020; 20:121. [PMID: 32771009 PMCID: PMC7414991 DOI: 10.1186/s12902-020-00575-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Accepted: 06/15/2020] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND The association between the polymorphisms in the vitamin D receptor (VDR) gene and the risk of type 1 diabetes mellitus (T1DM) has been evaluated in several studies. However, the findings were inconclusive. Thus, we conducted a meta-analysis to comprehensively evaluate the effect of VDR gene polymorphisms on the risk of T1DM. METHODS All relevant studies reporting the association between VDR gene polymorphisms and susceptibility to T1DM published up to May 2020 were identified by comprehensive systematic database search in ISI Web of Science, Scopus, and PubMed/MEDLINE. Strength of association were assessed by calculating of pooled odds ratios (ORs) and 95% confidence intervals (CIs). The methodological quality of each study was assessed according to the Newcastle-Ottawa Scale. To find the potential sources of heterogeneity, meta-regression and subgroup analysis were also performed. RESULTS A total of 39 case-control studies were included in this meta-analysis. The results of overall population rejected any significant association between VDR gene polymorphisms and T1DM risk. However, the pooled results of subgroup analysis revealed significant negative and positive associations between FokI and BsmI polymorphisms and T1DM in Africans and Americans, respectively. CONCLUSIONS This meta-analysis suggested a significant association between VDR gene polymorphism and T1DM susceptibility in ethnic-specific analysis.
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Affiliation(s)
- Na Zhai
- Endocrine 1st Department, Baoding No.1 Central Hospital, Baoding, 071000, China.
| | - Ramtin Bidares
- Department of Experimental Medicine, Sapienza University, Rome, Italy
| | - Masoud Hassanzadeh Makoui
- Department of Immunology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Saeed Aslani
- Department of Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Payam Mohammadi
- Department of Clinical Biochemistry, School of Medicine, Tarbiat Modares University, Tehran, Iran
| | - Bahman Razi
- Department of Hematology, School of Medicine, Tarbiat Modares University, Tehran, Iran
| | - Danyal Imani
- Department of Immunology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Yazdchi
- Neuroscience Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Haleh Mikaeili
- Tuberculosis and lung Diseases Research Center, Tabriz University of medical sciences, Tabriz, Iran.
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İnan-Erdoğan I, Akgül S, Işgın-Atıcı K, Tuğrul-Yücel T, Boduroğlu K, Derman O, Kanbur N. Effects of vitamin D and estrogen receptor polymorphisms on bone mineral density in adolescents with anorexia nervosa. J Pediatr Endocrinol Metab 2019; 32:1377-1384. [PMID: 31714887 DOI: 10.1515/jpem-2019-0240] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Accepted: 09/02/2019] [Indexed: 11/15/2022]
Abstract
Background Anorexia nervosa (AN) is a serious eating disorder that is associated with decreased bone mineral density (BMD) and greater lifetime risk for fractures. The aim of this study was to determine the correlation between BMD and genetic polymorphisms in AN. Methods This case-control study analyzed vitamin D receptor (VDR) (VDRBsml, VDRFokl) and estrogen receptor (ESR) (ESR1Xbal, ESR1Pvull) polymorphisms in 45 adolescents diagnosed with AN and 46 age-matched healthy controls. BMD values of the AN group were classified as low or normal, and polymorphisms were compared between cases and controls. The effects of body mass index (BMI), duration of disease and amenorrhea on BMD were also evaluated. Results In girls with AN, a positive effect of the bb genotype of VDRBsmI polymorphism on femur Z-scores (p = 0.103) and of the Ff genotype of VDRFokI polymorphism on vertebra Z-scores (p = 0.097) was observed. In boys with AN, a positive effect of the Ff genotype of VDRFokI polymorphism on vertebra BMD (g/cm2) was detected (p = 0.061). No association was detected between ESR polymorphisms. An inverse relationship was observed between BMD and duration of illness and amenorrhea. A direct relationship was detected between BMD and BMI. Conclusions Specific VDR gene polymorphism genotypes may have positive effects on BMD in patients with AN. Additionally, the lack of association between ESR gene polymorphisms on BMD could be attributed to the low estrogen status of the patient.
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Affiliation(s)
- Işıl İnan-Erdoğan
- Hacettepe University Faculty of Medicine, İhsan Doğramacı Children's Hospital, Department of Pediatrics, Ankara, Turkey
| | - Sinem Akgül
- Hacettepe University Faculty of Medicine, İhsan Doğramacı Children's Hospital, Department of Pediatrics, Division of Adolescent Medicine, Ankara, Turkey
| | - Kübra Işgın-Atıcı
- Hacettepe University, Department of Nutrition and Dietetics, Ankara, Turkey
| | - Tuğba Tuğrul-Yücel
- Hacettepe University Faculty of Medicine, İhsan Doğramacı Children's Hospital, Department of Pediatrics, Division of Pediatric Genetics, Ankara, Turkey
| | - Koray Boduroğlu
- Hacettepe University Faculty of Medicine, İhsan Doğramacı Children's Hospital, Department of Pediatrics, Division of Pediatric Genetics, Ankara, Turkey
| | - Orhan Derman
- Hacettepe University Faculty of Medicine, İhsan Doğramacı Children's Hospital, Department of Pediatrics, Division of Adolescent Medicine, Ankara, Turkey
| | - Nuray Kanbur
- Hacettepe University Faculty of Medicine, İhsan Doğramacı Children's Hospital, Department of Pediatrics, Division of Adolescent Medicine, Ankara, Turkey
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Dogan B, Oner C, Feyizoglu G, Yoruk N, Oguz A. Vitamin D status of Turkish type 1 diabetic patients. Diabetes Metab Syndr 2019; 13:2037-2039. [PMID: 31235133 DOI: 10.1016/j.dsx.2019.04.026] [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: 03/29/2019] [Accepted: 04/21/2019] [Indexed: 11/21/2022]
Abstract
INTRODUCTION Vitamin D was associated with the pathogenesis, treatment and prognosis of type 1 and type 2 diabetes mellitus. The aim of this study is to assess vitamin D status of Turkish adult type 1 DM patients and compare them with health controls and also to assess the relationship of vitamin D and glycemic control. METHOD Study was designed as cross-sectional and conducted in a tertiary Hospital diabetes unit. 296 type diabetic patients and 151 healthy controls was included to the study. Venous samples were collected into plain tubes after overnight fasting. Serum 25-hydroxyvitamin D level was measured by radioimmunoassay technique. Statistical analysis was performed with SPSS 15.0. RESULTS 25-Hydroxyvitamin D levels were similar between patients with type 1 diabetes (22, 9 ± 17, 4 ng/ml) and controls (24, 5 ± 19, 3 ng/ml) (p = 0,382). Most of the participants have 25-Hydroxyvitamin D deficiency. As shown in Table 2 serum 25-Hydroxyvitamin D level was not associated with most of the biochemical or anthropometric parameters. CONCLUSION As a result there were no difference between type 1 diabetics and healthy controls according to their vitamin D levels. Further studies with a larger sample of patients will improve our understanding of the relation of vitamin D and diabetes.
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Affiliation(s)
- Burcu Dogan
- Department of Family Medicine, Sakarya Training and Research Hospital, Sakarya, Turkey
| | - Can Oner
- Department of Family Medicine, Kartal Dr Lutfi Kirdar Training and Research Hospital, Istanbul, Turkey.
| | - Gunes Feyizoglu
- Diabetes Nursing Department of Internal Medicine, Istanbul Medeniyet University Göztepe Training and Research Hospital, ıstanbul, Turkey
| | - Nurdan Yoruk
- Diabetes Nursing Department of Internal Medicine, Istanbul Medeniyet University Göztepe Training and Research Hospital, ıstanbul, Turkey
| | - Aytekin Oguz
- Department of Internal Medicine, Istanbul Medeniyet University Goztepe Training and Research Hospital, ıstanbul, Turkey
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Rasoul MA, Haider MZ, Al-Mahdi M, Al-Kandari H, Dhaunsi GS. Relationship of four vitamin D receptor gene polymorphisms with type 1 diabetes mellitus susceptibility in Kuwaiti children. BMC Pediatr 2019; 19:71. [PMID: 30845908 PMCID: PMC6404350 DOI: 10.1186/s12887-019-1448-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Accepted: 03/01/2019] [Indexed: 12/17/2022] Open
Abstract
Background The incidence of type 1 diabetes mellitus (T1DM) in Kuwait is amongst the highest in the world. Vitamin D is considered to be involved in immune modulation and its deficiency contribute to autoimmune destruction of insulin producing beta cells in T1DM patients. Vitamin D has been shown to exert its effects via a nuclear vitamin D receptor (VDR) and therefore, VDR gene may be considered a candidate for T1DM susceptibility. Methods The genotypes of four VDR gene polymorphisms were determined in 253 Kuwaiti Arab T1DM patients and 214 healthy controls by PCR-RFLP analysis. Serum concentrations of three autoantibodies i.e. ICA (Islet cell autoantibody), GADA (Glutamic acid decarboxylase) and INS (Insulin autoantibody) were determined by radio-immunoassays. Results Statistically significant differences were detected between the genotypes of two VDR gene polymorphisms (FokI, C > T, rs10735810 and TaqI, C > T, rs731236) between T1DM patients and controls (P < 0.0001). In both, the frequency of variant alleles was considerably high in T1DM than in the controls. In contrast, the VDR gene ApaI (G > T, rs7975232) and BsmI (A > G, rs1544410) polymorphisms did not show association with T1DM. The homozygous variant genotypes of FokI, ApaI and TaqI polymorphisms show significant differences between various age-of-onset subgroups while no such association was detected in the case of BsmI polymorphism. Significant differences were also noted between heterozygous genotypes of all four polymorphisms especially between 4-6y and > 6y age-of-onset subgroups of T1DM patients. Three autoantibodies, ICA (Islet cell), GADA (glutamate decarboxylase) and INS (insulin) were positively associated to, varying degrees, with T1DM in Kuwaiti Arabs harboring different VDR gene polymorphism genotypes. Conclusions Our results demonstrate a significant effect of two VDR gene polymorphisms (FokI and TaqI) and three autoantibodies on genetic susceptibility of T1DM in Kuwaiti Arabs along with other factors.
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Affiliation(s)
- Majedah A Rasoul
- Department of Pediatrics, Faculty of Medicine, Kuwait University, P.O. Box 24923, Safat-13110, Jabriya, Kuwait.,Department of Pediatrics, Adan Hospital, Al-Adan, Kuwait
| | - Mohammad Z Haider
- Department of Pediatrics, Faculty of Medicine, Kuwait University, P.O. Box 24923, Safat-13110, Jabriya, Kuwait.
| | - Maria Al-Mahdi
- Department of Pediatrics, Adan Hospital, Al-Adan, Kuwait
| | - Hessa Al-Kandari
- Department of Pediatrics, Farwania Hospital, Farwania, Kuwait.,Family Medicine and Pediatric Unit, Dasman Diabetes Institute, Dasman, Kuwait
| | - Gursev S Dhaunsi
- Department of Pediatrics, Faculty of Medicine, Kuwait University, P.O. Box 24923, Safat-13110, Jabriya, Kuwait.,Medical Laboratories, Mubarak Al-Kabeer Hospital, Jabriya, Kuwait
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Jiang N, Xia W. Assessment of bone quality in patients with diabetes mellitus. Osteoporos Int 2018; 29:1721-1736. [PMID: 29736760 DOI: 10.1007/s00198-018-4532-7] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Accepted: 04/11/2018] [Indexed: 12/13/2022]
Abstract
Substantial evidence exists that diabetes mellitus is associated with an increased risk of osteoporotic fractures. Low bone strength as well as bone extrinsic factors are probably contributing to the increased bone fragility in diabetes. Bone density and quality are important determinants of bone strength. Although bone mineral density (BMD) and the fracture risk assessment tool (FRAX) are very useful clinical tools in assessing bone strength, they may underestimate the fracture risk in diabetes mellitus. Through advances in new technologies such as trabecular bone score (TBS) and peripheral quantitative computed tomography (pQCT), we can better assess the bone quality and fracture risk of patients with diabetes mellitus. Invasive assessments such as microindentation and histomorphometry have been great complement to the existing bone analysis techniques. Bone turnover markers have been found to be altered in diabetes mellitus patients and may be associated with fractures. This review will give a brief summary of the current development and clinical uses of these assessments.
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Affiliation(s)
- N Jiang
- Department of Endocrinology, Key Laboratory of Endocrinology, Ministry of Health, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Shuaifuyuan No. 1, Wangfujing, Dongcheng District, Beijing, 100730, China
| | - W Xia
- Department of Endocrinology, Key Laboratory of Endocrinology, Ministry of Health, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Shuaifuyuan No. 1, Wangfujing, Dongcheng District, Beijing, 100730, China.
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Loureiro MB, Ururahy MAG, Souza KSCD, Oliveira YMDC, Silva HPVD, Bortolin RH, Bezerra JF, Hirata RDC, Maciel-Neto JJ, Arrais RF, Almeida MDG, Hirata MH, Rezende AAD. Relationship between glycemic control and OPG gene polymorphisms with lower bone mineral density in patients with type 1 Diabetes mellitus. BRAZ J PHARM SCI 2018. [DOI: 10.1590/s2175-97902017000400060] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Ali R, Fawzy I, Mohsen I, Settin A. Evaluation of vitamin D receptor gene polymorphisms (Fok-I and Bsm-I) in T1DM Saudi children. J Clin Lab Anal 2018; 32:e22397. [PMID: 29417618 DOI: 10.1002/jcla.22397] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Accepted: 01/09/2018] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND Vitamin D deficiency conferred strongest susceptibility to pathogenesis of type 1 diabetes mellitus (T1DM). Altered gene expression and function have strong effect on VDR gene polymorphism. OBJECTIVES We aimed to check for the association of two single nucleotide polymorphisms (SNPs) in VDR gene (Fok-I and Bsm-I) with T1DM in Saudi children. SUBJECTS AND METHODS Cross-sectional study included 100 T1DM Saudi children, plus 102 unrelated healthy subjects. PCR technique was used for detection of Fok-I and Bsm-I SNPs in VDR gene. RESULTS Regarding the Fok-I polymorphisms, T1DM cases showed a significant increased frequency of the heterozygous genotype (Ff) than controls (33% vs 21%, OR = 1.9, 95% CI = 1.006-3.587, P = .04). In the meantime, they showed significantly lower frequency of the homozygous (ff) genotype (64% vs 79%, OR = 0.51, 95% CI = 0.28-0.96, P = .03). Cases showed also a significantly lower frequency of the (f) allele than controls (80.5% vs 87.7%, OR = 0.57, 95% CI = 0.33-0.995, P = .04). On the other hand, cases showed significantly higher frequency of the Bsm-I homozygous (bb) and heterozygous (Bb) genotypes (25% vs 11.8%, P = .01, OR = 2.5, 95% CI = 1.18-5.31) & (45% vs 27.5%, P = .0, OR = 2.1, 95 % CI = 1.20-3.89, respectively). Cases showed also significantly higher frequency of (b) allele compared to control (47.5% vs 25.5%, P = .0, OR = 2.6, 95% CI = 1.74-4.02). Haplotype analysis showed an increased risk with the fB and fb haplotypes. CONCLUSION This study emphasizes a positive association between SNPs (Fok-I and Bsm-I) and T1DM among Saudi children with increased risk with the Fok-I F and Bsm-I b alleles.
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Affiliation(s)
- Rabab Ali
- Clinical Laboratory Sciences Department, Faculty of Applied Medical Sciences, Taibah University, Al-Madinah Al Monawara, Saudi Arabia.,Genetics Unit Children Hospital, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Iman Fawzy
- Laboratory Medicine Department, Mansoura Fever Hospital, Ministry of Health, Mansoura, Egypt
| | - Ihsan Mohsen
- Pediatric Endocrine Division- Department of Pediatrics, Madinah Maternity & Children Hospital, King Abdullah Medical City, Al-Madinah Al Monwara, Saudi Arabia
| | - Ahmad Settin
- Pediatrics and Genetics Department, Faculty of Medicine, Mansoura University, Al-Mansoura, Egypt
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Martinez-Portilla RJ, Villafan-Bernal JR, Lip-Sosa DL, Meler E, Clotet J, Serna-Vela FJ, Velazquez-Garcia S, Serrano-Diaz LC, Figueras F. Osteocalcin Serum Levels in Gestational Diabetes Mellitus and Their Intrinsic and Extrinsic Determinants: Systematic Review and Meta-Analysis. J Diabetes Res 2018; 2018:4986735. [PMID: 30693288 PMCID: PMC6332945 DOI: 10.1155/2018/4986735] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Revised: 10/11/2018] [Accepted: 10/29/2018] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Undercarboxylated osteocalcin (ucOC) increases insulin release and insulin resistance in mice. In humans, evidence is scarce but a correlation of ucOC and total osteocalcin (tOC) with glycemic status markers has been demonstrated. The relationship of ucOC and tOC with gestational diabetes mellitus (GDM) has been even less characterized. OBJECTIVE To assess the mean difference of tOC and ucOC serum concentrations among nondiabetic pregnant women and women diagnosed as GDM in the second trimester of pregnancy and to determine the possible intrinsic and extrinsic contributors to this difference. METHODS A systematic search was performed to identify relevant studies published in English and Spanish using PubMed, SCOPUS, ISI Web of Knowledge, and PROSPERO database for meta-analysis. Observational studies measuring mean serum levels of osteocalcin among GDM, with at least 10 subjects analyzed in each group were selected. Mean difference (MD) by random effects model was used. Heterogeneity between studies was assessed using Cochran's Q, H, and I 2 statistics. RESULTS From 38 selected studies, 5 were retained for analysis for a total of 1119 pregnant women. Serum concentrations of tOC were not significantly different among women with GDM and nondiabetic pregnant controls (MD: 1.56; 95% CI: -0.70 to 3.82; p = 0.175). Meanwhile, ucOC serum levels were significantly higher among women with GDM (MD: 1.17; 95% CI: 0.24 to 2.11; p = 0.013). The only factor influencing tOC was the UV index, showing a reduction in mean difference between GDM and controls when exposed to higher concentrations of UV rays. CONCLUSIONS This meta-analysis provides evidence to support the use of ucOC as a potential marker for GDM rather than tOC, yielding very little variability among studies and no difference among methods or brands used for its analysis.
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Affiliation(s)
- Raigam J. Martinez-Portilla
- Fetal i+D Fetal Medicine Research Center, BCNatal-Barcelona Center for Maternal-Fetal and Neonatal Medicine (Hospital Clínic and Hospital Sant Joan de Déu), IDIBAPS, University of Barcelona, Spain
- Maternal-Fetal Medicine and Therapy Research Center Mexico in behalf of the Iberoamerican Research Network in Translational, Molecular and Maternal-Fetal Medicine, Mexico
| | - Jose R. Villafan-Bernal
- Mexican Consortium of Biomedicine, Biotechnology and Health Dissemination-Consortium BIO2-DIS, Mexico
- CONACYT Researcher at the Department of Surgery, Health Science Center, Autonomous University of Aguascalientes, Mexico
- Center for Health Sciences, Autonomous University of Aguascalientes, Mexico
| | - Diana L. Lip-Sosa
- Fetal i+D Fetal Medicine Research Center, BCNatal-Barcelona Center for Maternal-Fetal and Neonatal Medicine (Hospital Clínic and Hospital Sant Joan de Déu), IDIBAPS, University of Barcelona, Spain
| | - Eva Meler
- Fetal i+D Fetal Medicine Research Center, BCNatal-Barcelona Center for Maternal-Fetal and Neonatal Medicine (Hospital Clínic and Hospital Sant Joan de Déu), IDIBAPS, University of Barcelona, Spain
| | - Jordi Clotet
- Fetal i+D Fetal Medicine Research Center, BCNatal-Barcelona Center for Maternal-Fetal and Neonatal Medicine (Hospital Clínic and Hospital Sant Joan de Déu), IDIBAPS, University of Barcelona, Spain
| | | | | | | | - Francesc Figueras
- Fetal i+D Fetal Medicine Research Center, BCNatal-Barcelona Center for Maternal-Fetal and Neonatal Medicine (Hospital Clínic and Hospital Sant Joan de Déu), IDIBAPS, University of Barcelona, Spain
- Center for Biomedical Research on Rare Diseases (CIBER-ER), Madrid, Spain
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Penna-Martinez M, Badenhoop K. Inherited Variation in Vitamin D Genes and Type 1 Diabetes Predisposition. Genes (Basel) 2017; 8:genes8040125. [PMID: 28425954 PMCID: PMC5406872 DOI: 10.3390/genes8040125] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Revised: 04/11/2017] [Accepted: 04/12/2017] [Indexed: 12/17/2022] Open
Abstract
The etiology and pathophysiology of type 1 diabetes remain largely elusive with no established concepts for a causal therapy. Efforts to clarify genetic susceptibility and screening for environmental factors have identified the vitamin D system as a contributory pathway that is potentially correctable. This review aims at compiling all genetic studies addressing the vitamin D system in type 1 diabetes. Herein, association studies with case control cohorts are presented as well as family investigations with transmission tests, meta-analyses and intervention trials. Additionally, rare examples of inborn errors of vitamin D metabolism manifesting with type 1 diabetes and their immune status are discussed. We find a majority of association studies confirming a predisposing role for vitamin D receptor (VDR) polymorphisms and those of the vitamin D metabolism, particularly the CYP27B1 gene encoding the main enzyme for vitamin D activation. Associations, however, are tenuous in relation to the ethnic background of the studied populations. Intervention trials identify the specific requirements of adequate vitamin D doses to achieve vitamin D sufficiency. Preliminary evidence suggests that doses may need to be individualized in order to achieve target effects due to pharmacogenomic variation.
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Affiliation(s)
- Marissa Penna-Martinez
- Division of Endocrinology, Diabetes and Metabolism, Department of Medicine 1, University Hospital Frankfurt, Theodor-Stern-Kai 7, D-60590 Frankfurt am Main, Germany.
| | - Klaus Badenhoop
- Division of Endocrinology, Diabetes and Metabolism, Department of Medicine 1, University Hospital Frankfurt, Theodor-Stern-Kai 7, D-60590 Frankfurt am Main, Germany.
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Taskiran B, Cansu GB, Bahadir E, Mutluay R. Role of Vitamin D in Intima Media Thickness in Patients with Type 1 Diabetes Mellitus. J Natl Med Assoc 2017; 109:14-20. [PMID: 28259209 DOI: 10.1016/j.jnma.2017.01.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2016] [Revised: 12/26/2016] [Accepted: 01/06/2017] [Indexed: 12/24/2022]
Abstract
Increased carotid intima media thickness indicates subclinical atherosclerosis. We evaluated the relation between vitamin D level and intima media thickness in patients with type 1 DM. 93 patients (female/male: 48/45, aged 31.5 ± 11.9 years, A1c 9.48 ± 2.43, vitamin D [15.9 (12.1-19.2)]) with type 1 DM were included into the study. Common carotid artery IMT was measured by real time B mode ultrasonography (MyLab 70 XVG, Esaote SpA, Genoa, Italy). Vitamin D was measured using radioimmunassay. Male and female patients (n = 14, 15%) had similar rates of plaque presence (p = 0.377). IMT was similar according to gender. IMT [0.45 (0.40-0.50)] was positively correlated with age, duration of diabetes, creatinine, LDL/HDL ratio, and ALP. Median IMT was higher in current smokers, patients with retinopathy, and nephropathy, and overweight/obese patients. IMT was not different according to vitamin D status. However calcium level corrected for albumin was in positive correlation with mean IMT (r = 0.221, p = 0.033). We detected high frequency of vitamin D deficiency (78%) defined as less than 20 ng/ml. Vitamin D and diabetes control defined as A1c have no effect on intima media thickness in type 1 DM. Traditional cardiovascular risk factors including age, duration of DM, smoking, and BMI adversely affect intima media thickness.
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Affiliation(s)
- Bengur Taskiran
- Department of Endocrinology, Yunus Emre State Hospital, Eskisehir, Turkey.
| | - Guven B Cansu
- Department of Endocrinology, Yunus Emre State Hospital, Eskisehir, Turkey
| | - Eylem Bahadir
- Department of Radiology, Yunus Emre State Hospital, Eskisehir, Turkey
| | - Ruya Mutluay
- Department of Nephrology, Yunus Emre State Hospital, Eskisehir, Turkey
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12
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TaqI, FokI, and ApaI Polymorphisms in the Vitamin D Receptor in Behçet's Disease in Turkish Population. DISEASE MARKERS 2016; 2016:7475080. [PMID: 27688524 PMCID: PMC5023821 DOI: 10.1155/2016/7475080] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Revised: 08/04/2016] [Accepted: 08/09/2016] [Indexed: 11/17/2022]
Abstract
Objectives. In our study we aimed to determine VDR gene polymorphisms in patients with Behçet's disease (BD) and neuro-Behçet's disease (NBD) in Turkish population. Methods. PBL obtained from 37 patients with BD, 21 patients with NB, and 30 healthy controls were investigated. Genomic DNA was extracted from whole blood using the QIAamp Blood Kit. VDR ApaI (rs7975232), VDR FokI (rs2228570), and VDR TaqI (rs731236) genotyping was performed by real-time polymerase chain reaction with SimpleProbe melting-curve analysis. Results. The allelic and genotype distributions of FokI and TaqI polymorphisms were not different among Behçet's disease, neuro-Behçet's disease, and control subjects in Turkish population (p > 0.05). Only the frequency of ApaI A allele in control is higher than that in BD (60% versus 38.5%), and the p value is 0.014, but the power is not enough to conclude that ApaI A allele is protective in BD in our study. Taken together, we found no significant differences between the BD, NBD, and control groups regarding the distribution of ApaI, TaqI, and FokI genotype and alleles frequencies. Conclusions. Future studies with larger patients' numbers may show differences between VDR polymorphisms and Behçet's disease.
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Al-Eisa AA, Haider MZ. Vitamin D receptor gene TaqI and Apal polymorphisms and steroid responsiveness in childhood idiopathic nephrotic syndrome. Int J Nephrol Renovasc Dis 2016; 9:187-92. [PMID: 27540309 PMCID: PMC4981166 DOI: 10.2147/ijnrd.s111538] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Background Vitamin D activity is controlled by vitamin D receptors (VDRs), which are affected by different genetic polymorphisms, including TaqI and Apal restriction fragment length polymorphisms (RFLPs), which have been reported to be associated with several diseases. The aim of this study was to determine the frequency and the association of VDR gene polymorphisms with idiopathic nephrotic syndrome (INS) and steroid responsiveness in Kuwaiti children. Subjects and methods Genotypes of the VDR TaqI gene polymorphism and the Apal gene polymorphism were analyzed using polymerase chain reaction-RFLP in 78 INS patients and 56 matched controls. Results A total of 78 INS (62 steroid sensitive [SS] and 16 steroid resistant [SR]) patients with a mean age of 6.5±3.1 years were studied. Male:female ratio was 2:1. The TT genotype of VDR–TaqI polymorphism was detected in 41% of the INS patients compared to 42% of the controls (P=0.816). The heterozygous TC genotype was detected in 33% of INS patients compared to 46% of the controls (P=0.462). The CC genotype was detected in 25.6% of INS patients and 21% of the controls (P=0.719). The C-allele frequency, in its homozygous and heterozygous forms, was 71% in INS patients compared to 63% in the controls (P=0.342). Similarly, no significant difference was detected in terms of VDR–Apal polymorphism in INS patients compared to the controls for all the three genotypes (P=0.76, P=0.207, and P=0.364, respectively, for GG, GT, and TT genotypes). The T-allele frequency, in its homozygous and heterozygous forms, was 89% in INS patients compared to 93% in the controls (P=0.076). No significant difference was found in any of the allele frequencies between SS and SR subgroups when compared with each other or when compared to the controls. Conclusion Our data do not support the use of VDR–TaqI or –Apal gene polymorphisms as genetic markers of INS nor do they predict steroid responsiveness in children with the disease.
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Affiliation(s)
- Amal A Al-Eisa
- Department of Pediatrics, Faculty of Medicine, Kuwait University, Safat, Kuwait
| | - Mohammad Z Haider
- Department of Pediatrics, Faculty of Medicine, Kuwait University, Safat, Kuwait
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Shen L, Zhuang QS, Ji HF. Assessment of vitamin D levels in type 1 and type 2 diabetes patients: Results from metaanalysis. Mol Nutr Food Res 2016; 60:1059-67. [DOI: 10.1002/mnfr.201500937] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2015] [Revised: 01/18/2016] [Accepted: 02/01/2016] [Indexed: 01/08/2023]
Affiliation(s)
- Liang Shen
- Shandong Provincial Research Center for Bioinformatic Engineering and Technique; School of Life Sciences; Shandong University of Technology; Zibo P. R. China
| | - Qi-Shuai Zhuang
- Shandong Provincial Research Center for Bioinformatic Engineering and Technique; School of Life Sciences; Shandong University of Technology; Zibo P. R. China
| | - Hong-Fang Ji
- Shandong Provincial Research Center for Bioinformatic Engineering and Technique; School of Life Sciences; Shandong University of Technology; Zibo P. R. China
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Yamout B, Karaky NM, Mahfouz RAR, Jaber F, Estaitieh N, Shamaa D, Abbas F, Hoteit R, Daher RT. Vitamin D receptor biochemical and genetic profiling and HLA-class II genotyping among Lebanese with multiple sclerosis - A pilot study. J Neuroimmunol 2016; 293:59-64. [PMID: 27049563 DOI: 10.1016/j.jneuroim.2016.02.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2015] [Accepted: 02/09/2016] [Indexed: 10/22/2022]
Abstract
BACKGROUND Multiple sclerosis (MS) is an autoimmune demyelinating disease affecting mostly young adult females with multifactorial etiology. Recent studies suggested that adequate vitamin D levels may lower the risk of developing MS. OBJECTIVES Our aim was to explore the relationship between vitamin D receptor (VDR) polymorphism, HLA-DR locus genotype, and serum vitamins D and A levels in the Lebanese population. METHODS Fifty MS patients were recruited for this study. The control group consisted of 48 healthy and 51 patients with other neurological disorders (non-MS). Biochemical analysis included serum 25 hydroxyvitamin D (25OHD) and vitamin A. Molecular analysis targeted VDR genotypes (ApaI, TaqI and BsmI) and low resolution HLA typing for DRB1 locus. RESULTS Healthy and non-MS groups had comparable parameters and were combined into one control group. No significant differences were found between MS and control groups for VDR genotypes. The frequency of HLA-DRB1*15 was significantly higher in MS patients (22%) compared to controls (8%) (p=0.018). Odds ratio for MS in the presence of DRB1*15 allele was 3.21 (p=0.018). Cosegregation with A (ApaI) and b (BsmI) alleles did not influence the risk for MS. 25OHD levels were significantly higher in MS patients compared to controls (p=0.002), due to more frequent oral supplementation (p=0.005). Vitamin A levels were comparable between the two groups. When all parameters were included in a logistic regression model adjusted for supplementation, only HLA-DRB1*15 (OR=3.42; p=0.027) contributed significantly to MS risk. CONCLUSION There was no association between serum vitamin D or A or VDR genotypes and MS. HLA-DRB1*15 was the major factor imposing more than 3 folds greater risk for developing MS among Lebanese.
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Affiliation(s)
- Bassem Yamout
- Multiple Sclerosis Center, Department of Neurology, American University of Beirut Medical Center, Lebanon
| | - Nathalie M Karaky
- Department of Pathology and Laboratory Medicine, American University of Beirut Medical Center, Lebanon
| | - Rami A R Mahfouz
- Department of Pathology and Laboratory Medicine, American University of Beirut Medical Center, Lebanon
| | - Fadel Jaber
- Department of Pathology and Laboratory Medicine, American University of Beirut Medical Center, Lebanon
| | - Nour Estaitieh
- Department of Neurology, American University of Beirut Medical Center, Lebanon
| | - Dina Shamaa
- Department of Pathology and Laboratory Medicine, American University of Beirut Medical Center, Lebanon
| | - Fatmeh Abbas
- Department of Pathology and Laboratory Medicine, American University of Beirut Medical Center, Lebanon
| | - Rouba Hoteit
- Department of Pathology and Laboratory Medicine, American University of Beirut Medical Center, Lebanon
| | - Rose T Daher
- Department of Pathology and Laboratory Medicine, American University of Beirut Medical Center, Lebanon.
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Bienertová-Vašků J, Drábová K, Zlámal F, Tomandl J, Kýr M, Šplíchal Z, Štěrba J. Pre-treatment VD levels and VDR receptors as potential predictors of occurrence and overall survival in paediatric patients with solid tumours-a single institution pilot study. Tumour Biol 2016; 37:9209-19. [PMID: 26768618 DOI: 10.1007/s13277-016-4820-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Accepted: 01/08/2016] [Indexed: 12/12/2022] Open
Abstract
Recently, vitamin D has been recognized as an important player in the immune system, and multiple studies suggested its involvement in cancer, too. The aims of this study were to investigate selected single nucleotide polymorphisms (SNPs) in the VDR gene, BsmI (rs1544410; A > G), FokI (rs 2228570; C > T), TaqI (rs731236; T > C), ApaI (rs 7975232; C > T) and Cdx-2 (rs11568820; A > G), and to evaluate their possible predictive role for outcomes in patients with paediatric solid tumours. A total of 111 children with paediatric solid tumours were enrolled at the Department of Paediatric Oncology, University Hospital Brno (Brno, Czech Republic) along with a control population of 787 adults; all study subjects were available for genotyping of selected SNPs, and the prediagnostic levels of 25-hydroxycholecalciferol (25(OH)D3) and 1,25-dihydroxycholecalciferol (1,25(OH)2D3) were measured in the cases, too. In FokI, the heterozygote CT genotype was weakly associated with a decreased risk of paediatric solid cancer occurrence 0.82 (0.53-1.28), while the CC genotype was associated with a decreased risk of 0.58 (0.30-1.09), p = 0.09. The 1,25(OH)2D3 prediagnostic levels were indicative of the overall survival in the cases (β = -0.012, HR 0.988, 95 % CI (0.978-0.998), while higher prediagnostic levels of 1,25(OH)2D3 were associated with a statistically significant increase in overall mortality. We observed multiple effects of the alleles of the investigated polymorphisms and of 1,25(OH)2D3 on overall survival, regardless of the underlying disease.
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Affiliation(s)
- Julie Bienertová-Vašků
- Department of Pathological Physiology, Faculty of Medicine, Masaryk University, Kamenice 5, Building A18, 625 00, Brno, Czech Republic. .,Department of Paediatric Oncology, University Hospital Brno, Černopolní 22, Brno, 613 00, Czech Republic. .,Research Centre for Toxic Compounds in the Environment, Masaryk University, Kamenice 5, A29, Brno, 625 00, Czech Republic.
| | - Klára Drábová
- Department of Paediatric Oncology, University Hospital Brno, Černopolní 22, Brno, 613 00, Czech Republic
| | - Filip Zlámal
- Department of Pathological Physiology, Faculty of Medicine, Masaryk University, Kamenice 5, Building A18, 625 00, Brno, Czech Republic.,Research Centre for Toxic Compounds in the Environment, Masaryk University, Kamenice 5, A29, Brno, 625 00, Czech Republic
| | - Josef Tomandl
- Department of Biochemistry, Faculty of Medicine, Masaryk University, Kamenice 5, Building A16, 625 00, Brno, Czech Republic
| | - Michal Kýr
- Department of Paediatric Oncology, University Hospital Brno, Černopolní 22, Brno, 613 00, Czech Republic
| | - Zbyněk Šplíchal
- Department of Pathological Physiology, Faculty of Medicine, Masaryk University, Kamenice 5, Building A18, 625 00, Brno, Czech Republic
| | - Jaroslav Štěrba
- Department of Paediatric Oncology, University Hospital Brno, Černopolní 22, Brno, 613 00, Czech Republic
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Feng R, Li Y, Li G, Li Z, Zhang Y, Li Q, Sun C. Lower serum 25 (OH) D concentrations in type 1 diabetes: A meta-analysis. Diabetes Res Clin Pract 2015; 108:e71-5. [PMID: 25836943 DOI: 10.1016/j.diabres.2014.12.008] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/23/2014] [Revised: 10/28/2014] [Accepted: 12/29/2014] [Indexed: 02/01/2023]
Abstract
OBJECTIVE Vitamin D may have protective effects against type 1 diabetes (T1D). However, the results of current cross-sectional studies have been inconsistent. We aimed to examine the association of serum vitamin D and T1D by conducting a meta-analysis. METHODS Multiple databases were searched until April 2014 to identify relevant studies. The search term was "serum vitamin D" and "type 1 diabetes". Random effects model was used to calculate the pooled risk estimate. The data were accessed by software Review manager 5.2. RESULTS We included a total of 23 studies (11 studies with 1900 participants of children or adolescents and 13 studies with 3494 participants of adults) in our meta-analysis. In children or adolescents, serum 25(OH) D in T1D was 5.69 ng/ml [95% confidence interval (CI) (2.82-8.55, P<0.0001) lower than in healthy controls. In adults, serum 25(OH) D in T1D was 2.61 ng/ml [95% confidence interval (CI) (1.13-4.09, P=0.0005) lower than in healthy controls. We did not find evidence of publication bias. CONCLUSION Serum 25OHD is significantly lower in patients with T1D than in healthy controls.
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Affiliation(s)
- Rennan Feng
- Department of Nutrition and Food Hygiene, School of Public Health, Harbin Medical University, Harbin, China; National Key Discipline, Harbin Medical University, Harbin, China
| | - Yanchuan Li
- Department of Nutrition and Food Hygiene, School of Public Health, Harbin Medical University, Harbin, China; National Key Discipline, Harbin Medical University, Harbin, China
| | - Guoqiang Li
- Dean Office, Harbin Medical University, Harbin, China
| | - Zhen Li
- Department of Nutrition and Food Hygiene, School of Public Health, Harbin Medical University, Harbin, China; National Key Discipline, Harbin Medical University, Harbin, China
| | - Yingfeng Zhang
- Department of Nutrition and Food Hygiene, School of Public Health, Harbin Medical University, Harbin, China; National Key Discipline, Harbin Medical University, Harbin, China
| | - Qiang Li
- Department of Endocrinology, Second Affiliated Hospital of Harbin Medical University, Harbin, China.
| | - Changhao Sun
- Department of Nutrition and Food Hygiene, School of Public Health, Harbin Medical University, Harbin, China; National Key Discipline, Harbin Medical University, Harbin, China.
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Labudzynskyi DO, Lisakovska OA, Shymanskyy IA, Riasnyi VM, Veliky NN. [The role of vitamin D3 in the regulation of the mineral metabolism in experimental type 1 diabetes]. BIOMEDIT︠S︡INSKAI︠A︡ KHIMII︠A︡ 2014; 60:567-75. [PMID: 25386886 DOI: 10.18097/pbmc20146005567] [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: 11/23/2022]
Abstract
Diabetes was shown to be associated with a considerable lowering of 25(OH)D3 in blood serum of mice. Vitamin D3 deficiency was correlated with impaired mineral metabolism in bone tissue, indicating the development of secondary osteoporosis. A decrease in weight, length and diameter (diaphysis, proximal metaepiphysis) of tibia in diabetic animals was observed as compared with control. Diabetes caused hypocalcemia, hypophosphatemia and increased enzymatic activity of alkaline phosphatase (ALP) and its isoenzymes in serum. This changes were accompanied by the impairments of vitamin D3 25-hydroxylase isoforms (CYP27A1 and CYP2R1) expression, which are the main enzymes of cholecalciferol biotransformation to 25(OH)D3 - precursor of hormonally active form of vitamin D3. A decrease in bone resorption processes was established after vitamin D3 administration as it is evident from normalization of bone morphometrical parameters and mineral metabolism in diabetic mice. Vitamin D3 ability to counter diabetes-induced alterations in bone tissue can be ascribed, at least in part, to its positive effects on the formation of vitamin D3 hormonally active forms.
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Pan H, Wu N, Yang T, He W. Association between bone mineral density and type 1 diabetes mellitus: a meta-analysis of cross-sectional studies. Diabetes Metab Res Rev 2014; 30:531-42. [PMID: 24376190 DOI: 10.1002/dmrr.2508] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2013] [Revised: 11/13/2013] [Accepted: 12/03/2013] [Indexed: 12/25/2022]
Abstract
A few studies have investigated the relationship between type 1 diabetes mellitus (T1DM) and bone mineral density (BMD) values. This meta-analysis was performed to explore differences between T1DM and healthy individuals in BMD values measured at five bone sites.We searched the database of PubMed for cross-sectional studies about the association of T1DM and BMD, and a meta-analysis was conducted.The results suggested significant association between T1DM and decreased BMD values of total body. The pooled mean differences (MDs) were -0.06 [95% confidence interval (CI): -0.11, -0.01] for all people. As for the association between T1DM and spine BMD values, the pooled MDs were -0.04 (95% CI: -0.07, -0.01) for males and -0.03 (95% CI: -0.06, 0.00) for females <20 years old. As for femur BMD values, the pooled MDs were -0.06 (95% CI: -0.13, 0.00) for all people, -0.03 (95% CI: -0.06, -0.01) for females and -0.04(95% CI: -0.05, -0.02) for males. As for hip BMD values, the pooled MDs were -0.06 (95% CI: -0.08, -0.04) for females. As for forearm BMD values, the pooled MDs were -0.01 (95% CI: -0.02, 0.00) for females.The results of this meta-analysis suggest the overall association between T1DM and reduced BMD values. Notably, the influence of T1DM on BMD seems to depend on gender or patient's age. Reduced BMD values may occur early after T1DM diagnosis. Future clinical and basic research studies are needed to further understand the mechanisms of decreased BMD values in T1DM patients.
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Affiliation(s)
- Hong Pan
- Department of Breast Surgery, The First Affiliated Hospital with Nanjing Medical University, 300 Guangzhou Road, 210029, Nanjing, China
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20
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Yang CY, Leung PSC, Adamopoulos IE, Gershwin ME. The implication of vitamin D and autoimmunity: a comprehensive review. Clin Rev Allergy Immunol 2014; 45:217-26. [PMID: 23359064 DOI: 10.1007/s12016-013-8361-3] [Citation(s) in RCA: 178] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Historically, vitamin D has been associated with the regulation of bone metabolism. However, increasing evidence demonstrates a strong association between vitamin D signaling and many biological processes that regulate immune responses. The discovery of the vitamin D receptor in multiple immune cell lineages, such as monocytes, dendritic cells, and activated T cells credits vitamin D with a novel role in modulating immunological functions and its subsequent role in the development or prevention of autoimmune diseases. In this review we, discuss five major areas in vitamin D biology of high immunological significance: (1) the metabolism of vitamin D; (2) the significance of vitamin D receptor polymorphisms in autoimmune diseases, such as multiple sclerosis, type 1 diabetes mellitus, and systemic lupus erythematosus; (3) vitamin D receptor transcriptional regulation of immune cell lineages, including Th1, Th17, Th2, regulatory T, and natural killer T cells; (4) the prevalence of vitamin D insufficiency/deficiency in patients with multiple sclerosis, type 1 diabetes mellitus, and systemic lupus erythematosus; and finally, (5) the therapeutic effects of vitamin D supplementation on disease severity and progression.
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Affiliation(s)
- Chen-Yen Yang
- Division of Rheumatology, Allergy and Clinical Immunology, University of California at Davis School of Medicine, 451 Health Sciences Drive, Suite 6510, Davis, CA, 95616, USA
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Qin WH, Wang HX, Qiu JL, Huang XB, Huang Y, Wu NR, Liang HS. A meta-analysis of association of vitamin D receptor BsmI gene polymorphism with the risk of type 1 diabetes mellitus. J Recept Signal Transduct Res 2014; 34:372-7. [PMID: 24665917 DOI: 10.3109/10799893.2014.903420] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Association between vitamin D receptor (VDR) BsmI (rs1544410) gene polymorphism and the risk of type 1 diabetes mellitus (T1DM) from the published reports are still conflicting. This study was conducted to evaluate the relationship between VDR BsmI gene polymorphism and the risk of T1DM using meta-analysis method. The association studies were identified from PubMed, and Cochrane Library on 1 December 2013, and eligible investigations were included and synthesized using meta-analysis method. Twenty-three reports were recruited into this meta-analysis for the association of VDR BsmI gene polymorphism with T1DM susceptibility. In overall populations, bb genotype was associated with T1DM, but the B allele and BB genotype were not. In Asians and Latino population, B allele and bb genotype were associated with TIDM risk, but BB genotype was not. In Caucasians, VDR BsmI gene polymorphism was not associated with the T1DM risk. In Africans, B allele and BB genotype were associated with T1DM risk, but the bb genotype was not. However, the sample size for Latino population and Africans was small. In conclusion, VDR BsmI B allele, bb genotype was associated with T1DM risk in Asians, and bb genotype was associated with T1DM risk in overall populations. However, more studies should be conducted to confirm it.
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Affiliation(s)
- Wei-Hong Qin
- Department of Endocrinology, People's Hospital of Beihai , Beihai , China
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22
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Wang G, Zhang Q, Xu N, Xu K, Wang J, He W, Yang T. Associations between two polymorphisms (FokI and BsmI) of vitamin D receptor gene and type 1 diabetes mellitus in Asian population: a meta-analysis. PLoS One 2014; 9:e89325. [PMID: 24603699 PMCID: PMC3945782 DOI: 10.1371/journal.pone.0089325] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2013] [Accepted: 01/19/2014] [Indexed: 11/18/2022] Open
Abstract
Background Vitamin D receptor (VDR) gene polymorphisms are possibly involved in the development of type 1 diabetes mellitus (T1DM). However, the results to date have been inconclusive. We performed a meta-analysis to examine the association between 2 polymorphisms (FokI and BsmI) of the VDR gene and T1DM in the Asian population. Methods Literature was retrieved from PubMed, Web of Science, CBM, Embase and Chinese databases. Pooled odds ratios (ORs) with 95% confidence intervals (CIs) were calculated using a random or fixed effect model. Results In total, 20 papers (BsmI: 13 studies; FokI: 13 studies) were included. In contrast to the FokI polymorphism, the BsmI polymorphism was associated with an increased risk of T1DM in the Asian population (OR = 1.47, 95% CI = 1.13–1.91, P = 0.004 for B vs. b). Upon stratification by regional geography, an increased risk of T1DM in association with the BsmI polymorphism was observed in the East Asian population (OR = 1.97, 95% CI = 1.38–2.83, P<0.001 for B vs. b), whereas the FokI polymorphism was associated with an increased risk of T1DM in the West Asian population (OR = 1.45, 95% CI = 1.12–1.88, P = 0.004 for F vs. f). Conclusions Our meta-analysis suggests that the BsmI polymorphism may be a risk factor for susceptibility to T1DM in the East Asian population, and the FokI polymorphism is associated with an increased risk of T1DM in the West Asian population. However, because the study size was limited, further studies are essential to confirm our results.
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Affiliation(s)
- Guofeng Wang
- Department of Endocrinology Medicine, Lianyungang First People’s Hospital, Affiliated Hospital of Xuzhou Medical College, Lianyungang, China
| | - Qingqing Zhang
- Department of Endocrinology Medicine, The Fist Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Ning Xu
- Department of Endocrinology Medicine, Lianyungang First People’s Hospital, Affiliated Hospital of Xuzhou Medical College, Lianyungang, China
| | - Kuanfeng Xu
- Department of Endocrinology Medicine, The Fist Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Jian Wang
- Department of Endocrinology Medicine, The Fist Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Wei He
- Department of Endocrinology Medicine, The Fist Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Tao Yang
- Department of Endocrinology Medicine, The Fist Affiliated Hospital of Nanjing Medical University, Nanjing, China
- * E-mail:
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Singh K, Kumar R, Shukla A, Phadke SR, Agarwal S. Status of 25-hydroxyvitamin D deficiency and effect of vitamin D receptor gene polymorphisms on bone mineral density in thalassemia patients of North India. Hematology 2013; 17:291-6. [DOI: 10.1179/1607845412y.0000000017] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Affiliation(s)
- Kritanjali Singh
- Department of GeneticsSanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, India
| | - Ravindra Kumar
- Department of GeneticsSanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, India
| | - Anju Shukla
- Department of GeneticsSanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, India
| | - Shubha R. Phadke
- Department of GeneticsSanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, India
| | - Sarita Agarwal
- Department of GeneticsSanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, India
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Chakhtoura M, Azar ST. The role of vitamin d deficiency in the incidence, progression, and complications of type 1 diabetes mellitus. Int J Endocrinol 2013; 2013:148673. [PMID: 23573085 PMCID: PMC3610375 DOI: 10.1155/2013/148673] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2012] [Revised: 01/23/2013] [Accepted: 01/29/2013] [Indexed: 12/17/2022] Open
Abstract
The "nonclassic" role of 1,25-dihydroxyvitamin D3 (1,25(OH)2D3) has been recently widely recognized. In type 1 diabetes mellitus (T1D), it plays an immunomodulatory role through the vitamin D receptor (VDR) present on pancreatic and immune cells. Specific VDR allelic variants have been associated with T1D in many countries. Furthermore, vitamin D deficiency has been prevalent in T1D, and the seasonal and latitude variability in the incidence of T1D can be partly explained by the related variability in vitamin D level. In fact, retrospective studies of vitamin D supplementation during pregnancy or infancy showed a lower incidence of T1D. We will review the different mechanisms of the vitamin D protective effect against insulitis and present the available data on the role of vitamin D deficiency in the control, progression, and complications of T1D.
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Zhang J, Li W, Liu J, Wu W, Ouyang H, Zhang Q, Wang Y, Liu L, Yang R, Liu X, Meng Q, Lu J. Polymorphisms in the vitamin D receptor gene and type 1 diabetes mellitus risk: an update by meta-analysis. Mol Cell Endocrinol 2012; 355:135-42. [PMID: 22361322 DOI: 10.1016/j.mce.2012.02.003] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2011] [Revised: 02/03/2012] [Accepted: 02/07/2012] [Indexed: 11/26/2022]
Abstract
Four well known polymorphisms (BsmI, FokI, ApaI, TaqI) in the VDR gene have been implicated in susceptibility to type 1 diabetes mellitus (T1DM), but the results to date have been inconclusive. The aim of this study was to investigate the association between polymorphisms in the VDR gene and T1DM risk by meta-analysis. A total of 57 case-control studies in 26 published studies were included. The results indicated that the BsmI polymorphism is associated with increased risk of T1DM (BB+Bb vs. bb: OR=1.30, 95% CI=1.03-1.63), while the FokI, ApaI and TaqI polymorphisms were not. In the subgroup analysis by ethnicity, the increased risk of T1DM remained in the Asian subgroup for the BsmI polymorphism; whereas no significant association was found in other populations for other polymorphisms. Results from the current study suggest that the BsmI polymorphism is associated with increased risk of T1DM, especially in Asians. Further studies are needed to confirm our results.
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Affiliation(s)
- Jie Zhang
- Key Laboratory of Laboratory Medicine, Ministry of Education, Zhejiang Provincial Key Laboratory of Medical Genetics, Wenzhou Medical College, Wenzhou, Zhejiang 325035, China
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