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Shang QX, Yang YS, Zhang HL, Cheng YP, Lu H, Yuan Y, Chen LQ, Ji AF. Vitamin D receptor induces oxidative stress to promote esophageal squamous cell carcinoma proliferation via the p53 signaling pathway. Heliyon 2024; 10:e23832. [PMID: 38234882 PMCID: PMC10792188 DOI: 10.1016/j.heliyon.2023.e23832] [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: 05/16/2023] [Revised: 12/05/2023] [Accepted: 12/13/2023] [Indexed: 01/19/2024] Open
Abstract
Background Esophageal squamous cell carcinoma (ESCC) is a common pathological esophageal cancer with poor prognosis. Vitamin D deficiency reportedly occurs in ESCC patients, and this is related to single nucleotide polymorphism of vitamin D receptor (VDR). Objective We investigated the effect of VDR on ESCC proliferation, invasion, and metastasis and its potential mechanism. Methods ESCC and normal tissues were collected from 20 ESCC patients. The ESCC tissue microarray contained 116 pairs of ESCC and normal tissues and 73 single ESCC tissues. VDR expression and its clinicopathological role were determined by real-time quantitative polymerase chain reaction, Western blot, and immunohistochemistry staining. sh-VDR and VDR overexpression were used to validate the effect of VDR on ESCC cell phenotype, and tandem mass tag-based quantitative proteomics and bioinformatics methods identified differential VDR-related proteins. The downstream pathway and regulatory effect were analyzed using ingenuity pathway analysis (IPA). Differentially expressed proteins were verified through parallel reaction monitoring and Western blot. In vivo imaging visualized subcutaneous tumor growth following tail vein injection of VDR-deficient ESCC cells. Results High VDR expression was observed in ESCC tissues and cells. Gender, T stage, and TNM stage were related to VDR expression, which was the independent prognostic factor related to ESCC. VDR downregulation repressed ESCC cell proliferation, invasion, and migration in vitro and subcutaneous tumor growth and lung metastases in vivo. The cell phenotype changes were reversed upon VDR upregulation, and differential proteins were mainly enriched in the p53 signaling pathway. TP53 cooperated with ABCG2, APOE, FTH1, GCLM, GPX1, HMOX1, JUN, PRDX5, and SOD2 and may activate apoptosis and inhibit oxidative stress, cell metastasis, and proliferation. TP53 was upregulated after VDR knockdown, and TP53 downregulation reversed VDR knockdown-induced cell phenotype changes. Conclusions VDR may inhibit p53 signaling pathway activation and induce ESCC proliferation, invasion, and metastasis by activating oxidative stress.
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Affiliation(s)
- Qi-Xin Shang
- Department of Thoracic Surgery, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Yu-Shang Yang
- Department of Thoracic Surgery, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Han-Lu Zhang
- Department of Thoracic Surgery, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Ya-Ping Cheng
- Heping Hospital Affiliated to Changzhi Medical University, No. 161 Jiefang East Street, Changzhi, 046000, China
| | - Han Lu
- Heping Hospital Affiliated to Changzhi Medical University, No. 161 Jiefang East Street, Changzhi, 046000, China
| | - Yong Yuan
- Department of Thoracic Surgery, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Long-Qi Chen
- Department of Thoracic Surgery, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Ai-Fang Ji
- Heping Hospital Affiliated to Changzhi Medical University, No. 161 Jiefang East Street, Changzhi, 046000, China
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Li Y, Zhao P, Jiang B, Liu K, Zhang L, Wang H, Tian Y, Li K, Liu G. Modulation of the vitamin D/vitamin D receptor system in osteoporosis pathogenesis: insights and therapeutic approaches. J Orthop Surg Res 2023; 18:860. [PMID: 37957749 PMCID: PMC10644527 DOI: 10.1186/s13018-023-04320-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Accepted: 10/25/2023] [Indexed: 11/15/2023] Open
Abstract
Osteoporosis is a prevalent bone disorder characterized by low bone mineral density (BMD) and deteriorated bone microarchitecture, leading to an increased risk of fractures. Vitamin D (VD), an essential nutrient for skeletal health, plays a vital role in maintaining bone homeostasis. The biological effects of VD are primarily mediated through the vitamin D receptor (VDR), a nuclear receptor that regulates the transcription of target genes involved in calcium and phosphate metabolism, bone mineralization, and bone remodeling. In this review article, we conduct a thorough literature search of the PubMed and EMBASE databases, spanning from January 2000 to September 2023. Utilizing the keywords "vitamin D," "vitamin D receptor," "osteoporosis," and "therapy," we aim to provide an exhaustive overview of the role of the VD/VDR system in osteoporosis pathogenesis, highlighting the most recent findings in this field. We explore the molecular mechanisms underlying VDR's effects on bone cells, including osteoblasts and osteoclasts, and discuss the impact of VDR polymorphisms on BMD and fracture risk. Additionally, we examine the interplay between VDR and other factors, such as hormonal regulation, genetic variants, and epigenetic modifications, that contribute to osteoporosis susceptibility. The therapeutic implications of targeting the VDR pathway for osteoporosis management are also discussed. By bringing together these diverse aspects, this review enhances our understanding of the VD/VDR system's critical role in the pathogenesis of osteoporosis and highlights its significance as a potential therapeutic target.
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Affiliation(s)
- Yanqi Li
- Central Laboratory, Huabei Petroleum Administration Bureau General Hospital, Huidaozhan Avenue, Renqiu City, 062552, Hebei Province, China
| | - Pengfei Zhao
- Central Laboratory, Huabei Petroleum Administration Bureau General Hospital, Huidaozhan Avenue, Renqiu City, 062552, Hebei Province, China
| | - Biyun Jiang
- Central Laboratory, Huabei Petroleum Administration Bureau General Hospital, Huidaozhan Avenue, Renqiu City, 062552, Hebei Province, China
| | - Kangyong Liu
- Biotecnovo (Beijing) Co. Ltd., Building 12, Yard 20, Guangde Street, Beijing Economic and Technological Development Zone, Beijing, 100176, China
| | - Lei Zhang
- Biotecnovo (Beijing) Co. Ltd., Building 12, Yard 20, Guangde Street, Beijing Economic and Technological Development Zone, Beijing, 100176, China
| | - Haotian Wang
- Clinical School of Medicine, North China University of Science and Technology, Tangshan, 063000, Hebei, China
| | - Yansheng Tian
- Central Laboratory, Huabei Petroleum Administration Bureau General Hospital, Huidaozhan Avenue, Renqiu City, 062552, Hebei Province, China.
| | - Kun Li
- No.1 Department of Orthopedics, Langfang People's Hospital, No 37, Xinhua Rd, Langfang, 065000, Heibei, China.
| | - Guoqi Liu
- Biotecnovo (Beijing) Co. Ltd., Building 12, Yard 20, Guangde Street, Beijing Economic and Technological Development Zone, Beijing, 100176, China.
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Yang M, Ji W, Xu N, zong C, Gu J, Guo X, Zhang L. Association of vitamin D receptor polymorphisms with colorectal cancer susceptibility: A systematic meta-analysis. Medicine (Baltimore) 2023; 102:e32575. [PMID: 36607855 PMCID: PMC9829264 DOI: 10.1097/md.0000000000032575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND Recent studies have reported an association between vitamin D receptor (VDR) polymorphisms and colorectal cancer (CRC) risk; however, the results are controversial. This meta-analysis was performed to investigate whether the Cdx-2, Tru9I, FokI, BsmI, TaqI, and ApaI polymorphisms were correlated with CRC susceptibility. METHODS All potential studies were retrieved by searching the PubMed, EMBASE, and Cochrane Library databases through October 2, 2021. Odds ratios (ORs) with 95% confidence intervals were used to evaluate the correlation between VDR gene Cdx-2, Tru9I, FokI, BsmI, TaqI, and ApaI polymorphisms and CRC risk. RESULTS In this meta-analysis, the BsmI variant was significantly correlated with a lower risk of CRC, especially in Caucasian population (B vs b: OR 0.94, 95%CI 0.90-0.99; BB vs bb: OR 0.88; 95%CI 0.79-0.97; BB vs Bb/bb: BB vs Bb/bb: OR 0.89; 95%CI 0.81-0.98). A statistically significant result from the FokI polymorphism was observed in colon cancer rather than rectal cancer (Ff vs FF: OR 0.86, 95%CI 0.84-0.93; ff/Ff vs FF: OR 0.88, 95%CI 0.79-0.98; ff vs Ff/FF: OR 0.90, 95%CI 0.82-0.99). Similarly, Cdx-2 polymorphism was found to be associated with decreased CRC risk among Africans (C vs c: OR 0.50, 95%CI 0.33-0.75; CC vs cc: OR 0.09, 95%CI 0.01-0.77; Cc vs cc: OR 0.49, 95%CI 0.30-0.81; CC/Cc vs cc: OR 0.45, 95%CI 0.28-0.74,). CONCLUSION Our findings indicate that VDR polymorphisms are significantly associated with CRC risk.
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Affiliation(s)
- Maoquan Yang
- Department of Gastroenterology, Affiliated Hospital of Weifang Medical University, Weifang, China
- School of Clinical Medicine, Weifang Medical University, Weifang, China
| | - Wansheng Ji
- Department of Gastroenterology, Affiliated Hospital of Weifang Medical University, Weifang, China
- Experimental Center for Medical Research, Weifang Medical University, Weifang, China
| | - Ning Xu
- School of Clinical Medicine, Weifang Medical University, Weifang, China
| | - Chuanju zong
- School of Clinical Medicine, Weifang Medical University, Weifang, China
| | - Jinhua Gu
- School of Clinical Medicine, Weifang Medical University, Weifang, China
| | - Xiaojing Guo
- School of Clinical Medicine, Weifang Medical University, Weifang, China
| | - Li Zhang
- Department of Gastroenterology, Affiliated Hospital of Weifang Medical University, Weifang, China
- *Correspondence: Li Zhang, Department of Gastroenterology, Affiliated Hospital of Weifang Medical University, Weifang, China. e-mail:
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Parvez S, Fatima G, Mehdi F, Hadi NR, Fedacko J. Relationship Between Vitamin D Receptor Gene BsmI Polymorphism and Fibromyalgia Syndrome. Cureus 2022; 14:e27113. [PMID: 36000140 PMCID: PMC9391660 DOI: 10.7759/cureus.27113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/21/2022] [Indexed: 11/21/2022] Open
Abstract
Purpose Vitamin D receptor (VDR) has been proposed as a possible marker for fibromyalgia syndrome (FMS). The purpose of this study is to characterize the expression pattern of BsmI polymorphism (rs1544410) in the VDR gene in women with FMS and the genotype-phenotype association. Methods A total of 105 FMS patients and 105 controls were included in this study. VDR gene BsmI polymorphism was assessed by polymerase chain reaction (PCR) and restriction fragment length polymerase (RFLP) method. Results There was no significant difference in the frequency distribution of both genotypes and alleles for VDR gene BsmI polymorphism between FMS patients and controls (p>0.05). The frequencies of BB, Bb, and bb in the VDR gene BsmI polymorphism were 19%, 43%, and 37% in patients, while in controls were 22.9%, 55.2%, and 21.9%. However, we did not find any significant association between the clinical symptoms of this disease and VDR BsmI genotypes among FMS patients (p>0.05). Conclusions The relationship between the VDR gene BsmI polymorphism and FMS could not be determined in this study. However, further studies with a larger sample size may be required to show a relation between the VDR gene BsmI polymorphism and FMS.
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Zorrilla Veloz RI, McKenzie T, Palacios BE, Hu J. Nuclear hormone receptors in demyelinating diseases. J Neuroendocrinol 2022; 34:e13171. [PMID: 35734821 PMCID: PMC9339486 DOI: 10.1111/jne.13171] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 04/20/2022] [Accepted: 05/27/2022] [Indexed: 11/28/2022]
Abstract
Demyelination results from the pathological loss of myelin and is a hallmark of many neurodegenerative diseases. Despite the prevalence of demyelinating diseases, there are no disease modifying therapies that prevent the loss of myelin or promote remyelination. This review aims to summarize studies in the field that highlight the importance of nuclear hormone receptors in the promotion and maintenance of myelination and the relevance of nuclear hormone receptors as potential therapeutic targets for demyelinating diseases. These nuclear hormone receptors include the estrogen receptor, progesterone receptor, androgen receptor, vitamin D receptor, thyroid hormone receptor, peroxisome proliferator-activated receptor, liver X receptor, and retinoid X receptor. Pre-clinical studies in well-established animal models of demyelination have shown a prominent role of these nuclear hormone receptors in myelination through their promotion of oligodendrocyte maturation and development. The activation of the nuclear hormone receptors by their ligands also promotes the synthesis of myelin proteins and lipids in mouse models of demyelination. There are limited clinical studies that focus on how the activation of these nuclear hormone receptors could alleviate demyelination in patients with diseases such as multiple sclerosis (MS). However, the completed clinical trials have reported improved clinical outcome in MS patients treated with the ligands of some of these nuclear hormone receptors. Together, the positive results from both clinical and pre-clinical studies point to nuclear hormone receptors as promising therapeutic targets to counter demyelination.
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Affiliation(s)
- Rocío I Zorrilla Veloz
- Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
- Cancer Biology Program, The University of Texas MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, Houston, TX, USA
| | - Takese McKenzie
- Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
- Neuroscience Program, The University of Texas MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, Houston, TX, USA
| | - Bridgitte E Palacios
- Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
- Cancer Biology Program, The University of Texas MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, Houston, TX, USA
- Neuroscience Program, The University of Texas MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, Houston, TX, USA
| | - Jian Hu
- Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
- Cancer Biology Program, The University of Texas MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, Houston, TX, USA
- Neuroscience Program, The University of Texas MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, Houston, TX, USA
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Mohammadi A, Shabestari AN, Baghdadabad LZ, Khatami F, Reis LO, Pishkuhi MA, Kazem Aghamir SM. Genetic Polymorphisms and Kidney Stones Around the Globe: A Systematic Review and Meta-Analysis. Front Genet 2022; 13:913908. [PMID: 35846117 PMCID: PMC9280078 DOI: 10.3389/fgene.2022.913908] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Accepted: 06/06/2022] [Indexed: 11/13/2022] Open
Abstract
Objective: This study explores associations between recurrent kidney stones and genetic polymorphisms. Methods: Meta-analysis of polymorphisms in renal stone cases versus control groups. Four electronic databases (PubMed, SCOPUS, EMBASE, and Web of Science) were searched up to 30 May 2021, using the keywords: “kidney stone” or “kidney calculi,” or “urolithiasis” or “nephrolithiasis” or “urinary calculi” and “genome” or “genetic” or “mutation” or “single nucleotide polymorphism.” Forrest plots, ORs, 95% CI, Chi-square (χ2)-test, and index of heterogeneity (I2) were calculated. Only studies with Newcastle–Ottawa scale (NOS) ≥ 6 were included for quality control, and Funnel, Begg’s, and Eager’s plots assessed publication bias. PROSPERO: CRD42022250427. Results: Among 7,671 searched articles, 72 were included. Polymorphisms in VDR (OR: 1.20; 95% CI: 1.06–1.36), CASR (OR = 1.24; 95% CI: 1.01–1.52), Osteopontin (OR = 1.38; 95% CI: 1.09–1.74), and Urokinase genes (OR = 1.52; 95% CI: 1.02–2.28) showed a significant association with risk of urinary stone formation, while Klotho gene showed a protective effect (OR = 0.75; 95% CI: 0.57–0.99). The VDR gene polymorphism was frequent in Asians, whereas CASR polymorphism was frequent in European and North American populations. Conclusion: Multifactorial nature of the stone formation, emphasizing the role of environmental factors, might explain contradictory results in the literature. While polymorphisms in VDR, CASR, Osteopontin, and Urokinase genes were associated with urinary stone formation, the Klotho gene showed a protective effect.
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Affiliation(s)
- Abdolreza Mohammadi
- Urology Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Alireza Namazi Shabestari
- Department of Geriatric Medicine, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | | | - Fatemeh Khatami
- Urology Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Leonardo Oliveira Reis
- UroScience and Department of Surgery (Urology), School of Medical Sciences, University of Campinas, Unicamp, and Pontifical Catholic University of Campinas, PUC-Campinas, Campinas, São Paulo, Brazil
| | - Mahin Ahmadi Pishkuhi
- Pars Advanced and Minimally Invasive Medical Manners Research Center, Pars Hospital, Iran University of Medical Science, Tehran, Iran
| | - Seyed Mohammad Kazem Aghamir
- Urology Research Center, Tehran University of Medical Sciences, Tehran, Iran
- *Correspondence: Seyed Mohammad Kazem Aghamir,
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Abuelhamd WA, Gomaa NAS, Gad A, El-Wakeel R. Potential role of vitamin D receptor-related polymorphisms in bronchopulmonary dysplasia. EGYPTIAN JOURNAL OF MEDICAL HUMAN GENETICS 2021. [DOI: 10.1186/s43042-021-00148-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
The potential contribution of vitamin D and its receptor (VDR) to bronchopulmonary dysplasia (BPD) in preterm neonates is still unknown. The objective of the study was to test the relationship between VDR Taq 1 and Fok 1 gene polymorphisms and BPD in preterm neonates. VDR Fok 1 and Taq 1 gene polymorphisms were genotyped by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) analysis.
Result
No statistically significant differences of genotypic distributions and allele frequencies of Fok 1 and Taq 1 VDR polymorphisms were detected between cases and controls. Moreover, no risk association was detected between both polymorphisms and BPD development in preterm neonates. Homozygous mutant (ff) genotype was the least frequent genotype among BPD and non-BPD groups (2.6%, 13.0% respectively) (p = 0.1). The same was detected for the mutant (CC) genotype frequency in both groups (10.5% and 15.2%, respectively). However, Taq 1 VDR polymorphism was significantly associated with the severity of BPD, as the genotypes with mutant allele C (CC +CT) were more frequent among severe cases (52.2%).
Conclusion
Fok 1and Taq 1 VDR polymorphisms have no role in BPD development in preterm neonates. However, the presence of a mutant allele of Taq 1 VDR polymorphism may be associated with a more severe form of the disease.
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Fahmy EM, Elawady ME, Sharaf S, Heneidy S, Ismail RS. Vitamin D receptor gene polymorphisms and idiopathic Parkinson disease: an Egyptian study. THE EGYPTIAN JOURNAL OF NEUROLOGY, PSYCHIATRY AND NEUROSURGERY 2021. [DOI: 10.1186/s41983-021-00358-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Accumulating data have suggested that vitamin D receptor (VDR) gene is a pretender gene for vulnerability to Parkinson disease (PD). This study aimed to assess the relationship of VDR gene polymorphisms (FokI and ApaI) with PD. Fifty patients suffering from PD and 50 age- and sex-matched healthy controls were included. Unified Parkinson Disease Rating Scale (UPDRS) was done to assess disease severity. Genetic testing for VDR gene single nucleotide polymorphisms (FokI and ApaI) was done using real time polymerase chain reaction (PCR) technique.
Results
Concerning frequency of genes and alleles for vitamin D receptor gene polymorphisms (FokI and ApaI), no statistically significant difference was found between PD patients and controls. AC genotype was associated with younger age and younger age at onset of disease compared to CC and AA genotypes of ApaI gene polymorphisms. CC genotype was significantly positively correlated with fatigue and urine incontinence. VDR gene polymorphisms were not found to be independent predictors for severity of PD after adjustment for possible confounders.
Conclusion
VDR gene polymorphisms are related to the clinical manifestations rather than etiology or severity of idiopathic PD.
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Chaudhary H, Patel J, Jain NK, Joshi R. The role of polymorphism in various potential genes on polycystic ovary syndrome susceptibility and pathogenesis. J Ovarian Res 2021; 14:125. [PMID: 34563259 PMCID: PMC8466925 DOI: 10.1186/s13048-021-00879-w] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Accepted: 09/09/2021] [Indexed: 12/27/2022] Open
Abstract
Polycystic ovary syndrome (PCOS) is the most common endocrinopathies affecting the early reproductive age in women, whose pathophysiology perplexes many researchers till today. This syndrome is classically categorized by hyperandrogenism and/or hyperandrogenemia, menstrual and ovulatory dysfunction, bulky multi follicular ovaries on Ultrasonography (USG), and metabolic abnormalities such as hyperinsulinemia, dyslipidemia, obesity. The etiopathogenesis of PCOS is not fully elucidated, but it seems that the hypothalamus-pituitary-ovarian axis, ovarian, and/or adrenal androgen secretion may contribute to developing the syndrome. Infertility and poor reproductive health in women's lives are highly associated with elevated levels of androgens. Studies with ovarian theca cells taken from PCOS women have demonstrated increased androgen production due to augmented ovarian steroidogenesis attributed to mainly altered expression of critical enzymes (Cytochrome P450 enzymes: CYP17, CYP21, CYP19, CYP11A) in the steroid hormone biosynthesis pathway. Despite the heterogeneity of PCOS, candidate gene studies are the widely used technique to delineate the genetic variants and analyze for the correlation of androgen biosynthesis pathway and those affecting the secretion or action of insulin with PCOS etiology. Linkage and association studies have predicted the relationship between genetic variants and PCOS risk among families or populations. Several genes have been proposed as playing a role in the etiopathogenesis of PCOS, and the presence of mutations and/or polymorphisms has been discovered, which suggests that PCOS has a vital heritable component. The following review summarizes the influence of polymorphisms in crucial genes of the steroidogenesis pathway leading to intraovarian hyperandrogenism which can result in PCOS.
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Affiliation(s)
- Hiral Chaudhary
- Department of Biochemistry and Forensic Science, University School of Sciences, Gujarat University, Ahmedabad, Gujarat 380009 India
| | - Jalpa Patel
- Department of Biochemistry and Forensic Science, University School of Sciences, Gujarat University, Ahmedabad, Gujarat 380009 India
| | - Nayan K. Jain
- Department of Life Science, University School of Sciences, Gujarat University, Ahmedabad, Gujarat 380009 India
| | - Rushikesh Joshi
- Department of Biochemistry and Forensic Science, University School of Sciences, Gujarat University, Ahmedabad, Gujarat 380009 India
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Yadav U, Kumar P, Rai V. FokI polymorphism of the vitamin D receptor (VDR) gene and susceptibility to tuberculosis: Evidence through a meta-analysis. INFECTION GENETICS AND EVOLUTION 2021; 92:104871. [PMID: 33901685 DOI: 10.1016/j.meegid.2021.104871] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 04/15/2021] [Accepted: 04/20/2021] [Indexed: 12/14/2022]
Abstract
BACKGROUND Tuberculosis is one of the top ten causes of deaths worldwide. The deficiency of vitamin D was reported to be associated with the increased susceptibility of tuberculosis. Various previous reports were published to check the association of FokI polymorphism of the vitamin D receptor gene with tuberculosis risk. But their results were inconsistent so, we performed a meta-analysis to know the exact relation of the two. METHODS Different databases were screened up to November 2020 with the keywords "Vitamin D receptor", "VDR", and "FokI", along with "Tuberculosis" and "TB" to find the suitable articles. All the statistical analyses were performed by the Open Meta-Analyst program and all p-values were two-tailed with a significance level of 0.05. RESULTS No statistically significant association was observed in the allele contrast model (ORfvs.F = 1.11, 95%CI = 0.99-1.24, p = 0.05, I2 = 73.46%), in the dominant model (ORff+Ffvs.FF = 1.11, 95%CI = 0.96-1.28, p = 0.14, I2 = 71.39%), and in the co-dominant model (ORFfvs.FF = 1.05, 95%CI = 0.92-1.21, p = 0.41, I2 = 65.97%). However, a significant association was found in the homozygote model (ORffvs.FF = 1.32, 95%CI = 1.03-1.69, p = 0.02, I2 = 67.02%) and in the recessive model (ORFF+Ff vs.ff = 1.26, 95%CI = 1.03-1.54, p = 0.02, I2 = 58.01%). Further analysis was performed on the bases of the ethnicity. In Asian population a significant association was found in the homozygote model (ORffvs.FF = 1.57, 95%CI = 1.12-2.21, p = 0.008, I2 = 70.37%) and in the recessive model (ORFF+Ff vs.ff = 1.43, 95%CI = 1.08-1.89, p = 0.01, I2 = 63.13%). CONCLUSION In conclusion, a significant association of FokI with tuberculosis susceptibility was found in the overall analysis and in the Asian population.
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Affiliation(s)
- Upendra Yadav
- Human Molecular Genetics Laboratory, Department of Biotechnology, VBS Purvanchal University, Jaunpur, UP, India
| | - Pradeep Kumar
- Human Molecular Genetics Laboratory, Department of Biotechnology, VBS Purvanchal University, Jaunpur, UP, India
| | - Vandana Rai
- Human Molecular Genetics Laboratory, Department of Biotechnology, VBS Purvanchal University, Jaunpur, UP, India.
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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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Kosik K, Szpecht D, Al-Saad SR, Karbowski LM, Kurzawińska G, Szymankiewicz M, Drews K, Wolski H, Seremak-Mrozikiewicz A. Single nucleotide vitamin D receptor polymorphisms (FokI, BsmI, ApaI, and TaqI) in the pathogenesis of prematurity complications. Sci Rep 2020; 10:21098. [PMID: 33273558 PMCID: PMC7713052 DOI: 10.1038/s41598-020-78125-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Accepted: 11/17/2020] [Indexed: 11/10/2022] Open
Abstract
The vitamin D receptor (VDR), coded by the VDR gene, plays a pivotal role in executing cellular functions when bound by the active form of vitamin D. Gene polymorphisms in this receptor have been increasingly associated with a heightened state of vulnerability to certain diseases. However, limited data is available concerning the role of VDR gene polymorphisms in preterm infant complications. In 114 premature infants (< 32 weeks gestation) we analyze four single nucleotide VDR polymorphisms (rs2228570 (FokI), rs1544410 (BsmI), rs797532 (ApaI), rs731236 (TaqI)) for their association with respiratory distress syndrome (RDS), intraventricular hemorrhage (IVH), bronchopulmonary dysplasia (BPD), necrotizing enterocolitis (NEC) and retinopathy of prematurity (ROP). The results show that BPD was almost four times more likely in infants with the genotype CC of ApaI (rs7975232) (OR 3.845; p = 0.038). While both BPD and NEC were 2.1 times more likely to occur in preterm infants with the allele C of ApaI (rs7975232) (respectively: OR 2.111 and OR 2.129, p < 0.05). The ApaI VDR polymorphism appears to influence incidence of BPD and NEC in preterm infants. Considering VDR polymorphisms in future genetic investigations, in preterm complications, may prove clinically relevant.
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Vahidinia Z, Karimian M, Joghataei MT. Neurosteroids and their receptors in ischemic stroke: From molecular mechanisms to therapeutic opportunities. Pharmacol Res 2020; 160:105163. [DOI: 10.1016/j.phrs.2020.105163] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 08/17/2020] [Accepted: 08/17/2020] [Indexed: 01/09/2023]
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Soto JR, Anthias C, Madrigal A, Snowden JA. Insights Into the Role of Vitamin D as a Biomarker in Stem Cell Transplantation. Front Immunol 2020; 11:966. [PMID: 32582151 PMCID: PMC7295104 DOI: 10.3389/fimmu.2020.00966] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Accepted: 04/24/2020] [Indexed: 12/19/2022] Open
Abstract
Vitamin D was discovered 100 years ago and since then multiple studies have consistently proved its effect on bone health and mineral metabolism. Further research has also explored its so-called "non-classical" biological effects, encompassing immune regulation and control of cell proliferation and differentiation. Vitamin D downregulates pro-inflammatory immune cells and subsequently their cytokine production, while enhancing the anti-inflammatory subsets, thus mediating inflammation and fostering a more tolerogenic environment. Its biological action is exerted through the vitamin D receptor, a nuclear receptor that mediates gene transcription and is expressed in most cells from the innate and adaptive immunity. Owing to its immune-modulatory properties, its role in cancer pathophysiology, hematology disorders and stem cell transplantation has also been investigated. Vitamin D deficiency causes immune imbalance and cytokine dysregulation, contributing to some autoimmune diseases. In the hematopoietic stem cell transplant setting this could lead to complications such as acute and chronic graft-versus-host disease, ultimately impacting transplant outcomes. Other factors have also been linked to this, including specific polymorphisms of the vitamin D receptor in both stem cell donors and recipients. Nevertheless, studies thus far have shown conflicting results and the use of vitamin D or its receptor as biomarkers has not been validated yet, therefore there are no evidence-based consensus guidelines to guide clinicians in their day-to-day practice. To gain more insight in this topic, we have reviewed the existent literature and gathered the current evidence. This is an overview of the role of serum vitamin D and its receptor as biomarkers for clinical outcomes in patients undergoing hematopoietic stem cell transplantation. Further prospective studies with larger cohorts are warranted to validate the viability of using serum vitamin D, and its receptor, as biomarkers in potential stem cell donors and patients, to identify those at risk of post-transplant complications and enable early therapeutic interventions.
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Affiliation(s)
- Jose Ros Soto
- Anthony Nolan Research Institute, Royal Free Hospital and University College London, London, United Kingdom
| | - Chloe Anthias
- Anthony Nolan Research Institute, Royal Free Hospital and University College London, London, United Kingdom
- Department of Haemato-Oncology, The Royal Marsden Hospital, Sutton, United Kingdom
| | - Alejandro Madrigal
- Anthony Nolan Research Institute, Royal Free Hospital and University College London, London, United Kingdom
| | - John A. Snowden
- Department of Haematology, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, United Kingdom
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Mohammadi A, Azarnezhad A, Khanbabaei H, Izadpanah E, Abdollahzadeh R, Barreto GE, Sahebkar A. Vitamin D receptor genetic polymorphisms and the risk of multiple sclerosis: A systematic review and meta-analysis. Steroids 2020; 158:108615. [PMID: 32097613 DOI: 10.1016/j.steroids.2020.108615] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Revised: 02/15/2020] [Accepted: 02/19/2020] [Indexed: 01/14/2023]
Abstract
There are conflicting results regarding the exact effect of the vitamin D receptor (VDR) gene polymorphisms on the susceptibility to multiple sclerosis (MS). Therefore, we aimed to investigate the impact of four major studied VDR gene polymorphisms consisting of ApaI, BsmI, FokI, and TaqI on the risk of MS in the Iranian population. A literature search was performed in various databases to find case-control studies evaluating the association between VDR gene polymorphisms and MS risk in Iran. Data were extracted and odds ratios (OR) with 95% confidence intervals (CI) were calculated. Subgroup analyze was performed to detect potential sources of heterogeneity. A total of 1206 cases and 1402 controls in nine case-control studies were included. ApaI was the only variant which showed statistically significant relation in allelic (OR = 0.54 (95% CI: 0.37-0.79); P = 0.00), homozygote (OR = 3.48 (95% CI: 1.7-6.9); P = 0.00), dominant (OR = 0.56 (95% CI: 0.3-0.79); P = 0.01), and recessive (OR = 0.35 (95% CI: 0.18-0.66); P = 0.00) models. The TaqI polymorphism showed a significant negative association with MS only in the homozygote model (OR = 0.28 (95% CI: 0.08-0.9); P = 0.04). The BsmI polymorphism also showed significant relation in allelic (OR = 0.69 (95% CI: 0.51-0.94); P = 0.01), homozygote (OR = 0.46 (95% CI: 0.25-0.86); P = 0.01), and recessive OR = 0.56 (95% CI: 0.39-0.8); P = 0.00) models after performing sensitivity analysis. FokI polymorphism showed no significant association with MS risk. ApaI and TaqI TT genotype were found contributing to MS susceptibility and BsmI and FokI showed no relation with MS susceptibility in the Iranian population.
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Affiliation(s)
- Asadollah Mohammadi
- Cellular and Molecular Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Asaad Azarnezhad
- Cellular and Molecular Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Hashem Khanbabaei
- Medical Physics Department, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Esmael Izadpanah
- Cellular and Molecular Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran; Department of Physiology and Pharmacology, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Rasoul Abdollahzadeh
- Department of Medical Genetics, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - George E Barreto
- Department of Biological Sciences, University of Limerick, Limerick, Ireland; Instituto de Ciencias Biomédicas, Universidad Autónoma de Chile, Santiago, Chile
| | - Amirhossein Sahebkar
- Halal Research Center of IRI, FDA, Tehran, Iran; Neurogenic Inflammation Research Center, Mashhad University of Medical Sciences, Mashhad, Iran; Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran.
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Yang H, Wu X. The Correlation Between Vitamin D Receptor (VDR) Gene Polymorphisms and Autism: A Meta-analysis. J Mol Neurosci 2020; 70:260-268. [PMID: 31900887 DOI: 10.1007/s12031-019-01464-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Accepted: 12/05/2019] [Indexed: 12/15/2022]
Abstract
Vitamin D receptor (VDR) polymorphisms are risk factors for autism. We performed a systematic meta-analysis to explore the relationship between VDR gene polymorphisms and autism. A literature review of articles from Pubmed, Embase, the Cochrane Library, and Springer was conducted up to January 28, 2019. The association between SNPs and autism was calculated using pooled odd ratios (ORs) and 95% confidence intervals (CIs). Additionally, tests for heterogeneity, publication bias, and sensitivity were conducted. Six eligible studies with a total of 2001 participants (1045 cases and 956 controls) were included. Meta-analysis indicated that the "C" allele of the rs731236 gene, including C vs. T (OR = 1.3254, 95% CI = 1.0897-1.6122), CC vs. TT (OR = 2.0871, 95% CI = 1.3395-3.2519), and CC vs. TT + CT (OR = 1.9610, 95% CI = 1.2985-2.9615), might be a risk factor for autism. Moreover, the "G" allele of rs7975232 (G vs. T: OR = 0.8228, 95% CI = 0.6814-0.9934) was associated with a protective effect against the development of autism. No significant differences were found in the allele frequencies of rs11568820, rs1544410, and rs2228570 in the cases and controls. This meta-analysis revealed that both VDR rs731236 and rs7975232 were significantly associated with autism, whereas VDR rs11568820, rs1544410, and rs2228570 might not be correlated with the incidence of autism.
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Affiliation(s)
- Hongchang Yang
- School of Physical Education and Training, Shanghai University of Sport, Shanghai, 200438, China.,Department of Physical Education, Hohai University, Nanjing, 210098, China
| | - Xueping Wu
- School of Physical Education and Training, Shanghai University of Sport, Shanghai, 200438, China. .,Shanghai Key Lab of Human Performance, Shanghai University of Sport, No. 399 Changhai Road, Yangpu District, Shanghai, 200438, China.
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17
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Mohammadi A, Khanbabaei H, Nasiri-Kalmarzi R, Khademi F, Jafari M, Tajik N. Vitamin D receptor ApaI (rs7975232), BsmI (rs1544410), Fok1 (rs2228570), and TaqI (rs731236) gene polymorphisms and susceptibility to pulmonary tuberculosis in an Iranian population: A systematic review and meta-analysis. JOURNAL OF MICROBIOLOGY, IMMUNOLOGY, AND INFECTION = WEI MIAN YU GAN RAN ZA ZHI 2019; 53:827-835. [PMID: 31740220 DOI: 10.1016/j.jmii.2019.08.011] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 07/03/2019] [Accepted: 08/20/2019] [Indexed: 01/23/2023]
Abstract
Polymorphisms of vitamin D receptors (VDRs), ApaI, BsmI, FokI, and TaqI might affect susceptibility to tuberculosis (TB). In this systematic review and meta-analysis, all published articles which investigated the effects of these polymorphisms on the risk of TB in the Iranian population were retrieved. PubMed and Scopus were searched with no date or language restrictions. In this meta-analysis, the Comprehensive Meta-Analysis (CMA) version 2.0 and random effects model were applied. The association of polymorphisms with TB risk was assessed by measuring the odds ratio (ORs) at 95% CI. Heterogeneity was investigated based on Cochran Q-test and I2-index statistics. The significance level was set at 0.05. Also, Egger's regression intercept was determined to measure publication bias. A total of six articles on Iranian populations were included. TaqI (5/6 included studies) showed a significant association with the increased risk of TB based on ORs (allele comparison: 1.57 (1.0, 2.3), p-value: 0.02; additive model of tt/TT: 1.57 (0.9, 2.5), p-value: 0.05; recessive model (tt/Tt + TT): 1.99 (1.2, 3.2), p-value: 0.00; dominant model (tt + Tt/TT): 1.98 (1.1, 3.5), p-value: 0.01). BsmI showed a significant positive effect on TB risk only in its dominant genotype (bb + bB/BB) (1.44 (1.0, 1.9); p-value: 0.02). FokI and ApaI did not show any significant effects on TB development in Iranian populations. Findings showed the significant effect of TaqI polymorphism in all genetic models and the dominant model of BsmI on the increased risk of TB. However, the effects of TaqI and BsmI should be further investigated in a larger sample size.
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Affiliation(s)
- Asadollah Mohammadi
- Cellular and Molecular Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran.
| | - Hashem Khanbabaei
- Medical Physics Department, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
| | - Rasoul Nasiri-Kalmarzi
- Cellular and Molecular Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran; Lung Diseases and Allergy Research Center, Kurdistan University of Medical Sciences, Sanandaj, Iran.
| | - Farzad Khademi
- Department of Microbiology, School of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran.
| | - Mohammad Jafari
- Cellular and Molecular Research Center, Gerash University of Medical Sciences, Gerash, Iran; Department of Immunology, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran.
| | - Nader Tajik
- Department of Immunology, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran; Immunology Research Center (IRC), Iran University of Medical Sciences, Tehran, Iran.
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18
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Genotyping of vitamin D receptor FOKI polymorphism as a predictor for type 2 diabetes mellitus by a tetra primer-ARMS-PCR assay. GENE REPORTS 2019. [DOI: 10.1016/j.genrep.2019.01.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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19
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Mokhtar WA, Fawzy A, Allam RM, Amer RM, Hamed MS. Maternal vitamin D level and vitamin D receptor gene polymorphism as a risk factor for congenital heart diseases in offspring; An Egyptian case-control study. Genes Dis 2019; 6:193-200. [PMID: 31194013 PMCID: PMC6545446 DOI: 10.1016/j.gendis.2018.08.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2018] [Accepted: 08/15/2018] [Indexed: 01/12/2023] Open
Abstract
Vitamin D & vitamin D receptor (VDR) signaling play a very crucial role in early embryonic heart development. We construct this case-control study to investigate the association between maternal serum vitamin D level & VDR gene Fok1 polymorphism and risk of congenital heart defects (CHD) in offspring. Fifty mothers who had term neonates with CHD were considered as cases. Fifty age-comparable healthy mothers who had neonates without CHD were contemplated as controls. Maternal serum 25 hydroxyvitamin D [25(OH) D] level was tested using ELISA. Maternal VDR gene Fok1 polymorphism was analyzed using PCR-based RFLP-assay. There was a significant decrease in maternal vitamin D level (P = 0.002) and a significant increase in vitamin D deficient status (P = 0.007) among cases when compared to controls. VDR gene Fok1 genotypes distribution frequency were in accordance with Hardy Weinberg equilibrium (HW) among controls. A significant increase in VDR gene Fok1 F/f & f/f genotypes and f allele were observed in cases compared to controls with estimated odds ratio (95% confidence interval) & P-value of 3 (1-8) & P = 0.006, 11 (1-97) & P = 0.01 and 3 (2-6) & P = 0.001 respectively. There was a significant decrease in maternal vitamin D level in neonates with cyanotic CHD (P = 0.000) compared to those with a cyanotic CHD while there was no significant difference in VDR Fok1 genotype (P = 0.18) & allele (P = 0.05) distribution between two groups. We concluded that maternal vitamin D deficiency and VDR gene Fok1 F/f, f/f genotype and f allele were associated with increased risk of CHD in offspring.
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Affiliation(s)
- Wesam A Mokhtar
- Pediatric Department, Faculty of Medicine, Zagazig University, Egypt
| | - Amal Fawzy
- Medical Biochemistry Department, Faculty of Medicine, Zagazig University, Egypt
| | - Reem M Allam
- Clinical Pathology Department, Faculty of Medicine, Zagazig University, Egypt
| | - Rania M Amer
- Medical Microbiology and Immunology Department, Faculty of Medicine, Zagazig University, Egypt
| | - Mona S Hamed
- Public Health and Community Medicine, Faculty of Medicine, Zagazig University, Egypt
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Goyal H, Perisetti A, Rahman MR, Levin A, Lippi G. Vitamin D and Gastrointestinal Cancers: A Narrative Review. Dig Dis Sci 2019; 64:1098-1109. [PMID: 30511197 DOI: 10.1007/s10620-018-5400-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Accepted: 11/27/2018] [Indexed: 12/14/2022]
Abstract
Calcitriol (1,25(OH)2D3) performs various activities throughout the body. Although low serum 25-hydroxyvitamin D [25(OH)D] levels are associated with several disease processes such as risk of fractures and falls, hypertension, cardiovascular disease, and diabetes mellitus, recent evidence attests that this important hormone also regulates several cellular pathways involved in cancer development and progression. Calcitriol modulates several genes controlling gut physiology and calcium homeostasis and also maintains the integrity of epithelial barriers, regulates the absorption of phosphate and calcium, and modulates host defense against pathogens and inflammatory response by interplaying with several types of secretory and immune cells. Vitamin D deficiency is significantly related to increased risk of developing certain types of cancer. This deficiency can be prevented by vitamin D supplementation which is both economical and safe. This can lower the risk of developing cancer and also improve the prognosis of patients with gastrointestinal malignancy, but epidemiological data remain inconsistent. Several retrospective observational studies have demonstrated the benefits of vitamin D supplementation, but a few randomized controlled trials have not seemingly supported the beneficial role of vitamin D supplementation in gastrointestinal cancers. Therefore, in this literature review, we aimed to examine the possible role of vitamin D in gastrointestinal malignancies, including gastric, esophageal, pancreatic, hepatic, and colorectal cancers.
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Affiliation(s)
- Hemant Goyal
- Mercer University School of Medicine, 707 Pine St, Macon, GA, 31201, USA.
| | - Abhilash Perisetti
- University of Arkansas for Medical Sciences, 4301 W Markham St, Little Rock, AR, 72205, USA
| | - M Rubayat Rahman
- University of Arkansas for Medical Sciences, 4301 W Markham St, Little Rock, AR, 72205, USA
| | - Avi Levin
- Carver College of Medicine, University of Iowa, 200 Hawkins Drive, Iowa City, IA, 52242, USA
| | - Giuseppe Lippi
- Section of Clinical Biochemistry, University of Verona, Verona, Italy
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21
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Ahmad I, Jafar T, Mahdi F, Arshad M, Das SK, Waliullah S, Mahdi AA. Association of Vitamin D Receptor (FokI and BsmI) Gene Polymorphism with Bone Mineral Density and Their Effect on 25-Hydroxyvitamin D Level in North Indian Postmenopausal Women with Osteoporosis. Indian J Clin Biochem 2018; 33:429-437. [PMID: 30319189 PMCID: PMC6170232 DOI: 10.1007/s12291-017-0706-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Accepted: 10/16/2017] [Indexed: 10/18/2022]
Abstract
Osteoporosis is a systemic disease with a strong genetic component. Vitamin D receptor (VDR) has been suggested as a candidate gene for osteoporosis. Therefore the present study was aimed to investigate the pattern of allelic variants of VDR gene polymorphism (FokI and BsmI), its influence on vitamin D levels and bone mineral density (BMD) in North Indian postmenopausal women with osteoporosis for possible genetic association. 254 postmenopausal osteoporotic women and 254 postmenopausal non osteoporotic women were included in the study. VDR FokI and BsmI gene polymorphism gene were assessed by the PCR-RFLP method. Serum 25-hydroxyvitamin D was measured by the ELISA. BMD at the L1-L4 lumbar spine, hip, forearm and femoral neck was assessed by dual energy X-ray absorptiometry. The average BMD at spine and hip in postmenopausal women with bb and spine, hip, femoral neck and forearm with ff genotype had significantly low BMD. The frequency of ff genotype and f allele was significantly higher in postmenopausal osteoporotic women when compared with postmenopausal non osteoporotic women. However, no significant association was found between the genotypes and vitamin D levels. Our study reveals that VDR gene FokI and BsmI polymorphism is significantly associated with low bone mineral density. Therefore the ff genotype and f allele of VDR FokI gene may be used as an important risk factor for osteoporosis.
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Affiliation(s)
- Israr Ahmad
- Department of Biochemistry, King George’s Medical University, Lucknow, 226003 India
- Department of Biochemistry, Era’s Lucknow Medical College and Hospital, Lucknow, 226003 India
| | - Tabrez Jafar
- Department of Zoology, Lucknow University, Lucknow, 226007 India
| | - Farzana Mahdi
- Department of Biochemistry, Era’s Lucknow Medical College and Hospital, Lucknow, 226003 India
| | - Md. Arshad
- Department of Zoology, Lucknow University, Lucknow, 226007 India
| | - Siddharth Kumar Das
- Department of Rheumatology, King George’s Medical University, Lucknow, 226003 India
| | - Shah Waliullah
- Department of Orthopedic Surgery, King George’s Medical University, Lucknow, 226003 India
| | - Abbas Ali Mahdi
- Department of Biochemistry, King George’s Medical University, Lucknow, 226003 India
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Shan L, Kang X, Liu F, Cai X, Han X, Shang Y. Expression of vitamin D receptor in bronchial asthma and its bioinformatics prediction. Mol Med Rep 2018; 18:2052-2060. [PMID: 29901144 PMCID: PMC6072178 DOI: 10.3892/mmr.2018.9157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2017] [Accepted: 12/14/2017] [Indexed: 11/06/2022] Open
Abstract
Vitamin D receptors (VDRs) are associated with the occurrence and development of asthma. The aim of the present study was to analyze the secondary structure and B‑cell and T‑cell epitopes of VDR using online prediction software and aid in the future development of a highly efficient epitope‑based vaccine against asthma. Blood samples were collected from peripheral blood of asthmatic children. Reverse transcription quantitative‑polymerase chain reaction (RT‑qPCR) was performed to detect the expression of VDR in the peripheral blood. Mouse models of asthma were established. Hematoxylin and eosin staining was performed to observe the pathological alterations of the lungs of mice. Immunohistochemistry, western blot analysis and RT‑qPCR were performed to detect the expression of VDR in the lungs of asthmatic mice. Online prediction software immune epitope database and analysis resource, SYFPEITHI and linear epitope prediction based on propensity scale and support vector machines were used to predict the B‑cell and T‑cell epitopes and the RasMol and 3DLigandSite were used to analyze the tertiary structure of VDR. RT‑qPCR demonstrated that VDR expression in the peripheral blood of asthmatic children was decreased. Immunohistochemistry, western blotting and RT‑qPCR demonstrated that VDR expression also decreased in the lungs of mouse models of asthma. VDR B‑cell epitopes were identified at 37‑45, 88‑94, 123‑131, 231‑239, 286‑294 and 342‑350 positions of the amino acid sequence and VDR T‑cell epitopes were identified at 125‑130, 231‑239 and 265‑272 positions. A total of six B‑cell epitopes and three T‑cell epitopes for VDR were predicted by bioinformatics, which when validated, may in the future aid in immunological diagnosis and development of a targeted drug therapy for clinical asthma.
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Affiliation(s)
- Lishen Shan
- Department of Pediatric Pulmonology, Shengjing Hospital Affiliated to China Medical University, Shenyang, Liaoning 110004, P.R. China
| | - Xinyuan Kang
- Department of Orthopedics, Shengjing Hospital Affiliated to China Medical University, Shenyang, Liaoning 110122, P.R. China
| | - Fen Liu
- Department of Pediatric Pulmonology, Shengjing Hospital Affiliated to China Medical University, Shenyang, Liaoning 110004, P.R. China
| | - Xuxu Cai
- Department of Pediatric Pulmonology, Shengjing Hospital Affiliated to China Medical University, Shenyang, Liaoning 110004, P.R. China
| | - Xiaohua Han
- Department of Pediatric Pulmonology, Shengjing Hospital Affiliated to China Medical University, Shenyang, Liaoning 110004, P.R. China
| | - Yunxiao Shang
- Department of Pediatric Pulmonology, Shengjing Hospital Affiliated to China Medical University, Shenyang, Liaoning 110004, P.R. China
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Ahmad I, Jafar T, Mahdi F, Ameta K, Arshad M, Das SK, Waliullah S, Rizvi I, Mahdi AA. Association of vitamin D receptor gene polymorphism (TaqI and Apa1) with bone mineral density in North Indian postmenopausal women. Gene 2018; 659:123-127. [PMID: 29559350 DOI: 10.1016/j.gene.2018.03.052] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Revised: 01/23/2018] [Accepted: 03/16/2018] [Indexed: 10/17/2022]
Abstract
Vitamin D receptor (VDR) gene has an important role as a candidate gene for the regulation of bone mass in osteoporosis. However, its association with bone mineral density (BMD) is controversial and has not been established in different ethnic populations. To enhance the understanding of VDR gene polymorphism in the context of BMD, we investigated the plausible genetic association of TaqI and ApaI polymorphism with BMD in North Indian postmenopausal women with osteoporosis.254 osteoporotic women (Age 55.82 ± 6.91) and 254 postmenopausal non osteoporotic women (Age 54.76 ± 6.26) were included in the study. VDR TaqI and ApaI polymorphism were determined by PCR (polymerase chain reaction) and RFLP (restriction fragment length polymorphism). BMD was assessed by dual energy X-ray absorptiometry (DXA) at the lumbar spine (L1-L4), hip, forearm and femoral neck. The average BMD with TT genotype was significantly lower at lumbar spine, hip and forearm. The Frequency of TT genotype and t allele was significantly high in osteoporotic women when compared with controls. The average BMD with Aa genotype was higher in ApaI. Furthermore, comparison of frequency distribution of genotype and allele for VDR ApaI between osteoporotic patients and controls did not show any significant difference. Our findings revealed that TaqI gene TT genotype was associated with low BMD in North Indian osteoporotic women. Moreover, TT genotype and t allele associated significantly with osteoporosis in postmenopausal women. Therefore, VDR TaqI gene is an important determinant of risk factor for osteoporosis.
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Affiliation(s)
- Israr Ahmad
- Department of Biochemistry, King George's Medical University, Lucknow 226003, India; Department of Biochemistry, Era's Lucknow Medical College & Hospital, Lucknow 226003, India
| | - Tabrez Jafar
- Department of Zoology, Lucknow University, Lucknow 226007, India
| | - Farzana Mahdi
- Department of Biochemistry, Era's Lucknow Medical College & Hospital, Lucknow 226003, India
| | - Keerti Ameta
- Department of Biochemistry, King George's Medical University, Lucknow 226003, India
| | - Md Arshad
- Department of Zoology, Lucknow University, Lucknow 226007, India
| | - Siddharth Kumar Das
- Department of Rheumatology, King George's Medical University, Lucknow 226003, India
| | - Shah Waliullah
- Department of Orthopedic Surgery, King George's Medical University, Lucknow 226003, India
| | - Imran Rizvi
- Department of Neurology, King George's Medical University, Lucknow 226003, India
| | - Abbas Ali Mahdi
- Department of Biochemistry, King George's Medical University, Lucknow 226003, India.
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Zenata O, Vrzal R. Fine tuning of vitamin D receptor (VDR) activity by post-transcriptional and post-translational modifications. Oncotarget 2018; 8:35390-35402. [PMID: 28427151 PMCID: PMC5471063 DOI: 10.18632/oncotarget.15697] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2016] [Accepted: 02/08/2017] [Indexed: 12/31/2022] Open
Abstract
Vitamin D receptor (VDR) is a member of the nuclear receptor (NR) superfamily of ligand-activated transcription factors. Activated VDR is responsible for maintaining calcium and phosphate homeostasis, and is required for proper cellular growth, cell differentiation and apoptosis. The expression of both phases I and II drug-metabolizing enzymes is also regulated by VDR, therefore it is clinically important. Post-translational modifications of NRs have been known as an important mechanism modulating the activity of NRs and their ability to drive the expression of target genes. The aim of this mini review is to summarize the current knowledge about post-transcriptional and post-translational modifications of VDR.
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Affiliation(s)
- Ondrej Zenata
- Department of Cell Biology and Genetics, Faculty of Science, Palacky University, Olomouc, Czech Republic
| | - Radim Vrzal
- Department of Cell Biology and Genetics, Faculty of Science, Palacky University, Olomouc, Czech Republic
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Güleç Yılmaz S, Gül T, Attar R, Yıldırım G, İşbir T. Association between fok1 polymorphism of vitamin D receptor gene with uterine leiomyoma in Turkish populations. J Turk Ger Gynecol Assoc 2018; 19:128-131. [PMID: 29391329 PMCID: PMC6085526 DOI: 10.4274/jtgga.2018.0002] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Objective: The aim of this research was to determine the association between the fok1 polymorphism and uterine leiomyomas. Material and Methods: For genotyping the fok1 polymorphism of the vitamin D receptor, real-time polymerase chain reaction was performed on blood samples of uterine leiomyoma (n=27) and control (n=33) groups. For statistical analyses, SPSS v.23 software (SPSS Inc., Chicago, IL, USA) was used. Results: A statistically significant difference was observed for the frequency of the CC genotype between the uterine leiomyoma and control groups, and the frequencies of the T allele in the uterine leiomyoma groups were significantly higher than in the control group. Conclusion: The presence of the fok1 CC genotype may be a risk-reducing factor and the T allele may be a potential risk factor for developing uterine leiomyoma.
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Affiliation(s)
- Seda Güleç Yılmaz
- Department of Molecular Medicine, Yeditepe University, Institute of Health Sciences, İstanbul, Turkey
| | - Tuğçe Gül
- Department of Molecular Medicine, Yeditepe University, Institute of Health Sciences, İstanbul, Turkey
| | - Rukset Attar
- Departments of Obstetrics and Gynecology, Yeditepe University School of Medicine, İstanbul, Turkey
| | - Gazi Yıldırım
- Department of Molecular Medicine, Yeditepe University, Institute of Health Sciences, İstanbul, Turkey
| | - Turgay İşbir
- Department of Medical Biology, Yeditepe University School of Medicine, İstanbul, Turkey
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Godar DE, Merrill SJ. Untangling the most probable role for vitamin D 3 in autism. DERMATO-ENDOCRINOLOGY 2017; 9:e1387702. [PMID: 29484101 PMCID: PMC5821151 DOI: 10.1080/19381980.2017.1387702] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Revised: 09/02/2017] [Accepted: 09/29/2017] [Indexed: 12/31/2022]
Abstract
Recent studies indicate an important role for vitamin D3 in autism spectrum disorder (ASD), although its mechanism is not completely understood. The most puzzling aspect of ASD is that identical twins, who share identical DNA, do not have 100% concordance rates (∼88% for identical and ∼31% for fraternal twins). These findings provide major clues into the etiology: ASD must involve an environmental factor present in the prenatal milieu that both identical twins are not always exposed to because they do not always share it (i.e., placentas). Combined with the exponential increasing rates of ASD around the world, these observations suggest a contagious disease is probably transferred to the fetus via the placenta becoming infected by a cervical virus. Vitamin D3 boosts immune responses clearing viral infections and increases serotonin and estrogen brain levels. Here we review the different roles and untangle the most probable one vitamin D3 plays in ASD.
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Affiliation(s)
- Dianne E. Godar
- Body of Knowledge, Inc., Division of Human Disease Research Worldwide, Racine, WI, USA
| | - Stephen J. Merrill
- Marquette University, Department of Mathematics, Statistics, and Computer Science, Milwaukee, WI, USA
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Mohammed MA. The Significance of Vitamin D Receptor Gene Polymorphisms for Susceptibility to Hepatocellular Carcinoma in Subjects Infected with Hepatitis C Virus. ACTA ACUST UNITED AC 2017. [DOI: 10.15406/ghoa.2017.07.00246] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Kambale PR, Haldar D, Kabi BC, Kambale KP. Study of Vitamin D Receptor Gene Polymorphism (FokI, TaqI and ApaI) Among Prostate Cancer Patients in North India. J Clin Diagn Res 2017; 11:BC05-BC08. [PMID: 28764147 DOI: 10.7860/jcdr/2017/24290.9976] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Accepted: 02/09/2017] [Indexed: 01/02/2023]
Abstract
INTRODUCTION Incidence of prostate cancer is rising worldwide. Multiple factors have been suggested for the aetiology of prostate cancer including ethnic, genetic and diet. Vitamin D (calcitriol) has been shown to have role in cell growth and differentiation and its deficiency is implicated as one of the aetiological factors in prostate cancer. Prostatic epithelial cells express Vitamin D Receptor (VDR) as well as 1α- hydroxylase enzyme that are required for the synthesis of calcitriol and its action. Polymorphism in VDR gene has been associated with prostate cancer in some epidemiological studies; but, there is paucity of information in the Indian context. AIM The present study was aimed to explore the association of VDR gene polymorphism with the development of prostate cancer. MATERIALS AND METHODS Three Single Nucleotide Polymorphisms (SNP) sites viz., FokI, TaqI and ApaI were analysed in 120 cases of prostate cancer which were compared with their 120 healthy first degree relatives and 120 non-related controls in the Department of Biochemistry in collaboration with the Department of Urology. RESULTS Analysis showed significantly decreased incidence of Tt and Aa genotype in prostate cancer patients as compared to healthy non-relative controls (p=0.016 and 0.043 respectively). As compared to first degree relatives, incidence of Tt genotype is significantly lower in cases (p=0.005). No significant association was found with FokI polymorphism. CONCLUSION This study suggests the protective role of heterozygous genotypes of TaqI and ApaI polymorphism against the development of prostate cancer.
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Affiliation(s)
- Pankaj Ramrao Kambale
- Assistant Professor, Department of Biochemistry, S.M.B.T. Institute of Medical Sciences and Research Centre, Nashik, Maharashtra, India
| | - Deepa Haldar
- Senior Resident, Department of Biochemistry, Vardhman Mahavir Medical College and Safdarjung Hospital, New Delhi, India
| | - B C Kabi
- Professor Director, Department of Biochemistry, Vardhman Mahavir Medical College and Safdarjung Hospital, New Delhi, India
| | - Kalpana Pankaj Kambale
- Senior Lecturer, Department of Periodontology, S.M.B.T. Institute of Dental Sciences and Research, Nasik, Maharashtra, India
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A reappraised meta-analysis of the genetic association between vitamin D receptor BsmI (rs1544410) polymorphism and pulmonary tuberculosis risk. Biosci Rep 2017; 37:BSR20170247. [PMID: 28533426 PMCID: PMC5463263 DOI: 10.1042/bsr20170247] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Revised: 05/19/2017] [Accepted: 05/22/2017] [Indexed: 01/11/2023] Open
Abstract
BsmI (rs1544410) polymorphism located in intron 8 at the 3′-end of the vitamin D receptor (VDR) gene is known to be involved in the regulation of mRNA stability. Many studies evaluated the possible correlation between VDR BsmI polymorphism and the risk of pulmonary tuberculosis (PTB), and reported conflicting results. In the present study, an updated meta-analysis was performed to evaluate the above-said association. PubMed, Embase, and Google Scholar web-databases were searched for the relevant studies and a meta-analysis was performed by calculating pooled odds ratios (ORs) and 95% confidence intervals (95% CIs) for all the genetic models. A total of 19 studies comprising 3644 controls and 2635 cases were included in the present study. Overall no association of PTB in allelic contrast (b compared with B: P=0.285; OR =0.909, 95% CI =0.762–1.083), homozygous (bb compared with BB: P=0.881; OR =0.975, 95% CI =0.700–1.359), heterozygous (bB compared with BB: P=0.834; OR =1.017, 95% CI =0.872–1.185), dominant (bb compared with BB + Bb: P=0.451; OR =0.954, 95% CI =0.843–1.079) and recessive (bb + Bb compared with BB: P=0.983; OR =1.002, 95% CI =0.868–1.156) genetic models in comparison with wild-type allele and genotype BB were observed. However, variant allele (b compared with B: P=0.001; OR =2.289, 95% CI =1.661–3.154) showed increased risk of PTB in Asians. In conclusion, VDR BsmI polymorphism is not a risk factor for PTB in overall population. However, this polymorphism may be interrelated to an increased risk of PTB amongst Asians.
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Seleit I, Bakry OA, Masoud E, Nabil S. Identification of Genotypes and Allelic Frequencies of Vitamin D Receptor Gene Polymorphism (TaqI) in Egyptian Melasma Patients. Indian Dermatol Online J 2017; 8:443-448. [PMID: 29204386 PMCID: PMC5707835 DOI: 10.4103/idoj.idoj_363_16] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Background: Melasma is a characteristic pattern of facial hyperpigmentation, occurring primarily on the forehead, cheeks, and chin, in a mask-like distribution. The pathogenesis of melasma is not fully understood. Vitamin D plays a role in skin pigmentation. It exerts its effect through vitamin D receptor (VDR), which is expressed in variable cells including normal melanocytes. Aim and Objective: The aim of the current work was to investigate if VDR gene polymorphism (TaqI) confers susceptibility to melasma in Egyptian patients. Materials and Methods: A total of 45 female patients with melasma were recruited and 50 healthy subjects that were matched on age, sex, body mass index, and skin phototype, were included as a control group. TaqI polymorphism was investigated using restriction fragment length polymorphism polymerase chain reaction (RFLP PCR). Results: Presence of (t) allele and (tt) genotype was significantly associated with melasma cases compared with control group (P < 0.001 for both). No significant association was found between (tt) genotype or (t) allele and clinical data of the studied cases. Conclusion: TaqI polymorphism is associated with melasma. Further, large-scale studies are recommended to underscore and validate the current findings. It is also necessary for future studies to extend the research to other populations and ethnicities. Investigating other VDR gene polymorphisms in melasma is also warranted. Since melasma is a multifactorial disease, gene–gene and gene–environment interactions should be considered in future genetic-epidemiologic researches to apply more comprehensive insight into the role of VDR gene in its pathogenesis.
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Affiliation(s)
- Iman Seleit
- Department of Dermatology, Andrology and STDs, Faculty of Medicine, Menoufiya University, Egypt
| | - Ola Ahmed Bakry
- Department of Dermatology, Andrology and STDs, Faculty of Medicine, Menoufiya University, Egypt
| | - Eman Masoud
- Department of Medical Biochemistry, Faculty of Medicine, Menoufiya University, Egypt
| | - Shaimaa Nabil
- Department of Dermatology, Andrology and STDs, Faculty of Medicine, Menoufiya University, Egypt
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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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Mahjoubi I, Kallel A, Sbaï MH, Ftouhi B, ben Halima M, Jemaa Z, Feki M, Slimane H, Jemaa R, Kaabachi N. Lack of association between FokI polymorphism in vitamin D receptor gene ( VDR) & type 2 diabetes mellitus in the Tunisian population. Indian J Med Res 2016; 144:46-51. [PMID: 27834325 PMCID: PMC5116897 DOI: 10.4103/0971-5916.193282] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2014] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND & OBJECTIVES The impact of several environmental and genetic factors on diabetes is well documented. Though the association between the vitamin D receptor (VDR) gene polymorphisms and type 2 diabetes mellitus (T2DM) has been analyzed in different ethnic groups, the results have been inconsistent. The aim of this study was to evaluate the possible association between VDR FokI polymorphism and genetic susceptibility to T2DM in Tunisian population. METHODS A total of 439 unrelated patients with T2DM and 302 healthy controls were included in the study. Genomic DNA was extracted from blood and genotyped for the single nucleotide polymorphism (SNP) of FokI (T/C: (rs2228570) by polymerase chain reaction and restriction fragment length polymorphism (PCR-RFLP) analysis. RESULTS The genotype distribution and the relative allelic frequencies for the FokI polymorphism were not significantly different between T2DM and controls: in T2DM patients the frequencies of the CC, CT, and TT genotypes were 52.6, 41.0, and 6.1 per cent, respectively, and in controls the genotype frequencies were 55.6, 38.7, and 5.6 per cent, respectively. In our study, the TT genotype of the FokI polymorphism was not associated with T2DM (OR =1.19, 95% CI 0.63 - 2.25, P=0.577). INTERPRETATION & CONCLUSIONS Our study showed no significant association of the FokI polymorphism in the vitamin D receptor gene with type 2 diabetes mellitus in Tunisian population.
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Affiliation(s)
- Imen Mahjoubi
- Research Laboratory LR99ES11, Biochemistry Department, University of Tunis El Manar, Tunis, Tunisia
| | - Amani Kallel
- Research Laboratory LR99ES11, Biochemistry Department, University of Tunis El Manar, Tunis, Tunisia
| | - Mohamed Hédi Sbaï
- Research Laboratory LR99ES11, Biochemistry Department, University of Tunis El Manar, Tunis, Tunisia
| | - Bochra Ftouhi
- Endocrinology Department, Rabta University Hospital, Tunis, Tunisia
| | - Meriam ben Halima
- Research Laboratory LR99ES11, Biochemistry Department, University of Tunis El Manar, Tunis, Tunisia
| | - Zeineb Jemaa
- Research Laboratory LR99ES11, Biochemistry Department, University of Tunis El Manar, Tunis, Tunisia
| | - Moncef Feki
- Research Laboratory LR99ES11, Biochemistry Department, University of Tunis El Manar, Tunis, Tunisia
| | - Hedia Slimane
- Endocrinology Department, Rabta University Hospital, Tunis, Tunisia
| | - Riadh Jemaa
- Research Laboratory LR99ES11, Biochemistry Department, University of Tunis El Manar, Tunis, Tunisia
| | - Naziha Kaabachi
- Research Laboratory LR99ES11, Biochemistry Department, University of Tunis El Manar, Tunis, Tunisia
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Wu J, Shang DP, Yang S, Fu DP, Ling HY, Hou SS, Lu JM. Association between the vitamin D receptor gene polymorphism and osteoporosis. Biomed Rep 2016; 5:233-236. [PMID: 27446548 DOI: 10.3892/br.2016.697] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Accepted: 03/02/2016] [Indexed: 01/11/2023] Open
Abstract
The influence of the vitamin D receptor (VDR) gene for the risk of osteoporosis remains to be elucidated. The aim of the present study was to understand the distribution of various single-nucleotide polymorphisms (SNPs) within the VDR gene and its association with the risk of osteoporosis. In total, 378 subjects without a genetic relationship were recruited to the study between January 2013 and July 2015. The subjects were divided into three groups, which were the normal (n=234), osteoporosis (n=65) and osteoporosis with osteoporotic fracture (n=79) groups. Three pertinent SNPs of the VDR gene rs17879735 (ApaI, Allele A/a, SNP C>A) were examined with polymerase chain reaction-restriction fragment length polymorphism. The bone mineral density (BMD) of the lumbar spine (L2-L4), femoral neck, Ward's and Tro was measured using dual-energy X-ray absorptiometry. The distributions of genotype frequencies aa, AA and Aa were 48.68, 42.86 and 8.46%, separately. Following analysis of each site, BMD, body mass index (BMI) and age, BMD for each site was negatively correlated with age (P<0.01) and positively correlated with BMI (P<0.01). Correction analysis revealed that there were significant differences in the Ward's triangle BMD among each genotype (P<0.05), in which the aa genotype exhibited the lower BMD (P<0.05). No significant difference was identified among the different genotypes in the occurrence of osteoporosis with osteoporotic fracture (P>0.05). In conclusion, these indicated that the VDR gene ApaI polymorphisms had an important role in the osteoporosis risk.
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Affiliation(s)
- Ju Wu
- Department of Orthopaedics, Affiliated Zhongshan Hospital of Dalian University, Dalian, Liaoning 116001, P.R. China
| | - De-Peng Shang
- Department of Orthopaedics, Affiliated Zhongshan Hospital of Dalian University, Dalian, Liaoning 116001, P.R. China
| | - Sheng Yang
- Department of Orthopaedics, Affiliated Zhongshan Hospital of Dalian University, Dalian, Liaoning 116001, P.R. China
| | - Da-Peng Fu
- Department of Orthopaedics, Affiliated Zhongshan Hospital of Dalian University, Dalian, Liaoning 116001, P.R. China
| | - Hao-Yi Ling
- Department of Orthopaedics, Affiliated Zhongshan Hospital of Dalian University, Dalian, Liaoning 116001, P.R. China
| | - Shuang-Shuang Hou
- Department of Orthopaedics, Affiliated Zhongshan Hospital of Dalian University, Dalian, Liaoning 116001, P.R. China
| | - Jian-Min Lu
- Department of Orthopaedics, Affiliated Zhongshan Hospital of Dalian University, Dalian, Liaoning 116001, P.R. China
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Déficit de la vitamina D e hipertensión arterial. Evidencias a favor. REVISTA COLOMBIANA DE CARDIOLOGÍA 2016. [DOI: 10.1016/j.rccar.2015.06.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Massidda M, Corrias L, Bachis V, Cugia P, Piras F, Scorcu M, Calò CM. Vitamin D receptor gene polymorphisms and musculoskeletal injuries in professional football players. Exp Ther Med 2015; 9:1974-1978. [PMID: 26161149 DOI: 10.3892/etm.2015.2364] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2014] [Accepted: 02/09/2015] [Indexed: 12/19/2022] Open
Abstract
The aim of the present study was to investigate the association between vitamin D receptor (VDR) gene polymorphisms and musculoskeletal injury (MI) in elite football players. In total, 54 male professional football players were recruited from an official Italian professional championship team between 2009 and 2013. The cohort was genotyped for the ApaI, BsmI and FokI polymorphisms and MI data were collected over four football seasons. No significant differences were identified among the genotypes in the incidence rates or severity of MI (P=0.254). In addition, no significant associations were observed between VDR polymorphisms and MI phenotypes (P=0.460). However, the results of the casewise multiple regression analysis indicated that the ApaI genotypes accounted for 18% of injury severity (P=0.002). Therefore, while the BsmI and FokI polymorphisms did not appear to be associated with the severity or incidence of MI, the ApaI genotypes may have influenced the severity of muscle injury in top-level football players.
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Affiliation(s)
- Myosotis Massidda
- Department of Life and Environmental Sciences, University of Cagliari, Cagliari 09100, Italy
| | - Laura Corrias
- Department of Life and Environmental Sciences, University of Cagliari, Cagliari 09100, Italy
| | - Valeria Bachis
- Department of Life and Environmental Sciences, University of Cagliari, Cagliari 09100, Italy
| | - Paolo Cugia
- FMSI CR Sardegna and Cagliari Calcio SpA, Cagliari 09100, Italy
| | - Francesco Piras
- FMSI CR Sardegna and Cagliari Calcio SpA, Cagliari 09100, Italy
| | - Marco Scorcu
- FMSI CR Sardegna and Cagliari Calcio SpA, Cagliari 09100, Italy
| | - Carla M Calò
- Department of Life and Environmental Sciences, University of Cagliari, Cagliari 09100, Italy
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Genetic variants of vitamin D receptor and susceptibility to ischemic stroke. Biochem Biophys Res Commun 2015; 456:631-6. [DOI: 10.1016/j.bbrc.2014.12.007] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2014] [Accepted: 12/02/2014] [Indexed: 02/06/2023]
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Mohammadi Z, Fayyazbakhsh F, Ebrahimi M, Amoli MM, Khashayar P, Dini M, Zadeh RN, Keshtkar A, Barikani HR. Association between vitamin D receptor gene polymorphisms (Fok1 and Bsm1) and osteoporosis: a systematic review. J Diabetes Metab Disord 2014; 13:98. [PMID: 25364703 PMCID: PMC4215021 DOI: 10.1186/s40200-014-0098-x] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/21/2014] [Accepted: 09/30/2014] [Indexed: 01/01/2023]
Abstract
Osteoporosis is a health concern characterized by reduced bone mineral density (BMD) and increased risk of fragility fractures. Many studies have investigated the association between genetic variants and osteoporosis. Polymorphism and allelic variations in the vitamin D receptor gene (VDR) have been found to be associated with bone mineral density. However, many studies have not been able to find this association. Literature review was conducted in several databases, including MEDLINE/Pubmed, Scopus, EMBASE, Ebsco, Science Citation Index Expanded, Ovid, Google Scholar, Iran Medex, Magiran and Scientific Information Database (SID) for papers published between 2000 and 2013 describing the association between Fok1 and Bsm1 polymorphisms of the VDR gene and osteoporosis risk. The majority of the revealed papers were conducted on postmenopausal women. Also, more than 50% studies reported significant relation between Fok1, Bsm1 and osteoporosis. Larger and more rigorous analytical studies with consideration of gene-gene and gene-environment interactions are needed to further dissect the mechanisms by which VDR polymorphisms influence osteoporosis.
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Affiliation(s)
- Zahra Mohammadi
- />Department of biology, Damghan branch, Islamic Azad University, Damghan, Iran
| | - Fateme Fayyazbakhsh
- />Osteoporosis Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
- />Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Mehdi Ebrahimi
- />Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Mahsa M Amoli
- />Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
- />Biomedical Engineering Department, Maziar University, Rouyan, Iran
- />EMRI, Dr Shariati Hospital, North Karegar St., Tehran, 14114 Iran
| | - Patricia Khashayar
- />Osteoporosis Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
- />Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Mahboubeh Dini
- />Non-communicable Disease Department, Iran Ministry of Health and Medical Education, Tehran, Iran
| | - Reza Nezam Zadeh
- />Department of biology, Damghan branch, Islamic Azad University, Damghan, Iran
| | - Abbasali Keshtkar
- />Osteoporosis Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
- />Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Hamid Reza Barikani
- />Dental Implant Research Center, Tehran University of Medical Sciences, Tehran, Iran
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Singh M, Singh P, Singh S, Juneja PK, Kaur T. Vitamin D receptor (VDR) gene polymorphism influences the risk of osteoporosis in postmenopausal women of Northwest India. Arch Osteoporos 2013; 8:147. [PMID: 23975234 DOI: 10.1007/s11657-013-0147-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2013] [Accepted: 08/02/2013] [Indexed: 02/03/2023]
Abstract
SUMMARY The influence of VDR gene for the risk of osteoporosis has remained inconclusive. VDR gene polymorphism in relation to BMD in postmenopausal women of Northwest India revealed a susceptibility haplotype AGT. Possession of this haplotype exacerbates the risk of osteoporosis by 2.8 times, which manifests in recessive mode of inheritance. PURPOSE The purpose of this study is to understand the influence of coordinated effect of various single nucleotide polymorphisms (SNPs) within vitamin D receptor (VDR) gene for the risk of osteoporosis, which has remained undefined so far. METHODS Four pertinent SNPs of VDR gene, i.e., rs2228570, rs1544410, rs17879735, and rs731236 were examined with polymerase chain reaction-restriction fragment length polymorphism in dual energy X-ray absorptiometry verified 188 osteoporotics, 115 osteopenics, and 147 normal postmenopausal women of Northwest India. RESULTS Minor allele 'T' of rs2228570 showed significant influence for the risk of osteoporosis (OR 1.60, 95%CI 1.16-2.20, P=0.004) and also in dominant (OR 2.32, 95%CI 1.47-3.64, P=0.0006) and additive model (OR 2.41, 95%CI 1.49-3.87, P=0.0006) after Bonferroni correction. Minor allele (T) of rs2228570 showed an allele dose effect with BMD of L1-L4 (P=0.009) and FN (P=0.036). Disease association analysis exposed a susceptibility haplotype AGT which influences the risk of osteopenia (OR 2.04, 95%CI 1.03-4.08, P=0.036) and osteoporosis (OR 2.90, 95%CI 1.61-5.38, P=0.00005) after adjusting the effects of age, BMI and years since menopause. This haplotype is significantly associated with BMDs at lumbar spine (P=0.0001) and femoral neck (P=0.016). CONCLUSION In-depth analysis of this haplotype with other methods of Wald statistics and Akaike information criterion confirmed that carriers of each unit of this haplotype AGT increases the risk of osteoporosis by a factor of 2.80±0.34 (β±SE) which manifests (P=0.1 × 10⁻⁶) in its recessive mode of inheritance.
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Affiliation(s)
- Monica Singh
- Molecular Genetics Laboratory, Department of Human Genetics, Punjabi University, Patiala, Punjab, India
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Manchanda PK, Kibler AJ, Zhang M, Ravi J, Bid HK. Vitamin D receptor as a therapeutic target for benign prostatic hyperplasia. Indian J Urol 2013; 28:377-81. [PMID: 23450267 PMCID: PMC3579114 DOI: 10.4103/0970-1591.105745] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
The bioactive form of vitamin D, 1α, 25-dihydroxyvitamin D3 (1α, 25(OH)2D3), is a secosteroid hormone that binds to the vitamin D receptor (VDR), a member of the nuclear receptor super-family expressed in many cell types, and modulates a variety of biological functions. 1α, 25(OH)2D3 is essential for bone and mineral homeostasis, but also regulates growth and differentiation of multiple cell types, and displays immunoregulatory and anti-inflammatory activities. The antiproliferative, prodifferentiative, antibacterial, immunomodulatory and anti-inflammatory properties of synthetic VDR agonists could be exploited to treat a variety of chronic inflammatory and autoimmune diseases, including benign prostatic hyperplasia (BPH). It has been hypothesized that VDR may influence both the risk of a variety of diseases and their occurrence and prognosis. However, earlier studies investigating the associations between specific VDR polymorphisms and various diseases often show controversial results. We performed a systematic review of the current literature on vitamin D and BPH using the PubMed and Web of Knowledge databases. The aim of this review is to summarize the current knowledge on the utility of the VDR gene regarding prostate growth as well as the pathogenesis and treatment of BPH, a complex syndrome characterized by a static component related to prostate overgrowth, a dynamic component responsible for urinary storage symptoms, and an inflammatory component. Despite the massive advances in recent decades, further research is needed to fully characterize the exact underlying mechanisms of VDR action on BPH and to comprehend how these cellular changes translate into clinical development in physical concert.
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Affiliation(s)
- Parmeet Kaur Manchanda
- Division of Endocrinology and Internal Medicine, James Cancer Center, Tzagournis MRF 544, The Ohio State University, Columbus, OH, USA 43210
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Shafia S, Qasim I, Aziz SA, Bhat IA, Nisar S, Shah ZA. Role of vitamin D receptor (VDR) polymorphisms in susceptibility to multiple myeloma in ethnic Kashmiri population. Blood Cells Mol Dis 2013; 51:56-60. [PMID: 23453529 DOI: 10.1016/j.bcmd.2013.02.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2012] [Revised: 01/09/2013] [Accepted: 01/30/2013] [Indexed: 01/17/2023]
Abstract
BACKGROUND Vitamin D regulates many biological processes including bone metabolism, innate immune response, and cell proliferation and differentiation by binding to its receptor VDR. Vitamin D receptor (VDR) gene polymorphisms have been associated with many cancers like breast, colorectal, prostate, and skin. The main aim of this study was to determine whether VDR polymorphisms (ApaI, BsmI and FokI) are associated with increased risk of multiple myeloma. METHODS We designed a case control study where 75 multiple myeloma cases were studied for VDR polymorphisms (ApaI, BsmI and FokI) against 150 controls taken from general population. The polymorphisms of VDR gene were investigated using PCR-RFLP method. RESULTS We did not find any significant association between ApaI and BsmI polymorphisms and multiple myeloma risk (P>0.05), but FokI polymorphism was significantly associated with increased risk for multiple myeloma. We also found a significant association between the ff variant genotype with creatinine levels, albumin levels, and Durie-Salmon stage III. CONCLUSION Our findings suggest that the FokI polymorphism is involved in the increased susceptibility to development and progression in multiple myeloma in the ethnic Kashmiri population. Furthermore these results suggest that ff genotype is associated with higher risk for developing multiple myeloma.
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Affiliation(s)
- Syed Shafia
- Department of Immunology and Molecular Medicine Sher-I-Kashmir Institute of Medical Sciences, Soura, Srinagar, Kashmir, India
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Swapna N, Vamsi UM, Usha G, Padma T. Risk conferred by FokI polymorphism of vitamin D receptor (VDR) gene for essential hypertension. INDIAN JOURNAL OF HUMAN GENETICS 2012; 17:201-6. [PMID: 22345993 PMCID: PMC3276990 DOI: 10.4103/0971-6866.92104] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND: The vitamin D receptor (VDR) gene serves as a good candidate gene for susceptibility to several diseases. The gene has a critical role in regulating the renin-angiotensin system (RAS) influencing the regulation of blood pressure. Hence determining the association of VDR polymorphisms with essential hypertension is expected to help in the evaluation of risk for the condition. AIM: The aim of this study was to evaluate association between VDRFok I polymorphism and genetic susceptibility to essential hypertension. MATERIALS AND METHODS: Two hundred and eighty clinically diagnosed hypertensive patients and 200 normotensive healthy controls were analyzed for Fok I (T/C) [rs2228570] polymorphism by polymerase chain reaction and restriction fragment length polymorphism (PCR-RFLP) analysis. Genotype distribution and allele frequencies in patients and controls, and odds ratios (ORs) were calculated to predict the risk for developing hypertension by the individuals of different genotypes. RESULTS: The genotype distribution and allele frequencies of Fok I (T/C) [rs2228570] VDR polymorphism differed significantly between patients and controls (χ2 of 18.0; 2 degrees of freedom; P = 0.000). FF genotype and allele F were at significantly greater risk for developing hypertension and the risk was elevated for both the sexes, cases with positive family history and habit of smoking. CONCLUSIONS: Our data suggest that VDR gene Fok I polymorphism is associated with the risk of developing essential hypertension
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Affiliation(s)
- N Swapna
- Department of Genetics, Osmania University, Hyderabad, India
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Engel LS, Orlow I, Sima CS, Satagopan J, Mujumdar U, Roy P, Yoo S, Sandler DP, Alavanja MC. Vitamin D receptor gene haplotypes and polymorphisms and risk of breast cancer: a nested case-control study. Cancer Epidemiol Biomarkers Prev 2012; 21:1856-67. [PMID: 22892281 DOI: 10.1158/1055-9965.epi-12-0551] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
BACKGROUND Observational and experimental studies suggest that vitamin D may influence breast cancer etiology. Most known effects of vitamin D are mediated via the vitamin D receptor (VDR). Few polymorphisms in the VDR gene have been well studied in relation to breast cancer risk and results have been inconsistent. METHODS We investigated VDR polymorphisms and haplotypes in relation to breast cancer risk by genotyping 26 single nucleotide polymorphisms (SNP) that (i) had known/suspected impact on VDR function, (ii) were tagging SNPs for the three VDR haplotype blocks among whites, or (iii) were previously associated with breast cancer risk. We estimated odds ratios (OR) and 95% confidence intervals (CI) in relation to breast cancer risk among 270 incident cases and 554 matched controls within the Agricultural Health Study cohort. RESULTS In individual SNP analyses, homozygous carriers of the minor allele for rs2544038 had significantly increased breast cancer risk (OR = 1.5; 95% CI: 1.0-2.5) and homozygous carriers of the minor allele for rs11168287 had significantly decreased risk (OR = 0.6; 95% CI: 0.4-1.0). Carriers of the minor allele for rs2239181 exhibited marginally significant association with risk (OR = 1.4; 95% CI: 0.9-2.0). Haplotype analyses revealed three haplotype groups (blocks "A," "B," and "C"). Haplotype GTCATTTCCTA in block B was significantly associated with reduced risk (OR = 0.5; 95% CI: 0.3-0.9). CONCLUSIONS These results suggest that variation in VDR may be associated with breast cancer risk. IMPACT Our findings may help guide future research needed to define the role of vitamin D in breast cancer prevention.
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Affiliation(s)
- Lawrence S Engel
- Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, NC 27599, USA.
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Bhanushali AA, Lajpal N, Kulkarni SS, Chavan SS, Bagadi SS, Das BR. Frequency of fokI and taqI polymorphism of vitamin D receptor gene in Indian population and its association with 25-hydroxyvitamin D levels. INDIAN JOURNAL OF HUMAN GENETICS 2011; 15:108-13. [PMID: 21088715 PMCID: PMC2922626 DOI: 10.4103/0971-6866.60186] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Abstract
BACKGROUND: The VDR protein is at the centre of the vitamin D endocrine system, a complex physiological system with substantial feedback regulatory mechanisms involved in maintaining serum calcium and 1, 25 dihydroxy vitamin D3. Variations in VDR gene are shown to have implications in several diseases and have also been implicated as an important genetic factor affecting bone mass. AIM: To determine the frequency of Fok I and Taq I variants in healthy Indian individuals and its association with 25-OH-Vitamin D levels. SETTINGS AND DESIGN: Blood samples were collected from 143 unrelated normal individuals (Male-84 and Female-59) and their genotypes determined. MATERIALS AND METHODS: After amplification by polymerase chain reaction, each polymorphism was genotyped by restriction fragment length polymorphism. For 100 normal healthy individuals 25-hydroxyvitamin D estimation was done using DiaSorin kit method. STATISTICAL ANALYSIS: Graph pad software was used to calculate the P values from the Chi-square. RESULTS: Out of 143 samples analyzed for FokI and TaqI polymorphisms the following genotypic frequency was obtained FF 59%, Ff 36%, ff 5% and TT 49%, Tt 43%, tt 8% respectively. CONCLUSIONS: Results indicate that the distribution of the polymorphic loci Fok I and Taq I vary considerably not only in different populations, but also within India. Furthermore, when the genotypes were analyzed with respect to 25-OH-Vitamin D levels, a significant association was seen for the Taq 1 SNP but not with the Fok I.
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Affiliation(s)
- Aparna A Bhanushali
- Research and Development, SRL Ranbaxy Ltd, Plot No. 124, MIDC,17 Street, Andheri (East), Mumbai - 400 093, India
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Selvaraj P. Vitamin D, vitamin D receptor, and cathelicidin in the treatment of tuberculosis. VITAMINS AND HORMONES 2011; 86:307-25. [PMID: 21419277 DOI: 10.1016/b978-0-12-386960-9.00013-7] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Vitamin D plays a major role in bone mineral density and calcium homeostasis. Apart from its classical action, the active form of vitamin D [1,25-dihydroxyvitamin D(3) (1,25(OH)(2)D(3))] influences the innate and adaptive immune functions through vitamin D receptor (VDR) that are present in various cells of the immune system. Vitamin D deficiencies have been associated with development of tuberculosis (TB) disease, caused by Mycobacterium tuberculosis. Vitamin D(3) is shown to enhance macrophage phagocytosis of M. tuberculosis and increases the production of antimicrobial peptide cathelicidin and killing of M. tuberculosis. During the preantibiotic era, exposure to sunlight and supplementation of vitamin D were the methods of choice for treatment of TB. Vitamin D supplementation showed sputum clearance and radiological improvement and reduction in mortality among human immunodeficiency virus (HIV)-infected patients with TB. VDR gene polymorphisms regulate the immunomodulatory effect of vitamin D(3) and are associated with faster sputum conversion during anti-TB treatment. The emerging evidences regarding immunomodulatory properties of vitamin D(3) have rekindled interest in vitamin D as an adjunct to anti-TB therapy. The current review explains the important potential application of vitamin D in enhancing the innate immunity to TB and the role of VDR gene variants on anti-TB treatment.
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Affiliation(s)
- P Selvaraj
- Department of Immunology, Tuberculosis Research Centre, Indian Council of Medical Research, Chennai, India
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Association of vitamin D receptor gene polymorphisms with BMD and their effect on 1, 25-dihydroxy vitamin D3 levels in pre- and postmenopausal South Indian women from Andhra Pradesh. Clin Chim Acta 2010; 412:541-4. [PMID: 21130756 DOI: 10.1016/j.cca.2010.11.035] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2010] [Revised: 11/28/2010] [Accepted: 11/29/2010] [Indexed: 11/20/2022]
Abstract
BACKGROUND Osteoporosis is a multifactorial disorder with a strong genetic component and vitamin D receptor gene has been suggested as a candidate gene for osteoporosis. Therefore the present study was aimed to investigate the role of the VDR Fok 1 gene polymorphism and its influence on vitamin D3 levels and BMD in pre- and postmenopausal osteoporotic women of Indian ethnicity. METHODS 427 osteoporotic women and 460 age matched controls were included in the study. VDR FOK1 gene polymorphism was assessed by the PCR-RFLP method. Serum vitamin D3 was measured by the HPLC method. RESULTS The frequency of ff genotype and f allele was significantly high in pre- and postmenopausal osteoporotic women in comparison with controls (p<0.001).In each case individuals with ff genotype had significantly low BMD in comparison with Ff and FF genotypes. No significant association was found between the genotypes and vitamin D3 levels. CONCLUSION The VDR Fok 1 gene is associated with low bone mass in all our study subjects. The genotype ff of the VDR Fok 1 gene is associated with osteoporosis. Further ff genotype associated significantly with low bone mass. Therefore the f allele of VDR Fok1 gene is an important risk factor for osteoporosis.
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Yaylim-Eraltan I, Arzu Ergen H, Arikan S, Okay E, Oztürk O, Bayrak S, Isbir T. Investigation of the VDR gene polymorphisms association with susceptibility to colorectal cancer. Cell Biochem Funct 2008; 25:731-7. [PMID: 17243190 DOI: 10.1002/cbf.1386] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The effects of 1,25-dihydroxyvitamin D3 are mediated by binding to a specific intracellular vitamin D receptor (VDR), which has been identified in a variety of tissues. Certain polymorphisms in the VDR gene have been associated with various neoplasms. For this purpose, we studied whether VDR TaqI or FokI genotype are associated with serum 25-hydroxyvitamin D3 in 52 controls and 26 patients with colorectal cancer. Polymerase chain reaction (PCR) and restriction fragment length polymorphism (RFLP), and agarose gel electrophoresis tecniques were used to detect these polymorphisms. We measured 25-hydroxyvitamin D3 serum levels by ELISA. The frequencies of the FF, Ff and ff genotypes were 73.1%, 11.5%, 15.4% in colorectal cancer patients and 38.5%, 59.6%, 1.9% in healthy controls, respectively. We observed the T allele in 50% and 58.7%, and the t allele in 50% and 41.3% of colorectal cancer patients and the control group, respectively. In patients with colorectal cancer who have TT genotype, serum 25-hydroxyvitamin D3 level was lower than those with Tt/tt genotype (p:0.016). The frequency of subjects with TTFf or TtFf genotype in colorectal cancer patients was very low compared with all other genotypes (OR = 0.112; 95%CI 0.030-0.419). These data suggest that VDR TtFf or TTFf genotypes may protect against colorectal carcinogenesis. However, further studies are necessary to confirm these findings.
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Affiliation(s)
- Ilhan Yaylim-Eraltan
- Institute of Experimental Medical Research, Department of Molecular Medicine, Istanbul University, Istanbul, Turkey
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Uitterlinden AG, Fang Y, Van Meurs JBJ, Pols HAP, Van Leeuwen JPTM. Genetics and biology of vitamin D receptor polymorphisms. Gene 2004; 338:143-56. [PMID: 15315818 DOI: 10.1016/j.gene.2004.05.014] [Citation(s) in RCA: 1030] [Impact Index Per Article: 51.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2004] [Revised: 04/26/2004] [Accepted: 05/17/2004] [Indexed: 12/14/2022]
Abstract
The vitamin D endocrine system is involved in a wide variety of biological processes including bone metabolism, modulation of the immune response, and regulation of cell proliferation and differentiation. Variations in this endocrine system have, thus, been linked to several common diseases, including osteoarthritis (OA), diabetes, cancer, cardiovascular disease, and tuberculosis. Evidence to support this pleiotropic character of vitamin D has included epidemiological studies on circulating vitamin D hormone levels, but also genetic epidemiological studies. Genetic studies provide excellent opportunities to link molecular insights with epidemiological data and have therefore gained much interest. DNA sequence variations, which occur frequently in the population, are referred to as "polymorphisms" and can have modest and subtle but true biological effects. Their abundance in the human genome as well as their high frequencies in the human population have made them targets to explain variation in risk of common diseases. Recent studies have indicated many polymorphisms to exist in the vitamin D receptor (VDR) gene, but the influence of VDR gene polymorphisms on VDR protein function and signaling is largely unknown. So far, three adjacent restriction fragment length polymorphisms for BsmI, ApaI, and TaqI, respectively, at the 3' end of the VDR gene have been the most frequently studied. Because these polymorphisms are probably nonfunctional, linkage disequilibrium with one or more truly functional polymorphisms elsewhere in the VDR gene is assumed to explain the associations observed. Research is therefore focussed on documenting additional polymorphisms across the VDR gene to verify this hypothesis and on trying to understand the functional consequences of the variations. Substantial progress has been made that will deepen our understanding of variability in the vitamin D endocrine system and might find applications in risk assessment of disease and in predicting response-to-treatment.
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Affiliation(s)
- André G Uitterlinden
- Genetic Laboratory, Room Ee575, Department of Internal Medicine, Erasmus MC, Dr. Molewaterplein 50, PO Box 1738, NL-3000 DR Rotterdam, The Netherlands.
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Chuang HY, Yu KT, Ho CK, Wu MT, Lin GT, Wu TN. Investigations of Vitamin D Receptor Polymorphism Affecting Workers’ Susceptibility to Lead. J Occup Health 2004; 46:316-22. [PMID: 15308833 DOI: 10.1539/joh.46.316] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Gene polymorphism is an important factor that affects human susceptibility to toxins. For example, previous studies suggested that the ALAD genotype is an important factor affecting workers' susceptibility to lead toxic effects, including hemopoietic and nervous system. But we have had few researches in Taiwan, though there are thousands of workers involved in lead-related industries. On the other hand, although it is well known that lead deposits in the bone mineral component and interacts with calcium, vitamin D receptor may therefore be an important factor in the metabolism of lead. Some studies suggested that different vitamin D receptor genotypes have various kinds of receptor activity. The goal of this study was to investigate the polymorphism affecting workers' susceptibility to lead. Three allelic variants of the VDR gene were defined by means of the polymerase chain reaction (PCR) and three restriction enzymes (ApaI, BsmI, and TaqI). We determined the relationships of different VDR genotypes (AA, Aa, aa, BB, Bb, bb, TT, Tt, and tt) to blood lead and the index of cumulative blood lead levels (ICL). Altogether we analyzed 544 workers' VDR genotypes (BsmI, TaqI, and ApaI) and compared to their blood lead levels and ICL in the VDR genotypes. The results showed that workers had higher blood lead levels and ICL in the Apa I- aa genotypes, but this is not statistically significant when adjusted for potential confounding factors. Other characteristics, such as exposure status, smoking and alcohol drinking, were significantly associated with ICL and time-weighted ICL. Regression analyses suggested that exposure status and personal habits (smoking and alcohol drinking) are still the major effects on blood lead parameters for lead workers rather than genotypes. In conclusion, VDR genotypes did not significantly affect the long term blood lead parameters after adjustment for all factors, but industrial hygiene improvement, including engineering control and health education, are the most important ways to protect workers' health.
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Affiliation(s)
- Hung-Yi Chuang
- Department of Occupational Medicine, Kaohsiung Medical University Hospital, Kaohsiung City, Taiwan, ROC.
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Collins JE, Heward JM, Nithiyananthan R, Nejentsev S, Todd JA, Franklyn JA, Gough SCL. Lack of association of the vitamin D receptor gene with Graves' disease in UK Caucasians. Clin Endocrinol (Oxf) 2004; 60:618-24. [PMID: 15104566 DOI: 10.1111/j.1365-2265.2004.02015.x] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Vitamin D modulates the immune system by suppressing the proliferation of activated T cells, with its actions being directed through the vitamin D receptor (VDR). A number of single nucleotide polymorphisms (SNPs) have been identified in the VDR gene, of which several have been associated with autoimmune diseases, including type 1 diabetes and Graves' disease (GD) in Japanese females. The aim of this study was to test for association of polymorphisms of the VDR gene in the genetic susceptibility to GD in UK Caucasians. DESIGN Target DNA for five previously published SNPs, four novel SNPs and one microsatellite marker was amplified by the polymerase chain reaction (PCR). Subsequent genotyping was performed using restriction fragment length polymorphism (RFLP) or microsatellite genotyping analysis, according to the type of VDR polymorphism. PATIENTS We obtained DNA from a case-control dataset consisting of 768 patients with GD and 864 control subjects. All patients and control subjects were Caucasians born in the UK, and all gave informed, written consent. MEASUREMENTS Frequencies of the alleles and genotypes of the ten VDR gene polymorphisms were compared between patients and control subjects using the chi2 test. Odds ratios were calculated using Woolf's method with Haldane's modification for small numbers and D prime (D') was calculated to assess the level of linkage disequilibrium (LD) between the ten polymorphisms. RESULTS No differences in allele or genotype frequencies were observed between GD cases and control subjects for any of the nine SNPs studied. The S allele of the PolyA microsatellite marker was slightly more frequent in GD cases when compared with control subjects (chi2= 4.364, P = 0.04). Strongest LD between markers was observed towards the 3' end of the VDR gene but there was no evidence of association with disease. CONCLUSION This is the largest and most comprehensive study of the VDR gene in GD to date and these data suggest that these polymorphisms of the VDR gene do not contribute to GD susceptibility in the UK.
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Affiliation(s)
- J E Collins
- Division of Medical Sciences, University of Birmingham, Institute of Biomedical Research, Birmingham, UK
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Barsony J, Prufer K. Vitamin D receptor and retinoid X receptor interactions in motion. VITAMINS AND HORMONES 2003; 65:345-76. [PMID: 12481554 DOI: 10.1016/s0083-6729(02)65071-x] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Vitamin D receptor (VDR) and retinoid X receptor (RXR) are members of the nuclear receptor superfamily and they bind target DNA sequences as heterodimers to regulate transcription. This article surveys the latest findings regarding the roles of dimerizing RXR in VDR function and emphasizes potential areas for future developments. We first highlight the importance of dimerization with RXR for both the ligand-independent (hair growth) and ligand-dependent functions of VDR (calcium homeostasis, bone development and mineralization, control of cell growth and differentiation). Emerging information regarding the regulatory control of dimerization based on biochemical, structural, and genetic studies is then presented. Finally, the main focus of this article is a new dynamic perspective of dimerization functions, based on recent research with fluorescent protein chimeras in living cells by microscopy. These studies revealed that both VDR and RXR constantly shuttle between the cytoplasm and the nucleus and between subnuclear compartments, and showed the transient nature of receptor--DNA and receptor--coregulator interactions. Because RXR dimerizes with most of the nuclear receptors, regulation of receptor dynamics by RXR has a broad significance.
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Affiliation(s)
- J Barsony
- Laboratory of Cell Biochemistry and Biology, National Institutes of Diabetes, Digestive and Kidney Diseases, NIH, Bethesda, Maryland 20892, USA.
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