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Vitamin D Receptor Gene

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https://www.readbyqxmd.com/read/28446629/vitamin-d-receptor-and-megalin-gene-polymorphisms-are-associated-with-longitudinal-cognitive-change-among-african-american-urban-adults
#1
May A Beydoun, Salman M Tajuddin, Greg A Dore, Jose-Atilio Canas, Hind A Beydoun, Michele K Evans, Alan B Zonderman
Background: The link between longitudinal cognitive change and polymorphisms in the vitamin D receptor (VDR) and MEGALIN [or LDL receptor-related protein 2 (LRP2)] genes remains unclear, particularly among African-American (AA) adults.Objectives: We aimed to evaluate associations of single nucleotide polymorphisms (SNPs) for VDR [rs11568820 (Cdx-2:T/C), rs1544410 (BsmI:G/A), rs7975232 (ApaI:A/C), rs731236 (TaqI:G/A)] and LRP2 [rs3755166:G/A,rs2075252:C/T, rs2228171:C/T] genes with longitudinal cognitive performance change in various domains of cognition...
April 26, 2017: Journal of Nutrition
https://www.readbyqxmd.com/read/28442641/regulation-of-uridine-diphosphate-glucuronosyltransferase-2b15-expression-during-ovulation-in-the-rat
#2
Phuong T M Dam, You-Jee Jang, Jae-Il Park, Bum-Chae Choi, Sang-Jin Song, Sang-Young Chun
Uridine diphosphate-glucuronosyltransferase 2B15 (UGT2B15) conjugates 5α-androstane-3α, 17β-diol (3α-diol) to 3α-diol glucuronide (3α-diol G) in steroid target tissues. The present study investigated the regulation of UGT2B15 expression during the ovulatory process in the rat. Real-time PCR analysis revealed that treatment of immature rats with equine chorionic gonadotropin followed by human chorionic gonadotropin transiently stimulated UGT2B15 gene expression in granulosa cells of preovulatory follicles within 6 h...
April 22, 2017: Endocrine Journal
https://www.readbyqxmd.com/read/28433688/vitamin-d-downregulates-the-il-23-receptor-pathway-in-human-mucosal-ilc3
#3
Viktoria Konya, Paulo Czarnewski, Marianne Forkel, Anna Rao, Efthymia Kokkinou, Eduardo J Villablanca, Sven Almer, Ulrik Lindforss, Danielle Friberg, Charlotte Höög, Peter Bergman, Jenny Mjösberg
BACKGROUND: Vitamin D deficiency is a risk factor for inflammatory bowel disease (IBD). The IL-23-driven tissue-resident ILC3 play essential roles in intestinal immunity, and targeting IL-23/12 is a promising approach in IBD therapy. OBJECTIVE: We set out to define the role of 1α,25-dihydroxy vitamin D3 (1,25D) in regulating functional responses of human mucosal ILC3 to IL-23 plus IL-1β stimulation. METHODS: Transcriptomes of sorted tonsil ILC3 were assessed by microarray analysis...
April 19, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28432711/vdr-gene-methylation-as-a-molecular-adaption-to-light-exposure-historic-recent-and-genetic-influences
#4
Emma L Beckett, Patrice Jones, Martin Veysey, Konsta Duesing, Charlotte Martin, John Furst, Zoe Yates, Nina G Jablonski, George Chaplin, Mark Lucock
OBJECTIVES: The vitamin D receptor (VDR) is a member of the nuclear receptor family of transcription factors. We examined whether degree of VDR gene methylation acts as a molecular adaptation to light exposure. We explored this in the context of photoperiod at conception, recent UV irradiance at 305 nm, and gene-latitude effects. METHODS: Eighty subjects were examined for VDR gene-CpG island methylation density. VDR gene variants were also examined by PCR-RFLP. RESULTS: Photoperiod at conception was significantly positively related to VDR methylation density, explaining 17% of the variance in methylation (r(2)  = 0...
April 22, 2017: American Journal of Human Biology: the Official Journal of the Human Biology Council
https://www.readbyqxmd.com/read/28427151/fine-tuning-of-vitamin-d-receptor-vdr-activity-by-post-transcriptional-and-post-translational-modifications
#5
REVIEW
Ondrej Zenata, Radim Vrzal
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...
February 25, 2017: Oncotarget
https://www.readbyqxmd.com/read/28425954/inherited-variation-in-vitamin-d-genes-and-type-1-diabetes-predisposition
#6
REVIEW
Marissa Penna-Martinez, Klaus Badenhoop
The etiology and pathophysiology of type 1 diabetes remain largely elusive with no established concepts for a causal therapy. Efforts to clarify genetic susceptibility and screening for environmental factors have identified the vitamin D system as a contributory pathway that is potentially correctable. This review aims at compiling all genetic studies addressing the vitamin D system in type 1 diabetes. Herein, association studies with case control cohorts are presented as well as family investigations with transmission tests, meta-analyses and intervention trials...
April 20, 2017: Genes
https://www.readbyqxmd.com/read/28407346/vitamin-d-receptor-gene-polymorphisms-in-serbian-patients-with-bronchial-asthma-a-case-control-study
#7
Milena Despotovic, Tatjana Jevtovic Stoimenov, Ivana Stankovic, Jelena Basic, Dusica Pavlovic
Vitamin D and single nucleotide polymorphisms (SNPs) in vitamin D receptor (VDR) gene are potentially involved in the pathogenesis of bronchial asthma (BA); however, precise mechanisms by which vitamin D reduces the inflammation and the role of VDR SNPs in BA are not completely understood. The aim of this study was to examine the possible associations of FokI, BsmI, ApaI and TaqI SNPs with BA. A total of 168 subjects were screened for VDR SNPs using polymerase chain reaction restriction fragment length polymorphism (PCR-RFLP) method...
April 13, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28406554/vitamin-d-receptor-gene-polymorphisms-association-with-the-risk-of-sepsis-and-mortality
#8
K Zeljic, A Elkilany, G Supic, M Surbatovic, D Djordjevic, Z Magic, B Bozic
Association of vitamin D receptor (VDR) gene polymorphisms with sepsis risk and mortality was studied. VDR FokI CC genotype was associated with increased sepsis risk (OR = 13.396, p = .000009) compared to the TT genotype. Results suggest possible role of VDR FokI (rs2228570) as a molecular biomarker of increased sepsis risk.
April 12, 2017: International Journal of Immunogenetics
https://www.readbyqxmd.com/read/28394106/association-between-serum-vitamin-d-level-and-glaucoma-in-women
#9
Željka Vuković Arar, Marijana Knežević Praveček, Blaženk Miškić, Zoran Vatavuk, Jadranka Vuković Rodriguez, Sandra Sekelj
The aim of the study was to determine whether serum vitamin D level is lower in female patients with glaucoma as compared with control group. The mechanism by which vitamin D reduces intraocular pressure is not fully clarified. Almost all tissues possess vitamin D receptor (VDR). The mice lacking VDR (VDR knockout mice) have greatly contributed to the understanding of the general vitamin D physiologic function. VDR has been found in some ganglion layer cells, external and internal nuclear layers of retina, and in retinal pigment epithelium, while VDR epitopes have also been found in the ciliary body epithelium, pointing to the role of this protein in eye physiology...
June 2016: Acta Clinica Croatica
https://www.readbyqxmd.com/read/28393228/microarray%C3%A2-based-screening-of-differentially-expressed-genes-in-glucocorticoid%C3%A2-induced-avascular-necrosis
#10
Gangyong Huang, Yibing Wei, Guanglei Zhao, Jun Xia, Siqun Wang, Jianguo Wu, Feiyan Chen, Jie Chen, Jingshen Shi
The underlying mechanisms of glucocorticoid (GC)‑induced avascular necrosis of the femoral head (ANFH) have yet to be fully understood, in particular the mechanisms associated with the change of gene expression pattern. The present study aimed to identify key genes with a differential expression pattern in GC‑induced ANFH. E‑MEXP‑2751 microarray data were downloaded from the ArrayExpress database. Differentially expressed genes (DEGs) were identified in 5 femoral head samples of steroid‑induced ANFH rats compared with 5 placebo‑treated rat samples...
April 5, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28392355/association-of-vitamin-d-receptor-gene-polymorphisms-with-metabolic-syndrome-and-its-components-among-adult-arabs-from-the-united-arab-emirates
#11
Hayder A Hasan, Ra'ed O AbuOdeh, Wan Abdul Manan Bin Wan Muda, Hamid Jan Bin Jan Mohamed, Ab Rani Samsudin
AIMS: The aim was to investigate relationships of Vitamin D receptor gene (VDR) polymorphisms to the components of MetS among Arabs adult residing in the United Arab Emirates. METHODS: A cross-sectional study of 198 Arabs adult (50 males and 148 females). Serum levels of glucose, vitamin D, HDL-C, and TG, and blood pressure were measured. FokI, BsmI & TaqI genotyping of VDR were investigated using PCR-RFLP technique. RESULTS: Age of the participants was 21(9) years with a BMI of 26...
April 2, 2017: Diabetes & Metabolic Syndrome
https://www.readbyqxmd.com/read/28388281/the-vitamin-d-receptor-functional-variant-rs2228570-c-t-does-not-associate-with-type-2-diabetes-mellitus
#12
Laura Bertoccini, Federica Sentinelli, Frida Leonetti, Diego Bailetti, Danila Capoccia, Flavia A Cimini, Ilaria Barchetta, Michela Incani, Andrea Lenzi, Efisio Cossu, M Gisella Cavallo, Marco G Baroni
AIM: Vitamin D acts through the binding to the vitamin D receptor (VDR). Several polymorphisms in VDR gene have been studied. Among these, the rs2228570 C>T (FokI) variant has been demonstrated to be functional, leading to a protein with a different size and activity. So far, genetic studies on the association between VDR gene rs2228570 single nucleotide polymorphism (SNP) and type 2 diabetes mellitus (T2DM) showed contradictory results. Thus, we performed an association study in a large cohort of adult Italian subjects with T2DM and in nondiabetic controls...
April 7, 2017: Endocrine Research
https://www.readbyqxmd.com/read/28385183/vitamin-d-receptor-gene-polymorphisms-are-associated-with-multiple-sclerosis-in-mexican-adults
#13
Víctor Hugo Bermúdez-Morales, Geny Fierros, Roberto Lopez Lopez, Gaby Martínez-Nava, Mario Flores-Aldana, José Flores-Rivera, Carlos Hernández-Girón
BACKGROUND: Multiple sclerosis (MS) is the most prevalent autoimmune inflammatory demyelinating disease of the central nervous system (CNS) in young adults. More than 50 genomic regions have been associated with MS susceptibility. Due the important immune-modulating properties of Vitamin D, Vitamin D receptor (VDR) gene polymorphisms - which interfere with the actions of Vitamin D- could be related to increased risk of MS. METHODS: We studied 120 patients fulfilling the McDonald criteria for MS (81 females and 39 males) and 180 healthy unrelated controls, nested in a case-Control study, and were recruited from the National Institute of Neurology and Neurosurgery, Manuel Velasco Suárez in Mexico City...
May 15, 2017: Journal of Neuroimmunology
https://www.readbyqxmd.com/read/28382877/common-genetic-variants-are-associated-with-lower-serum-25-hydroxyvitamin-d-concentrations-across-the-year-among-children-at-northern-latitudes
#14
Rikke A Petersen, Lesli H Larsen, Camilla T Damsgaard, Louise B Sørensen, Mads F Hjorth, Rikke Andersen, Inge Tetens, Henrik Krarup, Christian Ritz, Arne Astrup, Kim F Michaelsen, Christian Mølgaard
In a longitudinal study including 642 healthy 8-11-year-old Danish children, we investigated associations between vitamin D dependent SNP and serum 25-hydroxyvitamin D (25(OH)D) concentrations across a school year (August-June). Serum 25(OH)D was measured three times for every child, which approximated measurements in three seasons (autumn, winter, spring). Dietary and supplement intake, physical activity, BMI and parathyroid hormone were likewise measured at each time point. In all, eleven SNP in four vitamin D-related genes: Cytochrome P450 subfamily IIR1 (CYP2R1); 7-dehydrocholesterol reductase/nicotinamide adenine dinucleotide synthetase-1(DHCR7/NADSYN1); group-specific complement (GC); and vitamin D receptor were genotyped...
April 6, 2017: British Journal of Nutrition
https://www.readbyqxmd.com/read/28381354/1-25-dihydroxyvitamin-d3-prevents-deleterious-effects-of-homocysteine-on-mitochondrial-function-and-redox-status-in-heart-slices
#15
Aline Longoni, Janaina Kolling, Cassiana Siebert, João Paulo Dos Santos, Jussemara Souza da Silva, Letícia F Pettenuzzo, Leo Anderson Meira-Martins, Carlos-Alberto Gonçalves, Adriano M de Assis, Angela T S Wyse
Because homocysteine (Hcy) is a risk factor for cardiovascular disease, and vitamin D deficiency can contribute to cardiovascular pathologies. In the present study, we tested the hypothesis that Hcy could impair energy metabolism, mitochondrial function, and redox status in heart slices of Wistar rats and that 1,25-dihydroxivitamin D3 (calcitriol) treatment could prevent such effects. Heart slices were first pretreated with 3 different concentrations of calcitriol (50, 100, and 250nmol/L) for 30minutes at 37°C, after which Hcy was added to promote deleterious effects on metabolism...
February 2017: Nutrition Research
https://www.readbyqxmd.com/read/28380424/association-of-vegf-and-vdr-gene-gene-and-gene-smoking-interaction-on-risk-of-multiple-myeloma-in-chinese-han-population
#16
Peng Chen, Zhen-Lan Du, Yuan Zhang, Bing Liu, Zhi Guo, Jin-Xing Lou, Xue-Peng He, Hui-Ren Chen
AIMS: To investigate the association of several single nucleotide polymorphisms (SNPs) within vascular endothelial growth factor (VEGF) and vitamin D receptor (VDR) gene polymorphisms and additional gene- gene and gene- smoking interaction with multiple myeloma (MM) risk in Chinese population. METHODS: Generalized multifactor dimensionality reduction (GMDR) was used to screen the best interaction combination among SNPs and smoking. Logistic regression was performed to investigate association between 6 SNPs within VEGF and VDR gene, additional gene- gene and gene- smoking interaction on MM risk...
March 23, 2017: Oncotarget
https://www.readbyqxmd.com/read/28377587/overexpression-of-gsn-could-decrease-inflammation-and-apoptosis-in-eae-and-may-enhance-vitamin-d-therapy-on-eae-ms
#17
Jifang Gao, Zhaoyu Qin, Xinyuan Guan, Juanjuan Guo, Huaqing Wang, Shilian Liu
The decrease of gelsolin (GSN) in the blood has been reported in multiple sclerosis (MS) patients and experimental allergic encephalomyelitis (EAE) animals, but the protective effect of GSN on EAE/MS lacks of evidence. In our study, we increased the GSN level in EAE by injecting GSN-overexpress lentivirus (LV-GSN) into the lateral ventricle and caudal vein and found that GSN administration can delay the onset and decrease the severity of EAE. Vitamin D is proven to have a therapeutic effect on MS/EAE; however, we previously found that vitamin D caused a downregulation of GSN, which might limit vitamin D efficacy...
April 4, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28376475/osteopontin-bone-morphogenetic-protein-4-and-vitamin-d-receptor-gene-polymorphisms-in-the-susceptibility-and-clinical-severity-of-spinal-tuberculosis
#18
Guohua Wang, Liangyi Xie, Jianzhong Hu, Hongbin Lu, Xiangyang Liu, Yong Cao, Bin Liu, Yi Zhang, Xiongjie Shen
BACKGROUND/AIMS: Spinal tuberculosis (TB) is a common and dangerous form of extrapulmonary TB with unclear mechanisms in its occurrence and progression. This study investigated the clinical significances of bone morphogenetic protein-4 (BMP-4), osteopontin (OPN), and vitamin D receptor (VDR) gene polymorphism, mRNA and protein expression in spinal TB patients. METHODS: BMP-4 and OPN gene polymorphisms were detected by direct DNA sequencing, while VDR-FokI polymorphisms were analyzed using PCR-RFLP...
April 4, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28372324/apolipoprotein-e-isoforms-differentially-regulate-alzheimer-s-disease-and-amyloid-%C3%AE-induced-inflammatory-response-in-vivo-and-in-vitro
#19
Evan Dorey, Michelle Bamji-Mirza, Dema Najem, Yan Li, Hong Liu, Debbie Callaghan, Douglas Walker, Lih-Fen Lue, Danica Stanimirovic, Wandong Zhang
Neuroinflammation plays a critical role in neuronal dysfunction and death of Alzheimer's disease (AD). ApoE4 is a major risk factor of AD, while ApoE2 is neuroprotective. Little is known about the roles of ApoE isoforms in the neuroinflammation seen in AD. Their roles and mechanisms in Aβ-induced/neuroinflammation were investigated in this study using in vivo and in vitro models. Rat astrocytes were treated with lipid-poor recombinant hApoE and/or Aβ42. Mouse astrocyte lines-expressing lipidated hApoE were treated with Aβ42 and/or vitamin D receptor (VDR) agonist, 1α,25-dihydroxyvitamin D3...
2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28370465/pharmacologic-calcitriol-inhibits-osteoclast-lineage-commitment-via-the-bmp-smad1-i%C3%AE%C2%BAb-nf-%C3%AE%C2%BAb-pathway
#20
Anna Li, Qian Cong, Xuechun Xia, Wai Fook Leong, James Yeh, Dengshun Miao, Yuji Mishina, Huijuan Liu, Baojie Li
Vitamin D is involved in a range of physiological processes and its active form and analogs have been used to treat diseases such as osteoporosis. Yet how vitamin D executes its function remains unsolved. Here we show that the active form of vitamin D calcitriol increases the peak bone mass in mice by inhibiting osteoclastogenesis and bone resorption. Although calcitriol modestly promoted osteoclast maturation, it strongly inhibited osteoclast lineage commitment from its progenitor monocyte by increasing Smad1 transcription via vitamin D receptor and enhancing BMP-Smad1 activation, which in turn led to increased IκBα expression and decreased NF-κB activation and NFATc1 expression, with IκBα being a Smad1 target gene...
March 31, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
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