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Vitamin D Receptor Gene

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https://www.readbyqxmd.com/read/28327211/reduced-fetal-vitamin-d-status-by-maternal-undernutrition-during-discrete-gestational-windows-in-sheep
#1
J K Cleal, M R Hargreaves, K R Poore, J C Y Tang, W D Fraser, M A Hanson, L R Green
Placental transport of vitamin D and other nutrients (e.g. amino acids, fats and glucose) to the fetus is sensitive to maternal and fetal nutritional cues. We studied the effect of maternal calorific restriction on fetal vitamin D status and the placental expression of genes for nutrient transport [aromatic T-type amino acid transporter-1 (TAT-1); triglyceride hydrolase/lipoprotein uptake facilitator lipoprotein lipase (LPL)] and vitamin D homeostasis [CYP27B1; vitamin D receptor (VDR)], and their association with markers of fetal cardiovascular function and skeletal muscle growth...
March 22, 2017: Journal of Developmental Origins of Health and Disease
https://www.readbyqxmd.com/read/28325259/vitamin-d-analogues-potential-use-in-cancer-treatment
#2
REVIEW
Michael J Duffy, Alyson Murray, Naoise C Synnott, Norma O'Donovan, John Crown
The vitamin D receptor (VDR) is a member of the thyroid-steroid family of nuclear transcription factors. Following binding of the active form of vitamin D, i.e., 1,25(OH)2D3 (also known as calcitriol) and interaction with co-activators and co-repressors, VDR regulates the expression of several different genes. Although relatively little work has been carried out on VDR in human cancers, several epidemiological studies suggest that low circulating levels of vitamin D are associated with both an increased risk of developing specific cancer types and poor outcome in patients with specific diagnosed cancers...
April 2017: Critical Reviews in Oncology/hematology
https://www.readbyqxmd.com/read/28323045/vitamin-d-receptor-gene-polymorphisms-among-emirati-patients-with-type-2-diabetes-mellitus
#3
Habiba Al Safar, Sarah El Hajj Chehadeh, Laila Abdel-Wareth, Afrozul Haq, Herbert F Jelinek, Gehad ElGhazali, Fatme Al Anouti
At a prevalence rate close to 19.5%, the UAE has one of the highest rates of Type 2 Diabetes Mellitus (T2DM) in the world. Genome wide association studies (GWAS) have led to the identification of several genetic variants that are associated with T2DM. Recently, genes involved in vitamin D metabolism have gained interest because of the association between vitamin D deficiency (VDD) and increased risk for T2DM. Among these, the Vitamin D receptor (VDR) gene is a good candidate for T2DM susceptibility. The aim of this study was to investigate the association between VDR polymorphisms and T2DM among a representative sample of the Emirati population...
March 16, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28318299/lithocholic-acid-a-new-emergent-protector-of-intestinal-calcium-absorption-under-oxidant-conditions
#4
Ana M Marchionatti, Adriana Pérez, María A Rivoira, Valeria A Rodríguez, Nori G Tolosa de Talamoni
LCA and 1,25(OH)2D3 are vitamin D receptor ligands with different binding affinity. The secosteroid stimulates intestinal Ca(2+) absorption. Whether LCA alters this process remains unknown. The aim of our work was to determine the effect of LCA on intestinal Ca(2+) absorption in the absence or presence of NaDOC, bile acid that inhibits the cation transport. The data show that LCA by itself did not alter intestinal Ca(2+) absorption, but prevented the inhibitory effect of NaDOC. The concomitant administration of LCA avoided the reduction of intestinal alkaline phosphatase activity caused by NaDOC...
March 20, 2017: Biochemistry and Cell Biology, Biochimie et Biologie Cellulaire
https://www.readbyqxmd.com/read/28315703/molecular-endocrinology-of-vitamin-d-on-the-epigenome-level
#5
REVIEW
Carsten Carlberg
The molecular endocrinology of vitamin D is based on the facts that i) its metabolite 1α,25-dihydroxyvitamin D3 (1,25(OH)2D3) is the high affinity ligand of the nuclear receptor vitamin D receptor (VDR) and ii) the transcription factor VDR is the unique target of 1,25(OH)2D3 in the nucleus. Short-term alterations of the epigenome are primarily changes in the post-translational modification status of nucleosome-forming histone proteins, the consequences of which are i) a local increase or decrease in chromatin accessibility and ii) the activation or repression of gene transcription...
March 16, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28301870/the-impact-of-vitamin-d-pathway-genetic-variation-and-circulating-25-hydroxyvitamin-d-on-cancer-outcome-systematic-review-and-meta-analysis
#6
P G Vaughan-Shaw, F O'Sullivan, S M Farrington, E Theodoratou, H Campbell, M G Dunlop, L Zgaga
BACKGROUND: Vitamin D has been linked with improved cancer outcome. This systematic review and meta-analysis investigates the relationship between cancer outcomes and both vitamin D-related genetic variation and circulating 25-hydroxyvitamin D (25OHD) concentration. METHODS: A systematic review and meta-analysis of papers until November 2016 on PubMed, EMBASE and Web of Science pertaining to association between circulating vitamin D level, functionally relevant vitamin D receptor genetic variants and variants within vitamin D pathway genes and cancer survival or disease progression was performed...
March 16, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28301319/hereditary-vitamin-d-resistant-rickets-in-lebanese-patients-the-p-r391s-and-p-h397p-variants-have-different-phenotypes
#7
Rabih Andary, Abdul-Karim El-Hage-Sleiman, Theresa Farhat, Sami Sanjad, Georges Nemer
BACKGROUND: Hereditary vitamin D-resistant rickets (HVDRR) is an autosomal recessive disorder caused by mutations in the vitamin D receptor (VDR) gene. Variable phenotypes have been associated with these mutations, and some of these were linked to the effects they have on the interacting partners of VDR, mainly the retinoic X receptor (RXR). METHODS: We examined four patients with HVDRR from three unrelated Lebanese families. All parents were consanguineous with normal phenotype...
March 16, 2017: Journal of Pediatric Endocrinology & Metabolism: JPEM
https://www.readbyqxmd.com/read/28288905/bioinformatic-approaches-to-interrogating-vitamin-d-receptor-signaling
#8
Moray J Campbell
Bioinformatics applies unbiased approaches to develop statistically-robust insight into health and disease. At the global, or "20,000 foot" view bioinformatic analyses of vitamin D receptor (NR1I1/VDR) signaling can measure where the VDR gene or protein exerts a genome-wide significant impact on biology; VDR is significantly implicated in bone biology and immune systems, but not in cancer. With a more VDR-centric, or "2000 foot" view, bioinformatic approaches can interrogate events downstream of VDR activity...
March 10, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28285414/a-population-association-study-of-vitamin-d-receptor-gene-polymorphisms-and-haplotypes-with-the-risk-of-systemic-lupus-erythematosus-in-a-chinese-population
#9
Xu-E Chen, Pu Chen, Shan-Shan Chen, Jin Lu, Ting Ma, Guang Shi, Ya Zhou, Ji Li, Liang Sheng
The aim of the study is to investigate the association of vitamin D receptor (VDR) gene polymorphism, additional gene-gene interaction, and haplotype combination with systemic lupus erythematosus (SLE) risk. Pairwise linkage disequilibrium (LD) analysis was conducted using SNPstats. The association between four SNPs within VDR gene and SLE risk was investigated by logistic regression. Generalized multifactor dimensionality reduction (GMDR) was used to analyze the interaction among four SNPs. Four SNPs within VDR gene were selected for genotyping in this study, including rs2228570, rs1544410, rs7975232, and rs731236...
March 11, 2017: Immunologic Research
https://www.readbyqxmd.com/read/28282804/ifnar1-expression-level-in-iranian-multiple-sclerosis-patients-treated-with-ifn-b
#10
Arezou Sayad, Mohsen Khakzad Kelarijani, Elham Sajjadi, Mohammad Taheri
BACKGROUND: Multiple sclerosis (MS) as an auto-immune disease is an inflammatory, demyelinating disease of the central nervous system. Certain genes have shown to be involved in the initiation of MS but the specific role of some of them, e.g. IFNAR1 has not been identified in certain populations yet. OBJECTIVE: The IFNAR1 as a type I membrane protein shapes one of the two chains of a receptor for interferons alpha and beta. METHODS: To find out how IFNAR1 functions in the Iranian population, the researchers compared the expression level of this gene in relapsing-remitting MS (RR-MS) samples with normal individuals...
March 3, 2017: Human Antibodies
https://www.readbyqxmd.com/read/28266114/interaction-of-lifestyle-behaviour-or-systemic-diseases-with-dental-caries-and-periodontal-diseases-consensus-report-of-group-2-of-the-joint-efp-orca-workshop-on-the-boundaries-between-caries-and-periodontal-diseases
#11
Iain L C Chapple, Philippe Bouchard, Maria Grazia Cagetti, Guglielmo Campus, Maria-Clotilde Carra, Fabio Cocco, Luigi Nibali, Philippe Hujoel, Marja L Laine, Peter Lingstrom, David J Manton, Eduardo Montero, Nigel Pitts, Hélène Rangé, Nadine Schlueter, Wim Teughels, Svante Twetman, Cor Van Loveren, Fridus Van der Weijden, Alexandre R Vieira, Andreas G Schulte
Periodontal diseases and dental caries are the most common diseases of humans and the main cause of tooth loss. Both diseases can lead to nutritional compromise and negative impacts upon self-esteem and quality of life. As complex chronic diseases, they share common risk factors, such as a requirement for a pathogenic plaque biofilm, yet they exhibit distinct pathophysiologies. Multiple exposures contribute to their causal pathways, and susceptibility involves risk factors that are inherited (e.g. genetic variants), and those that are acquired (e...
March 2017: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/28262768/chronic-alcohol-consumption-decreases-brown-adipose-tissue-mass-and-disrupts-thermoregulation-a-possible-role-for-altered-retinoid-signaling
#12
William S Blaner, Madeleine A Gao, Hongfeng Jiang, Timothy R A Dalmer, Xueyuan J Hu, Henry N Ginsberg, Robin D Clugston
Retinoic acid, an active metabolite of dietary vitamin A, acts as a ligand for nuclear receptor transcription factors with more than 500 known target genes. It is becoming increasingly clear that alcohol has a significant impact on cellular retinoic acid metabolism, with resultant effects on its function. Here, we test the hypothesis that chronic alcohol consumption impairs retinoic acid signaling in brown adipose tissue (BAT), leading to impaired BAT function and thermoregulation. All studies were conducted in age-matched, male mice consuming alcohol-containing liquid diets...
March 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28258612/vitamin-d-receptor-gene-polymorphisms-in-immune-thrombocytopenic-purpura
#13
Sule Yesil, Hikmet Gulsah Tanyildiz, Sibel Akpinar Tekgunduz, Sule Toprak, Ali Fettah, Asiye Ugras Dikmen, Gurses Sahin
BACKGROUND: Vitamin D receptor (VDR) gene polymorphisms have been studied in immune-mediated disorders, but not yet in immune thrombocytopenic purpura (ITP). We investigated whether VDR variants were associated with ITP in children. METHODS: The study included 44 children with a diagnosis of ITP and 100 healthy controls. Five VDR polymorphisms (Cdx-2, FokI, BsmI, ApaI and TaqI) were genotyped and used to evaluate the association of VDR variants with ITP. RESULTS: The distribution of the three Cdx-2 genotyping groups (GG, GA, and AA) was significantly different between ITP patients and controls (p=0...
March 4, 2017: Pediatrics International: Official Journal of the Japan Pediatric Society
https://www.readbyqxmd.com/read/28253304/bone-mineral-density-is-associated-with-vitamin-d-related-rs6013897-and-estrogen-receptor-polymorphism-rs4870044-the-troms%C3%A3-study
#14
Ieva Martinaityte, Rolf Jorde, Nina Emaus, Anne Elise Eggen, Ragnar Martin Joakimsen, Elena Kamycheva
BACKGROUND: Bone mineral density (BMD) is determined by bone remodeling processes regulated by endocrine, autocrine and genetic mechanisms. Thus, some studies have reported that BMD is associated with single nucleotide polymorphisms (SNPs) associated with vitamin D receptor (VDR), serum 25(OH)D levels and estrogen receptor 1 (ESR1), but without consensus. Therefore, we aimed to map and compare the risk genotypes for forearm and total hip low BMD. METHODS AND FINDINGS: Data were derived from a population-based study in northern Norway; the Tromsø Study...
2017: PloS One
https://www.readbyqxmd.com/read/28250190/activation-of-nrf2-antioxidant-signaling-by-1-25-dihydroxycholecalciferol-prevents-leptin-induced-oxidative-stress-and-inflammation-in-human-endothelial-cells
#15
Thaisa M Teixeira, Danielly C da Costa, Angela C Resende, Christophe O Soulage, Flavia F Bezerra, Julio B Daleprane
Background: Obesity is associated with hyperleptinemia and endothelial dysfunction. Hyperleptinemia has been reported to induce both oxidative stress and inflammation by increasing reactive oxygen species production.Objective: The objective of this study was to determine the effects of 1,25-dihydroxycholecalciferol [1,25(OH)2D3] against leptin-induced oxidative stress and inflammation in human endothelial cells.Methods: Small interfering RNA (siRNA) were used to knock down the expression of vitamin D receptor (VDR) in human umbilical vein endothelial cells (HUVECs)...
March 1, 2017: Journal of Nutrition
https://www.readbyqxmd.com/read/28249598/the-prognostic-utility-of-the-transcription-factor-srf-in-docetaxel-resistant-prostate-cancer-in-vitro-discovery-and-in-vivo-validation
#16
D J Lundon, A Boland, M Prencipe, G Hurley, A O'Neill, E Kay, S T Aherne, P Doolan, S F Madden, M Clynes, C Morrissey, J M Fitzpatrick, R W Watson
BACKGROUND: Docetaxel based therapy is one of the first line chemotherapeutic agents for the treatment of metastatic castrate-resistant prostate cancer. However, one of the major obstacles in the treatment of these patients is docetaxel-resistance. Defining the mechanisms of resistance so as to inform subsequent treatment options and combinations represents a challenge for clinicians and scientists. Previous work by our group has shown complex changes in pro and anti-apoptotic proteins in the development of resistance to docetaxel...
March 1, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28247721/-genetic-risk-factors-for-recurrence-free-urolithiasis-in-the-russian-population
#17
O I Apolikhin, A V Sivkov, O V Konstantinova, P A Slominsky, T V Tupitsyna, D N Kalinichenko
PURPOSE: Search for and identification of possible associations of recurrence-free urolithiasis with polymorphisms of urolithiasis candidate genes in the Russian population. MATERIALS AND METHODS: The study involved 43 patients with recurrence-free urolithiasis, 13 (30.2%) women and 30 (69.8%) of men (main group) from Central Russia, and 189 healthy adults (control group) from the same region. The mean age of the main group was 42.5+/-13 years. The venous blood samples were used for the evaluation...
August 2016: Urologii︠a︡
https://www.readbyqxmd.com/read/28243241/high-expression-of-antiviral-and-vitamin-d-pathway-genes-are-a-natural-characteristic-of-a-small-cohort-of-hiv-1-exposed-seronegative-individuals
#18
Wbeimar Aguilar-Jimenez, Irma Saulle, Daria Trabattoni, Francesca Vichi, Sergio Lo Caputo, Francesco Mazzotta, Maria T Rugeles, Mario Clerici, Mara Biasin
Natural resistance to HIV-1 infection is influenced by genetics, viral-exposure, and endogenous immunomodulators such as vitamin D (VitD), being a multifactorial phenomenon that characterizes HIV-1-exposed seronegative individuals (HESNs). We compared mRNA expression of 10 antivirals, 5 immunoregulators, and 3 VitD pathway genes by qRT-PCR in cells of a small cohort of 11 HESNs, 16 healthy-controls (HCs), and 11 seropositives (SPs) at baseline, in response to calcidiol (VitD precursor) and/or aldithriol-2-(AT2)-inactivated HIV-1...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28240603/the-vitamin-d-receptor-contemporary-genomic-approaches-reveal-new-basic-and-translational-insights
#19
J Wesley Pike, Mark B Meyer, Seong-Min Lee, Melda Onal, Nancy A Benkusky
The vitamin D receptor (VDR) is the single known regulatory mediator of hormonal 1,25-dihydroxyvitamin D3 [1,25(OH)2D3] in higher vertebrates. It acts in the nucleus of vitamin D target cells to regulate the expression of genes whose products control diverse, cell type-specific biological functions that include mineral homeostasis. In this Review we describe progress that has been made in defining new cellular sites of action of this receptor, the mechanisms through which this mediator controls the expression of genes, the biology that ensues, and the translational impact of this receptor on human health and disease...
February 27, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28228780/the-relationship-between-vitamin-d-receptor-vdr-polymorphism-and-the-occurrence-of-osteoporosis-in-menopausal-iranian-women
#20
Raheleh Dabirnia, Sanaz Mahmazi, Amirhossein Taromchi, Masoum Nikzad, Ehsan Saburi
BACKGROUND: Osteoporosis, a multifactorial disease with reduced bone mineral density which increases the probability of bone fractures, is caused by calcium deficiency, and its incidence increases with age. It has been determined that mutations in functional regions of vitamin D receptor gene will affect the metabolism of minerals especially calcium and, therefore, bone density. The present study evaluates the relation between vitamin D receptor polymorphisms, TaqI (rs731236) and ApaI (rs7975232), and osteoporosis in menopausal Azari women in Zanjan province...
September 2016: Clinical Cases in Mineral and Bone Metabolism
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