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Vitamin D receptor

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https://www.readbyqxmd.com/read/29792782/25-hydroxyvitamin-d3-and-1-25-dihydroxyvitamin-d3-as-an-antiviral-and-immunomodulator-against-herpes-simplex-virus-1-infection-in-hela-cells
#1
Archit Kumar, Mini P Singh, Ragini S Kumar, Radha Kanta Ratho
The antiviral and immunomodulatory role of vitamin D has been shown in various viral infections. However, there is scanty literature available about the effect of vitamin D supplementation in herpes simplex virus-1 (HSV-1) infection. Therefore, the present study aimed to evaluate the role of two different forms of vitamin D: 25-hydroxyvitamin D3 (25D3) and 1,25-dihydroxyvitamin D3 (1,25D3) against HSV-1 in HeLa cells. The HeLa cells were supplemented with either 25D3 or 1,25D3 before HSV-1 infection and were studied after 6, 12, and 24 h postinfection (p...
May 24, 2018: Viral Immunology
https://www.readbyqxmd.com/read/29790402/vitamin-d-pathway-gene-polymorphisms-affecting-daclatasvir-plasma-concentration-at-2-weeks-and-1-month-of-therapy
#2
Jessica Cusato, Amedeo De Nicolò, Lucio Boglione, Fabio Favata, Alessandra Ariaudo, Simone Mornese Pinna, Chiara Carcieri, Federica Guido, Giuseppe Cariti, Giovanni Di Perri, Antonio D'Avolio
AIM: Vitamin D (VD) influences genetic expression through its receptor (VDR). VD pathway gene polymorphisms seem to influence antiviral drug pharmacokinetics and therapeutic outcome/toxicity. We investigated the association between daclatasvir (DCV) plasma concentrations and genetic variants (SNPs) associated with the VD pathway. PATIENTS & METHODS: Chronic hepatitis C patients treated with DCV from 2014 to 2016 were included. Genotypes were assessed through real-time PCR and plasma concentrations through liquid chromatography...
June 1, 2018: Pharmacogenomics
https://www.readbyqxmd.com/read/29788141/a-single-nucleotide-polymorphism-in-the-vitamin-d-receptor-gene-is-associated-with-decreased-levels-of-the-protein-and-a-penetrating-pattern-in-crohn-s-disease
#3
Laura Gisbert-Ferrándiz, Pedro Salvador, Dolores Ortiz-Masiá, Dulce Carolina Macías-Ceja, Samuel Orden, Juan Vicente Esplugues, Sara Calatayud, Joaquín Hinojosa, Maria Dolores Barrachina, Carlos Hernández
Background: Vitamin D signaling modulates inflammation through the vitamin D receptor (VDR). The synonymous single nucleotide polymorphism (SNP) rs731236, located in the VDR gene, has been associated with a higher risk of Crohn's disease (CD). We analyzed differences in VDR expression levels among CD patients who were homozygous for allelic variants in this SNP and their relevance for disease course. Methods: DNA was extracted from blood samples of CD patients, and SNP genotyping was performed by polymerase chain reaction-restriction fragment length polymorphism...
May 18, 2018: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/29787748/vitamin-d-receptor-is-required-for-proliferation-migration-and-differentiation-of-epidermal-stem-cells-and-progeny-during-cutaneous-wound-repair
#4
Yuko Oda, Lizhi Hu, Thai Nguyen, Chak Fong, Jing Zhang, Pan Guo, Daniel D Bikle
Epidermal stem cells residing in the skin play an essential role in epidermal regeneration. When skin is injured, the stem cells are first activated to proliferate, and subsequently the progeny migrate and differentiate to regenerate the epidermis. Here, we demonstrate that the vitamin D receptor (VDR) is essential for these processes to occur. The requirement for VDR on epidermal stem cell function was revealed in conditional VDR knockout (cKO) mice, in which VDR was deleted from stem cells and progeny, and mice were maintained on a low calcium diet...
May 19, 2018: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/29782293/mycosis-fungoides-and-vitamin-d-status-analyses-of-serum-25-hydroxyvitamin-d-levels-and-single-nucleotide-polymorphisms-in-the-vitamin-d-receptor-gene
#5
Pinar Incel Uysal, Nuran Alli, Yildiz Hayran, Tuba Candar
Various types of cancer, including melanoma and non-melanoma skin cancer, are associated with vitamin D receptor (VDR) polymorphisms. However, few studies have addressed VDR polymorphisms in patients with mycosis fungoides (MF), and previous studies have reported conflicting results. Aim of this case-control study was to assess the correlation between VDR single nucleotide polymorphisms (SNPs) Cdx2, Fok1, Apa1, Bsm1, and Taq1 and MF. Venous blood samples were collected from 41 patients with MF and 59 age- and sex-matched healthy controls...
April 2018: Acta Dermatovenerologica Croatica: ADC
https://www.readbyqxmd.com/read/29781719/serum-vitamin-d-status-and-breast-cancer-risk-by-receptor-status-a-systematic-review
#6
Jessica L Tommie, Susan M Pinney, Laurie A Nommsen-Rivers
BACKGROUND: The association between vitamin D status and breast cancer risk is equivocal. No systematic reviews or meta-analyses have examined this association stratified by receptor status. Our objective is to conduct a systematic review to answer the question, "Is there a relationship between lower serum/plasma vitamin D levels and increased risk of triple negative breast cancer (TNBC) specifically?" METHODS: We systematically searched Embase and PubMed databases for published original research studies examining the risk of a breast cancer diagnosis according to vitamin D status...
May 21, 2018: Nutrition and Cancer
https://www.readbyqxmd.com/read/29780383/human-metapneumovirus-infection-inhibits-cathelicidin-antimicrobial-peptide-expression-in-human-macrophages
#7
Youxian Li, Stine Østerhus, Ingvild B Johnsen
Human cathelicidin antimicriobial peptide (CAMP) is a critical component of host innate immunity with both antimicrobial and immunomodulatory functions. Several pathogens have been shown to downregulate CAMP expression, yet it is unclear if such modulation occurs during a viral infection. In this study, we showed that infection with human metapneumovirus (hMPV), one of the leading causes of respiratory tract infections in young children, strongly suppressed basal and vitamin-D induced CAMP expression in human macrophages...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29778131/vitamin-d-receptor-level-in-biopsy-specimen-of-patients-with-ulcerative-colitis-results-from-a-center-in-western-anatolia
#8
Adil Coskun, Irfan Yavasoglu, Ibrahim Meteoglu, Mustafa Unubol, Burak Yasar, Serkan Borazan, Imran Kurt Omurlu, Vahit Yukselen, M Hadi Yasa
BACKGROUND: Ulcerative colitis (UC) is a chronic, inflammatory bowel diseases characterized by uncontrolled inflammatory condition of the colon and rectal mucosa marked by recurrent periods of remission and exacerbation. Vitamin D receptor (VDR) is a member of the steroid receptor family that mediates the effects of vitamin D by regulating transcription of multiple cellular genes. We aimed to evaluate vitamin d receptor level in biopsy specimen of patients with UC in this study. METHODS: VDR levels were retrospectively studied in colon biopsy specimens of UC patients...
June 2018: Journal of the National Medical Association
https://www.readbyqxmd.com/read/29777458/increased-vitamin-d-receptor-gene-expression-and-rs11568820-and-rs4516035-promoter-polymorphisms-in-autistic-disorder
#9
Burhan Balta, Hakan Gumus, Ruslan Bayramov, Keziban Korkmaz Bayramov, Murat Erdogan, Didem Behice Oztop, Muhammet Ensar Dogan, Serpil Taheri, Munis Dundar
Although there are a large number of sequence variants of different genes and copy number variations at various loci identified in autistic disorder (AD) patients, the pathogenesis of AD has not been elucidated completely. Recently, in AD patients, a large number of expression array and transcriptome studies have shown an increase in the expression of genes especially related to innate immune response. Antimicrobial effects of vitamin D and VDR are exerted through Toll-Like-Receptors (TLR) which have an important role in the innate immune response, are expressed by antigen presenting cells and recognize foreign microorganisms...
May 18, 2018: Molecular Biology Reports
https://www.readbyqxmd.com/read/29775091/chronotherapy-of-maxacalcitol-on-skin-inflammation-induced-by-topical-12-o-tetradecanoylphorbol-13-acetate-in-mice
#10
Daisuke Yoshioka, Hitoshi Ando, Kentaro Ushijima, Masafumi Kumazaki, Akio Fujimura
In general, chronotherapy is desirable for a more effective and/or safe dosage regimen. In this study, a daily rhythm of skin vitamin D receptor (VDR) and chronotherapeutic profiles of maxacalcitol, a vitamin D analogue, were evaluated using mice with skin inflammation induced by topical 12-O-tetradecanoylphorbol-13-acetate (TPA). This study showed that skin nuclear VDR expression in TPA-treated mice has a daily rhythm with the peak at the middle of active period. The effects of maxacalcitol were greater after dosing during early to middle of active period than those after dosing during early to middle of inactive period...
May 18, 2018: Chronobiology International
https://www.readbyqxmd.com/read/29771914/regulation-of-vitamin-d-metabolizing-enzymes-in-murine-renal-and-extrarenal-tissues-by-dietary-phosphate-fgf23-and-1-25-oh-2d3
#11
Larissa Kägi, Carla Bettoni, Eva M Pastor-Arroyo, Udo Schnitzbauer, Nati Hernando, Carsten A Wagner
BACKGROUND: The 1,25-dihydroxyvitamin D3 (1,25(OH)2D3) together with parathyroid hormone (PTH) and fibroblast growth factor 23 (FGF23) regulates calcium (Ca2+) and phosphate (Pi) homeostasis, 1,25(OH)2D3 synthesis is mediated by hydroxylases of the cytochrome P450 (Cyp) family. Vitamin D is first modified in the liver by the 25-hydroxylases CYP2R1 and CYP27A1 and further activated in the kidney by the 1α-hydroxylase CYP27B1, while the renal 24-hydroxylase CYP24A1 catalyzes the first step of its inactivation...
2018: PloS One
https://www.readbyqxmd.com/read/29767854/emerging-association-between-parathyroid-hormone-and-anemia-in-hemodialysis-patients
#12
REVIEW
Motoko Tanaka, Hirotaka Komaba, Masafumi Fukagawa
Anemia is a common complication of chronic kidney disease (CKD). There are various causes of renal anemia such as decreased production of erythropoietin, resistance to erythropoietin, shortened survival of red blood cells, and bone marrow fibrosis. Secondary hyperparathyroidism (SHPT) is a less recognized, but potentially significant cause of renal anemia in CKD patients. Parathyroid hormone (PTH) has been regarded as a uremic toxin that has multiple adverse effects, and its elevated levels have been associated with renal anemia in hemodialysis patients...
May 16, 2018: Therapeutic Apheresis and Dialysis
https://www.readbyqxmd.com/read/29766002/influence-of-vitamin-d-receptor-gene-polymorphisms-on-response-to-pegylated-interferon-in-chronic-hepatitis-b-egyptian-patients
#13
Gomaa Mostafa-Hedeab, Dina Sabry, Ghada Mostafa Abdelaziz, Manal Ewaiss, Nagla Adli, Wael Fathy
Background: We explored the effect of vitamin D receptor gene ( VDR ) polymorphisms in response to PEG-IFN treatment in Egyptian chronic hepatitis B (CHB) patients. Methods: Two hundred hepatitis B virus (HBV) patients (42.3±10.7 years) on PEG-IFN α-2a (180 µg /kg for 48 weeks) and one hundred control subjects (37.3 ±12 years) were enrolled in the study. Vitamin D levels and hepatitis B surface antigen (HBsAg) expression were assessed by ELISA. VDR polymorphisms FokI T>C (rs 10735810), BsmI A>G (rs 1544410), ApaI (rs7975253), and TaqI C>T (rs 731236), were genotyped using real-time PCR...
April 2018: Reports of Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/29766000/vitamin-d3-induces-gene-expression-of-ox-ldl-scavenger-receptors-in-streptozotocin-induced-diabetic-rat-aortas-new-insight-into-the-role-of-vitamin-d-in-diabetic-atherosclerosis
#14
Shahab Alizadeh, Abbas Mirshafiey, Mahmoud Djalali, Ehsan Alvandi, Niyaz Mohammadzadeh Honarvar, Mohammad Hassan Javanbakht
Background: Several lines of evidence suggest that oxidized LDL (Ox-LDL) scavenger receptors play a crucial role in the genesis and progression of diabetic atherosclerosis. This study aimed to elucidate the effect of vitamin D3 on gene expression of lectin-like oxidized LDL receptor-1 (LOX-1), scavenger receptor-A (SR-A), Cluster of Differentiation 36 (CD36), and Cluster of Differentiation 68 (CD68) as the main Ox-LDL receptors in streptozotocin (STZ)-induced diabetic rat aortas. Methods: Eighteen Sprague-Dawley rats were randomly divided into three groups of six rats each...
April 2018: Reports of Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/29765404/meta-analysis-of-the-association-between-vitamin-d-receptor-polymorphisms-and-the-risk-of-autoimmune-thyroid-disease
#15
Xue-Ren Gao, Yong-Guo Yu
The association between vitamin D receptor ( VDR ) polymorphisms (rs731236, rs1544410, rs2228570, and rs7975232) and the risk of autoimmune thyroid disease (AITD) had been investigated in previous studies. However, the results of these studies remained controversial. Thus, a meta-analysis was performed to derive a more precise conclusion. All related articles were systematically searched by PubMed, Embase, Google Scholar, and Chinese National Knowledge Infrastructure (CNKI). The pooled odds ratios (ORs) with 95% confidence intervals (CIs) were calculated to assess the strength of association...
2018: International Journal of Endocrinology
https://www.readbyqxmd.com/read/29764626/25-hydroxvitamin-d-concentrations-are-not-lower-in-children-with-bronchial-asthma-atopic-dermatitis-obesity-or-attention-deficient-hyperactivity-disorder-than-in-healthy-children
#16
Thomas Reinehr, Christian Langrock, Eckard Hamelmann, Thomas Lücke, Cordula Koerner-Rettberg, Martin Holtmann, Tanja Legenbauer, Stephanie Gest, Mirjam Frank, Börge Schmidt, Katharina Radkowski, Karl-Heinz Jöckel
Vitamin D (vitD) is involved in immune regulation, and its receptor has been identified in several tissues including lung, adipose tissue, brain, and skin. Based on these observations, it has been suggested that vitD has an essential role not only in bone metabolism but also in other diseases such as atopic dermatitis (AD), bronchial asthma (BA), attention-deficit/hyperactivity disorder (ADHD), and obesity because the affected tissues express vitD receptors. Furthermore, obesity, AD, and BA are regarded as inflammatory diseases...
April 2018: Nutrition Research
https://www.readbyqxmd.com/read/29764315/effects-of-egg-consumption-and-choline-supplementation-on-plasma-choline-and-trimethylamine-n-oxide-in-a-young-population
#17
Bruno S Lemos, Isabel Medina-Vera, Olga V Malysheva, Marie A Caudill, Maria Luz Fernandez
BACKGROUND: Plasma trimethylamine-N-oxide (TMAO) concentrations have been associated with cardiovascular disease risk. Eggs are a rich source of choline, which is a precursor of TMAO. OBJECTIVE: The effects of egg intake versus daily choline supplementation were evaluated on plasma choline and TMAO in a young, healthy population. METHODS: Thirty participants (14 males, 16 females; 25.6 ± 2.3 years; body mass index = 24.3 ± 2.9 kg/m2 ) were enrolled in this 13-week crossover intervention...
May 15, 2018: Journal of the American College of Nutrition
https://www.readbyqxmd.com/read/29763933/the-calcium-sensing-receptor-gene-polymorphism-rs1801725-and-calcium-related-phenotypes-in-hemodialysis-patients
#18
Alicja E Grzegorzewska, Dariusz Bednarski, Monika Świderska, Adrianna Mostowska, Paweł P Jagodziński
BACKGROUND/AIMS: The calcium-sensing receptor gene (CASR) rs1801725 variant is responsible for a non-conservative amino-acid change (A986S) in the calcium-sensing receptor cytoplasmic tail. We hypothesized that rs1801725 polymorphism might be helpful in understanding Ca-related abnormalities in HD patients. METHODS: In 1215 subjects (245 on cinacalcet), we determined the associations of rs1801725 with secondary hyperparathyroidism (sHPT)-related laboratory parameters, PTH-decreasing effect of cinacalcet hydrochloride, coronary artery disease (CAD), myocardial infarction (MI), nephrolithiasis-related ESRD, and mortality...
May 10, 2018: Kidney & Blood Pressure Research
https://www.readbyqxmd.com/read/29762856/vitamin-d-a-steroid-hormone-with-progesterone-like-activity
#19
G Monastra, S De Grazia, L De Luca, S Vittorio, V Unfer
OBJECTIVE: This review is aimed at demonstrating the progesterone-like activity exerted by the active form of vitamin D, or calcitriol (1,25(OH)2D). To achieve this outcome, we compared the effects in vivo and in vitro exerted by progesterone and vitamin D, with a special focus on the female reproductive system and pregnancy. MATERIALS AND METHODS: This is a literature review of the most important articles published in English on vitamin D as a hormone, mainly found by MEDLINE...
April 2018: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29762475/growth-hormone-secretion-patterns-in-german-landrace-dl-fetuses-and-piglets-compared-to-dl-piglets-with-inherited-1-25-dihydroxyvitamin-d3-deficiency
#20
Manfred Mielenz, Michael W Pfaffl, Christina Schlumbohm, Johein Harmeyer, Nahid Parvizi
The regulation of growth hormone (GH) release during prenatal development and during early postnatal life is not entirely clarified. In this study plasma GH concentrations in pigs with inherited pseudo vitamin D deficiency type I (PDDR-I), which regularly show growth retardation, were compared during ontogeny with unaffected pigs of the same breed (German Landrace, DL) as control. Plasma GH concentrations were measured in plasma of chronically catheterized fetuses (beginning on day 101 after mating or after artificial insemination) and in piglets (day 37 postpartum (p...
May 15, 2018: Nutrients
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