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Single nucleotide polymorphism and vitamins

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https://www.readbyqxmd.com/read/28424184/demographic-lifestyle-and-genetic-determinants-of-circulating-concentrations-of-25-hydroxyvitamin-d-and-vitamin-d-binding-protein-in-african-american-and-european-american-women
#1
Song Yao, Chi-Chen Hong, Elisa V Bandera, Qianqian Zhu, Song Liu, Ting-Yuan David Cheng, Gary Zirpoli, Stephen A Haddad, Kathryn L Lunetta, Edward A Ruiz-Narvaez, Susan E McCann, Melissa A Troester, Lynn Rosenberg, Julie R Palmer, Andrew F Olshan, Christine B Ambrosone
Background: Vitamin D may have anticancer activities. The high prevalence of vitamin D deficiency in African Americans (AAs) may be a contributing factor to the cancer health disparities between AAs and European Americans (EAs).Objectives: We compared concentrations of 25(OH)D and vitamin D-binding protein (VDBP) in AA and EA women and investigated determinants of the vitamin D-biomarker concentrations in both populations.Design: We used data and biospecimens from 909 AA and 847 EA healthy control subjects from the Carolina Breast Cancer Study (CBCS) and the Women's Circle of Health Study (WCHS) in the African American Breast Cancer Epidemiology and Risk Consortium...
April 19, 2017: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28423480/the-effect-of-high-dose-vitamin-d-supplementation-on-muscular-function-and-quality-of-life-in-postmenopausal-women-a-randomized-controlled-trial
#2
G Grimnes, N Emaus, K D Cashman, R Jorde
OBJECTIVE: Observational studies have suggested positive associations between serum 25-hydroxyvitamin D (25(OH)D) levels and muscular strength, balance and quality of life. Our aim was to examine whether high-dose vitamin D supplementation would improve these measures as compared to standard-dose vitamin D, as well as the possible muscular effects of Single Nucleotide Polymorphisms (SNPs) in genes encoding vitamin D-related enzymes. DESIGN: A 12-month randomized, double-blind, controlled trial where the participants received daily elemental calcium (1,000 mg) plus vitamin D3 (800 IU)...
April 19, 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/28407346/vitamin-d-receptor-gene-polymorphisms-in-serbian-patients-with-bronchial-asthma-a-case-control-study
#3
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/28399564/interactions-between-genome-wide-significant-genetic-variants-and-circulating-concentrations-of-25-hydroxyvitamin-d-in-relation-to-prostate-cancer-risk-in-the-national-cancer-institute-bpc3
#4
Vasiliki I Dimitrakopoulou, Ruth C Travis, Irene M Shui, Alison Mondul, Demetrius Albanes, Jarmo Virtamo, Antonio Agudo, Heiner Boeing, H Bas Bueno-de-Mesquita, Marc J Gunter, Mattias Johansson, Kay-Tee Khaw, Kim Overvad, Domenico Palli, Antonia Trichopoulou, Edward Giovannucci, David J Hunter, Sara Lindström, Walter Willett, J Michael Gaziano, Meir Stampfer, Christine Berg, Sonja I Berndt, Amanda Black, Robert N Hoover, Peter Kraft, Timothy J Key, Konstantinos K Tsilidis
Genome-wide association studies (GWAS) have identified over 100 single nucleotide polymorphisms (SNPs) associated with prostate cancer. However, information on the mechanistic basis for some associations is limited. Recent research has been directed towards the potential association of vitamin D concentrations and prostate cancer, but little is known about whether the aforementioned genetic associations are modified by vitamin D. We investigated the associations of 46 GWAS-identified SNPs, circulating concentrations of 25-hydroxyvitamin D (25(OH)D), and prostate cancer (3,811 cases, 511 of whom died from the disease, compared with 2,980 controls-from 5 cohort studies that recruited participants over several periods beginning in the 1980s)...
March 15, 2017: American Journal of Epidemiology
https://www.readbyqxmd.com/read/28388281/the-vitamin-d-receptor-functional-variant-rs2228570-c-t-does-not-associate-with-type-2-diabetes-mellitus
#5
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/28384983/association-study-of-vitamin-d-receptor-vdr-related-genetic-polymorphisms-and-their-haplotypes-with-chronic-periodontitis-in-colombian-population
#6
Sergio Iván Tobón-Arroyave, Diana María Isaza-Guzmán, Nicolás Pineda-Trujillo
INTRODUCTION: There is strong evidence that both genetic and environmental factors may affect the periodontal clinical status. However, epidemiological evidence on the association between Vitamin D Receptor (VDR) polymorphisms and Chronic Periodontitis (CP) has been inconsistent. AIM: The focus of this study was to identify if a possible association between VDR Single-Nucleotide Polymorphisms (SNPs) may be implicated in the aetiopathogenesis of CP in Colombian population...
February 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28384046/cross-validation-of-high-resolution-melting-analysis-based-genotyping-platform
#7
Taimour Langaee, Lynda Stauffer, Cheryl Galloway, Mohamed H Solayman, Larisa Cavallari
AIMS: Developing genetic and pharmacogenetic panels enhances genetic testing in clinical molecular diagnostics and precision medicine. This study was designed to cross-validate the performance of Canon's multiplex high-resolution DNA melting analysis platform with the Applied Biosystems TaqMan(®)-based Quant Studio Real-Time PCR System and Pyrosequencing(®) genotyping platforms for common genetic polymorphisms of the vitamin K epoxide reductase complex 1 (VKORC1) and CYP2C9. MATERIALS AND METHODS: Genomic DNA isolated from 240 blood and saliva samples was used to genotype the VKORC1-1639 G/A (rs9923231), CYP2C9*2 (430C>T, rs28371674), and CYP2C9*3 (1075A>C, rs1057910) single-nucleotide polymorphisms (SNPs) on the three above-mentioned genotyping platforms...
April 2017: Genetic Testing and Molecular Biomarkers
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
#8
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/28358908/pharmacogenomics-study-on-cadherin-2-network-with-regard-to-hiv-infection-and-methadone-treatment-outcome
#9
Hsiang-Wei Kuo, Chia-Lung Shih, Jieh-Hen Tsung, Sheng-Wen Liu, Shih-Kai Chu, Hsin-Chou Yang, Hsiao-Hui Tsou, Zih-Hsiang Wang, Andrew C H Chen, Yu-Li Liu
Heroin dependent patients have a high incidence of HIV infection. In contrast to the gene expression method, we developed a systemic correlation analysis method built upon the results of pharmacogenomics study in a methadone maintenance treatment (MMT) cohort consisting of 344 Taiwanese heroin dependent patients. We identified genetic variants and their encoding proteins that may be involved with HIV infection and MMT treatment outcome. Cadherin 2 (CDH2) genetic determinants were identified through the genome-wide pharmacogenomic study...
2017: PloS One
https://www.readbyqxmd.com/read/28344492/cyp2c9-cypc19-and-cyp2d6-gene-profiles-and-gene-susceptibility-to-drug-response-and-toxicity-in-turkish-population
#10
Merve Arici, Gül Özhan
Pharmacogenetics is a vast field covering drug discovery research, the genetic basis of pharmacokinetics and dynamics, genetic testing and clinical management in diseases. Pharmacogenetic approach usually focuses on variations of drug transporters, drug targets, drug metabolizing enzymes and other biomarker genes. Cytochrome P450 (CYP) enzymes, an essential source of variability in drug-response, play role in not only phase I-dependent metabolism of xenobiotics but also metabolism of endogenous compounds such as steroids, vitamins and fatty acids...
March 2017: Saudi Pharmaceutical Journal: SPJ: the Official Publication of the Saudi Pharmaceutical Society
https://www.readbyqxmd.com/read/28296915/genetic-variation-in-the-vitamin-d-pathway-cyp2r1-gene-predicts-sustained-hbeag-seroconversion-in-chronic-hepatitis-b-patients-treated-with-pegylated-interferon-a-multicenter-study
#11
Kessarin Thanapirom, Sirinporn Suksawatamnuay, Wattana Sukeepaisarnjareon, Tawesak Tanwandee, Phunchai Charatcharoenwitthaya, Satawat Thongsawat, Apinya Leerapun, Teerha Piratvisuth, Rattana Boonsirichan, Chalermrat Bunchorntavakul, Chaowalit Pattanasirigool, Bubpha Pornthisarn, Supot Tantipanichtheerakul, Ekawee Sripariwuth, Woramon Jeamsripong, Teeranan Sanpajit, Yong Poovorawan, Piyawat Komolmit
Evidence of a role of vitamin D in the immune system is increasing. Low serum vitamin D is associated with increased hepatitis B virus replication. Genome-wide association study (GWAS) data has revealed a number of the single nucleotide polymorphisms (SNPs) within the vitamin D synthetic pathway that affect vitamin D functions. We aimed to determine the association between SNPs in the vitamin D gene cascade and response to pegylated interferon (PegIFN) therapy in hepatitis B e-antigen (HBeAg)-positive patients...
2017: PloS One
https://www.readbyqxmd.com/read/28291736/association-of-vitamin-d-related-genetic-variations-and-treatment-response-to-pegylated-interferon-in-patients-with-chronic-hepatitis-b
#12
Umaporn Limothai, Natthaya Chuaypen, Apichaya Khlaiphuengsin, Salyavit Chittmittraprap, Yong Poovorawan, Pisit Tangkijvanich
BACKGROUND: Vitamin D, a potent immune-modulator, has been linked to the pathogenesis of chronic hepatitis B (CHB). This study was aimed at investigating the association between single nucleotide polymorphisms (SNPs) in vitamin D-related genes and treatment response to pegylated interferon (PEG-IFN) in patients with CHB. METHODS: A total 275 Thai patients (122 HBeAg-positive and 153 HBeAg-negative CHB) treated with 48-week PEG-IFN were recruited. Virological response (VR) at 48 weeks post treatment was defined as HBeAg seroconversion plus HBV DNA <2,000 IU/mL for HBeAg-positive CHB and HBV DNA <2,000 IU/mL for HBeAg-negative CHB...
March 14, 2017: Antiviral Therapy
https://www.readbyqxmd.com/read/28282870/genetic-variations-associated-with-vitamin-a-status-and-vitamin-a-bioavailability
#13
REVIEW
Patrick Borel, Charles Desmarchelier
Blood concentration of vitamin A (VA), which is present as different molecules, i.e., mainly retinol and provitamin A carotenoids, plus retinyl esters in the postprandial period after a VA-containing meal, is affected by numerous factors: dietary VA intake, VA absorption efficiency, efficiency of provitamin A carotenoid conversion to VA, VA tissue uptake, etc. Most of these factors are in turn modulated by genetic variations in genes encoding proteins involved in VA metabolism. Genome-wide association studies (GWAS) and candidate gene association studies have identified single nucleotide polymorphisms (SNPs) associated with blood concentrations of retinol and β-carotene, as well as with β-carotene bioavailability...
March 8, 2017: Nutrients
https://www.readbyqxmd.com/read/28278285/genetic-variant-in-vitamin-d-binding-protein-is-associated-with-metabolic-syndrome-and-lower-25-hydroxyvitamin-d-levels-in-polycystic-ovary-syndrome-a-cross-sectional-study
#14
Betânia Rodrigues Santos, Sheila Bünecker Lecke, Poli Mara Spritzer
Vitamin D deficiency has been related to metabolic syndrome (MetS) in polycystic ovary syndrome (PCOS). The vitamin D-binding protein (DBP) is the main protein involved in vitamin D transport. Two single-nucleotide polymorphisms (SNPs) of the DBP gene, rs4588 and rs7041, have been associated with low circulating levels of 25-hydroxyvitamin D [25(OH)D] in various populations, but not in women with PCOS. Therefore, we determined the genotype and haplotype distribution of DBP gene polymorphisms and investigated the associations between these genetic variants and their haplotypes with PCOS, MetS, and 25(OH)D levels in women with PCOS and controls from the South of Brazil...
2017: PloS One
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
#15
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/28241988/effects-of-maternal-genetic-polymorphisms-in-vitamin-d-binding-protein-and-serum-25-hydroxyvitamin-d-concentration-on-infant-birth-weight
#16
Soo-Kyung Chun, Sangah Shin, Moon Young Kim, Hyojee Joung, Jayong Chung
OBJECTIVE: Vitamin D deficiency is a common problem during pregnancy and might contribute to adverse birth outcomes. Vitamin D-binding protein plays a key role in regulating vitamin D metabolism. We investigated whether maternal genetic variation in GC, the gene encoding vitamin-D binding protein, modulates the relationship between 25-hydroxyvitamin D [25(OH)D] levels and infant birth weight. METHODS: We measured 25(OH)D concentrations in maternal and umbilical cord blood from 356 pregnant women and their infants by liquid chromatography tandem mass spectrometry...
March 2017: Nutrition
https://www.readbyqxmd.com/read/28223907/comparative-bioavailability-and-utilization-of-particular-forms-of-b12-supplements-with-potential-to-mitigate-b12-related-genetic-polymorphisms
#17
REVIEW
Cristiana Paul, David M Brady
CONTEXT: Three natural forms of vitamin B12 are commercially available: methylcobalamin (MeCbl), adenosylcobalamin (AdCbl), and hydroxycobalamin (OHCbl), all of which have been shown in clinical studies to improve vitamin B12 status. They are bioidentical to the B12 forms occurring in human physiology and animal foods. In contrast, cyanocobalamin (CNCbl), a synthetic B12 compound used for food fortification and in some supplements, occurs only in trace amounts in human tissues as a result of cyanide intake from smoking or other sources...
February 2017: Integrative Medicine
https://www.readbyqxmd.com/read/28220389/polymorphisms-in-key-bone-modulator-cytokines-genes-influence-bisphosphonates-therapy-in-postmenopausal-women
#18
C A D Lima, N R Javorski, A P O Souza, A D Barbosa, A P M C Valença, S Crovella, P R E Souza, J De Azevedo Silva, P Sandrin-Garcia
Osteoporosis is a multifactorial and debilitating disease resulting from decreased bone mineral density (BMD) and loss of tissue microarchitecture. Ineffective therapies may lead to bone fractures and subsequent death. Single nucleotide polymorphisms (SNPs) in key immune regulator genes have been associated with therapeutic response to bisphosphonates, which are the first therapeutic line of choice for osteoporosis. However, cytokine pathways and their relation with therapeutic adhesion remain to be fully elucidated...
February 21, 2017: Inflammopharmacology
https://www.readbyqxmd.com/read/28218743/vitamin-d-signaling-and-melanoma-role-of-vitamin-d-and-its-receptors-in-melanoma-progression-and-management
#19
REVIEW
Andrzej T Slominski, Anna A Brożyna, Michal A Zmijewski, Wojciech Jóźwicki, Anton M Jetten, Rebecca S Mason, Robert C Tuckey, Craig A Elmets
Ultraviolet B (UVB), in addition to having carcinogenic activity, is required for the production of vitamin D3 (D3) in the skin which supplies >90% of the body's requirement. Vitamin D is activated through hydroxylation by 25-hydroxylases (CYP2R1 or CYP27A1) and 1α-hydroxylase (CYP27B1) to produce 1,25(OH)2D3, or through the action of CYP11A1 to produce mono-di- and trihydroxy-D3 products that can be further modified by CYP27B1, CYP27A1, and CYP24A1. The active forms of D3, in addition to regulating calcium metabolism, exert pleiotropic activities, which include anticarcinogenic and anti-melanoma effects in experimental models, with photoprotection against UVB-induced damage...
February 20, 2017: Laboratory Investigation; a Journal of Technical Methods and Pathology
https://www.readbyqxmd.com/read/28216333/vitamin-d-receptor-gene-polymorphisms-smoking-and-risk-of-sporadic-parkinson-s-disease-in-japan
#20
Keiko Tanaka, Yoshihiro Miyake, Wakaba Fukushima, Chikako Kiyohara, Satoshi Sasaki, Yoshio Tsuboi, Tomoko Oeda, Hiroyuki Shimada, Nobutoshi Kawamura, Nobutaka Sakae, Hidenao Fukuyama, Yoshio Hirota, Masaki Nagai, Yoshikazu Nakamura
Epidemiological evidence on the relationships between the vitamin D receptor (VDR) single nucleotide polymorphisms (SNPs) rs731236 (TaqI), rs7975232 (ApaI), rs1544410 (BsmI), and rs2228570 (FokI) and Parkinson's disease (PD) is inconsistent. We investigated these relationships in 229 sporadic PD patients within six years of onset in Japan. Controls were 357 patients without neurodegenerative disease. Adjustment was made for sex, age, region of residence, and smoking. A significant inverse association was found between SNP rs2228570 and the risk of sporadic PD under the additive but not the co-dominant or dominant model (P=0...
March 16, 2017: Neuroscience Letters
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