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vitamin d dose

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https://www.readbyqxmd.com/read/28926829/continuous-subcutaneous-recombinant-parathyroid-hormone-1-34-infusion-in-the-management-of-childhood-hypoparathyroidism-associated-with-malabsorption
#1
Vrinda Saraff, Anya Rothenbuhler, Wolfgang Högler, Agnès Linglart
BACKGROUND/AIMS: Hypoparathyroidism associated with malabsorption can be particularly challenging to manage due to limited and erratic intestinal absorption of calcium and vitamin D analogues, resulting in episodes of hypo- or hypercalcaemia. We evaluated the role of continuous subcutaneous recombinant parathyroid hormone (rhPTH 1-34) infusion (CSPI) in children with hypoparathyroidism associated with intestinal malabsorption resistant to conventional therapy. METHOD: Four patients (8-13 years of age), with symptomatic hypocalcaemia resistant to conventional therapy, were started on CSPI (follow-up 3-8 years) in two paediatric endocrinology units in Europe...
September 19, 2017: Hormone Research in Pædiatrics
https://www.readbyqxmd.com/read/28926129/evaluation-of-the-new-restandardized-abbott-architect-25-oh-vitamin-d-assay-in-vitamin-d-insufficient-and-vitamin-d-supplemented-individuals
#2
Wijtske Annema, Albina Nowak, Arnold von Eckardstein, Lanja Saleh
BACKGROUND: Recently, Abbott Diagnostics has restandardized the Architect 25(OH)D assay against the NIST SRM 2972. We have evaluated the analytical and clinical performance of the restandardized Architect 25(OH)D assay and compared its performance with a NIST-traceable liquid chromatography-tandem mass spectrometry (LC-MS/MS) method and the Roche total 25(OH)D assay in vitamin D-insufficient individuals before and after vitamin D3 supplementation. METHODS: Frozen serum samples were obtained from 88 healthy subjects with self-perceived fatigue and vitamin D-insufficiency <50 nmol L(-1) who were randomized to receive a single 100 000 IU dose of vitamin D3 (n = 48) or placebo (n = 40)...
September 19, 2017: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/28922414/a-nonrandomized-trial-of-vitamin-d-supplementation-for-barrett-s-esophagus
#3
Linda C Cummings, Prashanthi N Thota, Joseph E Willis, Yanwen Chen, Gregory S Cooper, Nancy Furey, Beth Bednarchik, Bronia M Alashkar, John Dumot, Ashley L Faulx, Stephen P Fink, Adam M Kresak, Basel Abusneineh, Jill Barnholtz-Sloan, Patrick Leahy, Martina L Veigl, Amitabh Chak, Sanford D Markowitz
BACKGROUND: Vitamin D deficiency may increase esophageal cancer risk. Vitamin D affects genes regulating proliferation, apoptosis, and differentiation and induces the tumor suppressor 15-hydroxyprostaglandin dehydrogenase (PGDH) in other cancers. This nonrandomized interventional study assessed effects of vitamin D supplementation in Barrett's esophagus (BE). We hypothesized that vitamin D supplementation may have beneficial effects on gene expression including 15-PGDH in BE. METHODS: BE subjects with low grade or no dysplasia received vitamin D3 (cholecalciferol) 50,000 international units weekly plus a proton pump inhibitor for 12 weeks...
2017: PloS One
https://www.readbyqxmd.com/read/28921338/the-effect-of-high-dose-vitamin-d3-supplementation-on-bone-mineral-density-in-subjects-with-prediabetes
#4
A U Larsen, G Grimnes, R Jorde
The rationale of this study was to determine the effect of high-dose vitamin D3 supplementation on bone mineral density (BMD). Prediabetic males given vitamin D had significantly less reduction in BMD at the femoral neck compared to the controls. The clinical implications of our findings require further investigation. INTRODUCTION: Type 2 diabetes mellitus is associated with increased fracture risk, and recent studies show crosstalk between bone and glucose metabolism. Few studies have investigated the effect of vitamin D supplementation on the bone without additional calcium...
September 18, 2017: Osteoporosis International
https://www.readbyqxmd.com/read/28915134/vitamin-d-in-obesity
#5
Jennifer S Walsh, Simon Bowles, Amy L Evans
PURPOSE OF REVIEW: Vitamin D is essential for bone health, and may also have important functions in immunity and other systems. Vitamin D deficiency is common, and testing and supplementation is increasing. Serum vitamin D is lower in obese people; it is important to understand the mechanism of this effect and whether it indicates clinically significant deficiency. RECENT FINDINGS: Vitamin D is fat soluble, and distributed into fat, muscle, liver, and serum. All of these compartments are increased in volume in obesity, so the lower vitamin D likely reflects a volumetric dilution effect and whole body stores of vitamin D may be adequate...
September 14, 2017: Current Opinion in Endocrinology, Diabetes, and Obesity
https://www.readbyqxmd.com/read/28914773/vitamin-d-nutritional-status-and-its-related-factors-for-chinese-children-and-adolescents-in-2010-2012
#6
Yichun Hu, Jing Chen, Rui Wang, Min Li, Chunfeng Yun, Weidong Li, Yanhua Yang, Jianhua Piao, Xiaoguang Yang, Lichen Yang
Vitamin D plays a critical role in calcium and phosphate metabolism and helps maintain skeletal integrity in childhood, yet vitamin D status in Chinese children and adolescents is not well documented. The aim of this study was to assess the vitamin D status and analyze the risk factors for vitamin D deficiency in Chinese children and adolescents aged 6-17 years. Serum 25 hydroxyvitamin D (25(OH)D) was measured with a radioimmunoassay kit in 15,000 children and adolescent participants in the Chinese national nutrition and health survey (CNNHS) 2010-2012...
September 15, 2017: Nutrients
https://www.readbyqxmd.com/read/28913556/high-dose-vitamin-d3-supplementation-decreases-the-number-of-colonic-cd103-dendritic-cells-in-healthy-subjects
#7
Nina Friis Bak, M Bendix, S Hald, L Reinert, M K Magnusson, J Agnholt
PURPOSE: Vitamin D may induce tolerance in the intestinal immune system and has been shown to regulate the phenotype of tolerogenic intestinal dendritic cells (DCs) in vitro. It is unknown whether vitamin D supplementation affects human intestinal DCs in vivo, and we aimed to investigate the tolerability and effect on intestinal CD103(+)DCs of high-dose vitamin D3 treatment in healthy subjects. METHODS: Ten healthy subjects received a total of 480,000 IU oral vitamin D3 over 15 days and colonic biopsies were obtained before and after intervention by endoscopy...
September 14, 2017: European Journal of Nutrition
https://www.readbyqxmd.com/read/28912809/the-biphasic-effect-of-vitamin-d-on-the-musculoskeletal-and-cardiovascular-system
#8
REVIEW
Armin Zittermann
This narrative review summarizes beneficial and harmful vitamin D effects on the musculoskeletal and cardiovascular system. Special attention is paid to the dose-response relationship of vitamin D with clinical outcomes. In infants and adults, the risk of musculoskeletal diseases is highest at circulating 25-hydroxyvitamin D (25OHD) concentrations below 25 nmol/L and is low if 40-60 nmol/L are achieved. However, evidence is also accumulating that in elderly people the risk of falls and fractures increases again at circulating 25OHD levels > 100 nmol/L...
2017: International Journal of Endocrinology
https://www.readbyqxmd.com/read/28905271/pharmacokinetics-of-a-new-oral-vitamin-d-receptor-activator-2-methylene-19-nor-20s-1%C3%AE-25-dihydroxyvitamin-d3-in-patients-with-chronic-kidney-disease-and-secondary-hyperparathyroidism-on-hemodialysis
#9
Richa Pandey, Julia B Zella, Jinge G Zhu, Lori A Plum, Margaret Clagett-Dame, William J Blaser, Wendy Bedale, Hector F DeLuca, Daniel W Coyne
BACKGROUND: 2-Methylene-19-nor-(20S)-1α,25-dihydroxyvitamin D3 (DP001 or 2MD) is a novel, potent 1α-hydroxylated vitamin D analog that binds to the vitamin D receptor and suppresses parathyroid hormone synthesis and secretion with potential for an improved safety profile compared to existing active vitamin D analogs. The purpose of this study was to evaluate the pharmacokinetics of DP001 given orally after hemodialysis. METHODS: DP001 (550 ng) was given orally to 11 hemodialysis patients with secondary hyperparathyroidism after each dialysis session (3 times/week) for 4 weeks...
September 13, 2017: Drugs in R&D
https://www.readbyqxmd.com/read/28904494/vitamin-d-deficiency-does-not-influence-reproductive-outcomes-of-ivf-icsi-a-study-of-oocyte-donors-and-recipients
#10
Manish Banker, Dipesh Sorathiya, Sandeep Shah
BACKGROUND: Vitamin D and its active metabolite, 1,25-dihydroxy vitamin D (1,25-(OH)2D3), play a significant role in reproduction. AIM: To assess the effect of serum 25-hydroxy vitamin D level on oocyte quality and endometrial receptivity by studying oocyte donors and their recipients. MATERIALS AND METHODS: This prospective study consisted of two groups: Group A (recipient group) and Group B (donor group). All the participants of Groups A1 and B1 as well as Groups A2 and B2 were subcategorized into vitamin D-deficient (<20 ng/mL) and vitamin D replete-insufficient (20 to ≥30 ng/mL), respectively...
April 2017: Journal of Human Reproductive Sciences
https://www.readbyqxmd.com/read/28904010/vitamin-d-supplementation-to-palliative-cancer-patients-protocol-of-a-double-blind-randomised-controlled-trial-palliative-d
#11
Maria Helde-Frankling, Jenny Bergqvist, Caritha Klasson, Marie Nordström, Jonas Höijer, Peter Bergman, Linda Björkhem-Bergman
BACKGROUND: According to a small pilot study on palliative cancer patients at our ward, vitamin D supplementation had beneficial effects on pain (measured as opioid consumption), infections and quality of life (QoL) without having any significant side effects. OBJECTIVE: The primary objective of the 'Palliative-D' study is to test the hypothesis that vitamin D supplementation for 12 weeks reduces opioid consumption. The secondary objectives are to study if reduction of antibiotic consumption and fatigue as well as improvement in QoL assessments can be observed...
September 13, 2017: BMJ Supportive & Palliative Care
https://www.readbyqxmd.com/read/28902705/effects-of-vitamin-d-supplementation-on-bone-mineral-density-and-bone-markers-in-hiv-infected-youth
#12
Allison Ross Eckard, Mary Ann O'Riordan, Julia C Rosebush, Joshua H Ruff, Ann Chahroudi, Danielle Labbato, Julie E Daniels, Monika Uribe-Leitz, Vin Tangpricha, Grace A McComsey
BACKGROUND: Low bone mineral density (BMD) is a significant co-morbidity in HIV. However, studies evaluating vitamin D supplementation on bone health in this population are limited. This study investigates changes in bone health parameters after 12 months of supplementation in HIV-infected youth with vitamin D insufficiency. METHODS: This is a randomized, active-control, double-blind trial investigating changes in bone parameters with 3 different vitamin D3 doses [18,000 (standard/control dose), 60,000 (moderate dose) and 120,000 IU/monthly (high dose)] in HIV-infected youth 8-25 years old with baseline serum 25-hydroxyvitamin D (25(OH)D) concentrations <30 ng/mL...
September 11, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/28901695/vitamin-d-australian-dietitian-s-knowledge-and-practices
#13
Clare F Dix, Alex Robinson, Judith D Bauer, Olivia R L Wright
AIM: To survey dietitians on their knowledge and practices regarding vitamin D (VitD) intake, sources, supplementation and effect on disease state. METHODS: An online survey was disseminated to members of the Dietitian Association Australia via the weekly online state newsletter during April 2015. Response rate was 3%, with 134 respondents completing the survey. The survey included questions about knowledge and current practices. Descriptive statistics were used to analyse the results...
September 2017: Nutrition & Dietetics: the Journal of the Dietitians Association of Australia
https://www.readbyqxmd.com/read/28899715/the-relationship-between-25-hydroxyvitamin-d-concentration-and-liver-enzymes-in-overweight-or-obese-adults-cross-sectional-and-interventional-outcomes
#14
Negar Naderpoor, Aya Mousa, Maximilian de Courten, Robert Scragg, Barbora de Courten
Vitamin D deficiency is prevalent in individuals with non-alcoholic fatty liver disease (NAFLD) and non-alcoholic steatohepatitis. However, there is limited and inconsistent data on the effect of vitamin D supplementation on liver function. Hepatic enzymes have been used as surrogate markers for NAFLD and have been associated with metabolic syndrome. We examined the relationships between 25-hydroxyvitamin D (25(OH)D) and γ-glutamyl transferase (GGT), alanine aminotransferase (ALT), alkaline phosphatase (ALP) in 120 drug-naïve individuals with no history of liver disease...
September 9, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28893306/monitored-supplementation-of-vitamin-d-in-preterm-infants-mosvid-trial-study-protocol-for-a-randomised-controlled-trial
#15
Alicja Kołodziejczyk, Maria K Borszewska-Kornacka, Joanna Seliga-Siwecka
BACKGROUND: The pivotal role of vitamin D (vit D) in skeletal health is well known. Neonatal vit D storage at birth is dependent on maternal levels, and newborns receive 50-70% of their mother's 25-hydroxyvitamin D [25(OH)D]. Deficiency of vit D can lead to prematurity bone disease, with an incidence of up to 55% in infants weighing < 1000 g. The aim of this study is to assess the effectiveness of monitored supplementation of vit D in a population of preterm infants. METHODS/DESIGN: Preterm infants born at 24-32 weeks of gestation will be recruited within the first 7 days of life...
September 11, 2017: Trials
https://www.readbyqxmd.com/read/28891198/targeted-medical-nutrition-for-cachexia-in-chronic-obstructive-pulmonary-disease-a-randomized-controlled-trial
#16
Philip C Calder, Alessandro Laviano, Fredrik Lonnqvist, Maurizio Muscaritoli, Maria Öhlander, Annemie Schols
BACKGROUND: Cachectic patients with chronic obstructive pulmonary disease (COPD) may benefit from nutritional support. This double-blind, randomized, controlled trial evaluated the safety and efficacy of targeted medical nutrition (TMN) vs. an isocaloric comparator in pre-cachectic and cachectic patients with COPD. METHODS: Patients aged ≥50 years with moderate-to-severe COPD and involuntary weight loss or low body mass index (16-18 kg/m(2) ) were randomized 1:1 to receive TMN (~230 kcal; 2 g omega-3 fatty acids; 10 μg 25-hydroxy-vitamin D3) or isocaloric comparator twice daily for 12 weeks (ClinicalTrials...
September 10, 2017: Journal of Cachexia, Sarcopenia and Muscle
https://www.readbyqxmd.com/read/28886856/outcome-of-patients-receiving-thrombolytic-therapy-while-on-rivaroxaban-for-nonvalvular-atrial-fibrillation-from-rivaroxaban-once-daily-oral-direct-factor-xa-inhibition-compared-with-vitamin-k-antagonism-for-prevention-of-stroke-and-embolism-trial-in-atrial
#17
Sean T Chen, Anne S Hellkamp, Richard C Becker, Scott D Berkowitz, Günter Breithardt, Keith A A Fox, Werner Hacke, Jonathan L Halperin, Graeme J Hankey, Kenneth W Mahaffey, Christopher C Nessel, Jonathan P Piccini, Daniel E Singer, Manesh R Patel
The safety of intravenous thrombolysis in patients taking rivaroxaban has not been well established. We retrospectively analyzed the outcomes of all patients who received thrombolytic therapy in the Rivaroxaban Once Daily Oral Direct Factor Xa Inhibition Compared With Vitamin K Antagonism for Prevention of Stroke and Embolism Trial in Atrial Fibrillation (ROCKET AF). A review of medical and adverse event records for patients receiving thrombolytic therapy while enrolled in ROCKET AF was performed to determine their baseline characteristics, indications for thrombolysis, and type of agent used...
August 7, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28886484/augmentation-of-intracellular-iron-using-iron-sucrose-enhances-the-toxicity-of-pharmacological-ascorbate-in-colon-cancer-cells
#18
Kristin E Brandt, Kelly C Falls, Joshua D Schoenfeld, Samuel N Rodman, Zhimin Gu, Fenghuang Zhan, Joseph J Cullen, Brett A Wagner, Garry R Buettner, Bryan G Allen, Daniel J Berg, Douglas R Spitz, Melissa A Fath
Pharmacological doses (> 1mM) of ascorbate (a.k.a., vitamin C) have been shown to selectively kill cancer cells through a mechanism that is dependent on the generation of H2O2 at doses that are safely achievable in humans using intravenous administration. The process by which ascorbate oxidizes to form H2O2 is thought to be mediated catalytically by redox active metal ions such as iron (Fe). Because intravenous iron sucrose is often administered to colon cancer patients to help mitigate anemia, the current study assessed the ability of pharmacological ascorbate to kill colon cancer cells in the presence and absence of iron sucrose...
August 26, 2017: Redox Biology
https://www.readbyqxmd.com/read/28884317/relationship-of-very-low-serum-25-hydroxyvitamin-d3-levels-with-long-term-survival-in-a-large-cohort-of-colorectal-cancer-patients-from-germany
#19
Haifa Maalmi, Viola Walter, Lina Jansen, Jenny Chang-Claude, Robert W Owen, Alexis Ulrich, Ben Schöttker, Michael Hoffmeister, Hermann Brenner
To investigate the association of serum 25-hydroxyvitamin D (25(OH)D3) with survival in a large prospective cohort study of colorectal cancer (CRC) patients. The study population consisted of 2,910 patients diagnosed with CRC between 2003 and 2010 who participated in the DACHS study, a multicenter study from Germany with comprehensive long-term follow-up. 25(OH)D3 was determined in serum samples collected shortly after cancer diagnosis by High Performance Liquid Chromatography-Electro Spray Ionization-Mass Spectrometry...
September 7, 2017: European Journal of Epidemiology
https://www.readbyqxmd.com/read/28882133/is-a-motivational-interviewing-based-lifestyle-intervention-for-obese-pregnant-women-across-europe-implemented-as-planned-process-evaluation-of-the-dali-study
#20
Judith G M Jelsma, David Simmons, Nina Gobat, Stephen Rollnick, Kinga Blumska, Goele Jans, Sander Galjaard, Gernot Desoye, Rosa Corcoy, Fabiola Juarez, Alexandra Kautzky-Willer, Jürgen Harreiter, Andre van Assche, Roland Devlieger, Dirk Timmerman, David Hill, Peter Damm, Elisabeth R Mathiesen, Ewa Wender-Ożegowska, Agnieszka Zawiejska, Annunziata Lapolla, Maria G Dalfrà, Stefano Del Prato, Alessandra Bertolotto, Fidelma Dunne, Dorte M Jensen, Liselotte Andersen, Frank J Snoek, Mireille N M van Poppel
BACKGROUND: Process evaluation is an essential part of designing and assessing complex interventions. The vitamin D and lifestyle intervention study (DALI) study is testing different strategies to prevent development of gestational diabetes mellitus among European obese pregnant women with a body mass index ≥29 kg/m(2). The intervention includes guidance on physical activity and/or healthy eating by a lifestyle coach trained in motivational interviewing (MI). The aim of this study was to assess the process elements: reach, dose delivered, fidelity and satisfaction and to investigate whether these process elements were associated with changes in gestational weight gain (GWG)...
September 7, 2017: BMC Pregnancy and Childbirth
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