keyword
MENU ▼
Read by QxMD icon Read
search

Vitamin-D

keyword
https://www.readbyqxmd.com/read/28433688/vitamin-d-downregulates-the-il-23-receptor-pathway-in-human-mucosal-ilc3
#1
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/28433569/vitamin-d-binding-protein-rs7041-polymorphism-and-high-residual-platelet-reactivity-in-patients-receiving-dual-antiplatelet-therapy-with-clopidogrel-or-ticagrelor
#2
Monica Verdoia, Veronica Daffara, Patrizia Pergolini, Roberta Rolla, Paolo Marino, Giorgio Bellomo, Alessandro Carriero, Giuseppe De Luca
BACKGROUND: Vitamin D deficiency represents a major health problem in general population, especially for its association with cardiovascular disorders and thrombotic risk, even in patients on dual antiplatelet therapy (DAPT). Vitamin D Binding Protein (VDBP) is the main transporter of vitamin D in the bloodstream and genetic polymorphisms of this protein have been shown to account for a significant variability of vitamin D levels and its systemic effects. Contrasting data have linked the rs7041 T→G substitution with cardiovascular disease...
April 19, 2017: Vascular Pharmacology
https://www.readbyqxmd.com/read/28433267/dose-response-effects-of-supplementation-with-calcifediol-on-serum-25-hydroxyvitamin-d-status-and-its-metabolites-a-randomized-controlled-trial-in-older-adults
#3
Anouk M M Vaes, Michael Tieland, Margot F de Regt, Jonas Wittwer, Luc J C van Loon, Lisette C P G M de Groot
BACKGROUND & AIMS: Oral supplementation with vitamin D is recommended for older adults to maintain a sufficient 25-hydroxyvitamin D (25(OH)D) status throughout the year. While supplementation with vitamin D2 or D3 is most common, alternative treatment regimens exist which require further investigation with respect to increasing 25(OH)D concentration. We investigated the dose-response effects of supplementation with calcifediol compared to vitamin D3 and assessed the dose which results in mean serum 25(OH)D3 concentrations between 75 and 100 nmol/L...
March 31, 2017: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/28433182/vitamin-d-fortified-chitosan-films-from-mushroom-waste
#4
Cristina Bilbao-Sainz, Bor-Sen Chiou, Tina Williams, Delilah Wood, Wen-Xian Du, Ivana Sedej, Zhaojun Ban, Victor Rodov, Elena Poverenov, Yakov Vinokur, Tara McHugh
Brown mushroom (Agaricus bisporus) stalk bases from mushroom waste were treated with UV-B light to rapidly increase vitamin D2 content. Chitin was also recovered from this waste and converted into chitosan by N-deacetylation. FTIR spectra showed that the mushroom chitosan were similar to chitosan from animal sources. Chitosan films were prepared using high molecular weight (HW), low molecular weight (LW) and fungal chitosan. UV-B treated mushroom particles were also incorporated into fungal chitosan films. The fungal chitosan films showed similar density, porosity and water vapor barrier properties to the LW and HW chitosan films...
July 1, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28432711/vdr-gene-methylation-as-a-molecular-adaption-to-light-exposure-historic-recent-and-genetic-influences
#5
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/28432394/-vitamin%C3%A2-d-and-uv-protection
#6
REVIEW
H Stege, T Schwarz
A high percentage of people present with reduced vitamin D3 levels. Reduced vitamin D3 levels have to be supplemented. Oral supplementation can be performed easily and without significant side effects. Because vitamin D3 can be produced in the skin via ultraviolet B (UVB) irradiation, it is possible to elevate reduced vitamin D3 levels by UVB exposure. However, UVB, which is classified as a complete carcinogen, induces skin cancer. Therefore, UVB irradiation should not be utilized to stimulate vitamin D3 synthesis...
April 21, 2017: Der Hautarzt; Zeitschrift Für Dermatologie, Venerologie, und Verwandte Gebiete
https://www.readbyqxmd.com/read/28431765/immune-modulation-by-vitamin-d-special-emphasis-on-its-role-in-prevention-and-treatment-of-cancer
#7
REVIEW
Franco Pandolfi, Laura Franza, Claudia Mandolini, Pio Conti
PURPOSE: Vitamin D has been known to be involved in mineral and bone homeostasis for many years. In the past its main use was in treating osteoporosis and rickets. In recent years it was found that vitamin D is an immune-modulating agent and may also have a role in several diseases, including autoimmune diseases. The immune-modulating effects appear to be mediated by vitamin D interaction with the vitamin D receptor (VDR) that has transcriptional effects and is expressed on various cell types, especially those of the immune system...
April 18, 2017: Clinical Therapeutics
https://www.readbyqxmd.com/read/28431446/-vitamin-d-in-clinic-and-practice
#8
Armin Zittermann, Stefan Pilz
Vitamin D is unique among the vitamins, since its major source is skin synthesis by solar UVB exposure, whereas dietary intake plays only a minor role. In the general population, cutaneous vitamin D synthesis is clearly below the recommended amount. Dietary vitamin D does not fill this gap. Severe vitamin D deficiency results in rickets in infants and osteomalacia in adults. In the absence of endogenous vitamin D synthesis (e. g. during winter), oral supplements should ensure adequate daily vitamin D intake, where appropriate...
April 2017: Deutsche Medizinische Wochenschrift
https://www.readbyqxmd.com/read/28430709/vitamin-d3-repressed-astrocyte-activation-following-lipopolysaccharide-stimulation-in-vitro-and-in-neonatal-rats
#9
Ke-Ping Jiao, Shao-Min Li, Wen-Yan Lv, Ming-Liang Jv, Hai-Yan He
Vitamin D3 has been reported to be an immunity modulator and high levels of vitamin D3 are correlated with a decreased risk for developing diseases in the central nervous system. Astrocytes are important immune cells and contribute toward inflammation during neurological diseases. The vitamin D receptor has been reported to be expressed in astrocytes; however, the effect of vitamin D3 on astrocyte activation has not been studied. Here, we found that lipopolysaccharide stimulation in astrocytes could enhance the expression of vitamin D receptor and Cyp27B1, which encodes the enzyme for converting vitamin D3 into its active form...
April 20, 2017: Neuroreport
https://www.readbyqxmd.com/read/28429909/association-between-maternal-vitamin-d-status-during-pregnancy-and-offspring-cognitive-function-during-childhood-and-adolescence
#10
Sargoor R Veena, Ghattu V Krishnaveni, Krishnamachari Srinivasan, Kotrangada P Thajna, Bhavya G Hegde, Catharine R Gale, Caroline Hd Fall
BACKGROUND AND OBJECTIVES: Animal studies have demonstrated poor cognitive outcomes in offspring in relation to maternal vitamin D deficiency before and/or during pregnancy. Human studies linking maternal vitamin D status during pregnancy with offspring cognitive function are limited. We aimed to test the hypothesis that lower maternal vitamin D status during pregnancy is associated with poor offspring cognitive ability in an Indian population. METHODS AND STUDY DESIGN: Cognitive function was assessed in children from the Mysore Parthenon birth cohort during childhood (age 9-10 years; n=468) and adolescence (age 13-14 years; n=472) using 3 core tests from the Kaufman Assessment Battery for children and additional tests measuring learning, long-term retrieval/ storage, short-term memory, reasoning, verbal fluency, visuo-spatial ability, and attention and concentration...
May 2017: Asia Pacific Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28429907/seasonal-vitamin-d-and-bone-metabolism-in-women-of-reproductive-age-in-urban-beijing
#11
Liying Yang, Wei Zhang
BACKGROUND AND OBJECTIVES: This study aimed to evaluate the relationship between serum 25-hydroxy-vitamin D and bone metabolism in healthy women of reproductive age. METHODS AND STUDY DESIGN: This study included 100 healthy female residents of Beijing (23-30 years old), who underwent bone ultrasonography as well as testing to evaluate serum25-hydroxy-vitamin D, parathyroid hormone, bone alkaline phosphatase, calcium, sodium, phosphorus, and alkaline phosphatase...
May 2017: Asia Pacific Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28429905/maintenance-vitamin-d3-dosage-requirements-in-chinese-women-with-post-menopausal-osteoporosis-living-in-the-tropics
#12
Yogeswari Venugopal, Sharifah F Wan Muhamad Hatta, Nurbazlin Musa, Siti Abdul Rahman, Jeyakantha Ratnasingam, Sharmila Sunita Paramasivam, Lee Ling Lim, Luqman Ibrahim, Karen Choong, Alexander Tb Tan, Karuthan Chinna, Siew Pheng Chan, Shireene R Vethakkan
BACKGROUND AND OBJECTIVES: Vitamin D3 (cholecalciferol) dose required to maintain sufficiency in non- Caucasian women with postmenopausal osteoporosis (PMO) inthe tropics has not been well studied. Some guidelines mandate 800-1000 IU vitamin D/day but the Endocrine Society (US) advocates 1500-2000 IU/day to maintain 25-hydroxyvitamin-D (25(OH)D) concentration at >75 nmol/L. We aimed to establish oral cholecalciferol dose required to maintain 25(OH)D concentration at >75 nmol/L in PMO Chinese Malaysian women, postulating lower dose requirements amongst light-skinned subjects in the tropics...
May 2017: Asia Pacific Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28429558/is-there-a-role-or-target-value-for-nutritional-vitamin-d-in-chronic-kidney-disease
#13
Wai H Lim, Emma L Duncan
Vitamin D is important for bone health in the general population but the value of vitamin D supplementation, and the role of 25-hydroxyvitamin D independently of 1,25-dihydroxyvitmain D, in individuals with chronic kidney disease (CKD), particularly in those who require dialysis, remains uncertain. Supplementation may improve some biochemical parameters, such as reducing PTH levels in patients to CKD-stage 4 who have vitamin D deficiency; but it remains to be established whether the role of nutritional vitamin D in maintaining bone health in the general population can be extrapolated to the CKD population...
March 2017: Nephrology
https://www.readbyqxmd.com/read/28429555/management-of-mineral-and-bone-disorders-in-renal-transplant-recipients
#14
Matthew J Damasiewicz, Peter R Ebeling
The management of post-transplantation bone disease is a complex problem that remains under-appreciated in clinical practice. In these patients, pre-existing metabolic bone disorder is further impacted by the use of immunosuppressive medications (glucocorticoids and calcineurin-inhibitors), variable post-transplantation renal allograft function and post-transplantation diabetes mellitus. The treatment of post-transplantation bone loss should begin pre-transplantation. All patients active on transplant waiting lists should be screened for bone disease...
March 2017: Nephrology
https://www.readbyqxmd.com/read/28429550/parathyroid-hormone-targets-in-chronic-kidney-disease-and-managing-severe-hyperparathyroidism
#15
Carmel M Hawley, Stephen G Holt
Appropriate targets for parathyroid hormone (PTH) in patients with chronic kidney disease (CKD) stages 3-5D are controversial, as are the means by which these targets might be achieved. Secondary hyperparathyroidism is linked to symptoms like bone pain and itch, in addition to less clinically overt issues like bone fragility as well as vascular and soft tissue calcification which may lead to adverse hard endpoints, particularly fracture and death. Recognized therapies for managing a rising PTH include vitamin D analogues, with or without calcimimetic (where available), in addition to management of serum mineral concentrations with diet, binders and dialysis...
March 2017: Nephrology
https://www.readbyqxmd.com/read/28429545/do-the-benefits-of-using-calcitriol-and-other-vitamin-d-receptor-activators-in-patients-with-chronic-kidney-disease-outweigh-the-harms
#16
Nigel D Toussaint, Matthew J Damasiewicz
The primary indication for administration of calcitriol or other vitamin D receptor activators (VDRA) in chronic kidney disease (CKD) is secondary hyperparathyroidism (SHPT). Prevention and treatment of SHPT appears important, as imbalances in mineral metabolism are associated with renal osteodystrophy, and higher parathyroid hormone (PTH) levels are associated with increased rates of mortality and morbidity in CKD patients. There is, however, a lack of controlled trial data that show lowering PTH with calcitriol/VDRA equates to improved clinical outcomes...
March 2017: Nephrology
https://www.readbyqxmd.com/read/28429367/can-type-1-diabetes-progression-be-halted-possible-role-of-high-dose-vitamin-d-and-omega-3-fatty-acids
#17
F Cadario, S Savastio, A M Rizzo, D Carrera, G Bona And C Ricordi
In Type 1 Diabetes (T1D) in children, close to the onset the requirements of insulin are often reduced. This represents a transient recovery of endogenous insulin secretion named "honeymoon" because transient and followed by a progressive decline in C-peptide secretion. This case report describes the effect of administration of high dose vitamin D and Ω-3 fatty acids on T1D progression in a 8-year-old child. At today after one year and a half from the onset of T1D, the subject shows a near-normal blood glucose with the administration of 1...
April 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28428487/association-between-serum-vitamin-d-and-all-cause-and-cause-specific-death-in-a-general-japanese-population%C3%A3-the-hisayama-study
#18
Kaoru Umehara, Naoko Mukai, Jun Hata, Yoichiro Hirakawa, Tomoyuki Ohara, Daigo Yoshida, Hiro Kishimoto, Takanari Kitazono, Sumio Hoka, Yutaka Kiyohara, Toshiharu Ninomiya
BACKGROUND: Few studies have investigated the association between serum vitamin D levels and mortality in general Asian populations.Methods and Results:We examined the association of serum 1,25-dihydroxyvitamin D (1,25(OH)2D) levels with the risk of all-cause and cause-specific death in an average 9.5-year follow-up study of 3,292 community-dwelling Japanese subjects aged ≥40 years (2002-2012). The multivariable-adjusted hazard ratio (HR) for all-cause death increased significantly with lower serum 1,25(OH)2D levels (HR 1...
April 20, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28428001/cholesterol-and-related-sterols-autoxidation
#19
REVIEW
Chiara Zerbinati, Luigi Iuliano
Cholesterol is a unique lipid molecule providing the building block for membranes, hormone, vitamin D and bile acid synthesis. Metabolism of cholesterol involves several enzymes acting on the sterol nucleus or the iso-octyl tail. In the recent years, research interest has been focused on oxysterols, cholesterol derivatives generated by the addition of oxygen to the cholesterol backbone. Oxysterols can be produced enzymatically or by autoxidation. Autoxidation of cholesterol proceeds through type I or type II mechanisms...
April 17, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28427988/obesity-bariatric-surgery-and-vitamin-d
#20
REVIEW
Joao Lindolfo C Borges, Isabella Santiago de M Miranda, Marta M S Sarquis, Victoria Borba, Sergio Setsuo Maeda, Marise Lazaretti-Castro, Neil Blinkey
The high prevalence of obesity is a worldwide problem associated with multiple comorbidities, including cardiovascular diseases. Vitamin D deficiency with secondary hyperparathyroidism is common in obese individuals and can be aggravated after bariatric surgery. Moreover, there is no consensus on the optimal supplementation dose of vitamin D in postbariatric surgical patients. We present new data on the variability of 25(OH)D response to supplementation in postmenopausal obese women. It is important to recognize and treat vitamin D deficiency before bariatric surgery to avoid postoperative complications, such as metabolic bone disease with associated high fracture risk...
April 17, 2017: Journal of Clinical Densitometry
keyword
keyword
44376
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"