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Cholecalciferol

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https://www.readbyqxmd.com/read/27893751/25-hydroxy-and-1%C3%AE-25-dihydroxycholecalciferol-have-greater-potencies-than-25-hydroxy-and-1%C3%AE-25-dihydroxyergocalciferol-in-modulating-cultured-human-and-mouse-osteoblast-activities
#1
Allahdad Zarei, Philippa A Hulley, Afsie Sabokbar, M Kassim Javaid, Alireza Morovat
Despite differences in the phamacokinetics of 25-hydroxycholecalciferol (25(OH)D3) and 25-hydroxyergocalciferol (25(OH)D2) in man, the effects of these and their 1α-hydroxylated forms (1,25(OH)2D3 and 1,25(OH)2D2) on cellular activity of vitamin D-responsive cells have hardly been compared. We studied differences in the effects of these metabolites on cell number, gene transcription, protein expression and mineralisation of cultured human bone marrow-derived stromal cells (hBMSC) and rapidly mineralising mouse 2T3 osteoblasts...
2016: PloS One
https://www.readbyqxmd.com/read/27889723/vitamin-d-supplementation-for-treatment-and-prevention-of-pneumonia-in-under-five-children-a-randomized-double-blind-placebo-controlled-trial
#2
Piyush Gupta, Pooja Dewan, Dheeraj Shah, Nisha Sharma, Nidhi Bedi, Iqbal R Kaur, Ajay Kumar Bansal, S V Madhu
OBJECTIVE: To evaluate the efficacy of single oral mega-dose of Vitamin D3 for treatment and prevention of pneumonia in under-five children. DESIGN: Randomized, double blind, placebo-controlled trial. SETTING: Tertiary-care hospital. PARTICIPANTS: 324 children (of 980 assessed) between 6 mo-5 y age (median (IQR): 12 (7,19.8) mo) with WHO-defined severe pneumonia. Of these, 126 (39%) were vitamin D deficient (serum 25(OH)D <12 ng/mL)...
November 15, 2016: Indian Pediatrics
https://www.readbyqxmd.com/read/27881592/the-c-3%C3%AE-epimer-of-25-hydroxycholecalciferol-from-endogenous-and-exogenous-sources-supports-normal-growth-and-bone-mineral-density-in-weanling-rats
#3
Marija Djekic-Ivankovic, Paula Lavery, Sherry Agellon, Hope A Weiler
BACKGROUND: The C-3α epimer of 25-hydroxycholecalciferol [3-epi-25(OH)D3] is elevated in infants. OBJECTIVES: We tested whether increasing cholecalciferol intake results in a dose-response in plasma 3-epi-25(OH)D3 We also examined bone and mineral metabolism in response to 3-epi-25(OH)D3 treatment. METHODS: Sprague Dawley rats (4 wk old) were randomly assigned (n = 6/group of each sex) to AIN-93G diets with cholecalciferol at 1 (control), 2, or 4 IU/g diet for objective 1 and to diets with 3-epi-25(OH)D3 at 0...
November 23, 2016: Journal of Nutrition
https://www.readbyqxmd.com/read/27863206/assessment-of-3-epi-25-hydroxyvitamin-d-levels-during-cholecalciferol-supplementation-in-adults-with-chronic-liver-diseases
#4
Caroline S Stokes, Dietrich A Volmer
Recently, hepatic immaturity was cited as a possible reason for high levels of the C-3 epimer of 25-hydroxyvitamin (25(OH)D) in premature infants: however what role, if any, the liver plays in controlling epimer concentrations is unknown. This study assesses 3-epi-25-hydroxyvitamin D (3-epi-25(OH)D) levels during the course of cholecalciferol supplementation in adults with chronic liver diseases (CLD). Vitamin D metabolites were analyzed in 65 CLD patients with 25(OH)D <30 ng/mL who received 20 000 IU cholecalciferol/week for 6 months...
December 2016: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/27862054/determination-of-target-fat-soluble-micronutrients-in-rainbow-trout-s-muscle-and-liver-tissues-by-liquid-chromatography-with-diode-array-tandem-mass-spectrometry-detection
#5
Virginia Pérez Fernández, Salvatore Ventura, Pierpaolo Tomai, Roberta Curini, Alessandra Gentili
This paper describes an analytical approach, based on liquid chromatography-diode array detection-tandem mass spectrometry (LC-DAD-MS/MS), for characterizing the fat-soluble micronutrient fraction in rainbow trout (Oncorhynchus mykiss). Two different procedures were applied to isolate the analytes from liver and muscle tissue: overnight cold saponification to hydrolyze bound forms and to simplify the analysis; matrix solid phase dispersion (MSPD) to avoid artifacts and to maintain unaltered the naturally occurring forms...
November 12, 2016: Electrophoresis
https://www.readbyqxmd.com/read/27861700/vitamin-d-and-physical-function-in-sedentary-older-men
#6
Silvina Levis, Orlando Gómez-Marín
OBJECTIVES: To determine the effectiveness of vitamin D supplementation in preventing decline in physical function in older men. DESIGN: Randomized, double-blind, placebo-controlled clinical trial. SETTING: Single-center study conducted at a Veterans Affairs Healthcare System. PARTICIPANTS: Sedentary men aged 65 to 90 (mean 72.4 ± 6.8) with baseline 25-hydroxyvitamin D (25(OH)D levels of less than 30 ng/mL and Short Physical Performance Battery (SPPB) test scores of 9 or less (N = 130)...
November 14, 2016: Journal of the American Geriatrics Society
https://www.readbyqxmd.com/read/27847201/different-effects-of-vitamin-d-hormone-treatment-on-depression-like-behavior-in-the-adult-ovariectomized-female-rats
#7
Julia Fedotova, Tatyana Dudnichenko, Peter Kruzliak, Zhanna Puchavskaya
Vitamine D (VD) has important functions in the human brain and may play a role in affective-related disorders. VD receptors are expressed in multiple brain regions associated with depressive disorders. The aim of the preclinical study was to examine the effects of chronic cholecalciferol administration (1.0, 2.5 or 5.0mg/kg/day,s.c., once daily, for 14days) on the depression-like behavior and corticosterone levels in the blood samples following ovariectomy in female rats. Cholecalciferol was administered to the ovariectomized (OVX) rats and OVX rats treated with 17β-estradiol (17β-E2, 0...
November 12, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27843377/pain-frequency-severity-and-qt-dispersion-in-adult-patients-with-sickle-cell-anemia-correlation-with-inflammatory-markers
#8
Taysir S Garadah, Ahmed A Jaradat, Mohammed E AlAlawi, Adla B Hassan, Reginald P Sequeira
BACKGROUND: Inflammatory markers are increased during vaso-occlusive crisis (VOC) in adult patients with sickle cell anemia (SCA), but this is not clear in clinical steady state. AIM: The present study aims to establish the frequency and intensity of bone pain episodes in adult patients with SCA in clinical steady state and to determine the correlation between different inflammatory markers, other variables including QT dispersion (QTd) and pain frequency and intensity in SCA...
2016: Journal of Blood Medicine
https://www.readbyqxmd.com/read/27837268/effect-of-high-dose-cholecalciferol-vitamin-d3-on-bone-and-body-composition-in-children-and-young-adults-with-hiv-infection-a-randomized-double-blind-placebo-controlled-trial
#9
A J Rovner, V A Stallings, R Rutstein, J I Schall, M B Leonard, B S Zemel
: It is unknown whether vitamin D supplementation positively impacts body composition and bone outcomes in children and young adults with HIV. This RCT found that despite increasing 25(OH)D concentrations, high dose vitamin D3 supplementation did not impact bone or body composition in children and young adults with HIV infection. INTRODUCTION: The objective of this paper was to determine the impact of high-dose daily cholecalciferol (vitamin D3) supplementation on body composition and bone density, structure, and strength in children and young adults with perinatally acquired (PHIV) or behaviorally acquired (BHIV) HIV infection...
November 11, 2016: Osteoporosis International
https://www.readbyqxmd.com/read/27832822/sarcoidosis-presenting-as-granulomatous-myositis-in-a-16-year-old-adolescent
#10
Amir B Orandi, Eric Eutsler, Cole Ferguson, Andrew J White, Maleewan Kitcharoensakkul
BACKGROUND: Sarcoidosis is a multi-system disease characterized by the presence of non-caseating epithelioid granulomas in affected tissues, including skeletal muscle. These organized collections of immune cells have important pathophysiologic action including cytokine production leading to inflammation as well as enzymatic conversion of cholecalciferol to calcitriol via 1-α hydroxylase. There are limited reports of isolated granulomatous myositis causing hypercalcemia in pediatric patients...
November 10, 2016: Pediatric Rheumatology Online Journal
https://www.readbyqxmd.com/read/27830384/comparison-of-the-effects-of-denosumab-between-a-native-vitamin-d-combination-and-an-active-vitamin-d-combination-in-patients-with-postmenopausal-osteoporosis
#11
Kosuke Ebina, Masafumi Kashii, Makoto Hirao, Jun Hashimoto, Takaaki Noguchi, Kota Koizumi, Kazuma Kitaguchi, Hozo Matsuoka, Toru Iwahashi, Yasunori Tsukamoto, Hideki Yoshikawa
The aim of this 12-month, retrospective study was to compare the effects of denosumab (DMAb; 60 mg subcutaneously every 6 months) plus native vitamin D (VD) (cholecalciferol) combination therapy with DMAb plus active VD analog (alfacalcidol) combination therapy in patients with postmenopausal osteoporosis. Patients [N = 127; mean age 75.6 years (range 58-93 years); 28 treatment-naïve patients, 59 patients treated with oral bisphosphonate therapy, 40 patients treated with teriparatide daily] were allocated to either (1) the DMAb plus native VD group (n = 60; cholecalciferol, 10 μg, plus calcium, 610 mg/day; 13 treatment-naïve patients, 28 patients treated with oral bisphosphonate therapy, and 19 patients treated with teriparatide daily) or (2) the DMAb plus active VD group [n = 67; alfacalcidol, 0...
November 9, 2016: Journal of Bone and Mineral Metabolism
https://www.readbyqxmd.com/read/27829825/matrix-metalloproteinase-mmp-9-levels-in-children-on-hemodialysis-association-with-mmp-9-c-1562-t-gene-polymorphism-and-vitamin-d-levels
#12
Ashraf Galal, Fatina I Fadel, Enas Mokhtar, Manal F Elshamaa, Eman A Elghoroury, Solaf Kamel, Gamila S M Elsaeed, Eman H Thabet
BACKGROUND AND OBJECTIVES: Data concerning the concentration of matrix metalloproteinase-9 (MMP-9) and its functional polymorphisms in chronic kidney diseases (CKD) are conflicting. The present study aimed to evaluate the levels of MMP-9in children with end stage renal diseases (ESRD) on hemodialysis (HD) and to explore its association with MMP-9 polymorphism and vitamin D levels as an important risk factors for cardiovascular diseases (CVD). METHODS: We studied 55 children with ESRD on hemodialysis and 18 healthy children served as controls...
September 2016: International Journal of Biomedical Science: IJBS
https://www.readbyqxmd.com/read/27827962/cholecalciferol-additively-reduces-serum-parathyroid-hormone-and-increases-vitamin-d-and-cathelicidin-levels-in-paricalcitol-treated-secondary-hyperparathyroid-hemodialysis-patients
#13
Jing-Quan Zheng, Yi-Chou Hou, Cai-Mei Zheng, Chien-Lin Lu, Wen-Chih Liu, Chia-Chao Wu, Ming-Te Huang, Yuh-Feng Lin, Kuo-Cheng Lu
BACKGROUND: Active Vitamin D analogues are used clinically for prevention and treatment of secondary hyperparathyroidism (SHPT) in hemodialysis (HD) patients. Nutritional vitamin D supplementation is used for additional local parathyroid (PTH) suppression, with lower incidence of hypercalcemia and hyperphosphatemia. This study evaluates the possible beneficial effects of combined vitamin D treatment (paricalcitol and cholecalciferol). METHODS: Sixty HD patients with serum parathyroid hormone (iPTH) >300 pg/mL were enrolled...
November 5, 2016: Nutrients
https://www.readbyqxmd.com/read/27813050/long-term-follow-up-and-treatment-of-postoperative-permanent-hypoparathyroidism-in-patients-with-medullary-thyroid-carcinoma-differences-in-complete-and-partial-disease
#14
G Leidig-Bruckner, T Bruckner, F Raue, K Frank-Raue
This study aimed to identify factors influencing long-term outcome in complete or partial postoperative hypoparathyroidism (parathyroid hormone ≤10 or >10 ng/l, respectively) in medullary thyroid carcinoma (MTC). It was designed as retrospective, long-term follow-up with single-center outpatient visits. Quality of treatment, renal calcification, and function were evaluated. In 33 patients with MTC and postoperative hypoparathyroidism, current medication includes: calcium (73%), calcitriol (73%), alfacalcidol (6%), dihydrotachysterol (3%), and cholecalciferol supplements (21%)...
December 2016: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/27810351/polymeric-nanospheres-for-topical-delivery-of-vitamin-d3
#15
Tannaz Ramezanli, Brian E Kilfoyle, Zheng Zhang, Bozena B Michniak-Kohn
This study investigates the potential application of polymeric nanospheres (known as TyroSpheres) as a formulation carrier for topical delivery of cholecalciferol (i.e., Vitamin D3, VD3) with the goal to improve the skin delivery and stability of VD3. High drug loading and binding efficiencies were obtained for VD3 when loaded in TyroSpheres. VD3 was released from TyroSpheres in a sustained manner and was delivered across the stratum corneum, which occurred independent of the initial drug loading. An ex vivo skin distribution study showed that TyroSphere formulations delivered 3-10μg of active into the epidermis which was significantly higher than that delivered from Transcutol(®) (the control vehicle)...
October 31, 2016: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/27803154/effect-of-vitamin-d-supplementation-on-health-status-in-non-vitamin-d-deficient-people-with-type-2-diabetes-mellitus
#16
S Westra, Y H M Krul-Poel, H J van Wijland, M M Ter Wee, F Stam, P Lips, F Pouwer, S Simsek
OBJECTIVE: Increased levels of depressive symptoms, fatigue or pain (all dimensions of reduced health-related quality of life (HRQOL)) are common in people with type 2 diabetes mellitus (DM). Earlier studies have reported associations between low vitamin D status and fatigue and depressive symptoms. The aim of the present study was to examine the effects of vitamin D supplementation on dimensions of HRQOL in people with type 2 DM. DESIGN: Randomised, double-blind, placebo-controlled trial...
November 2016: Endocrine Connections
https://www.readbyqxmd.com/read/27798339/a-combination-of-single-nucleotide-polymorphisms-is-associated-with-interindividual-variability-in-cholecalciferol-bioavailability-in-healthy-men
#17
Charles Desmarchelier, Patrick Borel, Aurélie Goncalves, Rachel Kopec, Marion Nowicki, Sophie Morange, Nathalie Lesavre, Henri Portugal, Emmanuelle Reboul
BACKGROUND: Most people require dietary vitamin D to achieve the recommended concentration of 25-hydroxyvitamin D [25(OH)D] in the blood. However, the response to vitamin D supplementation is highly variable among individuals. OBJECTIVE: We assessed whether the variability in cholecalciferol bioavailability was associated with single-nucleotide polymorphisms (SNPs) in candidate genes. METHODS: In a single-group design, 39 healthy adult men with a mean ± SD age of 33 ± 2 y and mean ± SD body mass index (in kg/m(2)) of 22...
October 26, 2016: Journal of Nutrition
https://www.readbyqxmd.com/read/27788053/determinants-of-the-maternal-25-hydroxyvitamin-d-response-to-vitamin-d-supplementation-during-pregnancy
#18
Rebecca J Moon, Nicholas C Harvey, Cyrus Cooper, Stefania D'Angelo, Sarah R Crozier, Hazel M Inskip, Inez Schoenmakers, Ann Prentice, Nigel K Arden, Nicholas J Bishop, Andrew Carr, Elaine M Dennison, Richard Eastell, Robert Fraser, Saurabh V Gandhi, Keith M Godfrey, Stephen Kennedy, M Zulf Mughal, Aris T Papageorghiou, David M Reid, Sian M Robinson, M Kassim Javaid
CONTEXT: Current approaches to antenatal vitamin D supplementation do not account for interindividual differences in 25-hydroxyvitamin D (25(OH)D) response. OBJECTIVE: We assessed which maternal and environmental characteristics were associated with 25(OH)D after supplementation with cholecalciferol. DESIGN: Within-randomization-group analysis of participants in the Maternal Vitamin D Osteoporosis Study trial of vitamin D supplementation in pregnancy...
October 27, 2016: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/27766277/phase-iia-randomized-placebo-controlled-trial-of-single-high-dose-cholecalciferol-vitamin-d3-and-daily-genistein-g-2535-versus-double-placebo-in-men-with-early-stage-prostate-cancer-undergoing-prostatectomy
#19
David Jarrard, Badrinath Konety, Wei Huang, Tracy Downs, Jill Kolesar, Kyung Mann Kim, Tom Havighurst, Joel Slaton, Margaret G House, Howard L Parnes, Howard H Bailey
INTRODUCTION AND OBJECTIVES: Prostate cancer (PCa) represents an important target for chemoprevention given its prolonged natural history and high prevalence. Epidemiologic and laboratory data suggest that vitamin D and genistein (soy isoflavone) may decrease PCa progression. The effect of vitamin D on prostate epithelial cell proliferation and differentiation is well documented and genistein may augment this affect through inhibition of the CYP24 enzyme, which is responsible for intracellular vitamin D metabolism...
2016: American Journal of Clinical and Experimental Urology
https://www.readbyqxmd.com/read/27765240/degradation-studies-of-cholecalciferol-vitamin-d3-using-hplc-dad-uhplc-ms-ms-and-chemical-derivatization
#20
Fatemeh Mahmoodani, Conrad O Perera, Bruno Fedrizzi, Grant Abernethy, Hong Chen
In any food fortification program, the stability of added micronutrients is an important factor. Cholecalciferol or vitamin D3 is known to isomerise under various conditions, thereby making its analysis challenging. In the current study, the effects of different parameters, such as temperature, iodine, acidic conditions, and oxidation, on the isomerisation of vitamin D3 were studied using HPLC-DAD and UHPLC-MS/MS. Vitamin D3 thermally and reversibly transforms to pre-vitamin D3 type isomers. In the presence of iodine, cis/trans isomerisation of both cholecalciferol and pre-vitamin D3 takes place to form trans-vitamin D3 and tachysterol, respectively...
March 15, 2017: Food Chemistry
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