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25(OH)D

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https://www.readbyqxmd.com/read/28328529/evaluation-of-vitamin-d-prophylaxis-in-3-36-month-old-infants-and-children
#1
Alper Ozcan, Mustafa Kendirci, Meda Kondolot, Fatih Kardas, Leyla Akın
BACKGROUND: Vitamin D (VD) deficiency (VDD) is still a population-based health problem that affects people at different ages. The aim of this study was to evaluate VD prophylaxis for the prevention of VDD in (3-36)-month-old infants and children. METHODS: Infants and children aged between 3 and 36 months, with different etiologies, admitted to outpatient and inpatient clinics from October 2010 to October 2011 at the Children's Hospital of Erciyes University, were enrolled for the study...
March 22, 2017: Journal of Pediatric Endocrinology & Metabolism: JPEM
https://www.readbyqxmd.com/read/28328526/impact-of-a-single-oral-dose-of-100-000-iu-vitamin-d3-on-profiles-of-serum-25-oh-d3-and-its-metabolites-24-25-oh-2d3-3-epi-25-oh-d3-and-1-25-oh-2d3-in-adults-with-vitamin-d-insufficiency
#2
Lanja Saleh, Jonathan Tang, Joanna Gawinecka, Lukas Boesch, William D Fraser, Arnold von Eckardstein, Albina Nowak
BACKGROUND: We investigate the effect of a high dose of vitamin D3 on circulating concentrations of 25(OH)D3 and its metabolites 24,25(OH)2D3, 3-epi-25(OH)D3, and 1,25(OH)2D3 in healthy individuals with self-perceived fatigue and vitamin D insufficiency [25(OH)D3<50 nmol/L]. METHODS: One hundred and seven study participants (age 20-50 years) were randomized to receive a single 100,000 IU dose of vitamin D3 (n=52) or placebo (n=55). Vitamin D metabolite concentrations in serum were measured before, and 4 weeks after, supplementation...
March 22, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/28327908/predicted-vitamin-d-status-and-colon-cancer-recurrence-and-mortality-in-calgb-89803-alliance
#3
M A Fuchs, C Yuan, K Sato, D Niedzwiecki, X Ye, L B Saltz, R J Mayer, R B Mowat, R Whittom, A Hantel, A Benson, D Atienza, M Messino, H Kindler, A Venook, F Innocenti, R S Warren, M M Bertagnolli, S Ogino, E L Giovannucci, E Horvath, J A Meyerhardt, K Ng
Background: HASH(0x3e61e18) Observational studies suggest that higher levels of 25-hydroxyvitamin D 3 (25(OH)D) are associated with a reduced risk of colorectal cancer and improved survival of colorectal cancer patients. However, the influence of vitamin D status on cancer recurrence and survival of patients with stage III colon cancer is unknown. Patients and methods: HASH(0x3a07748) We prospectively examined the influence of post-diagnosis predicted plasma 25(OH)D on outcome among 1,016 patients with stage III colon cancer who were enrolled in a National Cancer Institute-sponsored adjuvant therapy trial (CALGB 89803)...
March 15, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/28327512/prevalence-and-determinants-of-suboptimal-vitamin-d-levels-in-a-multiethnic-asian-population
#4
Ryan Eyn Kidd Man, Ling-Jun Li, Ching-Yu Cheng, Tien Yin Wong, Ecosse Lamoureux, Charumathi Sabanayagam
This population-based cross-sectional study examined the prevalence and risk factors of suboptimal vitamin D levels (assessed using circulating 25-hydroxycholecalciferol (25(OH)D)) in a multi-ethnic sample of Asian adults. Plasma 25(OH)D concentration of 1139 Chinese, Malay and Indians (40-80 years) were stratified into normal (≥30 ng/mL), and suboptimal (including insufficiency and deficiency, <30 ng/mL) based on the 2011 Endocrine Society Clinical Practice Guidelines. Logistic regression models were used to assess the associations of demographic, lifestyle and clinical risk factors with the outcome...
March 22, 2017: Nutrients
https://www.readbyqxmd.com/read/28326354/vitamin-d-status-in-children-over-three-decades-do-children-get-enough-vitamin-d
#5
Björn Andersson, Diana Swolin-Eide, Per Magnusson, Kerstin Albertsson-Wikland
Vitamin D is a key player in the endocrine regulation of calcium and phosphate metabolism and plays a pivotal role in the acquisition of bone mass during childhood. This study investigated long-term data of vitamin D levels in children and adolescents between 1 and 18 years of age. Serum 25-hydroxyvitamin D (25(OH)D) was analyzed between 1982 and 2013 in 2048 Swedish Caucasian children (mean age ± SD, 8.59 ± 3.68 years; 1197 boys). Overall, 704 (34%) children had below recommended levels of 50 nmol/L; however, only 63 (3%) had levels below 25 nmol/L, i...
December 2016: Bone Reports
https://www.readbyqxmd.com/read/28326301/association-of-serum-25-hydroxy-vitamin-d-concentration-and-arterial-stiffness-among-korean-adults-in-single-center
#6
Jung Hae Lee, Heuy Sun Suh
BACKGROUND: There are growing concerns about the role of vitamin D deficiency in cardiovascular diseases. Therefore, we investigated the correlation between serum 25-hydroxy-vitamin D (25[OH]D) and arterial stiffness among Korean adults. METHODS: We retrospectively reviewed the medical charts of 302 people (115 women and 187 men) who visited a tertiary hospital from January 2015 to December 2016. Serum 25(OH)D was measured using the radioimmunoassay technique, and brachial-ankle pulse wave velocity (baPWV) was measured using an automatic wave analyzer...
February 2017: Journal of Bone Metabolism
https://www.readbyqxmd.com/read/28325259/vitamin-d-analogues-potential-use-in-cancer-treatment
#7
REVIEW
Michael J Duffy, Alyson Murray, Naoise C Synnott, Norma O'Donovan, John Crown
The vitamin D receptor (VDR) is a member of the thyroid-steroid family of nuclear transcription factors. Following binding of the active form of vitamin D, i.e., 1,25(OH)2D3 (also known as calcitriol) and interaction with co-activators and co-repressors, VDR regulates the expression of several different genes. Although relatively little work has been carried out on VDR in human cancers, several epidemiological studies suggest that low circulating levels of vitamin D are associated with both an increased risk of developing specific cancer types and poor outcome in patients with specific diagnosed cancers...
April 2017: Critical Reviews in Oncology/hematology
https://www.readbyqxmd.com/read/28324861/behavioral-improvements-in-a-valproic-acid-rat-model-of-autism-following-vitamin-d-supplementation
#8
Lin Du, Guolian Zhao, Zipeng Duan, Fan Li
The aim was to identify the effects of early vitamin D supplementation on autism-like behaviors (ASD) induced by valproic acid (VPA, an anti-convulsant and a mood stabilizer) in rats. 10 male Wistar rat pups with prenatal exposure to saline were in control group, and 20 Pups with prenatal exposure to VPA were divided into ASD-N (0.9% saline treated) and ASD-D group (vitamin D 80,000 IU/kg treated) on postnatal day 12. Self-grooming, olfactory habituation/dishabituation, and social interaction tests were conducted to assess social interaction, communication, and repetitive behaviors...
March 6, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28323928/physical-activity-vitamin-d-and-incident-atherosclerotic-cardiovascular-disease-in-whites-and-blacks-the-aric-study
#9
Kathleen Chin, Di Zhao, Martin Tibuakuu, Seth S Martin, Chiadi E Ndumele, Roberta Florido, B Gwen Windham, Eliseo Guallar, Pamela L Lutsey, Erin D Michos
Context: Physical activity (PA) is associated with 25-hydroxyvitamin D [25(OH)D] levels. Both are associated with atherosclerotic cardiovascular disease (ASCVD), but their joint association with ASCVD risk is unknown. Objective: To examine the dose-response between PA and 25(OH)D, and to assess effect modification of 25(OH)D and PA with ASCVD risk. Design: Cross-sectional and prospective study using Poisson and linear regression. Setting: Community-dwelling Atherosclerosis Risk in Communities cohort...
February 17, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28323043/high-dose-vitamin-d-may-improve-lower-urinary-tract-symptoms-in-postmenopausal-women
#10
Johanna Oberg, Margareta Verelst, Rolf Jorde, Kevin Cashman, Guri Grimnes
Lower urinary tract symptoms (LUTS) are common in postmenopausal women, and have been reported inversely associated with vitamin D intake and serum 25-hydroxyvitamin D (25(OH)D levels. The aim of this study was to investigate if high dose vitamin D supplementation would affect LUTS in comparison to standard dose. In a randomized controlled study including 297 postmenopausal women with low bone mineral density, the participants were allocated to receive capsules of 20 000 IU of vitamin D3 twice a week (high dose group) or similar looking placebo (standard dose group)...
March 17, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28321505/cost-effective-measures-to-standardize-serum-25-oh-d-values-from-completed-studies
#11
EDITORIAL
C T Sempos, R A Durazo-Arvizu, G D Carter
No abstract text is available yet for this article.
March 20, 2017: Osteoporosis International
https://www.readbyqxmd.com/read/28320120/seasonal-variations-of-25-oh-vitamin-d-serum-levels-are-associated-with-clinical-disease-activity-in-multiple-sclerosis-patients
#12
Christina Hartl, Viola Obermeier, Lisa Ann Gerdes, Mathias Brügel, Rüdiger von Kries, Tania Kümpfel
Low 25-hydroxy vitamin D (25-[OH]-D) serum concentrations have been associated with higher disease activity in multiple sclerosis (MS) patients. In a large cross-sectional study we assessed the vitamin D status in MS patients in relation to seasonality and relapse rate. 415 MS-patients (355 relapsing-remitting MS and 60 secondary-progressive, 282 female, mean age 39.1years) of whom 25-(OH)-D serum concentrations were determined at visits between 2010 and 2013 were included in the study. All clinical data including relapse at visit and expanded disability status scale were recorded in a standardized manner by an experienced neurologist...
April 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28318372/white-blood-cell-counts-insulin-resistance-vitamin-d-levels-and-sarcopenia-in-korean-elderly-men
#13
Sang-Hwan Kim, Hyun Seok Kwon, Hee-Jin Hwang
Sarcopenia is a major determinant of frailty, disability and mortality in the elderly. Whether low-grade inflammation, insulin resistance and vitamin D are independently associated with sarcopenia remains unclear. In our study, sarcopenia was defined as an appendicular skeletal muscle mass divided by height squared (ASM/Ht(2)) that was <2 SD below the normal means for young adults. Insulin resistance was estimated using the homeostasis model assessment of insulin resistance (HOMA-IR) index [(insulin (IU/mL) × fasting glucose (mg/dL)/18)/22...
May 2017: Scandinavian Journal of Clinical and Laboratory Investigation
https://www.readbyqxmd.com/read/28318329/intact-parathyroid-hormone-levels-and-primary-hyperparathyroidism
#14
Haidar Al-Hraishawi, Peter J Dellatore, Xinjiang Cai, Xiangbing Wang
OBJECTIVE: The aim of this article is to compare clinical characteristics and lab values for metabolic syndrome between primary hyperparathyroidism (PHPT) patients with different levels of serum intact parathyroid hormone (iPTH) and to determine correlation between different clinical characteristics among PHPT patients Methods: We reviewed charts of 212 PHPT patients in this retrospective study. Patients were divided into two groups according to their initial serum iPTH levels. Student's t-tests were used to compare the two groups for differences in clinical characteristics and laboratory values...
March 20, 2017: Endocrine Research
https://www.readbyqxmd.com/read/28318299/lithocholic-acid-a-new-emergent-protector-of-intestinal-calcium-absorption-under-oxidant-conditions
#15
Ana M Marchionatti, Adriana Pérez, María A Rivoira, Valeria A Rodríguez, Nori G Tolosa de Talamoni
LCA and 1,25(OH)2D3 are vitamin D receptor ligands with different binding affinity. The secosteroid stimulates intestinal Ca(2+) absorption. Whether LCA alters this process remains unknown. The aim of our work was to determine the effect of LCA on intestinal Ca(2+) absorption in the absence or presence of NaDOC, bile acid that inhibits the cation transport. The data show that LCA by itself did not alter intestinal Ca(2+) absorption, but prevented the inhibitory effect of NaDOC. The concomitant administration of LCA avoided the reduction of intestinal alkaline phosphatase activity caused by NaDOC...
March 20, 2017: Biochemistry and Cell Biology, Biochimie et Biologie Cellulaire
https://www.readbyqxmd.com/read/28315864/vitamin-d-status-gender-differences-and-cardiometabolic-health-disparities
#16
Dharambir K Sanghera, Bishwa R Sapkota, Christopher E Aston, Piers R Blackett
BACKGROUND: Vitamin D deficiency is an unrecognized epidemic found in India and also worldwide. Despite the high prevalence of diabetes among Indians, there is a paucity of data showing the relationship between vitamin D status and cardiometabolic disparities. In this study, we have examined the relationship between vitamin D and cardiometabolic traits in a population from India. METHODS: Circulating 25(OH)D levels were measured in 3,879 participants from the Asian Indian Diabetic Heart Study using ELISA kits...
March 18, 2017: Annals of Nutrition & Metabolism
https://www.readbyqxmd.com/read/28315849/environmental-and-genetic-determinants-of-two-vitamin-d-metabolites-in-healthy-australian-children
#17
Abdulhadi Bima, Angela Pezic, Cong Sun, Fergus J Cameron, Christine Rodda, Ingrid van der Mei, Rachel Chiaroni-Clarke, Terence Dwyer, Andrew Kemp, Jun Qu, John Carlin, Justine A Ellis, Anne-Louise Ponsonby
BACKGROUND: Vitamin D deficiency has been associated with adverse health outcomes. We examined genetic and environmental determinants of serum 25(OH)D3 and 1,25(OH)2D3 in childhood. METHODS: The study sample consisted of 322 healthy Australian children (predominantly Caucasians) who provided a venous blood sample. A parental interview was conducted and skin phototype and anthropometry measures were assessed. Concentrations of 25(OH)D3 and 1,25(OH)2D3 were measured by selective solid-phase extraction-capillary liquid chromatography-tandem mass spectrometry...
March 20, 2017: Journal of Pediatric Endocrinology & Metabolism: JPEM
https://www.readbyqxmd.com/read/28315703/molecular-endocrinology-of-vitamin-d-on-the-epigenome-level
#18
REVIEW
Carsten Carlberg
The molecular endocrinology of vitamin D is based on the facts that i) its metabolite 1α,25-dihydroxyvitamin D3 (1,25(OH)2D3) is the high affinity ligand of the nuclear receptor vitamin D receptor (VDR) and ii) the transcription factor VDR is the unique target of 1,25(OH)2D3 in the nucleus. Short-term alterations of the epigenome are primarily changes in the post-translational modification status of nucleosome-forming histone proteins, the consequences of which are i) a local increase or decrease in chromatin accessibility and ii) the activation or repression of gene transcription...
March 16, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28315391/quality-assessment-of-vitamin-d-metabolite-assays-used-by-clinical-and-research-laboratories
#19
G D Carter, J Berry, R Durazo-Arvizu, E Gunter, G Jones, J Jones, H L J Makin, P Pattni, K W Phinney, C T Sempos, E L Williams
The Vitamin D External Quality Assessment Scheme (DEQAS) was launched in 1989 and monitors the performance of 25-hydroxyvitamin D (25-OHD) and 1,25- dihydroxyvitamin D (1,25(OH)2D) assays. In April 2015 a pilot scheme for 24,25-dihydroxyvitamin D (24,25(OH)2D) was introduced. The 25-OHD scheme is accuracy - based with target values assigned by the NIST Reference Measurement Procedure (RMP) for 25-OHD2 and 25-OHD3. A similar method is used to assign values for 3-epi-25-OHD. Five samples of human serum are distributed quarterly to over 1000 participants in 58 countries (April 2016) and clinical laboratories are expected to submit results within approximately 5 weeks...
March 14, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28306725/maternal-vitamin-d-insufficiency-and-risk-of-adverse-pregnancy-and-birth-outcomes-a-systematic-review-and-meta-analysis-of-longitudinal-studies
#20
A Kofi Amegah, Moses K Klevor, Carol L Wagner
BACKGROUND: Three previous reviews on the association of vitamin D insufficiency in pregnancy with preterm birth (PTB) and stillbirth were limited in scope and deemed inconclusive. With important new evidence accumulating, there is the need to update the previous estimates and assess evidence on other clinically important outcomes such as spontaneous abortion and Apgar score. We conducted a systematic review and meta-analysis to evaluate the quality and strength of the available evidence on the relations between vitamin D nutritional status, and pregnancy and birth outcomes...
2017: PloS One
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