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25-hydroxyvitamin D

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https://www.readbyqxmd.com/read/29053944/investigation-of-the-3-epi-25-oh-d3-of-25-hydroxyvitamin-d3-in-urban-schoolchildren
#1
Samantha E Berger, Maria I Van Rompay, Catherine M Gordon, Elizabeth Goodman, Misha Eliasziw, Michael F Holick, Jennifer M Sacheck
BACKGROUND: The physiological relevance C-3 epimer of 25-hydroxyvitamin D [3-epi-25(OH)D] is not well understood among youth. OBJECTIVE: To assess whether demographic/physiologic characteristics were associated with 3-epi-25(OH)D3 concentrations in youth. METHODS: Associations between 3-epi-25(OH)D3 and demographics, 3-epi-25(OH)D3, total 25-hydroxyvitamin (25(OH)D) (25(OH)D2 + 25(OH)D3), total cholesterol, HDL, LDL and triglycerides were examined in racially/ethnically diverse schoolchildren (n=682, 8-15yrs) at Boston-area urban schools...
October 20, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/29050711/prevalence-of-vitamin-d-deficiency-in-pediatric-patients-with-scoliosis-preparing-for-spinal-surgery
#2
Theresa Mayes, Jennifer M Anadio, Peter F Sturm
BACKGROUND: Establishing prevalence of vitamin D deficiency in elective scoliosis surgery may impact clinical outcomes. The objectives of this study were to document vitamin D status of patients with scoliosis preparing for surgical intervention in order to establish frequency of deficiency and determine characteristics influencing levels. METHODS: Records were queried for patients with scoliosis diagnosis who underwent posterior spinal fusion or initial growing rod placement and had serum vitamin 25 hydroxyvitamin D (D25) recorded in the preoperative period...
November 2017: Spine Deformity
https://www.readbyqxmd.com/read/29046301/bone-mineral-density-during-pregnancy-in-women-participating-in-a-randomized-controlled-trial-of-vitamin-d-supplementation
#3
Wei Wei, Judith R Shary, Elizabeth Garrett-Mayer, Betsy Anderson, Nina E Forestieri, Bruce W Hollis, Carol L Wagner
Background: Little is known about bone mineral density (BMD) during pregnancy. Advances in technology with lower radiation emissions by dual-energy X-ray absorptiometry instruments now permit the safe measurement of BMD during pregnancy.Objective: We evaluated maternal BMD during pregnancy as a function of vitamin D status in women of diverse racial/ethnic backgrounds.Design: A total of 301 women who underwent BMD measurements at 12-20 wk of gestation and again at 0-14 wk postpartum were included in this analysis...
October 18, 2017: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/29046199/-association-between-serum-25-oh-d-levels-at-birth-and-bronchopulmonary-dysplasia-in-preterm-infants
#4
Ren-Qiang Yu, Dao-Zhen Chen, Qin Zhou, Min Wang, Ying-Zi Mei, Shan-Yu Jiang
OBJECTIVE: To assess the association between serum 25-hydroxyvitamin D [25(OH)D] levels at birth and bronchopulmonary dysplasia (BPD) in preterm infants. METHODS: This study recruited preterm infants with gestational age of below 34 weeks who were born between January 2014 and December 2016. These preterm infants were classified into two groups: BPD and control. The association between serum 25(OH)D levels at birth and BPD was analyzed. RESULTS: Serum 25(OH)D levels in the BPD group was significantly lower than those in the control group [(37±17 nmol/L vs 47±20 nmol/L; P<0...
October 2017: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
https://www.readbyqxmd.com/read/29044032/-the-relationship-between-serum-vitamin-d-levels-and-cardiovascular-risk-factors-among-icelandic-children
#5
Thorunn Hannesdottir, Hannes Hrafnkelsson, Erlingur Johannsson, Emil L Sigurdsson
OBJECTIVE: To determine the relationship between serum vitamin D levels and known cardiometabolic risk factors among healthy Icelandic children as well as study these connections independent of body mass index (BMI). METHODS: We assessed the relationship between serum 25-hydroxyvitamin D, adiposity measured as BMI and 7 cardiometabolic risk factors (high blood pressure, total cholesterol, high-density lipoprotein cholesterol, low-density lipoprotein cholesterol, triglycerides, blood glucose and serum insulin)...
September 2017: Læknablađiđ
https://www.readbyqxmd.com/read/29042866/effects-of-cord-blood-vitamin-d-levels-on-the-risk-of-neonatal-sepsis-in-premature-infants
#6
Birgul Say, Nurdan Uras, Suzan Sahin, Halil Degirmencioglu, Serife Suna Oguz, Fuat Emre Canpolat
PURPOSE: Vitamin D plays a key role in immune function. Vitamin D deficiency may play a role in the pathogenesis of infections, and low levels of circulating vitamin D are strongly associated with infectious diseases. In this study, we aimed to evaluate the effects of low vitamin D levels in cord blood on neonatal sepsis in preterm infants. METHODS: One hundred seventeen premature infants with gestational age of <37 weeks were enrolled. In the present study, severe vitamin D deficiency (group 1) was defined as a 25-hydroxyvitamin D (25(OH)D) concentration <5 ng/mL; vitamin D insufficiency (group 2), 25(OH)D concentration ≥5 ng/mL and <15 ng/mL; and vitamin D sufficiency (group 3), 25(OH)D concentration ≥15 ng/mL...
August 2017: Korean Journal of Pediatrics
https://www.readbyqxmd.com/read/29040128/single-dose-preoperative-vitamin-d-supplementation-decreases-infection-in-a-mouse-model-of-periprosthetic-joint-infection
#7
Vishal Hegde, Erik M Dworsky, Alexandra I Stavrakis, Amanda H Loftin, Stephen D Zoller, Howard Y Park, Sherif Richman, Daniel Johansen, Yan Hu, Julie A Taylor, Christopher D Hamad, Rene F Chun, Weixian Xi, John S Adams, Nicholas M Bernthal
BACKGROUND: Despite recent advances, infection remains the most common etiology of arthroplasty failure. Recent work suggests that 25-hydroxyvitamin D (25D) deficiency correlates with the frequency of periprosthetic joint infection (PJI). We endeavored to examine whether 25D3 deficiency leads to increased bacterial burden in vivo in an established mouse model of PJI and, if so, whether this effect can be reversed by preoperative 25D3 supplementation. METHODS: Mice (lys-EGFP) possessing fluorescent neutrophils were fed a vitamin D3-sufficient (n = 20) or deficient (n = 40) diet for 6 weeks...
October 18, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/29037174/vitamin-d-supplementation-as-a-potential-cause-of-u-shaped-associations-between-vitamin-d-levels-and-negative-health-outcomes-a-decision-tree-analysis-for-risk-of-frailty
#8
Gotaro Kojima, Steve Iliffe, Marianne Tanabe
BACKGROUND: A recent controversy in vitamin D research is a "U-shaped association", with elevated disease risks at both high and low 25-hydroxyvitamin D (25 (OH) D) levels. METHODS: This is a cross-sectional study of 238 male nursing home veterans in Hawaii. Classification and regression tree (CART) analysis identified groups based on 25 (OH) D and vitamin D supplementation for frailty risk. Characteristics were examined and compared across the groups using logistic regression and receiver operating characteristic (ROC) curve analyses...
October 16, 2017: BMC Geriatrics
https://www.readbyqxmd.com/read/29035877/association-of-maternal-serum-25-hydroxyvitamin-d-concentrations-with-risk-of-gestational-anemia
#9
Yingdi Yuan, Zhiyong Cai, YaoYao Dai, Qin Hong, Xingyun Wang, Lijun Zhu, Pengfei Xu, Lianghui You, Xing Wang, Chenbo Ji, Juan Wen, Xirong Guo
BACKGROUND/AIMS: Vitamin D deficiency has been shown to be associated with a greater prevalence of anemia in various healthy and diseased populations by a great deal of observational studies. However, less work has been done to explore this association in pregnant women. The aim of this study was to evaluate the association between maternal serum 25-hydroxyvitamin D [25(OH)D] concentrations and risk of gestational anemia in a large, nested case-control study. METHODS: The serum 25(OH)D concentrations was measured by enzyme immunoassay in 775 pregnant women affected with anemia and 1550 controls...
October 16, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29031688/vitamin-d-deficiency-is-associated-with-poor-breast-cancer-prognostic-features-in-postmenopausal-women
#10
Benedito de Sousa Almeida-Filho, Heloisa De Luca Vespoli, Eduardo Carvalho Pessoa, Murilo Machado, Jorge Nahas-Neto, Eliana Aguiar Petri Nahas
This study aimed to evaluate the association between pretreatment vitamin D (VD) deficiency with breast cancer prognostic features in Brazilian postmenopausal women. An analytical cross sectional study was conducted with 192 women, aged 45-75 years, attended at University Hospital. Women with recent diagnosis of breast cancer, in amenorrhea >12months and age ≥45 years, without medication use or clinical conditions that interfere with VD values were included. Clinical and anthropometric data were collected...
October 11, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/29030989/genetic-and-epigenetic-factors-influencing-vitamin-d-status
#11
REVIEW
Afsane Bahrami, Hamid Reza Sadeghnia, Seyed-Amir Tabatabaeizadeh, Hamidreza Bahrami-Taghanaki, Negin Behboodi, Habibollah Esmaeili, Gordon A Ferns, Majid Ghayour Mobarhan, Amir Avan
The global prevalence of vitamin D deficiency appears to be increasing, and the impact of this on human health is important because of the association of vitamin D insufficiency with increased risk of osteoporosis, cardiovascular disease and some cancers. There are few studies on the genetic factors that can influence vitamin D levels. In particular, the data from twin and family-based studies have reported that circulating vitamin D concentrations are partially determined by genetic factors. Moreover, it has been shown that genetic variants (e...
October 14, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29030560/risk-of-sarcopenia-and-osteoporosis-in-male-tuberculosis-survivors-korea-national-health-and-nutrition-examination-survey
#12
Chang-Jin Choi, Whan-Seok Choi, Churl-Min Kim, Sook-Young Lee, Kyung-Soo Kim
Short-term prospective studies have suggested that pulmonary tuberculosis (TB) preludes permanent loss of lean tissue and fat mass even when TB treatment is effective. The aim of this study was to estimate the risk of sarcopenia and osteoporosis among Korean male TB survivors. Data of the population-based, Korea National Health and Nutrition Examination Survey (KNHANES) (2008-2011) were analyzed, including 3,228 males aged 50 years or older who underwent chest X-ray (CXR) and dual-energy x-ray absorptiometry (DEXA)...
October 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29029469/genetic-and-environmental-factors-and-serum-hormones-and-risk-of-estrogen-receptor-positive-breast-cancer-in-pre-and-postmenopausal-japanese-women
#13
Jiazhi Guo, Aiko Sueta, Koshi Nakamura, Nobuyasu Yoshimoto, Motoi Baba, Naoko Ishida, Kanako Hagio, Tatsuya Toyama, Hirotaka Iwase, Akiko Tamakoshi, Hiroko Yamashita
Breast cancer incidence in Japanese women has more than tripled over the past two decades. We have previously shown that this marked increase is mostly due to an increase in the estrogen receptor (ER)-positive, HER2-negative subtype. We conducted a case-control study; ER-positive, HER2-negative breast cancer patients who were diagnosed since 2011 and women without disease were recruited. Environmental factors, serum levels of testosterone and 25-hydroxyvitamin D, and common genetic variants reported as predictors of ER-positive breast cancer or found in Asian women were evaluated between patients and controls in pre- and postmenopausal women...
September 12, 2017: Oncotarget
https://www.readbyqxmd.com/read/29029193/sex-and-iron-modify-fibroblast-growth-factor-23-fgf23-concentration-in-1-year-old-children
#14
Elisa Holmlund-Suila, Maria Enlund-Cerullo, Saara Valkama, Helena Hauta-Alus, Jenni Rosendahl, Otto Helve, Timo Hytinantti, Heli Viljakainen, Sture Andersson, Outi Mäkitie
Context: Fibroblast growth factor 23 (FGF23) plays an important role in phosphate homeostasis but its regulation is inadequately characterized. Objective: To examine regulators of FGF23, especially sex and iron status, in early childhood. Design: A cross-sectional study involving 1-year-old children. Setting and participants: Healthy term infants with a birth weight appropriate for gestational age were recruited to an ongoing vitamin D trial at the Kätilöopisto Maternity Hospital, Helsinki, Finland...
October 5, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29029099/biomarkers-of-mineral-and-bone-metabolism-and-20-year-risk-for-hospitalization-with-infection-the-aric-study
#15
Junichi Ishigami, Bernard G Jaar, Casey M Rebholz, Morgan E Grams, Erin D Michos, Myles Wolf, Csaba P Kovesdy, Shinichi Uchida, Josef Coresh, Pamela L Lutsey, Kunihiro Matsushita
Context: Mineral and bone disorders (MBD) may be relevant in the etiology of infection. Objective: To determine whether MBD biomarkers were associated with incidence of hospitalization with infection. We also assessed the cross-sectional association between levels of MBD biomarkers and kidney function. Design: Setting, Participants: Community-based cohort study using 11,218 participants with estimated glomerular filtration rate (eGFR) ≥30 ml/min/1...
September 27, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29029097/impact-of-three-doses-of-vitamin-d3-on-serum-25-oh-d-deficiency-and-insufficiency-in-at-risk-schoolchildren
#16
Jennifer M Sacheck, Maria I Van Rompay, Virginia R Chomitz, Christina D Economos, Misha Eliasziw, Elizabeth Goodman, Catherine M Gordon, Michael F Holick
Objective: We investigated the daily dose of vitamin D needed to achieve serum 25-hydroxyvitamin D [25(OH)D] sufficiency among schoolchildren at-risk for deficiency. Study Design: The Daily D Health Study was a randomized double-blind vitamin D supplementation trial among racially/ethnically diverse schoolchildren (n=685) in the northeastern U.S. Children were supplemented with vitamin D3 at 600, 1000, or 2000 IU/day for six months. Measurements included serum 25(OH)D at baseline (Oct-Dec), 3 months (Jan-March), 6 months (April-June), and 12 months (6 months post-supplementation)...
September 27, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29027946/serum-25-hydroxyvitamin-d-concentrations-and-indicators-of-mental-health-an-analysis-of-the-canadian-health-measures-survey
#17
Filmer Chu, Arto Ohinmaa, Scott Klarenbach, Zing-Wae Wong, Paul Veugelers
The main function of vitamin D is calcium homeostasis. However, emerging evidence has correlated adequate serum 25-hydroxyvitamin D (25(OH)D) concentrations with better mental health. The objective of this study is to investigate the association of serum 25(OH)D concentrations with indicators of mental health such as depression, anxiety, and stress. Associations of serum 25(OH)D concentrations with four indicators of mental health were examined using ordered logistic regression models with increasing specificity that account for demographics, socio-economic status, and health...
October 13, 2017: Nutrients
https://www.readbyqxmd.com/read/29026487/seasonal-variations-and-correlations-between-vitamin-d-and-total-testosterone-levels
#18
Moo-Yeol Sim, Soo-Hyun Kim, Kwang-Min Kim
BACKGROUND: Some studies have provided evidence for a possible association between vitamin D and testosterone levels; however, the evidence from studies in Koreans is inconsistent. In addition, insufficient evidence is available to support an association between seasonal variations in vitamin D and testosterone levels in Koreans. Therefore, we aimed to investigate the association between vitamin D and testosterone levels, and between seasonal variations in these levels in Korean men. METHODS: This cross-sectional study included 1,559 men, aged 25-86 years, who underwent a medical examination...
September 2017: Korean Journal of Family Medicine
https://www.readbyqxmd.com/read/29026419/effect-of-vitamin-d-deficiency-treatment-on-thyroid-function-and-autoimmunity-markers-in-hashimoto-s-thyroiditis-a-double-blind-randomized-placebo-controlled-clinical-trial
#19
Parichehr Vahabi Anaraki, Ashraf Aminorroaya, Massoud Amini, Fatemeh Momeni, Awat Feizi, Bijan Iraj, Azamosadat Tabatabaei
BACKGROUND: The link between autoimmune thyroid diseases and Vitamin D deficiency has been reported. However, there are controversies in this regard. We conducted a double-blind randomized placebo-controlled clinical trial to investigate the effect of Vitamin D deficiency treatment on thyroid function and autoimmunity marker (thyroid peroxidase antibody [TPO-Ab]) in patients with Hashimoto's thyroiditis. MATERIALS AND METHODS: Fifty-six patients with Hashimoto's thyroiditis and Vitamin D deficiency (25-hydroxyvitamin D level ≤20 ng/mL) were randomly allocated into two groups to receive Vitamin D (50000 IU/week, orally) or placebo for 12 weeks, as Vitamin D-treated (n = 30) and control (n = 26) groups, respectively...
2017: Journal of Research in Medical Sciences: the Official Journal of Isfahan University of Medical Sciences
https://www.readbyqxmd.com/read/29026270/longitudinal-study-on-the-effectiveness-of-vitamin-d-supplements-in-exclusively-breast-fed-infants
#20
Shintaro Terashita, Taichi Nakamura, Noboru Igarashi
Vitamin D deficiency is a common health problem in infancy. Breast-fed infants are at a higher risk of rickets than formula-fed infants. We observed fluctuations in vitamin D levels in infancy (phase I, 2009-2010) and considered the benefits of vitamin D supplementation specifically in exclusively breast-fed infants in Japan (phase II, 2015). Infants born at our hospital were enrolled in this study. In phase I, we measured 25-hydroxyvitamin D [25(OH)D] levels at 1- to 6-mo intervals from birth. In phase II, we measured 25(OH)D levels before and after supplementation...
2017: Clinical Pediatric Endocrinology: Case Reports and Clinical Investigations: Official Journal of the Japanese Society for Pediatric Endocrinology
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