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25-OH-Vitamin-D

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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
#1
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/28902929/women-with-recurrent-spontaneous-abortion-have-decreased-25-oh-vitamin-d-and-vdr-at-the-fetal-maternal-interface
#2
N Li, H M Wu, F Hang, Y S Zhang, M J Li
Immunological mechanisms have been proposed to underlie the pathogenesis of recurrent spontaneous abortion (RSA). Vitamin D has a potent immunomodulatory effect, which may affect pregnancy outcome. The objective of this study was to investigate 25-hydroxyvitamin D [25(OH) D] concentration and vitamin D receptor (VDR) expression in the decidual tissues of RSA patients. Thirty women with RSA (RSA group) and thirty women undergoing elective abortion (control group) were recruited during 2016 from gynecology outpatient clinics...
September 12, 2017: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/28902630/pseudohypoparathyroidism-type-1b-associated-with-assisted-reproductive-technology
#3
Monica Fernandez, Maria Jose Zambrano, Joel Riquelme, Claudia Castiglioni, Marie-Laure Kottler, Harald Jüppner, Veronica Mericq
Evidence suggests an increased incidence of imprinting disorders in children conceived by assisted reproductive technologies (ART). Maternal loss-of-methylation at GNAS exon A/B, observed in pseudohypoparathyroidism type 1b (PHP1B), leads to decreased expression of the stimulatory Gsα. We present a patient conceived by ART, who presented at age 4 years with delayed neurocognitive development and persistently increased creatine kinase (CK). At 6 years an elevated PTH was detected with normal calcium and a low 25(OH) vitamin D level (25OHD)...
September 13, 2017: Journal of Pediatric Endocrinology & Metabolism: JPEM
https://www.readbyqxmd.com/read/28861112/relationship-between-vitamin-d-levels-and-intravenous-immunoglobulin-resistance-in-kawasaki-disease
#4
Jae Sung Jun, Young Kwon Jung, Dong Won Lee
PURPOSE: Vitamin D is associated with various pathological conditions such as cardiovascular diseases and cancer. We investigated the relationship between vitamin D and Kawasaki disease (KD). METHODS: We performed a retrospective review of the medical records of patients with KD between February 2013 and March 2016 in Daegu Fatima Hospital. Study participants were grouped according to vitamin D serum concentration. Group 1 included patients with 25(OH)-vitamin D ≥20 ng/mL...
July 2017: Korean Journal of Pediatrics
https://www.readbyqxmd.com/read/28856215/verification-of-abbott-25-oh-vitamin-d-assay-on-the-architect-system
#5
Katrina Hutchinson, Martin Healy, Vivion Crowley, Michael Louw, Yury Rochev
OBJECTIVES: Analytical and clinical verification of both old and new generations of the Abbott total 25-hydroxyvitamin D (25OHD) assays, and an examination of reference Intervals. METHODS: Determination of between-run precision, and Deming comparison between patient sample results for 25OHD on the Abbott Architect, DiaSorin Liaison and AB SCIEX API 4000 (LC-MS/MS). Establishment of uncertainty of measurement for 25OHD Architect methods using old and new generations of the reagents, and estimation of reference interval in healthy Irish population...
April 2017: Pract Lab Med
https://www.readbyqxmd.com/read/28845832/performance-and-antrhropometric-characteristics-of-elite-rugby-players
#6
Federico Pasin, Barbara Caroli, Valentina Spigoni, Alessandra Dei Cas, Riccardo Volpi, Carlo Galli, Giovanni Passeri
BACKGROUND AND AIM OF THE STUDY: Physical performance is the result of a complex combination of several factors such as genetic and anthropometric aspects, nutrition and hormonal status. In the past few years many studies have considered the impact of vitamin D on muscular strength and athletic performance.The aim of the present study was to assess the anthropometric measures impacting on physical performance in a group of professional rugby athletes.  As a secondary aim we investigated a possible relationship between baseline vitamin D status and athletic performance status in these subjects...
August 23, 2017: Acta Bio-medica: Atenei Parmensis
https://www.readbyqxmd.com/read/28842760/prevalence-of-vitamin-d-deficiency-in-chronic-and-subacute-low-back-pain-patients-in-india-a-triple-arm-controlled-study
#7
Ajay Panwar, Chandrasekhar Valupadas, Madhavarao Veeramalla, Hunsur N Vishwas
Vitamin D is vital for musculoskeletal health and may be associated with subacute and chronic low back pain. The objective of this study was to estimate the prevalence of vitamin D deficiency among chronic low back pain (CLBP) and subacute low back pain (SLBP), and compare the same with healthy controls. This study was designed as triple-arm case-control study comprising of CLBP, SLBP, and controls. SLBP and CLBP cases were consecutively enrolled over 3 months of winter season from November 2016 to January 2017...
August 25, 2017: Clinical Rheumatology
https://www.readbyqxmd.com/read/28836077/circulating-il-8-levels-are-increased-in-patients-with-type-2-diabetes-and-associated-with-worse-inflammatory-and-cardiometabolic-profile
#8
F A Cimini, I Barchetta, A Porzia, F Mainiero, C Costantino, L Bertoccini, V Ceccarelli, S Morini, M G Baroni, A Lenzi, M G Cavallo
AIMS: Interleukin-8 (IL-8) is a chemokine involved in systemic immunity, macrophages infiltration and activation in adipose tissue and may play a significant role in the pathogenesis of type 2 diabetes (T2D) and atherosclerosis. Aims of this study were to evaluate circulating IL-8 levels in adult patients with T2D in comparison with non-diabetic subjects and to describe clinical and biochemical correlates of IL-8 concentration. METHODS: For this cross-sectional study, we enrolled 79 consecutive T2D individuals referring to our diabetes outpatient clinics at Sapienza University of Rome, and 37 sex, age and BMI comparable non-diabetic subjects as a control group...
August 23, 2017: Acta Diabetologica
https://www.readbyqxmd.com/read/28832616/low-25-oh-vitamin-d-concentrations-are-associated-with-emotional-and-behavioral-problems-in-german-children-and-adolescents
#9
Christiane Husmann, Mirjam Frank, Börge Schmidt, Karl-Heinz Jöckel, Jochen Antel, Volker Reissner, Lars Libuda, Johannes Hebebrand, Manuel Föcker
BACKGROUND: Evidence has accumulated for the association between low vitamin D serum concentrations and mental health disorders in both children and adults. We performed a cross-sectional analysis in a population-based sample of children and adolescents to detect associations between 25(OH)-vitamin D serum [25(OH)D] concentrations and scores of the five Strengths and Difficulties Questionnaire (SDQ) subscales and the total difficulties score in different age groups (age ≥3-<12 years and ≥12-<18 years)...
2017: PloS One
https://www.readbyqxmd.com/read/28831601/endothelin-1-%C3%AE-klotho-25-oh-vit-d-levels-and-severity-of-disease-in-scleroderma-patients
#10
Mehrzad Hajialilo, Parisa Noorabadi, Sepideh Tahsini Tekantapeh, Aida Malek Mahdavi
Considering the role of endothelin-1 (ET-1) in tissue remodeling and fibrosis during the development of scleroderma as well as the effect of α-Klotho in pathogenesis of calcinosis and/or endothelial cell injury and its correlation with severity of disease, this study aimed to evaluate serum ET-1, α-Klotho and 25(OH) vitamin D levels in patients with limited and diffuse scleroderma compared to healthy subjects. In this cross-sectional study, 60 scleroderma patients according to the ACR/EULAR 2013 criteria and 60 age- and sex-matched healthy controls were included...
August 22, 2017: Rheumatology International
https://www.readbyqxmd.com/read/28828345/evaluation-of-bone-density-serum-total-and-ionized-calcium-alkaline-phosphatase-and-25-hydroxy-vitamin-d-in-papillary-thyroid-carcinoma-and-their-relationship-with-tsh-suppression-by-levothyroxine
#11
Ali Kachui, Seyed Mashaallah Tabatabaizadeh, Bijan Iraj, Hasan Rezvanian, Awat Feizi
BACKGROUND: This study aimed to evaluate the situation of Bone Mineral Density (BMD), Z score, T score, serum level of corrected and ionized calcium, alkaline phosphatase and 25-hydroxy vitamin D in percutaneous transhepatic cholangiography (PTC) patients and correlation of these variants with thyroid stimulating hormone (TSH) suppression level by levothyroxine. MATERIALS AND METHODS: Among the patients referred to Esfahan's endocrinology research center, 34 PTC patients (aged 20-50 years) with a history of thyroidectomy and conceived radioactive iodine and suppressive dose of levothyroxine were evaluated in this case-control study, and 38 healthy persons participated as the control group (matched by age and sex, body mass index)...
2017: Advanced Biomedical Research
https://www.readbyqxmd.com/read/28828295/role-of-vitamin-d-in-cystic-fibrosis-and-non-cystic-fibrosis-bronchiectasis
#12
REVIEW
Maria Moustaki, Ioanna Loukou, Kostas N Priftis, Konstantinos Douros
Bronchiectasis is usually classified as cystic fibrosis (CF) related or CF unrelated (non-CF); the latter is not considered an orphan disease any more, even in developed countries. Irrespective of the underlying etiology, bronchiectasis is the result of interaction between host, pathogens, and environment. Vitamin D is known to be involved in a wide spectrum of significant immunomodulatory effects such as down-regulation of pro-inflammatory cytokines and chemokines. Respiratory epithelial cells constitutively express 1α-hydroxylase leading to the local transformation of the inactive 25(OH)-vitamin D to the active 1,25(OH)2-vitamin D...
August 8, 2017: World Journal of Clinical Pediatrics
https://www.readbyqxmd.com/read/28816531/prevalence-and-predictors-of-primary-hyperparathyroidism-amongpatients-with-urolithiasis
#13
S Sharma, A Rastogi, S K Bhadada, P Singh, S Varshney, A Behera, A Bhansali, S K Singh, D S Rao
BACKGROUND: Urolithiasis may be the only presenting manifestation of primary hyperparathyroidism (PHPT), and early detection of PHPT in such patients may prevent future urolithiasis and other PHPT complications. OBJECTIVES: To study the prevalence and predictors of PHPT in patients presenting with urolithiasis. SUBJECTS & METHODS: Consecutive patients presenting with urolithiasis were evaluated for clinical and biochemical manifestations of PHPT with serum and urine calcium, serum intact parathyroid hormone and 25 (OH) vitamin D...
August 17, 2017: Endocrine Practice
https://www.readbyqxmd.com/read/28815553/osteoporosis-in-erythropoietic-protoporphyria-patients
#14
M Biewenga, R H S Matawlie, E C H Friesema, H Koole-Lesuis, M Langeveld, J H P Wilson, J G Langendonk
BACKGROUND: Erythropoietic protoporphyria is a rare metabolic disease with painful photosensitivity due to protoporphyrin IX accumulation, resulting in lifelong light avoidance behaviour. OBJECTIVES: The aim of this study was to evaluate bone mineral density and known osteoporosis risk factors in erythropoietic protoporphyria patients. METHODS: In this cross-sectional study all erythropoietic protoporphyria patients attending the Erasmus MC outpatient clinic that had undergone bone mineral density measurements were included...
August 17, 2017: British Journal of Dermatology
https://www.readbyqxmd.com/read/28790836/evaluation-of-coronary-calcium-score-in-patients-with-normocalcemic-primary-hyperparathyroidism
#15
Patrícia Nunes Mesquita, Ana Paula Dornelas Leão Leite, Stella das Chagas Crisóstomo, Enio Veras Filho, Lucas da Cunha Xavier, Francisco Bandeira
RATIONALE: Given that the diagnosis of primary hyperparathyroidism (PHPT) is given at an increasingly less-symptomatic phase, and the literature data on the cardiovascular risk of patients with normocalcemic primary hyperparathyroidism (NPHPT) are controversial, the coronary calcium score (CCS), which is correlated with coronary artery disease, may be useful for clarifying the association between cardiovascular risk and NPHPT. OBJECTIVE: This research aims to describe the CCS and the clinical and laboratory variables of patients with NPHPT compared with a control group and to verify the presence of an association between NPHPT and CCS...
2017: Vascular Health and Risk Management
https://www.readbyqxmd.com/read/28766134/bone-health-in-long-term-gastric-cancer-survivors-a-prospective-study-of-high-dose-vitamin-d-supplementation-using-an-easy-administration-scheme
#16
Marta Climent, Manuel Pera, Isabel Aymar, José M Ramón, Luis Grande, Xavier Nogués
Bone disease in long-term survivors after gastric cancer resection has received little research attention. This study aimed to investigate bone health after curative resection of gastric cancer and the consequences of high-dose vitamin D supplementation in patients with low levels of 25-(OH)-vitamin D. Disease-free patients at least 24 months after gastric cancer resection represented the study cohort. Serum markers of bone metabolism were assessed at baseline and at 3 and 12 months. Bone mineral density and presence of fractures were assessed by X-ray at baseline...
August 1, 2017: Journal of Bone and Mineral Metabolism
https://www.readbyqxmd.com/read/28764845/impaired-calcium-sensing-distinguishes-primary-hyperparathyroidism-phpt-patients-with-low-bone-mineral-density
#17
Thomas J Weber, James Koh, Samantha M Thomas, Joyce A Hogue, Randall P Scheri, Sanziana A Roman, Julie A Sosa
CONTEXT: A subset of PHPT patients exhibit a more severe disease phenotype characterized by bone loss, fractures, recurrent nephrolithiasis, and other dysfunctions, but the underlying reasons for this disparity in clinical presentation remain unknown. OBJECTIVE: We sought to identify new mechanistic indices that could inform more personalized management of PHPT. DESIGN: Pre-, peri-, and postoperative data and demographic, clinical, and pathological information from patients undergoing parathyroidectomy for PHPT were collected...
September 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/28759618/prevalence-and-predictors-of-hypovitaminosis-d-among-the-elderly-in-subtropical-region
#18
Chi-Hsien Huang, Yu-Tung Anton Huang, Yu-Cheng Lai, Cheuk-Kwan Sun
The prevalence of low vitamin D status in the elderly population of subtropical area and the potential risk/protective factors have not been addressed. This cross-sectional questionnaire-based study, which collected demographic/anthropometric data and information on diet habit and sun exposure, recruited 170 subjects with mean age 70.9±5.6 in rural areas of southern Taiwan. Serum 25-OH vitamin D, calcium, and intact parathyroid hormone were also measured. Using cut-off level of 30 ng/mL, subjects were divided into low (n = 95) and normal (n = 75) serum vitamin D groups...
2017: PloS One
https://www.readbyqxmd.com/read/28752387/vitamin-and-trace-element-deficiencies-in-the-pediatric-dialysis-patient
#19
Lyndsay A Harshman, Kathy Lee-Son, Jennifer G Jetton
Pediatric dialysis patients are at risk of nutritional illness secondary to deficiencies in water-soluble vitamins and trace elements. Unlike 25-OH vitamin D, most other vitamins and trace elements are not routinely monitored in the blood and, consequently, the detection of any deficiency may not occur until significant complications develop. Causes of vitamin and trace element deficiency in patients on maintenance dialysis patient are multifactorial, ranging from diminished nutritional intake to altered metabolism as well as dialysate-driven losses of water-soluble vitamins and select trace elements...
July 27, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/28751957/vitamin-d-levels-in-subjects-with-or-without-chronic-kidney-disease-among-veterans-with-diabetes-in-north-east-united-states
#20
Subhashini Yaturu, Barbara Youngberg, Sonya Zdunek
AIM: To evaluate the prevalence of vitamin D deficiency and its relation to diabetes and kidney disease in Veterans residing in the North East United States (VISN 2). METHODS: In this retrospective study, we used data from the computerized patient record system at Stratton Veterans Administration Medical Center at Albany, NY (VHA) for those patients who had 25-hydroxyvitamin D levels and 1,25 (OH) vitamin D levels measured between 2007 and 2010. We collected demographic information including age, sex, body mass index and race; clinical data including diabetes, hypertension and CAD; and laboratory data including calcium, creatinine and parathyroid hormone (PTH) (intact)...
July 15, 2017: World Journal of Diabetes
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