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https://www.readbyqxmd.com/read/28448520/association-between-vitamin-d-deficiency-and-health-related-quality-of-life-in-patients-with-chronic-kidney-disease-from-the-know-ckd-study
#1
Tae Ryom Oh, Chang Seong Kim, Eun Hui Bae, Seong Kwon Ma, Seung Hyeok Han, Su-Ah Sung, Kyubeck Lee, Kook Hwan Oh, Curie Ahn, Soo Wan Kim
Vitamin D deficiency is a growing health problem in both the general population and in patients with chronic kidney disease (CKD). However, the relationship between serum 25-hydroxyvitamin D levels and health-related quality of life in CKD is not well established. This study examined the association between vitamin D deficiency and quality of life in pre-dialysis CKD patients. Serum 25-hydroxyvitamin D levels and the Korean version of the Kidney Disease Quality of Life short form were obtained for 1844 pre-dialysis CKD patients in the prospective KoreaN cohort Study for Outcomes in patients With Chronic Kidney Disease (KNOW-CKD)...
2017: PloS One
https://www.readbyqxmd.com/read/28448457/effects-of-vitamin-d-supplementation-on-bone-turnover-markers-a-randomized-controlled-trial
#2
Verena Schwetz, Christian Trummer, Marlene Pandis, Martin R Grübler, Nicolas Verheyen, Martin Gaksch, Armin Zittermann, Winfried März, Felix Aberer, Angelika Lang, Gerlies Treiber, Claudia Friedl, Barbara Obermayer-Pietsch, Thomas R Pieber, Andreas Tomaschitz, Stefan Pilz
Bone turnover markers (BTMs) are used to evaluate bone health together with bone mineral density and fracture assessment. Vitamin D supplementation is widely used to prevent and treat musculoskeletal diseases but existing data on vitamin D effects on markers of bone resorption and formation are inconsistent. We therefore examined the effects of vitamin D supplementation on bone-specific alkaline phosphatase (bALP), osteocalcin (OC), C-terminal telopeptide (CTX), and procollagen type 1 N-terminal propeptide (P1NP)...
April 27, 2017: Nutrients
https://www.readbyqxmd.com/read/28447433/serum-vitamin-d-level-is-related-to-disease-severity-in-pediatric-alopecia-areata
#3
Mehmet Unal, Gulsum Gonulalan
BACKGROUND: Alopecia areata (AA) is the most common cause of inflammatory hair loss. AA is considered an autoimmune disease and occurs with various autoimmune disorders. Recent studies have revealed connection between autoimmune diseases and vitamin D deficiency. OBJECTIVES: In this study, we investigated vitamin D status in AA and its relationship with disease severity, number of patches, and disease duration. METHODS: This study included 20 pediatric patients with AA and 34 pediatric healthy controls...
April 26, 2017: Journal of Cosmetic Dermatology
https://www.readbyqxmd.com/read/28446633/lactose-intolerance-lct-13910c-t-genotype-is-associated-with-plasma-25-hydroxyvitamin-d-concentrations-in-caucasians-a-mendelian-randomization-study
#4
Ohood Alharbi, Ahmed El-Sohemy
Background: The LCT-13910C>T gene variant is associated with lactose intolerance (LI) in different ethnic groups. Individuals with LI often limit or avoid dairy consumption, a major dietary source of vitamin D in North America, which may lead to inadequate vitamin D intake.Objective: The objective was to determine the prevalence of genotypes predictive of LI in different ethnic groups living in Canada and to determine whether the LCT genotype is associated with plasma 25(OH)D concentrations.Methods: Blood samples were drawn from a total of 1495 men and women aged 20-29 y from the Toronto Nutrigenomics and Health Study for genotyping and plasma 25(OH)D analysis...
April 26, 2017: Journal of Nutrition
https://www.readbyqxmd.com/read/28446555/higher-serum-25-oh-d-concentrations-are-associated-with-improved-fev1-and-fvc-in-adolescence
#5
Claudia Flexeder, Elisabeth Thiering, Sibylle Koletzko, Dietrich Berdel, Irina Lehmann, Andrea von Berg, Barbara Hoffmann, Carl-Peter Bauer, Joachim Heinrich, Holger Schulz
Vitamin D plays a role in the development of the immune system and the lung, as well as in airway remodelling. Therefore, this study investigated the association between serum 25-hydroxyvitamin D (25(OH)D) concentrations and spirometric lung function parameters at age 15 years.In the German birth cohorts GINIplus and LISAplus, lung function testing by spirometry and 25(OH)D measurements were performed during the 15-year follow-up examinations. Valid lung function measurements pre- and/or post-bronchodilation and serum 25(OH)D concentrations, which were adjusted for the date of blood sampling to account for seasonal variability, were available for 2607 adolescents...
April 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28445792/vitamin-d-supplementation-restores-the-blunted-muscle-protein-synthesis-response-in-deficient-old-rats-through-an-impact-on-ectopic-fat-deposition
#6
Audrey Chanet, Jérôme Salles, Christelle Guillet, Christophe Giraudet, Alexandre Berry, Véronique Patrac, Carla Domingues-Faria, Camille Tagliaferri, Katia Bouton, Justine Bertrand-Michel, Miriam Van Dijk, Marion Jourdan, Yvette Luiking, Sjors Verlaan, Corinne Pouyet, Philippe Denis, Yves Boirie, Stéphane Walrand
We investigated the impact of vitamin D deficiency and repletion on muscle anabolism in old rats. Animals were fed a control (1 IU vitamin D3/g, ctrl, n=20) or a vitamin D-depleted diet (VDD; 0 IU, n=30) for 6 months. A subset was thereafter sacrificed in the control (ctrl6) and depleted groups (VDD6). Remaining control animals were kept for 3 additional months on the same diet (ctrl9), while a part of VDD rats continued on a depleted diet (VDD9) and another part was supplemented with vitamin D (5 IU, VDS9)...
April 8, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/28445206/independent-effects-of-blood-pressure-and-parathyroid-hormone-on-aortic-pulse-wave-velocity-in-untreated-chinese-patients
#7
Yi-Bang Cheng, Li-Hua Li, Qian-Hui Guo, Fei-Ka Li, Qi-Fang Huang, Chang-Sheng Sheng, Ji-Guang Wang, Jan A Staessen, Yan Li
OBJECTIVE: Whether or not calcium-regulating hormones stiffen arteries independent of blood pressure (BP) is uncertain. We investigated the independent associations of carotid-femoral pulse wave velocity (PWV) with 25-hydroxy-vitamin D [25(OH)D], parathyroid hormone (PTH) and 24-h ambulatory BP in untreated Chinese patients. METHODS: Consecutive untreated patients referred for ambulatory BP monitoring were recruited. PWV was measured with a high-fidelity micromanometer and the SphygmoCor software (AtCor Medical, West Ryde, New South Wales, Australia)...
April 25, 2017: Journal of Hypertension
https://www.readbyqxmd.com/read/28443804/25-oh-d-levels-in-relation-to-gender-overweight-insulin-resistance-and-inflammation-in-a-cross-sectional-cohort-of-northern-italian-workers-evidence-in-support-of-preventive-health-care-programs
#8
Luisella Vigna, Letizia Cassinelli, Amedea Silvia Tirelli, Irene Felicetta, Filomena Napolitano, Laura Tomaino, Michela Mutti, Claudia Eleonora Barberi, Luciano Riboldi
OBJECTIVE: In recent years, the welfare of workers and the prevention of chronic disabling diseases has become a topic of great interest. This study investigates serum levels of total 25-hydroxyvitamin D (25(OH)D) in a cohort of overweight-obese and insulin-resistant northern Italian indoor workers in apparent good health followed a nutritional education program. METHODS: An observational cross-sectional study on 385 patients (females = 291, males = 94), age range 18-69 years and body mass index (BMI) > 25 kg/m(2), was performed at the Department of Occupational Medicine Milan, Italy, latitude 45...
April 26, 2017: Journal of the American College of Nutrition
https://www.readbyqxmd.com/read/28443718/crosstalk-between-bone-and-fat-tissue-associations-between-vitamin-d-osteocalcin-adipokines-and-markers-of-glucose-metabolism-among-adolescents
#9
Kelly Virecoulon Giudici, Regina Mara Fisberg, Dirce Maria Lobo Marchioni, Bárbara Santarosa Emo Peters, Lígia Araújo Martini
OBJECTIVES: This study aimed to investigate the relationship between 25-hydroxyvitamin D (25(OH)D), osteocalcin, markers of glucose metabolism, and obesity-related parameters among adolescents. METHODS: This was a cross-sectional study with 198 adolescents age 14-18 years. Weight, height, and waist and hip circumferences were measured, as well as the following biochemical parameters: serum 25(OH)D, parathyroid hormone (PTH), total (tOC) and undercarboxylated (ucOC) osteocalcin, adiponectin, leptin, glucose, and insulin...
April 26, 2017: Journal of the American College of Nutrition
https://www.readbyqxmd.com/read/28442927/mechanical-factors-and-vitamin-d-deficiency-in-schoolchildren-with-low-back-pain-biochemical-and-cross-sectional-survey-analysis
#10
Ahmad H Alghadir, Sami A Gabr, Einas S Al-Eisa
OBJECTIVE: This study was designed to evaluate the role of vitamin D, muscle fatigue biomarkers, and mechanical factors in the progression of low back pain (LBP) in schoolchildren. BACKGROUND: Children and adolescents frequently suffer from LBP with no clear clinical causes, and >71% of schoolchildren aged 12-17 years will show at least one episode of LBP. MATERIALS AND METHODS: A total of 250 schoolchildren aged 12-16 years were randomly enrolled in this study...
2017: Journal of Pain Research
https://www.readbyqxmd.com/read/28441982/25-hydroxyvitamin-d-biomarkers-of-eosinophilic-inflammation-and-airway-remodeling-in-children-with-newly-diagnosed-untreated-asthma
#11
Grazyna Sypniewska, Magdalena Krintus, Gabriele Fulgheri, Joanna Siodmiak, Magdalena Kuligowska-Prusinska, Beata Stepien-Jaszowska, Radosława Staszak-Kowalska, Anna Zawadzka-Krajewska, Szymon Kierat, Katarzyna Bergmann, Urszula Demkow
BACKGROUND: Low 25-hydroxyvitamin D (25[OH]D) and asthma development may be related to airway remodeling and eosinophilia. Periostin is proposed as a key molecule that links remodeling and eosinophilic inflammation. OBJECTIVE: We evaluated the association of 25(OH)D concentration with periostin, peripheral blood eosinophil counts, and immunoglobulin E (IgE) in children with newly diagnosed asthma. METHODS: The study included 150 children: 110 with atopic asthma and 40 constituted a reference group...
May 1, 2017: Allergy and Asthma Proceedings:
https://www.readbyqxmd.com/read/28441981/vitamin-d-and-food-allergies-in-children-a-systematic-review-and-meta-analysis
#12
Erin K Willits, Zhen Wang, Jay Jin, Bhavisha Patel, Megan Motosue, Amrita Bhagia, Jehad Almasri, Patricia J Erwin, Seema Kumar, Avni Y Joshi
BACKGROUND: Vitamin D insufficiency has been associated with immune dysfunction and linked to the epidemic of atopic diseases in the Western hemisphere, yet there are studies with conflicting results, and the risk has not been quantified uniformly across studies. OBJECTIVE: To perform a systematic review and meta-analysis to evaluate and quantify if vitamin D deficiency is associated with the presence and persistence of food allergy. METHODS: A systematic review was undertaken to assess for the association between food allergy and vitamin D status in children...
May 1, 2017: Allergy and Asthma Proceedings:
https://www.readbyqxmd.com/read/28441630/winter-to-summer-change-in-vitamin-d-status-reduces-systemic-inflammation-and-bioenergetic-activity-of-human-peripheral-blood-mononuclear-cells
#13
Emily K Calton, Kevin N Keane, Raquel Raizel, Jordan Rowlands, Mario J Soares, Philip Newsholme
BACKGROUND: Vitamin D status [25(OH)D] has recently been reported to be associated with altered cellular bioenergetic profiles of peripheral blood mononuclear cells (PBMCs). No study has tracked the seasonal variation of 25(OH)D and its putative influence on whole body energy metabolism, cellular bioenergetic profiles, inflammatory markers and clinical chemistry. MATERIAL AND METHODS: Whole body energy metabolism and substrate utilisation were measured by indirect calorimetry...
April 13, 2017: Redox Biology
https://www.readbyqxmd.com/read/28437713/reference-intervals-for-serum-24-25-dihydroxyvitamin-d-and-the-ratio-with-25-hydroxyvitamin-d-established-using-a-newly-developed-lc-ms-ms-method
#14
Jonathan C Y Tang, Holly Nicholls, Isabelle Piec, Christopher J Washbourne, John J Dutton, Sarah Jackson, Julie Greeves, William D Fraser
24,25(OH)2D is the product of 25(OH)D catabolism by CYP24A1. The measurement of serum 24,25(OH)2D concentration may serve as an indicator of vitamin D catabolic status and the relative ratio with 25(OH)D can be used to identify patients with inactivating mutations in CYP24A1. We describe a LC-MS/MS method to determine: (1) the relationships between serum 24,25(OH)2D and 25(OH)D; (2) serum reference intervals in healthy individuals; (3) the diagnostic accuracy of 24,25(OH)2D measurement as an indicator for vitamin D status; 4) 24,25(OH)2D cut-off value for clinically significant change between inadequate and sufficient 25(OH)D status...
April 12, 2017: Journal of Nutritional Biochemistry
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
#15
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/28432711/vdr-gene-methylation-as-a-molecular-adaption-to-light-exposure-historic-recent-and-genetic-influences
#16
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/28429905/maintenance-vitamin-d3-dosage-requirements-in-chinese-women-with-post-menopausal-osteoporosis-living-in-the-tropics
#17
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/28429014/formation-of-mono-and-binuclear-neodymium-iii-gluconate-complexes-in-aqueous-solutions-in-the-ph-range-of-2-8
#18
Bence Kutus, Norbert Varga, Gábor Peintler, Alexandru Lupan, Amr A A Attia, István Pálinkó, Pál Sipos
The complex formation between Nd(iii) and d-gluconate (Gluc(-)) is of relevance in modelling the chemical equilibria of radioactive waste repositories. In the present work, the formation of NdpGlucqH-r complexes at 25 °C and pH = 2-8 was studied via spectrophotometry, potentiometry, freezing point depression, conductometry and NMR spectroscopy. In addition to the four mononuclear complexes (pq-r = 110, 120, 130 and 11-2), the formation of two binuclear, so far unknown complexes (pq-r = 23-2 and 24-2) was revealed...
April 21, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
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
#19
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/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
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