Results 1 to 10 of about 16,182 (163)

25-Hydroxyvitamin D3 metabolism modulates the effect of variable UV exposure on 25-hydroxyvitamin D3 plasma concentrations [PDF]

Communications Medicine
Background 25-hydroxyvitamin D3 (25(OH)D3) affects immune function, bone health, and reproduction. The precursor of 25(OH)D3, vitamin D3, is synthesized upon ultraviolet (UV) radiation exposure, the levels of which vary.
Alexandra Scholze, Alexander Shinkov, Georgi S. Slavov, Merike Luman, Natalia Vallianou, Vaida Petrauskiene, Viera Stubnova, Thomas Wilson, Jianlin Shen, Eleni Geladari, Kyriakos Trigkidis, Kristian Assing, Inga A. Bumblyte, Hanns-Christian Gunga, Harry D. Kambezidis, Lars M. Rasmussen, Martin Tepel, Frank Hirche, Mathias Steinach, Gabriele I. Stangl, Uwe Feister, Qihua Tan   +21 more
doaj   +4 more sources

Levels of 25-hydroxyvitamin D3 in individuals with primary subjective tinnitus and their associations with tinnitus occurrence and severity [PDF]

Frontiers in Neurology
ObjectiveThis study aimed to analyze vitamin D3 levels in both a tinnitus group and a control group.Materials and methodsA total of 350 patients with primary subjective tinnitus and 347 participants serving as a control group were examined.
András Molnár, Panayiota Mavrogeni, Aphrodite Mavrogenis, Stefani Maihoub   +3 more
doaj   +2 more sources

25-hydroxyvitamin D is a predictor of COVID-19 severity of hospitalized patients.

PLoS ONE, 2022
ObjectivesStudies investigating the association between vitamin D and severity of COVID-19 have mixed results perhaps due to immunoassay assessment of total 25-hydroxyvitamin D (tD) (the sum of 25-hydroxyvitamin-D2 [25-OH-D2] and 25-hydroxyvitamin-D3 [25-
Nguyen N Nguyen, Muppala N P Raju, Briget da Graca, Dapeng Wang, Nada A Mohamed, Manohar B Mutnal, Arundhati Rao, Monica Bennett, Matthew Gokingco, Huy Pham, Amin A Mohammad   +10 more
doaj   +2 more sources

Serum vitamin D status and circulating irisin levels in older adults with sarcopenia

Frontiers in Nutrition, 2022
BackgroundEmerging evidence suggests sarcopenia, which is involved in the serum vitamin D deficiency and development of abnormal muscle metabolism, is predominately centered in the general older population.
Yawen Wang, Yawen Wang, Yeqing Gu, Jian Huang, Hongmei Wu, Ge Meng, Ge Meng, Qing Zhang, Li Liu, Shunming Zhang, Xuena Wang, Juanjuan Zhang, Shaomei Sun, Xing Wang, Ming Zhou, Qiyu Jia, Kun Song, Junsheng Huo, Bing Zhang, Gangqiang Ding, Peng Du, Kaijun Niu, Kaijun Niu, Kaijun Niu, Kaijun Niu, Kaijun Niu, Kaijun Niu   +26 more
doaj   +1 more source

Study on the Relationship between the Levels of Trace Elements and Vitamins in Peripheral Blood of Patients with End-stage Liver Disease and the Etiology and Severity of Disease [PDF]

Zhongguo quanke yixue, 2022
Background Patients with end-stage liver disease such as liver cirrhosis and acute-on-chronic liver failure (ACLF) often have abnormal intake or absorption of trace elements and vitamins, but the relevant tests have not been popularized in clinic, the ...
Ming KONG, Manman XU, Yu CHEN
doaj   +1 more source

Anti-Thymocyte Globulin Treatment Augments 1,25-Dihydroxyvitamin D3 Serum Levels in Patients Undergoing Hematopoietic Stem Cell Transplantation

Frontiers in Immunology, 2022
Application of anti-thymocyte globulin (ATG) is a widely used strategy for the prevention of graft-versus-host disease (GvHD). As vitamin D3 serum levels are also discussed to affect hematopoietic stem cell transplantation (HSCT) outcome and GvHD ...
Carina Matos, Katrin Peter, Laura Weich, Alice Peuker, Gabriele Schoenhammer, Tobias Roider, Tobias Roider, Sakhila Ghimire, Nathalie Babl, Sonja Decking, Sonja Decking, Martina Güllstorf, Nicolaus Kröger, Kathrin Hammon, Wolfgang Herr, Klaus Stark, Iris M. Heid, Kathrin Renner, Ernst Holler, Marina Kreutz   +19 more
doaj   +1 more source

SYNTHESIS OF 25-HYDROXYVITAMIN D3 CONJUGATE WITH KEYHOLE LIMPET HEMOCYANIN AND OBTAINING OF IMMUNE SERA [PDF]

Biotechnologia Acta, 2015
The study was aimed at obtaining polyclonal antibodies that recognize 25-Hydroxyvitamin D3, for their further specifications and applications in immunochemical test systems of 25-Hydroxyvitamin D3, determination in blood serum.
А. O. Mazanova, I. O. Shymanskyy, D. M. Petukhov, L. B. Drobot, M. M. Veliky, S. V. Komisarenko   +5 more
doaj   +1 more source

Effect of a Single High-Dose Vitamin D3 on the Length of Hospital Stay of Severely 25-Hydroxyvitamin D-Deficient Patients with COVID-19

Clinics, 2021
OBJECTIVES: In this ancillary analysis of a multicenter, double-blinded, randomized, placebo-controlled trial, we investigated the effect of a single high dose of vitamin D3 on the length of hospital stay of patients with severe 25-hydroxyvitamin D ...
Igor H. Murai, Alan L. Fernandes, Leila Antonangelo, Bruno Gualano, Rosa Maria Rodrigues Pereira   +4 more
doaj   +1 more source

A method to correct for the influence of bovine serum albumin-associated vitamin D metabolites in protein extracts from neonatal dried blood spots

BMC Research Notes, 2022
Objective We developed an assay to measure the concentration of 25 hydroxyvitamin D2 and D3 in protein extracts derived from stored neonatal dried blood spots.
Sanne Grundvad Boelt, Oleguer Plana-Ripoll, Clara Albiñana, Bjarni Vilhjálmsson, John J. McGrath, Arieh S. Cohen   +5 more
doaj   +1 more source

Retrospective Observational Study of Vitamin D Status in Neurological Patients

Acta Clinica Croatica, 2023
The main objective of this study was to investigate the prevalence of insufficient serum 25-hydroxyvitamin D level in a sample of neurological patients and to compare it to the estimate in the general Croatian population.
Lucija Zadro Matovina, Helena Trputac, Antonia Nicinger, Petra Magdalena Kes, Vanja Bašić Kes   +4 more
doaj   +1 more source