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Effects of vitamin D and/or calcium intervention on sleep quality in individuals with prediabetes: a post hoc analysis of a randomized controlled trial
PurposeThe aim of this study was to evaluate the effects of vitamin D and/or calcium supplementation on sleep quality in individuals with prediabetes.
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Vitamin D-Toxizität
Der klassische Indikator einer Vitamin D-Intoxikation ist die Hypercalcämie. Sie ist Folge einer Hyperabsorption an Calcium und Phosphor sowie einer...
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Cannabidiol improves thyroid function via modulating vitamin D3 receptor in vitamin D3 deficiency diet-induced rat model
The study was evaluated the impact of cannabidiol (CBD) on thyroid hormones by modulation cannabinoid receptor-2 (CB2) and vitamin D receptor (VDR)...
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High-Throughput Analysis of 25-OH-Vitamin D2 and D3 Using Multichannel Liquid Chromatography-Tandem Mass Spectrometry
Liquid-chromatography tandem mass spectrometry (LC-MS/MS) has been shown to be an effective approach in the clinical analysis of 25-OH-vitamin D in...
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Serum 25-hydroxyvitamin D threshold and risk of rickets in young children: a systematic review and individual participant data meta-analysis to inform the development of dietary requirements for vitamin D
PurposeThe objective of this systematic review was to determine a minimum serum 25-hydroxyvitamin D (25OHD) threshold based on the risk of having...
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Stability of sample extracts of vitamin D3 metabolites after chemical derivatization for LC–MS/MS analysis
Liquid chromatography/tandem mass spectrometry (LC–MS/MS) is widely used to determine vitamin D 3 metabolites in biological samples. The ionization...
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Vitamin D and the hepatitis B vaccine response: a prospective cohort study and a randomized, placebo-controlled oral vitamin D3 and simulated sunlight supplementation trial in healthy adults
PurposeTo determine serum 25(OH)D and 1,25(OH) 2 D relationship with hepatitis B vaccination (study 1). Then, to investigate the effects on hepatitis...
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Sample preparation techniques for extraction of vitamin D metabolites from non-conventional biological sample matrices prior to LC–MS/MS analysis
The determination of vitamin D metabolites as status marker or for diagnostic purposes is almost entirely conducted from blood serum or plasma. Other...
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Low vitamin D in dark-skinned immigrants is mainly due to clothing habits and low UVR exposure: a Danish observational study
Low 25-hydroxyvitamin D 3 (25(OH)D) among dark-pigmented persons has been observed. To elucidate the reason for this we examined sun behaviour,...
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Vitamin D esters are the major form of vitamin D produced by UV irradiation in mice
The primary source of vitamin D3 for humans is that produced in skin by ultraviolet irradiation. Ultraviolet (UV) B (UVB, 280–310 nm) light causes...
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Relationship of maternal obesity and vitamin D concentrations with fetal growth in early pregnancy
PurposeTo evaluate the effects of the association between first trimester vitamin D (VitD) concentrations and increased prepregnancy body mass index...
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The effects of fish oil plus vitamin D3 intervention on non-alcoholic fatty liver disease: a randomized controlled trial
PurposeThe present study aimed to investigate fish oil plus vitamin D 3 (FO + D) supplementation on biomarkers of non-alcoholic fatty liver disease...
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Vitamin D3 supplementation shapes the composition of gut microbiota and improves some obesity parameters induced by high-fat diet in mice
PurposeIndividuals with vitamin D (VD) insufficiency have a greater tendency to develop obesity and have increased systemic inflammation. Gut...
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Individual participant data (IPD)-level meta-analysis of randomised controlled trials with vitamin D-fortified foods to estimate Dietary Reference Values for vitamin D
Context and purposeIndividual participant data-level meta-regression (IPD) analysis is superior to meta-regression based on aggregate data in...
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Vitamin D supplementation in people with IBS has no effect on symptom severity and quality of life: results of a randomised controlled trial
PurposeSeveral small trials suggest a benefit of vitamin D supplementation in irritable bowel syndrome (IBS). The generalisability of these reports...
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Association of magnesium intake and vitamin D status with cognitive function in older adults: an analysis of US National Health and Nutrition Examination Survey (NHANES) 2011 to 2014
PurposeReduced cognitive function associated with aging has gained increasing attention as the US population ages. Magnesium plays a critical role in...
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Sun-induced production of vitamin D3 throughout 1 year in tropical and subtropical regions: relationship with latitude, cloudiness, UV-B exposure and solar zenith angle
This study evaluated the differences in vitamin D 3 synthesis in two different latitudes throughout 1 year using an in vitro model, which simulates...
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Dietary vitamin D intake and colorectal cancer risk: a longitudinal approach within the PREDIMED study
PurposeWe evaluated whether the intake of dietary vitamin D is associated with the incidence of both colorectal cancer (CRC) and colon cancer in the...
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Novel insight in thermo-oxidative kinetics of vitamin D-based supplement formulation using TG–DTG–DTA, ATR-FTIR and MALDI-MS techniques
This work provides detailed mechanistic analysis of thermo-oxidative degradation behavior of vitamin D3—Ca (CaCO 3 form) solid state supplement...
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Stoffwechsel
In der Haut synthetisiertes Vitamin D wird innerhalb von 8 bis 72 h ins Blut abgegeben und dort vor allem an das Vitamin D-bindende Protein (DBP)...