Browsing Academic by Subject "Vitamin D"
Now showing items 1-18 of 18
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25-Hydroxyvitamin D Concentrations and Clostridium difficile Infection: A Meta-Analysis
( SAGE Publications Inc. , 2017 , Article)Background: Well-known risk factors for Clostridium difficile infection (CDI) are exposure to antibiotics and gastric acid suppressants. Recent studies have provided some evidence of an association between hypovitaminosis ... -
Agreement level of vitamin D intake between food frequency questionnaire and 24-h food recall in young Qatari women
( Emerald , 2022 , Article)Purpose – Prevalence of vitamin D insufficiency among young Qatari women is ∼85%. The purpose of the study was to develop a food frequency questionnaire (FFQ) and to assess the degree of agreement between food vitamin D ... -
Association between lifestyle factors and COVID-19: findings from Qatar Biobank
( preprints , 2023 , Article)Coronavirus Disease 2019 (COVID-19) exhibits a significant variation in presentation of symptoms ranging from mild to severe life-threatening symptoms, including death. COVID-19 infection susceptibility has been linked ... -
Association of serum vitamin D concentrations with dietary patterns in children and adolescents.
( BioMed Central , 2018 , Article)Because children have been advised on the dangers of sun exposure, diet is an important contributor of serum 25 hydroxyvitamin D [25(OH)D] concentrations. Aim of this study was to determine whether serum 25(OH)D concentrations ... -
Associations of Vitamin D Receptor Polymorphism rs1544410 with Adiposity Phenotypes
( MedCrave , 2016 , Article)Background: Vitamin D receptor (VDR) is present on adipocytes, and many studies were performed to investigate the association between polymorphisms in VDR gene with obesity. However, in the Arab Gulf populations, whereas ... -
Decreased weight gain and enhanced serum biochemical parameters in rats after vitamin D and Ca supplementation
( Malaysian Journal of Nutrition , 2018 , Article)Introduction: Obese individuals tend to have lower plasma concentrations of calcidiol and higher levels of plasma parathyroid hormone (PTH). Objective of this study was to evaluate the influence of vitamin D and Ca ... -
Evaluation of vitamin D supplementation intake among children; cross-sectional observational study
( Taylor & Francis , 2023 , Article)Background: The purpose of this study was to review the vitamin D supplementation intake status among children in the general public, determine the vitamin D supplements practices, and the barriers that parents and children ... -
The influence of vitamin D supplementation on IGF-1 levels in humans: A systematic review and meta-analysis
( Elsevier , 2020 , Article)© 2019 Elsevier B.V. Background: Inconsistencies exist with regard to influence of vitamin D supplementation on IGF-1 levels. The inconsistencies could be attributed to several factors, such as dosage and duration of ... -
Long Sun-Exposures Influencing High Sub-Cutaneous Synthesis of Vitamin-D3 may be Associated with Exacerbation of Symptoms in Allergic-Asthma.
(2018 , Article)Does excessive sun-exposure, non-use of sunscreen and/or high doses of vitamin-D3 supplements provoke exacerbation of asthma? Clinical examinations, retrospective records-access and questionnaire surveys were distributed ... -
Reply to "Double-counting of effect sizes and inappropriate exclusion of studies in "The influence of vitamin D supplementation on IGF-1 levels in humans: A systematic review and meta_analysis"
( Elsevier , 2021 , Other)Dear Editor, We appreciate the comments provided to us in the letter from Amiri et al. We would like to offer some clarifications in response to the comments. Firstly, the authors claimed that we included the control ... -
The role of polymorphisms in vitamin d-related genes in response to vitamin d supplementation
( Multidisciplinary Digital Publishing Institute (MDPI) , 2020 , Article)Background. Vitamin D deficiency represents a major healthcare problem. Vitamin D status is influenced by genetic and environmental determinants. Several observational studies have evaluated the association of single-nucleotide ... -
Serum 25-hydroxyvitamin D concentrations are inversely associated with body adiposity measurements but the association with bone mass is non-linear in postmenopausal women
( Elsevier , 2021 , Article)Vitamin D deficiency has been linked to increased adiposity and decreased bone density. It is not known if vitamin D is linked to adiposity measures and bone mass in postmenopausal Qatar women. We investigated an association ... -
Serum 25-Hydroxyvitamin D Is Inversely Associated with Monocyte Percentage to HDL Cholesterol Ratio among Young Healthy Adults in Qatar.
( MDPI , 2020 , Article)Low serum 25-hydroxyvitamin D [25(OH)D] is linked to an altered lipid profile. Monocytes play an important role in inflammation and lipid metabolism. Recently, monocyte percentage to HDL-cholesterol ratio (MHR) has emerged ... -
Serum vitamin D is associated with improved lung function markers but not with prevalence of asthma, emphysema, and chronic bronchitis
( Nature Research , 2020 , Article)Hypovitaminosis D has been linked to several non-bone diseases. Relation between 25-hydroxyvitamin D [25(OH)D] and lung function and lung diseases has received little attention at the global level. Cross-sectional data ... -
Use of dietary supplements among pregnant women in the center of Jordan
( Elsevier , 2020 , Article)Background: Balanced nutrition during pregnancy is necessary to meet the increasing demands of both maternal physiological changes and fetal growth. The present study aimed to investigate types of dietary supplements used ... -
Validation of FFQ Against Food Records for Vitamin D in Qatar Population
( Qatar University Press , 2020 , Poster)Background: The measurement of vitamin D nutritional status through dietary assessment is a cost effective method. Food frequency questionnaire (FFQ) is usually validated against food records (FR). There is no vitamin D ... -
Vitamin D for the Immune System in Cystic Fibrosis (DISC): A double-blind, multicenter, randomized, placebo-controlled clinical trial
( Oxford University Press , 2019 , Article)Background Patients with cystic fibrosis (CF) have increased risk of vitamin D deficiency owing to fat malabsorption and other factors. Vitamin D deficiency has been associated with increased risk of pulmonary exacerbations ... -
Vitamin D status affects proteomic profile of HDL-associated proteins and inflammatory mediators in dyslipidemia
( Elsevier , 2024 , Article)Vitamin D deficiency and dyslipidemia have substantial implications for human health globally. Vitamin D is essential for bone metabolism and immune modulation, and its insufficiency is linked to various chronic inflammatory ...