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Showing 1 to 20 of 38 for “"25(OH)D"”.

  1. Effect of a Sliding Scale Vitamin D Supplementation Protocol on 25(OH)D Status in Elite Athletes with Spinal Cord Injury

    Stark, Lauren, Pritchett, Kelly, Pritchett, Robert, Broad, Elizabeth2017

    … with SCI (spinal cord injury) have insufficient 25(OH)D status which may be associated with decreased muscle strength. This study: 1) examined the effects of a 16-week sliding scale Vitamin D supplementation protocol on 25(OH)D concentration and 2) determined whether subsequent 25(OH)D status …

    central-wash Repository record

  2. Development of a non-invasive clinical screening tool to asses 25-hydroxyvitamin D (25(OH)D) serum levels in long-term care older adults

    Robbins, Ronna Nikole OsbornThe University of Texas at Austin2020

    … for the identification of hypovitaminosis D, 25-hydroxyvitamin D [25(OH)D] serum levels <30 ng/mL, in older adults living in long-term care communities. The primary hypothesis of this study was that hypovitaminosis D could accurately be predicted in long-term care older adults through a series …

    texas Repository record

  3. A review of serum 25-hydroxyvitamin D levels in Alaska native and non-natives in southwest Alaska

    Tiura, Melanee2013

    … darker skin pigmentation increase risk for Serum 25-hydroxyvitamin D [25(OH)D] deficiency and insufficiency. <br /><br /> <em>Purposes of the Study:</em> To evaluate the incidence of 25(OH)D insufficiency and deficiency in Southwest Alaska, differences in deficiency rates between Alaska Natives …

    emich Repository record

  4. Vitamin D, Calcium and Blood Pressure in the U.S.

    Bean, Sarah2016

    … health. The active form of vitamin D, 1,25-hydroxyvitamin D (25[OH]D), may influence blood pressure by increasing gastrointestinal calcium absorption. The objectives of this study were to first examine the association between blood pressure and blood serum 25(OH)D levels, and then explore …

    usfca Repository record

  5. Evaluation of an Updated Version of the Food Frequency and Sun Exposure Questionnaire for Assessing Vitamin D Status in Active Population

    Liang, JiaruiVirginia Tech2025

    … triads which compare vitamin D intake with serum 25-hydroxyvitamin D (25(OH)D and vitamin D intake from food records in athletes. METHODS: Forty-one participants completed a semiquantitative FFLQ, 3-day or 4-day food records, and had blood drawn for analysis of serum 25(OH)D. The FFLQ evaluated …

    vt Repository record

  6. Vitamin D status and longitudinal lung function decline in the Lung Health Study

    Kunisaki, Ken2014

    … data to test the hypothesis that baseline plasma 25-hydroxyvitamin D [25(OH)D] is lower in subjects with more rapid lung function decline, compared to those with slow lung function decline. We conducted a nested, matched case-control study in the Lung Health Study 3 cohort. Cases and controls were …

    umn Repository record

  7. The Relationship Between Vitamin D Status of Adult Women and Diet, Sun Exposure, Skin Reflectance, Body Composition, and Insulin Sensitivity

    McAdler, Marisa M2013

    … of sun exposure on vitamin D status (serum 25(OH)D), and identify other significant determinants of serum levels which may have the greatest effects on overall health. Participants (n = 34) were pre-menopausal women aged 18 to 50 years (mean age 39 ± 6 years), who had their blood drawn at a …

    calpoly Repository record

  8. Asociación de los niveles maternos de 25-hidroxivitamina D con la aparición de eventos adversos durante el embarazo, parto y en el neonato.

    Moreno Fuentes, Ana María2017

    … un papel muy importante durante el embarazo. La 25-hidroxivitamina D [25(OH)D] es el metabolito de la Vitamina D más abundante en suero y, aunque sin actividad biológica, se considera el marcador más fiable para determinar el estatus nutricional de Vitamina D de un individuo. Los niveles …

    murcia-diss Repository record

  9. A determination of vitamin D status and intake of pregnant and non-pregnant Saudi Arabian women in Mecca, Saudi Arabia

    Azhar, Wedad

    … of the present study was to determine serum 25(OH)D and PTH concentrations as well as vitamin D and Ca dietary intake in healthy pregnant (P) (n=48) and non-pregnant (NP) (n=70) Saudi Arabian women who reside in Mecca- Saudi Arabia. Age, occupation, skin color, smoking status, use of …

    emich Repository record

  10. An exploration of the calcium metabolic system in pregnancy and public health programmes to improve early nutrition in maternal-infant cohorts

    Hemmingway, AndreaUniversity College Cork2019

    … In the largest clinical study to date, serum 25- hydroxyvitamin D [25(OH)D] and parathyroid hormone [PTH] were analysed in 1754 women in the SCOPE pregnancy cohort. While 25% of participants had a 25(OH)D concentration > 75 nmol/L, 17% were < 30 nmol/L. Functional vitamin D deficiency, defined …

    cork Repository record

  11. The Impact of Vitamin D Status upon Markers of Athlete Health

    Allison, RLiverpool John Moores University2017

    … there is a pandemic of low serum vitamin D (25[OH]D) concentration, partly due to a lack of sun exposure (the primary route for synthesis) and modern lifestyle choices. The bioactive form of vitamin D, 1,25-dihydroxyvitamin D (1,25[OH]2D3) exerts its biological activity by binding to the …

    liverpool-jm Repository record

  12. Nonlinear models with measurement error: Application to vitamin D

    Curley, Brenna2017

    … A biomarker for vitamin D status is a person's 25-hydroxyvitamin D (or 25(OH)D) serum level. From a practical viewpoint, we cannot make public health recommendations using 25(OH)D levels. Ideally we want to be able to make recommendations for intakes of vitamin D. In our work, we model the …

    iastate Repository record

  13. Early Pregnancy Maternal Vitamin D Concentrations in Relation to Gestational Diabetes Mellitus, Mood or Anxiety Disorders, and Preeclampsia

    Arnold, Dodie2013

    … associations is unknown. Methods: In a case-cohort study nested within a prospective cohort, we examined these associations. Analytic samples included: 135 GDM cases and a randomly selected sub-cohort of 517; 148 MAD cases diagnosed before or during pregnancy and a sub-cohort of 554 (and …

    washington Repository record

  14. The Role of Vitamin D in Skeletal Muscle Function and Regeneration

    Owens, DJLiverpool John Moores University2015

    … hydroxylases required to convert Vitamin D to 25[OH]D and subsequently the bioactive 1α-25-dihydroxyvitamin D3 (1α-25[OH]2D3) (Girgis et al., 2014b). Crucially, the Vitamin D receptor (VDR) is also present in skeletal muscle (Srikuea, Zhang, Park-Sarge, & Esser, 2012) and upon exposure, binds …

    liverpool-jm Repository record

  15. Purification of Vitamin D Binding Protein and Its Role in the Uptake of 25-Hydroxyvitamin D by Cultured Kidney Cells (Mdck Cells, Tissue Culture, Dbp)

    Keenan, Michael JamesUniversity of Illinois at Urbana-Champaign2015

    … its use in studies investigating the uptake of 25(OH)D(,3) by kidney cell lines. DBP was isolated from pig plasma in three steps: chromatography on DEAE cellulose and DEAE Sephadex, followed by chromatofocusing. The procedure represents a shorter purification scheme than those previously …

    uiuc Repository record

  16. Natural Genetic Variation Affecting Calcium Homeostasis

    Replogle, Rebecca Anna

    … in serum Ca and increases renal conversion of 25 hydroxyvitamin D (25(OH)D) to 1,25 dihydroxyvitamin D (1,25(OH)2D). 1,25(OH)2D acts through the vitamin D receptor (VDR) to increase intestinal Ca absorption, renal Ca reabsorption and skeletal Ca resorption. Efficient intestinal Ca absorption, …

    purdue-thes Repository record

  17. Significance of vitamin D in systemic lupus erythematosus in Koreans

    성, 준모2011

    … 채혈 당시의 연령, 키, 몸무게, body mass index (BMI)를 측정하였고, 25-hydroxyvitamin D3 [25(OH)D]를 방사면역 측정법을 이용해 측정하였다. 루푸스 환자에서 채혈 당시의 임상 양상과 검사실 검사 결과를 확인하여 systemic lupus erythematosus disease activity index (SLEDAI)와 systemic lupus international collaborative clinics/american college of rheumatology damage …

    ajou Repository record

  18. The immunomodulatory properties of Vitamin D in vitro and in vivo

    Chambers, Emma SarahKing's College London2013

    … blood from a clinically well-characterized cohort of SS (n=14; mean improvement in lung function or FEV1 post 2-weeks oral prednisolone 16.1%) and SR (n=23; no improvement in FEV1) asthmatics was studied by ex vivo flow cytometry. Major findings included evidence for significantly higher …

    kings Repository record

  19. Nutrition and Physical Activity Cancer Prevention Guideline Adherence and Association with Circulating Concentrations of Vitamin D and Precancerous Lesions

    Kohler, Lindsay NicoleThe University of Arizona.2016

    … the evidence from published prospective cohort studies regarding adherence to the ACS and World Cancer Research Fund/American Institute for Cancer Research (WCRF/AICR) nutrition and physical activity cancer prevention guidelines and the risk of overall cancer incidence and/or cancer …

    arizona-thes Repository record

  20. Association of Differing Qatari Genotypes with Vitamin D Metabolites

    Dakroury, YoussraHull York Medical School, The University of Hull and The University of York2020

    … 220; control 178). LC-MS/MS analysis measured 1,25-dihydroxyvitamin-D (1,25(OH)2D), 25-hydroxyvitamin-D2 (25(OH)D2), 25-hydroxyvitamin-D3 (25(OH)D3), 24,25-dihydroxyvitamin-D (24,25(OH)2D) and 25-hydroxy-3epi-Vitamin-D (3epi25(OH)D). The same study population was used to investigate the …

    hull Repository record

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