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Pharmacokinetic modeling of prenatal vitamin D exposure and the impact on offspring asthma and pulmonary function.
Biomed Pharmacother
January 2025
Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA. Electronic address:
Gestational 25-hydroxyvitamin D (25[OH]D) is important in fetal lung development and may influence offspring respiratory outcomes, making accurate exposure assessment essential to understand clinical associations. Therefore, we used the combined data from two large RCTs investigating prenatal vitamin D supplementation, which included early and late prenatal 25(OH)D measurements, to refine a population pharmacokinetic model of vitamin D-25(OH)D and estimate individual area under the curve (AUC) Z-scores. The primary outcome was physician-diagnosed offspring asthma/wheezing at ages 3 and 6 years, and lung function, as a secondary outcome, was evaluated by spirometry at the ages 6 and 8 years.
View Article and Find Full Text PDFThe Role of Severe Vitamin D Deficiency in Predicting the Risk of Severe Exacerbation in Patients With Chronic Obstructive Pulmonary Disease.
Int J Chron Obstruct Pulmon Dis
January 2025
Department of Emergency Medicine, West China Hospital, Sichuan University, Chengdu, People's Republic of China.
Background: This study aims to investigate the association between vitamin D levels and the risk of severe acute exacerbations of chronic obstructive pulmonary disease (AECOPD).
Methods: We conducted a prospective observational study with 636 COPD patients admitted for exacerbations between January 2021 and December 2022. Patients were categorized based on serum 25-hydroxyvitamin D levels: severe deficiency (<10 ng/mL), deficiency (10-20 ng/mL), insufficiency (20-30 ng/mL), or sufficiency (>30 ng/mL).
The exploration of the relationship between hyperuricemia, gout and Vitamin D deficiency.
J Nutr Biochem
January 2025
Department of family medicine & Division of General Internal Medicine, Department of internal medicine. Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, State Key Laboratory of Complex Severe and Rare Diseases (Peking Union Medical College Hospital), Beijing, China. Electronic address:
Background: Our study aims to provide evidence concerning the relationship between hyperuricemia, gout and Vitamin D deficiency by analyzing data from Peking Union Medical College Hospital (PUMCH), the National Health and Nutrition Examination Survey (NHANES) database, and through Mendelian randomization (MR) analyses.
Methods: Sample 1 involved patients from PUMCH (n=13,532), and sample 2 involved participants from NHANES (Unweighted n=22,860; weight n=182,829,142). Logistic regression and restricted cubic spline analyses were applied to assess above relationship.
Biochemical osteomalacia in adults undergoing vitamin D testing in the North-East of Scotland.
Ann Clin Biochem
January 2025
Department of Clinical Biochemistry, Aberdeen Royal Infirmary, NHS Grampian, Aberdeen, Scotland.
Background: International guidelines give greatly varying definitions of 25-hydroxyvitamin D (25OHD) insufficiency and deficiency. Vitamin D testing is increasing despite 2016 UK guidance for adults advising routine vitamin D supplementation October-March and year-round for high risk groups. A service evaluation of vitamin D testing and biochemical osteomalacia in the North-East of Scotland (57-58°N) could inform definitions and testing guidance.
View Article and Find Full Text PDFVitamin D: Evidence-Based Health Benefits and Recommendations for Population Guidelines.
Nutrients
January 2025
Orthomolecular Medicine News Service, Columbia, SC 29212, USA.
Vitamin D offers numerous under-recognized health benefits beyond its well-known role in musculoskeletal health. It is vital for extra-renal tissues, prenatal health, brain function, immunity, pregnancy, cancer prevention, and cardiovascular health. Existing guidelines issued by governmental and health organizations are bone-centric and largely overlook the abovementioned extra-skeletal benefits and optimal thresholds for vitamin D.
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