Results 61 to 70 of about 2,525 (172)

Vitamin D Deficiency as a Debatable Modulator of Outcomes in Transfusion‐Dependent Thalassemia; An Overview of the Latest Findings: A Narrative Review

open access: yesHealth Science Reports, Volume 8, Issue 10, October 2025.
ABSTRACT Background and Aims Vitamin D deficiency (VDD) is highly prevalent in transfusion‐dependent thalassemia (TDT), yet its clinical implications beyond bone health remain controversial. This review explores the risk factors and clinical outcomes of VDD in TDT, with particular focus on its potential roles in cardiac iron deposition, osteoporosis ...
Ali Bazi   +6 more
wiley   +1 more source

Factors affecting vitamin D status in Moscow adolescents

open access: yesМедицинский совет, 2019
Justification of the study. The normalization of vitamin D levels in both children and adults is the goal of numerous studies around the world, and the setting of a number of objectives related to this vector of preventive medicine, dictates the need for
I. N. Zakharova   +5 more
doaj   +1 more source

Genetic Polymorphism of CYP2R1, CYP27A1, CYP27B1, and Vitamin D Metabolites Plasma Levels in Patients with Cardiovascular Disease: A Pilot Study

open access: yesBiomolecules
The active form of vitamin D, calcitriol (1,25(OH)2D3), is produced from 25(OH)D3 via enzymes encoded by CYP2R1, CYP27A1, and CYP27B1. Polymorphisms in these genes may alter vitamin D metabolism and increase cardiovascular disease risk.
Mohamed Abouzid   +8 more
doaj   +1 more source

Conservative treatment of bone tissue metabolic disorders among patients with vitamin D-dependent rickets type II with genetic abnormality of type I collagen formation

open access: yesBolʹ, Sustavy, Pozvonočnik, 2017
Background. The purpose of the article is to determine the effect of conservative therapy on genetically caused disorders of bone tissue metabolism in patients with vitamin D-dependent rickets type II and genetic abnormality of type I collagen formation (
S.M. Martsyniak
doaj   +1 more source

Impact of aging on cardiovascular dynamics and heart rate variability during passive head‐up tilt

open access: yesPhysiological Reports, Volume 13, Issue 14, July 2025.
Abstract During aging, arterial stiffness and blood pressure (BP) increase, while heart rate variability (HRV) decreases. We examined age‐related hemodynamics in 522 individuals without cardiovascular disease during passive head‐up tilt (HUT) using pulse wave analysis, whole‐body impedance cardiography, and HRV analysis.
Manoj Kumar Choudhary   +9 more
wiley   +1 more source

Safety and efficacy of a feed additive consisting of 25‐hydroxycholecalciferol produced with Saccharomyces cerevisiae CBS 146008 for salmonids, other fish species and all other animal species (except poultry, pigs and all ruminants) (DSM Nutritional Products Ltd.)

open access: yesEFSA Journal, Volume 23, Issue 6, June 2025.
Abstract Following a request from the European Commission, EFSA was asked to deliver a scientific opinion on the safety and efficacy of 25‐hydroxycholecalciferol as a nutritional feed additive for salmonids, other fish species and all other animal species (except poultry, pigs and all ruminants).
EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP)   +24 more
wiley   +1 more source

Vitamin D: A Bridge between Kidney and Heart

open access: yesLife
Chronic kidney disease (CKD) and cardiovascular disease (CVD) are highly prevalent conditions, each significantly contributing to the global burden of morbidity and mortality. CVD and CKD share a great number of common risk factors, such as hypertension,
Carmine Secondulfo   +12 more
doaj   +1 more source

Oral Supplementation with Calcitriol, Calcidiol, Vitamin D3 or Moderate Sun Exposure? [PDF]

open access: yesJournal of Investigative Dermatology, 2013
Abbreviations: BCC, basal cell carcinoma; CCS, Copenhagen City Study; SCC, squamous cell ...
openaire   +2 more sources

Effect of cystic fibrosis modulator therapies on serum levels of fat‐soluble vitamins

open access: yesJPGN Reports, Volume 6, Issue 2, Page 146-152, May 2025.
Abstract This is a prospective, multicenter study of a cohort of 224 cystic fibrosis (CF) patients treated with CF transmembrane conductance regulator (CFTR) modulators (CFTRm). Our aim was to prospectively analyze the effect of CFTRm treatment on fat‐soluble vitamin serum levels.
Elena Crehuá‐Gaudiza   +23 more
wiley   +1 more source

Seasonal variations in calcidiol and parathyroid hormone levels in healthy children and adolescents in Navarre, Spain: a cross-sectional study

open access: yesJRSM Open, 2016
Objective To analyze the seasonal variations in calcidiol and parathyroid hormone serum levels along a natural year in a paediatric population living in a region of the north of Spain considering a normal nutrition status. Design A cross-sectional study.
Teodoro Durá-Travé   +1 more
doaj   +1 more source

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