Results 81 to 90 of about 14,595,151 (227)

Serum Vitamin D Levels at Birth Are Not Associated With the Formation of Interglobular Dentin in Deciduous Teeth of Modern New Zealand Children

open access: yesAmerican Journal of Biological Anthropology, Volume 191, Issue 2, October 2026.
ABSTRACT Interglobular dentin (IGD) has been used as a biomarker for vitamin D deficiency (VDD) in past populations. However, an evidence‐based threshold for the levels of serum vitamin D associated with IGD occurrence has not been established. Here, we explore the association between perinatal serum vitamin D levels, presence of IGD, and biological ...
Anne Marie Sohler‐Snoddy   +6 more
wiley   +1 more source

Exploring Vitamin D Metabolism in Gynaecological Malignancies: Redox‐Dependent and Redox‐Independent Anticancer Mechanisms From Preclinical Models to Clinical Evidence

open access: yesCancer Medicine, Volume 15, Issue 10, October 2026.
ABSTRACT Gynaecological malignancies account for over 1.4 million new diagnoses, with outcomes constrained by late‐stage presentation and chemoresistance. Dysregulated redox homeostasis is a hallmark of tumourigenesis. Tumour cells maintain elevated basal reactive oxygen species (ROS), which support proliferative signalling but may also increase ...
Hoi Ching Cherry Chan   +4 more
wiley   +1 more source

1,25-Dihydroxyvitamin D-related hypercalcemia in lymphoma: two case reports.

open access: yes, 1990
We report two patients with non-Hodgkin's lymphoma in whom hypercalcemia and elevated 1,25 dihydroxyvitamin D (1,25-(OH)2D3) levels developed in the absence of any lytic bone lesions. Hypercalcemia responded only transiently to glucocorticoids which were
Godfraind, Catherine   +5 more
core   +1 more source

Association of Differing Qatari Genotypes with Vitamin D Metabolites

open access: yesInternational Journal of Endocrinology, 2020
Objective. Genetic studies have identified four Qatari genotypes: Q1 Arab, Bedouin; Q2 Asian/Persian; Q3 African; and a fourth admixed group not fitting into the previous 3 groups.
Youssra Dakroury   +6 more
doaj   +1 more source

Extensive Parenchymal Brain Calcification in a Patient With Autosomal Dominant Polycystic Kidney Disease and Stage 5 Chronic Kidney Disease

open access: yesClinical Case Reports, Volume 14, Issue 10, October 2026.
ABSTRACT Extensive parenchymal brain calcification is uncommon in chronic kidney disease (CKD): intracranial vascular calcification affects up to 10% of uremic patients, but widespread Fahr‐type parenchymal deposits are rare and, where reported, have occurred in patients with a coexisting hypoparathyroid or parathyroid‐hormone (PTH)‐resistant state. We
Noorelle Khan, Nicholas Streicher
wiley   +1 more source

The role of 1,25-dihydroxyvitamin D in the inhibition of bone formation induced by skeletal unloading [PDF]

open access: yes, 1983
Skeletal unloading results in osteopenia. To examine the involvement of vitamin D in this process, the rear limbs of growing rats were unloaded and alterations in bone calcium and bone histology were related to changes in serum calcium (Ca), inorganic ...
Morey-Holton, E.   +5 more
core  

Biological activity of 1,25-dihydroxyvitamin D2 and 24-epi-1,25-dihydroxyvitamin D2

open access: yes, 1988
The biological activity of 1,25-dihydroxyvitamin D2 [1,25(OH)2D2] and 24-epi-1,25-dihydroxyvitamin D2 [24-epi-1,25(OH)2D2] has been determined in vitamin D-deficient rats.
P. H. Stern   +4 more
core   +1 more source

Recurrent severe hypophosphatemia following intravenous iron administration

open access: yesClinical Case Reports, 2020
Key Clinical Message Hypophosphatemia postintravenous iron is frequent but under‐recognized. If prolonged or recurrent, it can cause osteomalacia. The likely mechanisms are direct toxicity to proximal tubular cells causing phosphate wasting, elevated ...
Melissa Stephanie Nataatmadja   +1 more
doaj   +1 more source

A method for the determination of the circulating concentration of 1,25-dihydroxyvitamin D

open access: yesThe Journal of Nutritional Biochemistry, 1990
Determination de la concentration dans le serum et le plasma en 25-hydroxyvitamine D (25-hydroxyvitamine D 2 et/ou 25-hydroxyvitamine D 3 ). Extraction ethanolique par dosage grâce a des proteines de liaison contenues dans le serum et ayant une tres forte affinite pour la 25-hydroxyvitamine D (D 2 /D 3 ) et grâce a l'elimination des metabolites de la ...
T C, Chen, A K, Turner, M F, Holick
openaire   +2 more sources

Vitamin D kinetics in vivo: effect of 1,25-dihydroxyvitamin D administration

open access: yes, 1989
Administration of 1,25-dihydroxyvitamin D [1,25(OH)2D] can increase the metabolic clearance rate (MCR) of 25-hydroxyvitamin D [25(OH)D]. To determine whether administration of 1,25(OH)2D can also influence the metabolic clearance rates (MCR) of 1,25(OH ...
M. E. Castro, B. P. Halloran
core   +1 more source

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