Results 51 to 60 of about 23,587 (266)

Functional Calcitriol/Vitamin D Receptor Signaling in Chronic Lymphocytic Leukemia

open access: yesBlood, 2019
Calcitriol, the biologically active form of vitamin D, modulates a plethora of cellular processes following its receptor ligation, namely the vitamin D receptor (VDR), a nuclear transcription factor that regulates the transcription of diverse genes.
Marina Gerousi   +7 more
openaire   +1 more source

Dietary supplementation with calcitriol or quercetin improved eggshell and bone quality by modulating calcium metabolism

open access: yesAnimal Nutrition
This study was aimed to investigate the effects of dietary calcitriol or quercetin supplementation on eggshell and bone quality of laying hens. In trial 1, 72 Hy-Line Brown layers (80-week-old) with weak-shelled strength (25 to 30 N) were assigned into 4
Yu Fu   +7 more
doaj   +1 more source

Curcumin Mitigates Immune-Induced Epithelial Barrier Dysfunction by Campylobacter jejuni [PDF]

open access: yes, 2019
Campylobacter jejuni (C. jejuni) is the most common cause of foodborne gastroenteritis worldwide. The bacteria induce diarrhea and inflammation by invading the intestinal epithelium. Curcumin is a natural polyphenol from turmeric rhizome of Curcuma longa,
Bereswill, Stefan   +14 more
core   +1 more source

Vitamin D. a dynamic molecule. how relevant might the dynamism for a vitamin be [PDF]

open access: yes, 2015
Cholecalciferol, the precursor of Vitamin D3, is a very old, highly conserved, molecule. Its presence is evident in non-mineralized 750 million-year-old living species, such as plankton.
Mazzaferro, Sandro, Pasquali, Marzia
core   +2 more sources

Simultaneous changes in the calcium-sensing receptor and the vitamin D receptor under the influence of calcium and calcitriol [PDF]

open access: yesNephrology Dialysis Transplantation, 2008
The regulatory mechanisms of parathyroid hormone (PTH) synthesis are complex, involving calcium, calcitriol, the calcium-sensing receptor (CaR) and the vitamin D receptor (VDR). In this study, the effects of calcium and calcitriol on the simultaneous expression of CaR and VDR mRNA and protein levels were assessed in parathyroid glands cultured in vitro.
Natalia, Carrillo-López   +6 more
openaire   +2 more sources

Calcitriol Alleviates MPP+- and MPTP-Induced Parthanatos Through the VDR/PARP1 Pathway in the Model of Parkinson’s Disease

open access: yesFrontiers in Aging Neuroscience, 2021
The pathogenesis of Parkinson’s disease (PD) is currently unclear. Recent studies have suggested a correlation between vitamin D and PD. Vitamin D and its analogs have protective effects in animal models of PD, but these studies have not clarified the ...
Junjie Hu   +8 more
doaj   +1 more source

Calcitriol affects hCG gene transcription in cultured human syncytiotrophoblasts

open access: yesReproductive Biology and Endocrinology, 2008
Background In pregnancy, maternal serum concentrations of calcitriol significantly rise as a result of increased renal and placental contribution in order to assure calcium supply for the developing fetus.
Díaz Lorenza   +8 more
doaj   +1 more source

Ascorbic Acid Modulates Collagen Properties in Glucocorticoid‐Induced Osteoporotic Bone: Insights into Chemical, Mechanical, and Biological Regulation

open access: yesAdvanced Healthcare Materials, EarlyView.
Osteoporosis from long‐term glucocorticoid (GIOP) use elevates susceptibility to fracture. This study shows GCs impair ascorbic acid (AA) metabolism in osteoblasts, collagen synthesis and extracellular matrix integrity. AA enhanced collagen biochemical and mechanical properties and restored osteoblast and endothelial function. These findings underscore
Micaila DE Curtis   +19 more
wiley   +1 more source

Regulation of calcitriol receptor and its mRNA in normal and renal failure rats

open access: yesKidney International, 1994
Homologous up-regulation of calcitriol receptor (VDR) by calcitriol is believed to be a transcriptional event. In this experiment, we studied the effect of calcitriol on VDR in normal and renal failure rats. The time course of the effect of calcitriol on VDR mRNA showed a biphasic change in VDR mRNA in response to calcitriol.
Patel, Sanjeevkumar R.   +2 more
openaire   +2 more sources

Platelet Lysate–Enriched Human Induced Pluripotent Stem Cell–Derived Chondrocyte Sheets for Bone Defect Repair via Endochondral Ossification

open access: yesAdvanced Healthcare Materials, EarlyView.
Human iPSC‐derived hypertrophic chondrocyte sheet promotes bone regeneration. Abstract Bone defects are a major clinical challenge, primarily owing to the limited self‐healing capacity of bones and the high risk of complications associated with conventional treatment strategies.
Yiwei Chen   +9 more
wiley   +1 more source

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