نتایج جستجو برای: vitamin d receptor vdr
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Alopecia areata (AA) is an inflammatory hair loss of unknown etiology. AA is chronic and relapsing, and no effective cure or preventive treatment has been established. Vitamin D was recently reported to be important in cutaneous immune modulation as well as calcium regulation and bone metabolism. It is well known that areata is common clinical finding in patients with vitamin D deficiency, vita...
Vitamin D(3) is known to be involved in neuroprotection and exert its neuroprotective effects by modulating neuronal calcium homeostasis and production of neurotrophins. The single nucleotide polymorphisms (SNP) in vitamin D receptor (VDR) gene which can influence the affinity of vitamin D(3) to its receptor may be related to neurodegenerative diseases and neuronal damage by altering the vitami...
Previously, we showed that N-methyl-N-nitrosourea–transformed MCF12F breast epithelial cells exhibited differential expression of several genes, including up-regulation of prohibitin and elevated sensitivity to a relatively noncalcemic vitamin D analogue, 1A-hydroxyvitamin D5 [1A(OH)D5]. In this report, we evaluated the functional significance of prohibitin in relation to the cellular response ...
Our recent study indicated that vitamin D and its receptors are important parts of the amyloid processing pathway in neurons. Yet the role of vitamin D receptor (VDR) in amyloid pathogenesis is complex and all regulations over the production of amyloid beta cannot be explained solely with the transcriptional regulatory properties of VDR. Given that we hypothesized that VDR might exist on the ne...
In the kidney vitamin D is converted to its active form. Since vitamin D exerts its activity through binding to the nuclear vitamin D receptor (VDR), most genetic studies have primarily focused on variation within this gene. Therefore, analysis of genetic variation in VDR and other vitamin D pathway genes may provide insight into the role of vitamin D in renal cell carcinoma (RCC) etiology. RCC...
Postnatal mammary gland morphogenesis is achieved through coordination of signaling networks in both the epithelial and stromal cells of the developing gland. While the major proliferative hormones driving pubertal mammary gland development are estrogen and progesterone, studies in transgenic and knockout mice have successfully identified other steroid and peptide hormones that impact on mammar...
The pandemic increase in obesity is inversely associated with vitamin D levels. While a higher BMI was causally related to lower 25-hydroxyvitamin D (25(OH)D), no evidence was obtained for a BMI lowering effect by higher 25(OH)D. Some of the physiological functions of 1,25(OH)2D3 (1,25-dihydroxycholecalciferol or calcitriol) via its receptor within the adipose tissue have been investigated such...
Nuclear receptors for the thyroid hormone and vitamin A and D cooperate with the retinoid X receptor (RXR) in activating the transcription. Although the hormone response elements for these receptors have been proposed in which spacing of the direct repeated motifs determine the specificity (so called 3-4-5 rule), vitamin D response elements (VDREs) in the natural context consist of often imperf...
Vitamin D, the major steroid hormone that controls mineral ion homeostasis, exerts its actions through the vitamin D receptor (VDR). The VDR is expressed in many tissues, including several tissues not thought to play a role in mineral metabolism. Studies in kindreds with VDR mutations (vitamin D-dependent rickets type II, VDDR II) have demonstrated hypocalcemia, hyperparathyroidism, rickets, an...
The crystal structures of the ligand binding domain of human vitamin D receptor (VDR) complexed with its natural ligand or the superagonists MC1288 or KH1060 have recently been reported. The crystallized ligand binding domain (LBD) of VDR, however, differs from the full-length VDR with respect to deletion of 50 amino acids between its helices 2 and 3. In this study, we investigated structurally...
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