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Ling-Feng Wang et al.
The Kaohsiung journal of medical sciences, 31(2), 63-69 (2015-02-04)
Eosinophils are important inflammatory cells involved in the pathogenesis of chronic rhinosinusitis with nasal polyps (CRSwNP). Vitamin D and its derivatives, in addition to their classic role as regulators of electrolytes homeostasis, have modulatory effects in immunological and inflammatory responses....
Xiao-Liang Zhang et al.
Endocrinology, 155(12), 4939-4950 (2014-09-05)
Increasing evidence suggests the heterogeneity of macrophage phenotype and function ultimately determines the outcome of diabetic nephropathy (DN). This study aimed to investigate the effects of vitamin D on macrophage M1/M2 phenotype and its role in preventing podocyte impairment in...
Taku Toriumi et al.
Biomedical research (Tokyo, Japan), 36(1), 31-45 (2015-03-10)
The existence of progenitor/mesenchymal stem cells (MSCs) was demonstrated previously in human primary/deciduous teeth. In this study, we examined dental pulp cells from root portion (root cells) of primary teeth without discernible root resorption and compared them with pulp cells...
Su'e Chang et al.
Oncotarget, 6(10), 7675-7685 (2015-03-13)
VitaminD3 signaling is involved in inhibiting the development and progression of gastric cancer (GC), while the active vitamin D metabolite 1-alpha,25-dihydroxyvitamin D3 (1,25(OH)2D3)-mediated gene regulatory mechanisms in GC remain unclear. We found that miR-145 is induced by 1,25(OH)2D3 in a...
Richard J Grostern et al.
Archives of ophthalmology (Chicago, Ill. : 1960), 120(5), 607-612 (2002-05-25)
Although calcitriol (1,25-dihydroxycholecalciferol) and vitamin D(2) inhibit retinoblastoma growth in the athymic (nude) mouse xenograft (Y-79 cell line) model of retinoblastoma, they can cause severe toxicity. To examine the toxicity of and dose-dependent response for the inhibition of tumor growth...
Zhixia Song et al.
Metabolism: clinical and experimental, 63(10), 1324-1333 (2014-07-22)
The present study aimed to investigate the relationship between PI3K/p-Akt signaling pathway and podocyte impairment in DN rats as well as the protective effect of calcitriol. SD rats were randomly divided into four groups: normal control (NC), normal treated with...
Frederick G Strathmann et al.
Clinical chemistry, 57(9), 1279-1285 (2011-07-20)
1α,25-dihydroxy vitamin D [1,25(OH)(2)D] is the active metabolite of vitamin D. Antibody-based detection methods lack specificity, but when combined with isotope dilution/ultra-performance liquid chromatography (UPLC)-tandem mass spectrometry, immunoextraction provides an attractive method for 1,25(OH)(2)D. We developed a method for simultaneous...
Ting Chen et al.
Journal of molecular histology, 46(1), 1-11 (2014-12-04)
The adipose tissue-derived stem cells (ADSCs) represent a significant area of the cell therapy. Genetic modification of ADSCs may further improve their therapeutic potential. Here, we aimed to generate a lentiviral vector expressing insulin-like growth factor-I (IGF-1) and investigate the...
Francesca Tentori et al.
Clinical journal of the American Society of Nephrology : CJASN, 10(1), 98-109 (2014-12-18)
Elevated parathyroid hormone levels may be associated with adverse clinical outcomes in patients on dialysis. After the introduction of practice guidelines suggesting higher parathyroid hormone targets than those previously recommended, changes in parathyroid hormone levels and treatment regimens over time...
Manish D Sinha et al.
Pediatric nephrology (Berlin, Germany), 30(10), 1843-1852 (2015-05-16)
The aim of this study was to evaluate the association of serum intact fibroblast growth factor 23 (FGF23) concentrations with indexed left ventricular mass in children with non-dialysis stages 3-5 of chronic kidney disease (CKD). The study cohort comprised 83...
J L Finch et al.
Journal of the American Society of Nephrology : JASN, 12(7), 1468-1474 (2001-06-26)
19-Nor-1,25-(OH)(2)D(2), an analog of 1,25-(OH)(2)D(3), is used to treat secondary hyperparathyroidism because it suppresses parathyroid hormone synthesis and secretion with lower calcemic and phosphatemic activities. 19-Nor-1,25-(OH)(2)D(2) is approximately 10 times less active than 1,25-(OH)(2)D(3) in promoting bone resorption, which accounts...
Chi Chiu Mok et al.
Bone, 75, 222-228 (2015-03-13)
To evaluate the effect of switching from oral bisphosphonates to denosumab on bone mineral density (BMD) in long-term glucocorticoid users. Adult patients who were receiving long-term prednisolone (≥2.5 mg/day for ≥1 year) and oral bisphosphonates (≥2 years) were recruited. Participants...
R L Horst et al.
Journal of cellular biochemistry, 88(2), 282-285 (2003-01-10)
1alpha-Hydroxy-23 carboxy-24,25,26,27-tetranorvitamin D(3) (calcitroic acid) is known to be the major water-soluble metabolite produced during the deactivation of 1,25-(OH)(2)D(3). This deactivation process is carried out exclusively by the multicatalytic enzyme CYP24 and involves a series of oxidation reactions at C(24)...
Mariko Takami et al.
Journal of immunology (Baltimore, Md. : 1950), 195(6), 2520-2523 (2015-08-16)
The immunoregulatory functions of vitamin D have been well documented in various immunological disorders, including multiple sclerosis, arthritis, and asthma. IL-10 is considered a chief effector molecule that promotes the vitamin D-induced immunosuppressive states of T cells and accessory cells....
Nancy Noyola-Martínez et al.
The Journal of steroid biochemistry and molecular biology, 144 Pt A, 106-109 (2013-12-24)
Placenta is an important source of endocrine and immunological factors. During pregnancy, calcitriol, the active metabolite of vitamin D, is also metabolized by decidua and placental tissue by means of CYP27B1 and CYP24A1 for synthesis and inactivation of calcitriol respectively....
M Sato et al.
Oral diseases, 21(1), e86-e97 (2014-03-13)
Mesiodentes are usually found in the central position of the upper or lower jaw as supernumerary teeth. Here, we obtained 10 mesiodentes and three permanent teeth (PT) and separated the dental pulp (DP) from these into crown and root portions....
Joanna Wietrzyk et al.
Oncology research, 16(11), 517-525 (2008-03-01)
New vitamin D analogs are interesting candidates for anticancer treatment, including squamous cell carcinomas (SCCs), especially in combination with cytostatics. In order to evaluate the effect of combined application of cisplatin, imatinib, or docetaxel and new vitamin D analogs [PRI-1906:...
Dengshun Miao et al.
Endocrinology, 145(4), 2046-2053 (2004-01-01)
We have examined the role of PTH in the postnatal state in a mouse model of PTH deficiency generated by targeting the Pth gene in embryonic stem cells. Mice homozygous for the ablated allele, when maintained on a normal calcium...
Griet Glorieux et al.
Scientific reports, 4, 6390-6390 (2014-09-18)
Sterile single-use ultrafilters are used in dialysis for the preparation of the substitution fluid given to patients undergoing dialysis treatments with high convective fluid removal. The retention of pyrogenic agents by the ultrafilters is crucial to avoiding inflammatory responses. The...
Shigeaki Kato et al.
Current opinion in nephrology and hypertension, 16(4), 297-304 (2007-06-15)
Vitamin D has diverse biological actions, and consequently the mechanisms behind how it regulates gene transcription are diverse. Unlike its well described positive effects on gene transcription, little is known about how vitamin D induces transcriptional repression. Vitamin D-induced transcriptional...
Marc Thill et al.
Anticancer research, 35(2), 1197-1203 (2015-02-11)
Vitamin D exhibits multiple anti-proliferative and pro-differentiating actions. Prostaglandin-(PG)E2 is a tumor-promoting tissue hormone anabolized by cyclooxygenase-2 (COX-2). Recently, a link between the PG and vitamin D metabolism was reported. The influence of calcitriol and celecoxib on the proliferation of...
Rachael M Biancuzzo et al.
The Journal of clinical endocrinology and metabolism, 98(3), 973-979 (2013-02-07)
The purpose of this study was to determine 1,25-dihydroxyvitamin D3 [1,25(OH)2D3] and 1,25-dihydroxyvitamin D2 [1,25(OH)2D2] levels in healthy adults consuming 1000 IU vitamin D2 or vitamin D3 per day for 11 weeks. Blood from 34 healthy male and female adults...
D R Zimmerman et al.
Archives of biochemistry and biophysics, 392(1), 14-22 (2001-07-27)
Calcitroic acid (1 alpha-hydroxy-23 carboxy-24,25,26,27-tetranorvitamin D(3)) is known to be the major water-soluble metabolite produced during the deactivation of 1 alpha,25-dihydroxyvitamin D(3). This deactivation process involves a series of oxidation reactions at C(24) and C(23) leading to side-chain cleavage and...
Ghaith Bakdash et al.
Vaccine, 32(47), 6294-6302 (2014-09-23)
Vitamin D is recognized as a potent immunosuppressive drug. The suppressive effects of vitamin D are attributed to its physiologically active metabolite 1,25 dihydroxy vitamin D3 (calcitriol), which was shown, to prime dendritic cells (DCs) to promote the development of...
Kimberly O O'Brien et al.
The American journal of clinical nutrition, 96(1), 64-72 (2012-06-01)
Factors affecting bone calcium deposition across pregnancy and lactation are not well characterized. The impact of maternal age, calcium intake, race-ethnicity, and vitamin D status on the rate of bone calcium deposition (VO+) was assessed across pregnancy and lactation. Stable...
K Afsal et al.
Tuberculosis (Edinburgh, Scotland), 94(6), 599-605 (2014-12-03)
1,25-dihydroxy vitamin D3 (1,25(OH)2D3) is a potent immuno-modulator which induces LL-37, the active peptide of cathelicidin, and restricts the growth of Mycobacterium tuberculosis (Mtb) in human macrophages. In the present study, we investigated the effect of 1,25(OH)2D3 on cathelicidin antimicrobial...
Sabine Hünten et al.
Oncotarget, 6(18), 15842-15856 (2015-07-15)
Cystatin D (CST5) encodes an inhibitor of cysteine proteases of the cathepsin family and is directly induced by the vitamin D receptor (VDR). Interestingly, vitamin D3 exerts tumor suppressive effects in a variety of tumor types. In colorectal cancer (CRC)...
Justyna Trynda et al.
International journal of molecular sciences, 16(10), 24873-24894 (2015-10-23)
Analogs of 1,25-dihydroxyergocalciferol, modified in the side-chain and in the A-ring, were tested for their antiproliferative activity against a series of human cancer cell lines in vitro and in vivo toxicity. The proliferation inhibition caused by the analogs was higher...
Ela Haddur et al.
Biochemistry and cell biology = Biochimie et biologie cellulaire, 93(3), 268-271 (2015-04-29)
Calcitriol, the active form of vitamin D, is known for its anticancer properties including induction of apoptosis, inhibition of angiogenesis, and metastasis. Calcitriol also increases intracellular calcium triggering apoptosis in a calpain-dependent manner. Since the main storage unit for cellular...
Sui Chu Yin et al.
Allergy, asthma & immunology research, 7(4), 393-403 (2015-03-10)
House-dust-mite (HDM) major allergen Der p2 shares homology and function with Toll-like receptor (TLR) signaling protein myeloid differentiation-2 (MD2) and may lead to airway inflammation. Should Der p2 be internalized by human airway epithelium, it has the theoretical propensity to...