scholarly journals Human Memory Th17 Cell Populations Change Into Anti-inflammatory Cells With Regulatory Capacity Upon Exposure to Active Vitamin D

2019 ◽  
Vol 10 ◽  
Author(s):  
Wendy Dankers ◽  
Nadine Davelaar ◽  
Jan Piet van Hamburg ◽  
Jeroen van de Peppel ◽  
Edgar M. Colin ◽  
...  
Keyword(s):  
Vitamin D ◽  
Th17 Cell ◽  
Inflammatory Cells ◽  
Human Memory ◽  
Cell Populations ◽  
Active Vitamin ◽  
Active Vitamin D ◽  
Regulatory Capacity ◽  
Anti Inflammatory

scholarly journals Osteonecrosis development by tooth extraction in zoledronate treated mice is inhibited by active vitamin D analogues, anti-inflammatory agents or antibiotics

2022 ◽  
Vol 12 (1) ◽  
Author(s):  
Tomoya Soma ◽  
Ryotaro Iwasaki ◽  
Yuiko Sato ◽  
Tami Kobayashi ◽  
Eri Ito ◽  
...  
Keyword(s):  
Vitamin D ◽  
Tooth Extraction ◽  
Dental Treatment ◽  
Osteonecrosis Of The Jaw ◽  
Active Vitamin ◽  
Active Vitamin D ◽  
Vitamin D Analogues ◽  
Extraction Site ◽  
Treatment Administration ◽  
Anti Inflammatory

AbstractInvasive dental treatment such as tooth extraction following treatment with strong anti-bone resorptive agents, including bisphosphonates and denosumab, reportedly promotes osteonecrosis of the jaw (ONJ) at the extraction site, but strategies to prevent ONJ remain unclear. Here we show that in mice, administration of either active vitamin D analogues, antibiotics or anti-inflammatory agents can prevent ONJ development induced by tooth extraction during treatment with the bisphosphonate zoledronate. Specifically, tooth extraction during treatment with zoledronate induced osteonecrosis in mice, but administration of either 1,25(OH)2D3 or ED71, both active vitamin D analogues, significantly antagonized osteonecrosis development, even under continuous zoledronate treatment. 1,25(OH)2D3 or ED71 administration also significantly inhibited osteocyte apoptosis induced by tooth extraction and bisphosphonate treatment. Administration of either active vitamin D analogue significantly inhibited elevation of serum inflammatory cytokine levels in mice in response to injection of lipopolysaccharide, an infection mimetic. Furthermore, administration of either anti-inflammatory or antibiotic reagents significantly blocked ONJ development following tooth extraction and zoledronate treatment. These findings suggest that administration of active vitamin D, anti-inflammatory agents or antibiotics could prevent ONJ development induced by tooth extraction in patients treated with zoledronate.

scholarly journals Active vitamin D supplementation and COVID-19 infections: review

2021 ◽  
Author(s):  
Nakhoul Farid ◽  
Nakhoul Rola ◽  
Elias A. T. Koch ◽  
Nakhoul Nakhoul
Keyword(s):  
Vitamin D ◽  
Vitamin D Supplementation ◽  
Active Vitamin ◽  
Active Vitamin D

Design and synthesis of active vitamin D analogs

2010 ◽  
Vol 121 (1-2) ◽  
pp. 7-12 ◽  
Author(s):  
Silvina Eduardo-Canosa ◽  
Ramón Fraga ◽  
Rita Sigüeiro ◽  
Maria Marco ◽  
Natacha Rochel ◽  
...  
Keyword(s):  
Vitamin D ◽  
Active Vitamin ◽  
Vitamin D Analogs ◽  
Design And Synthesis ◽  
Active Vitamin D

scholarly journals Vitamin D and Serum Cytokines in a Randomized Clinical Trial

2010 ◽  
Vol 2010 ◽  
pp. 1-7 ◽  
Author(s):  
Eleanor Yusupov ◽  
Melissa Li-Ng ◽  
Simcha Pollack ◽  
James K. Yeh ◽  
Mageda Mikhail ◽  
...  
Keyword(s):  
Vitamin D ◽  
Placebo Group ◽  
Vitamin D3 ◽  
Intracellular Signaling ◽  
Final Visit ◽  
Active Vitamin ◽  
Gm Csf ◽  
Active Vitamin D ◽  
Significant Difference ◽  
Vitamin D3 Supplementation

Background. The role of vitamin D in the body's ability to fight influenza and URI's may be dependent on regulation of specific cytokines that participate in the host inflammatory response. The aim of this study was to test the hypothesis that vitamin D can influence intracellular signaling to regulate the production of cytokines.Subjects and Methods. This study was a 3-month prospective placebo-controlled trial of vitamin D3 supplementation in ambulatory adults [Li-Ng et al., 2009]. 162 volunteers were randomized to receive either 50 μg/d(2000 IU) of vitamin D3 or matching placebo. 25(OH)D and the levels of 10 different cytokines (IL-2, 4, 5, 6, 8, 10, 13, GM-CSF, IFN-γ, TNF-α) were measured in the serum of participants at baseline and the final visit. There were 6 drop-outs from the active vitamin D group and 8 from the placebo group.Results. In the active vitamin D group, we found a significant median percent decline in levels of GM-CSF (−62.9%,P<.0001), IFN-γ(−38.9%,P<.0001), IL-4 (−50.8%,P=.001), IL-8 (−48.4%,P<.0001), and IL-10 (−70.4%,P<.0001). In the placebo group, there were significant declines for GM-CSF (−53.2%,P=.0007) and IFN-γ(−34.4%,P=.0011). For each cytokine, there was no significant difference in the rate of decline between the two groups. 25(OH)D levels increased in the active vitamin D group from a mean of64.3±25.4 nmol/L to88.5±23.2 nmol/L.Conclusions. The present study did not show that vitamin D3 supplementation changed circulating cytokine levels among healthy adults.

scholarly journals Dynamic changes in calcium and phosphate plasma concentrations in the patients on peritoneal dialysis

2006 ◽  
Vol 63 (1) ◽  
pp. 27-30
Author(s):  
Natasa Jovanovic ◽  
Mirjana Lausevic ◽  
Biljana Stojimirovic
Keyword(s):  
Vitamin D ◽  
Renal Failure ◽  
Peritoneal Dialysis ◽  
End Stage Renal Disease ◽  
Calcium Concentration ◽  
Phosphate Binders ◽  
Active Vitamin ◽  
Active Vitamin D ◽  
Stage Renal Disease ◽  
End Stage

Background/Aim. The disturbances of active forms of vitamin D synthesis and disturbances in calcium and posphate metabolism develop early in chronic renal failure, when creatinine clearance is about 30 ml/min. Chronic hemodialysis and peritoneal dialysis only partially correct the biochemical environment of patients on chronic renal replacement therapy because of end-stage renal disease. These dialysis modalities can?t significantly affect the endocrine disturbances of chronic renal failure and they have minimal modulatory effect. The management of disturbed calcium (Ca) and phosphate (P) metabolism and the maintainance of Ca ? P product below 4.4 mmol/l thanks to the use of dialysate solutions with the appropriate calcium concentration and the careful dosage of phosphate binders, calcium and active vitamin D metabolits, are extremely important for the prevention of renal osteodystrophy, secondary hyperparathyroidism as well as low-bone turnover disease. The aim of the study was to analyze the plasma levels of calcium, phosphate, albumin, alkaline phosphatase and parathormon (PTH) in 58 patients who were treated with continuous ambulatory peritoneal dialysis (CAPD) from March to August 2003. The use of phosphate binders and the substitution with active vitamin D metabolits were also analyzed. Methods. We examined 58 patients, 30 males and 28 female, mean-age 52 years (range, 26-78 years), affected by end-stage renal disease of the different leading cause. The average time on peritoneal dialysis program was 20 months (2-66 months). Most of the patients were treated by CAPD, while only few of them performed automatic, cyclic or intermittent peritoneal dialysis. Most of the patients used a dialysate with 1.75 mmol/l calcium concentration. Results. The study showed that our patients on chronic CAPD program during several months had normal calcemia, phosphatemia and the level of alkaline phosphatase, and that they had Ca ? P product in the recommended range. PTH serum level ranged from 16 to 490 pg/l in our patients. Conclusion. The study showed that a balanced diet and a correct dosage of phosphate binders, as well as a careful substitution with active vitamin D metabolits render a good control of calcium and phosphate serum balance, as well as an effective prevention of renal osteodystrophy development in the patients on chronic peritoneal dialysis treatment.

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