scholarly journals Vitamin D supplementation on anemia markers and the impact on PTH in patients with chronic kidney disease

2021 ◽  
Vol 10 (9) ◽  
pp. e53310917752
Author(s):  
Letícya Thaís Mendes Viana ◽  
Larissa Lages Rodrigues ◽  
Jurandy do Nascimento Silva ◽  
Maria Márcia Dantas de Sousa ◽  
Fhanuel Silva Andrade ◽  
...  

Chronic Kidney Disease (CKD) is an injury that causes progressive impairment of exocrine and endocrine renal functions. A very common complication is anemia, caused by reduced erythropoietin production, iron deficiency and inflammation. Evidence demonstrates that vitamin D has effects on anemia of inflammation, through the increase in erythrocytes and decrease in pro-inflammatory cytokines. This study aims to review the effects of vitamin D supplementation on 25(OH)D2 concentrations, on anemia markers and on PTH levels. This is an integrative review carried out through the search and selection of original publications, in english and portuguese, indexed in PubMed, Web of Science and Science Direct databases belonging to the 2010-2020 range. The results pointed to 25(OH)D2 concentrations compatible with normality after vitamin D supplementation. In five studies, there was no change in hemoglobin and PTH levels, and in four studies there was a reduction in the dose of EPO or erythroid stimulating agent, attributing such effect on the role of calcitriol as a substrate for bone marrow erythropoietic cells. The study concluded that vitamin D supplementation had beneficial effects for correction of 25(OH)D2 deficiency, however, it reinforces the controversy about the behavior of vitamin D on the improvement of anemia markers and PTH levels in patients with DRC. Therefore, it is suggested that the beneficial effect of vitamin D on anemia in renal patients may be independent of PTH suppression.

2021 ◽  
Author(s):  
Jordi Bover ◽  
Joel Gunnarsson ◽  
Philipp Csomor ◽  
Edelgard Kaiser ◽  
Giuseppe Cianciolo ◽  
...  

Abstract Background Secondary hyperparathyroidism (SHPT) is a common and major complication in chronic kidney disease (CKD), reflecting the increase of parathyroid hormone (PTH) in response to reduced Vitamin D signaling and hypocalcemia. This meta-analysis evaluated the impact of nutritional vitamin D (NVD) (cholecalciferol or ergocalciferol) on SHPT-related biomarkers. Methods A systematic literature search was performed in PubMed to identify relevant randomized control trials (RCTs) to be included in the meta-analysis. Fixed and random effects models were used to pool study level results. Effects were studied within NVD study arms and relative to control groups (placebo/no treatment); the former in order to identify the effect of actively altering biomarkers levels. Results Reductions in PTH from supplementation with NVD were small when observed within the NVD study arms (pooled reduction: 10.5 pg/ml) and larger when compared to placebo/no treatment (pooled reduction: 49.7 pg/ml). NVD supplementation increased levels of vitamin D (25(OH)D) in both analyses (increase within NVD study arm: 20.6 ng/ml, increase versus placebo/no treatment: 26.9 ng/ml). While small and statistically non-significant changes in phosphate and fibroblast growth factor 23 (FGF23) were observed, NVD supplementation caused calcium levels to increase when compared versus placebo/no treatment (increase: 0.23 mg/dl). Conclusions Our results suggest that supplementation with NVD can be used to increase 25(OH)D to a certain extent, while the potential of NVD to actively reduce PTH in ND-CKD patients with SHPT is limited.


Author(s):  
Jiwoon Kim ◽  
Ji Sun Nam ◽  
Heejung Kim ◽  
Hye Sun Lee ◽  
Jung Eun Lee

Abstract. Background/Aims: Trials on the effects of cholecalciferol supplementation in type 2 diabetes with chronic kidney disease patients were underexplored. Therefore, the aim of this study was to investigate the effects of two different doses of vitamin D supplementation on serum 25-hydroxyvitamin D [25(OH)D] concentrations and metabolic parameters in vitamin D-deficient Korean diabetes patients with chronic kidney disease. Methods: 92 patients completed this study: the placebo group (A, n = 33), the oral cholecalciferol 1,000 IU/day group (B, n = 34), or the single 200,000 IU injection group (C, n = 25, equivalent to 2,000 IU/day). 52% of the patients had less than 60 mL/min/1.73m2 of glomerular filtration rates. Laboratory test and pulse wave velocity were performed before and after supplementation. Results: After 12 weeks, serum 25(OH)D concentrations of the patients who received vitamin D supplementation were significantly increased (A, -2.4 ± 1.2 ng/mL vs. B, 10.7 ± 1.2 ng/mL vs. C, 14.6 ± 1.7 ng/mL; p < 0.001). In addition, the lipid profiles in the vitamin D injection group (C) showed a significant decrease in triglyceride and a rise in HDL cholesterol. However, the other parameters showed no differences. Conclusions: Our data indicated that two different doses and routes of vitamin D administration significantly and safely increased serum 25(OH)D concentrations in vitamin D-deficient diabetes patients with comorbid chronic kidney disease. In the group that received the higher vitamin D dose, the lipid profiles showed significant improvement, but there were no beneficial effects on other metabolic parameters.


2016 ◽  
Vol 23 (17) ◽  
pp. 1698-1707 ◽  
Author(s):  
Domenico Santoro ◽  
Vincenzo Pellicanò ◽  
Valeria Cernaro ◽  
Viviana Lacava ◽  
Antonio Lacquaniti ◽  
...  

2016 ◽  
Vol 2016 ◽  
pp. 1-21 ◽  
Author(s):  
José Pedraza-Chaverri ◽  
Laura G. Sánchez-Lozada ◽  
Horacio Osorio-Alonso ◽  
Edilia Tapia ◽  
Alexandra Scholze

In chronic kidney disease inflammatory processes and stimulation of immune cells result in overproduction of free radicals. In combination with a reduced antioxidant capacity this causes oxidative stress. This review focuses on current pathogenic concepts of oxidative stress for the decline of kidney function and development of cardiovascular complications. We discuss the impact of mitochondrial alterations and dysfunction, a pathogenic role for hyperuricemia, and disturbances of vitamin D metabolism and signal transduction. Recent antioxidant therapy options including the use of vitamin D and pharmacologic therapies for hyperuricemia are discussed. Finally, we review some new therapy options in diabetic nephropathy including antidiabetic agents (noninsulin dependent), plant antioxidants, and food components as alternative antioxidant therapies.


2009 ◽  
Vol 29 (2) ◽  
pp. 113-121 ◽  
Author(s):  
Tejas V. Patel ◽  
Ajay K. Singh

2011 ◽  
Vol 2011 ◽  
pp. 1-13 ◽  
Author(s):  
Luciana Gravellone ◽  
Maria Antonietta Rizzo ◽  
Valentina Martina ◽  
Nicoletta Mezzina ◽  
Anna Regalia ◽  
...  

Vitamin D deficiency appears to be an underestimated risk factor for cardiovascular disease in patients with chronic kidney disease. Evidence from both basic science and clinical studies supports the possible protective role of vitamin D beyond its effect on mineral metabolism. Toxicity of pharmacologic doses of active vitamin D metabolites, in particular calcitriol, is mainly due to the possibility of positive calcium and phosphorus balance. Therefore, vitamin D analogs have been developed, which suppress PTH secretion and synthesis with reduced calcemic and phosphatemic effects. Observational studies suggest that in hemodialysis patients the use of a vitamin D receptor (VDR) activator, such as calcitriol, doxercalciferol, paricalcitol, or alfacalcidol, is associated with a reduced mortality when compared with nonusers of any VDR activator. In this article the existing literature on the topic is reviewed, although a more robust answer to the question of whether or not VDR activators have beneficial effects in hemodialysis patients will hopefully come from a randomized controlled trial.


Author(s):  
Olga Kompaniets

The article is devoted to a review of the literature on the impact of hyperuricemia on the development and progression of chronic kidney disease (CKD). The tendency of changes of views on the role of uric acid in the pathogenesis of CKD is demonstrated. An analysis of experimental, epidemiological and clinical studies on the effects of uric acid on the physiology of the nephron and endothelial tissues, the relationship of hyperuricemia with metabolic and cardiorenal syndromes.


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