alexa Relationship of 1,25 dihydroxy Vitamin D Levels to Clinical Outcomes in Critically Ill Patients with Acute Kidney Injury | OMICS International | Abstract
ISSN: 2161-0959

Journal of Nephrology & Therapeutics
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Research Article

Relationship of 1,25 dihydroxy Vitamin D Levels to Clinical Outcomes in Critically Ill Patients with Acute Kidney Injury

Anitha Vijayan*, Tingting Li, Adriana Dusso, Sanjay Jain and Daniel W Coyne

Renal Division, Washington University in St. Louis, St. Louis, MO, USA

*Corresponding Author:
Anitha Vijayan
Professor of Medicine, Renal Division
Washington University in St. Louis
Campus Box 8129, 660 S Euclid Ave
St. Louis, MO 63110, USA
Tel: 314-362-8293
Fax: 314-747-3743
E-mail: [email protected]

Received Date: December 10, 2014; Accepted Date: January 03, 2015; Published Date: January 08, 2015

Citation: Vijayan A, Li T, Dusso A, Jain S, Coyne DW (2015) Relationship of 1,25 dihydroxy Vitamin D Levels to Clinical Outcomes in Critically Ill Patients with Acute Kidney Injury. J Nephrol Ther 5:190. doi:10.4172/2161-0959.1000190

Copyright: © 2015 Vijayan A, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

Background: Calcitriol [1,25(OH)2D] plays a central role in endocrine regulation of bone and mineral metabolism. Low 1,25(OH)2D levels in chronic kidney disease (CKD) are associated with increased cardiovascular morbidity and mortality. However, the role of 1,25(OH)2D in acute kidney injury (AKI) is unclear, with very limited data. This pilot study examined the relationship between 1,25(OH)2D levels in critically ill patients with AKI and clinical outcomes. Methods: Plasma 1,25(OH)2D, intact parathyroid hormone (iPTH), 25-OH Vitamin D (VitD), calcium and phosphorus were measured in 34 patients with AKI without pre-existing chronic kidney disease and 12 healthy controls. Results: The mean 1,25(OH)2D levels were significantly lower in patients with AKI compared to controls, (42 ± 5.6 pg/mL vs. 76.1 ± 5.3 pg/mL, P<0.0001). The mortality in patients with AKI was 30%. 1,25(OH)2D levels were higher in non-survivors than survivors (62 ± 41.4 pg/mL vs. 33.7 ± 24.2 pg/mL respectively, P=0.046) and serum phosphorus was also higher in non-survivors (6.2 ± 2.1 mg/dL vs. 4.6 ± 1.6 mg/dL, P=0.019). However, on multivariate regression analysis, accounting for age and APACHE II score, higher levels of 1,25(OH)2D was not associated with mortality in critically ill patients with AKI. Conclusion: Mineral metabolism is dysregulated within days of acute renal injury in critically ill patients. On univariate analysis, high levels of calcitriol were associated with adverse clinical outcome in AKI. This association was not apparent after adjusting for age and APACHE II. Large controlled studies are needed to confirm these results, and determine if higher 1,25(OH)2D mediates worse outcomes in AKI.

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