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Impact of Intravenous Ascorbic Acid Infusion on Novel Biomarkers in Patients with Severe Sepsis | OMICS International | Abstract
ISSN: 2161-105X

Journal of Pulmonary & Respiratory Medicine
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Research Article

Impact of Intravenous Ascorbic Acid Infusion on Novel Biomarkers in Patients with Severe Sepsis

Ramesh Natarajan*, Bernard J Fisher, Aamer A Syed and Alpha A Fowler

Division of Pulmonary Disease and Critical Care Medicine, Department of Internal Medicine, School of Medicine, Virginia Commonwealth University, Richmond, Virginia, USA

*Corresponding Author:
Ramesh Natarajan
Associate Professor of Medicine
Division of Pulmonary and Critical Care Medicine
Department of Internal Medicine,Virginia Commonwealth University
Richmond, VA 23298-0050
Tel: 804-827-1013
Fax: 804-628-0325
E-mail: [email protected]

Received date: September 11, 2014; Accepted date: October 27, 2014; Published date: November 31, 2014

Citation: Natarajan R, Fisher BJ, Syed AA, Fowler AA (2014) Impact of Intravenous Ascorbic Acid Infusion on Novel Biomarkers in Patients with Severe Sepsis. J Pulm Respir Med 4:214. doi:10.4172/2161-105X.1000214

Copyright: © 2014 Natarajan R, 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

Objective: Severe sepsis is a leading cause of mortality and morbidity in the critically ill with no reliably effective treatments. The goal of this study was to determine whether intravenous ascorbic acid impacted novel biomarkers in sepsis.

Methods: This is a retrospective study of a phase I, randomized, double-blinded, placebo controlled safety trial of intravenous ascorbic acid in severe sepsis. In the safety trial, 24 patients were randomized to receive full ICU standard of care support plus intravenous ascorbic acid (50 or 200 mg/kg/24h) for 4 days or placebo. Novel biomarkers of sepsis such as circulating cell free DNA (cf-DNA), mitochondrial DNA (mtDNA), endogenous antimicrobial proteins (alpha-4-defensin [α4D] and bactericidal permeability interacting protein [BPI]) and the red cell distribution width (RDW) were measured.

Results: Cf-DNA values were higher in non-survivors at baseline and remained elevated for 96 hours. MtDNA levels increased in the placebo group, but declined in the treatment groups without reaching statistical significance. RDW increased significantly only in the placebo group, while expression of the antimicrobial proteins increased significantly only in the treatment groups.

Conclusion: Ascorbic acid infusion may improve sepsis outcomes by reducing cf- and mtDNA levels while augmenting endogenous antimicrobial proteins and preserving RDW.

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