The Open Biochemistry Journal

ISSN: 1874-091X ― Volume 13, 2019

Nitric Oxide and its Metabolites in the Critical Phase of Illness: Rapid Biomarkers in the Making

Asad I Mian 1, Mayank Aranke 2, Nathan S Bryan 3, *
1 Dept of Pediatrics, Section of Emergency Medicine, Texas Children’s Hospital, Baylor College of Medicine, Houston TX 77030
2 College of Natural Sciences, University of Texas-Austin, Austin TX 78705
3 Brown Foundation Institute of Molecular Medicine, University of Texas Health Science Center, Houston TX 77030


The potential of nitric oxide (NO) as a rapid assay biomarker, one that could provide a quantum leap in acute care, remains largely untapped. NO plays a crucial role as bronchodilator, vasodilator and inflammatory mediator. The main objective of this review is to demonstrate how NO is a molecule of heavy interest in various acute disease states along the emergency department and critical care spectrum: respiratory infections, central nervous system infections, asthma, acute kidney injury, sepsis, septic shock, and myocardial ischemia, to name just a few. We discuss how NO and its oxidative metabolites, nitrite and nitrate, are readily detectable in several body compartments and fluids, and as such they are associated with many of the pathophysiological processes mentioned above. With methods such as high performance liquid chromatography and chemiluminescence these entities are relatively easy and inexpensive to analyze. Emphasis is placed on diagnostic rapidity, as this relates directly to quality of care in acute care situations. Further, a rationale is provided for more bench, translational and clinical research in the field of NO biomarkers for such settings. Developing standard protocols for the aforementioned disease states, centered on concentrations of NO and its metabolites, can prove to revolutionize diagnostics and prognostication along a spectrum of clinical care. We present a strong case for developing these biomarkers more as point-of-care assays with potential of color gradient test strips for rapid screening of disease entities in acute care and beyond. This will be relevant to global health.

Keywords: Acute kidney injury, Acute myocardial ischemia, Acute respiratory illness, Asthma, Critical care, Emergency department, Nitrate, Nitrite, Nitric Oxide, Sepsis, Shock.

Article Information

Identifiers and Pagination:

Year: 2013
Volume: 7
First Page: 24
Last Page: 32
Publisher Id: TOBIOCJ-7-24
DOI: 10.2174/1874091X01307010024

Article History:

Received Date: 28/9/2012
Revision Received Date: 28/11/2012
Acceptance Date: 28/11/2012
Electronic publication date: 8/3/2013
Collection year: 2013

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open-access license: This is an open access article licensed under the terms of the Creative Commons Attribution Non-Commercial License ( which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.

* Address correspondence to this author at the The University of Texas – Houston Health Sciences Center, Institute of Molecular Medicine, 1825 Pressler St 530C, Houston, TX 77030; Tel: 713-500-2439; Fax: 713 500 2447; E-mail:


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