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Measuring Nitrite and Nitrate, Metabolites in the Nitric Oxide Pathway, in Biological Materials using the Chemiluminescence Method
Published on: December 25, 2016
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Measurement of NO in biological samples
1Cardiovascular Research Group, Department of Biochemistry, University of Szeged, Szeged, Hungary; Pharmahungary Group, Szeged, Hungary.
British Journal of Pharmacology
|July 4, 2014
Summary
Nitric oxide (NO) plays key roles in health and disease. Measuring NO and its derivatives accurately is crucial for understanding its biological functions and developing new therapies.
Area of Science:
- Biomedicine
- Physiology
- Pharmacology
Background:
- Nitric oxide (NO), a diatomic free radical, is a vital gasotransmitter with diverse physiological and pathological roles.
- Despite decades of research, the exact functions of NO remain under investigation due to measurement challenges.
- Pharmacological modulation of NO levels holds therapeutic potential.
Purpose of the Study:
- To review major techniques for measuring NO and its derivatives in biological samples.
- To discuss the advantages and disadvantages of each measurement method.
- To emphasize the importance of comprehensive assessment for understanding NO's role.
Main Methods:
- Electron paramagnetic resonance (EPR) spectroscopy for direct NO detection.
- Electrochemical methods for NO and its metabolites.
- Fluorometric assays for NO and related molecules.
- Measurement of NO derivatives like nitrite/nitrate, NOS activity, cGMP, and nitrosothiols.
Main Results:
- NO measurement is challenging due to its high reactivity with various biomolecules.
- Contradictory findings persist regarding NO's role in biological processes.
- Each measurement technique offers specific advantages and limitations.
Conclusions:
- Accurate measurement of NO and its derivatives is essential for biomedical research.
- Concomitant assessment of NO synthesis, content, targets, and reaction products is recommended.
- Comprehensive analysis will provide meaningful insights into NO's role in health and disease.
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