4.7 Review

Oxidative Stress Is a Concept, Not an Indication for Selective Antioxidant Treatment

Journal

ANTIOXIDANTS
Volume 12, Issue 6, Pages -

Publisher

MDPI
DOI: 10.3390/antiox12061188

Keywords

quantitation of oxidative stress; biomarkers; antioxidants; selective treatment

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The maintenance of steady-state redox status is crucial for physiological well-being. Changes in this status can lead to either beneficial signaling or oxidative damage. Quantitative evaluation of oxidative stress (OS) is challenging due to the lack of universal biomarkers, hindering selective antioxidant treatment for individuals experiencing OS. Without the ability to determine and quantify OS, therapeutic interventions based on the identify-and-treat approach cannot be assessed and are unlikely to form the basis for selective preventive measures against oxidative damage.
The steady-state redox status is physiologically important and therefore homeostatically maintained. Changes in the status result in signaling (eustress) or oxidative damage (distress). Oxidative stress (OS) is a hard-to-quantitate term that can be estimated only based on different biomarkers. Clinical application of OS, particularly for selective antioxidant treatment of people under oxidative stress, requires quantitative evaluation and is limited by the lack of universal biomarkers to describe it. Furthermore, different antioxidants have different effects on the redox state. Hence, as long as we do not have the possibility to determine and quantify OS, therapeutic interventions by the identify-and-treat approach cannot be assessed and are, therefore, not likely to be the basis for selective preventive measures against oxidative damage.

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