Stepanova 2020 Methods Cell Biol

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Stepanova Anna, Galkin Alexander (2020) Measurement of mitochondrial H2O2 production under varying O2 tensions. Methods Cell Biol 155:273-93.

» PMID: 32183962

Stepanova Anna, Galkin Alexander (2020) Methods Cell Biol

Abstract: Mitochondria-derived reactive oxygen species (ROS) play an important role in the development of several pathologies and are also involved in physiological signaling. Molecular oxygen is the direct substrate of Complex IV of the respiratory chain, and at the same time, its partial reduction in mitochondria results in the formation of ROS, mainly H2O2. The accurate knowledge of the dependence of H2O2 production on oxygen concentration is vital for the studies of tissue ischemia/reperfusion, where the relationship between oxygen availability, respiration, and ROS production is critical. In this chapter, we describe a straightforward and reliable protocol for the assessment of H2O2 release by mitochondria at varying oxygen concentrations. This method can be used for any ROS-generating system where the effect of oxygen level on H2O2 production needs to be assessed. Copyright © 2020 Elsevier B.V. All rights reserved.

Keywords: ROS, oxygen dependence Bioblast editor: Komlodi T O2k-Network Lab: US NY New York Galkin A


Labels: MiParea: Respiration 

Stress:Oxidative stress;RONS  Organism: Mouse  Tissue;cell: Nervous system  Preparation: Isolated mitochondria 


Coupling state: LEAK, OXPHOS  Pathway: N, S, Gp  HRR: Oxygraph-2k, O2k-Fluorometer 

Labels, 2020-03, Tissue normoxia