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Redox reactions are vital biochemical processes that underpin energy metabolism in cells. These reactions involve the transfer of electrons between molecules, occurring in tandem as oxidation and reduction. Oxidation refers to the loss of electrons, while reduction denotes their gain. This coupling ensures the seamless flow of electrons through metabolic pathways. For example, in bacterial metabolism, glucose undergoes oxidation to carbon dioxide, while oxygen is simultaneously reduced to...

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Oxidative metabolism.

¹Purdue University Cytometry Laboratories, West Lafayette, Indiana, USA.

Current Protocols in Cytometry

|September 5, 2008

Summary

This summary is machine-generated.

This study details methods for detecting reactive oxygen species (ROS) like peroxide and superoxide anion in cells. Protocols are provided for accurate measurement and calibration, particularly for neutrophils.

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Area of Science:

Cellular biology
Biochemistry
Immunology

Background:

Reactive oxygen species (ROS) play critical roles in cellular signaling and pathology.
Accurate quantification of ROS production is essential for understanding cellular function and disease.
Neutrophils are key immune cells known for their high ROS production during oxidative burst.

Purpose of the Study:

To establish reliable protocols for detecting and quantifying peroxide and superoxide anion production in various cell types.
To enable simultaneous detection of different ROS species.
To provide a method for calibrating flow cytometers for accurate H2O2 production per cell calculations.

Main Methods:

Detection of peroxide using 2',7'-dichlorofluorescin diacetate (DCFH-DA).
Detection of superoxide anion using hydroethidine.
Combination of methods for simultaneous ROS detection.
Flow cytometry with a support protocol for instrument calibration.

Main Results:

Validated methods for detecting peroxide and superoxide anion production.
Demonstrated applicability to diverse cell types, with specific emphasis on neutrophils.
Established a protocol for calculating H2O2 production per cell.

Conclusions:

The developed protocols offer a robust approach for measuring ROS in different cell types.
These methods facilitate a deeper understanding of cellular oxidative stress.
The detailed calibration protocol ensures accurate and reproducible ROS quantification, especially in highly reactive cells like neutrophils.