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Updated: Jun 25, 2026
12:42
Imaging the Neutrophil Phagosome and Cytoplasm Using a Ratiometric pH Indicator
Published on: April 5, 2017
Swell activated chloride channel function in human neutrophils
Michael D Salmon1, Jatinder Ahluwalia
1University of East London, Stratford Campus, UK.
Biochemical and Biophysical Research Communications
|March 7, 2009
Summary
Neutrophil granulocytes use NADPH oxidase for innate immunity. Swell-activated chloride channels are essential for counteracting membrane depolarization, ensuring sustained neutrophil function during inflammation.
Area of Science:
- Immunology
- Cell Physiology
- Membrane Biology
Background:
- Neutrophil granulocytes are key innate immune cells.
- Neutrophil NADPH oxidase generates an electron current (I(e)) crucial for immune function.
- This electron current causes membrane depolarization, potentially inhibiting cell function if not balanced.
Purpose of the Study:
- To review research on the role of ion transport in counteracting NADPH oxidase-induced depolarization.
- To highlight the specific function of swell-activated chloride channels in human neutrophils.
Main Methods:
- This mini-review synthesizes existing research findings.
- Focuses on the physiological mechanisms of ion transport in neutrophils.
Main Results:
- NADPH oxidase activity leads to membrane depolarization due to electron current (I(e)).
- Electroneutrality must be maintained for continuous neutrophil function.
- Swell-activated chloride channels were identified as a mechanism to counteract this depolarization.
Conclusions:
- Swell-activated chloride channels play an essential role in human neutrophil function.
- These channels are critical for maintaining membrane potential during inflammatory responses.
- Understanding this mechanism is vital for innate immunity research.
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