Neutrophil Ros Production
Neutrophil Ros Production - Related Videos
03:47
Determination of ROS Production by Neutrophils upon Interaction with Opsonized Biofilm
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2025
In this video, we demonstrate an in vitro chemiluminescence assay to detect the generation of reactive oxygen species by neutrophils upon exposure to an opsonized bacterial biofilm.
07:17
Production and Detection of Reactive Oxygen Species (ROS) in Cancers
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Cited by 278 •
2011
Here we propose simple methods to test and evaluate the presence of reactive oxygen species in cells.
04:32
Induction and Visualization of Neutrophil Extracellular Traps in Pre-Labeled Neutrophils
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2025
This video demonstrates the induction and visualization of neutrophil extracellular traps or NETs in pre-labeled neutrophils using patient serum containing anti-neutrophil cytoplasmic antibodies. Furthermore, using an impermeable DNA dye and fluorescence microscopy enables the visualization of NETs.
03:50
ROS Detection with DCFH-DA Staining: Measuring Total ROS in Colorectal Cancer Cell Lines
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2023
This video describes the protocol for detecting total cellular reactive oxygen species (ROS) using 2',7'-dichlorodihydrofluorescein diacetate (DCFH-DA). This method helps visualize ROS localization in the adherent cells using a fluorescence microscope and further quantify ROS intensity with a fluorescence plate reader.
03:06
An In Vitro Assay to Study the Interaction between Neutrophils and Biofilm
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2025
This video demonstrates an in vitro assay to study neutrophil-biofilm interaction. The pathogenic bacteria embedded in the biofilm and isolated neutrophils were tagged using fluorescent labels, and the immune response by the neutrophils and the evasion of the immune response by the bacteria were assessed using a fluorescence microscope.
FAQs
Activation of the NADPH oxidase complex transfers electrons to molecular oxygen, initiating formation of superoxide during the oxidative burst. Superoxide and related oxidants can arise within phagosomes, where engulfed microbes are contained, and at the cell surface. This compartmentalized generation helps place chemically damaging molecules near invading organisms while influencing the surrounding inflammatory environment.
Reactive oxygen species generated inside phagosomes can act directly on engulfed microbes, damaging their membranes, proteins, and nucleic acids within a confined compartment. Production at the cell surface provides a different spatial context during host-pathogen contact. Examining these locations helps researchers distinguish antimicrobial effects from potential exposure of nearby host tissue to oxidants.
ROS activity does not operate alone. Neutrophils combine oxidant generation with phagocytosis, antimicrobial granules, and neutrophil extracellular traps. Phagocytosis helps contain organisms, granules contribute antimicrobial contents, and extracellular traps provide another way to engage pathogens. Considering these mechanisms together gives a more complete explanation of how neutrophils control infection than analyzing oxidative activity in isolation.
Analysis of neutrophil ROS production can help connect oxidative-burst activity with the effectiveness of rapid antimicrobial defense. Reduced or altered activity may provide context for impaired infection control, whereas normal oxidant generation does not by itself describe every neutrophil function. This makes the process a useful focus when investigating immunodeficiency alongside phagocytosis, granules, and extracellular traps.
Oxidants support host protection by damaging microbial membranes, proteins, and nucleic acids. However, excessive or misdirected production can injure host tissues, creating a biological balance between pathogen control and inflammatory damage. This dual effect is important when interpreting neutrophil activity in disease, because stronger oxidant generation is not necessarily equivalent to a better overall outcome.
The process links a rapid cellular response to two major research questions: whether invading microbes are controlled and whether inflammatory injury develops during that response. Investigators therefore examine neutrophil ROS production in relation to infection outcomes and therapies intended to regulate neutrophil activity. The goal is to understand how antimicrobial function can be supported without worsening host-tissue damage.