Ros Detection
Ros Detection - Related Videos
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.
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.
07:33
Visualization of Vascular Ca2+ Signaling Triggered by Paracrine Derived ROS
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Cited by 10 •
2011
An efficient method to gain insights into visualizing the paracrine-derived ROS induction of endothelial Ca2+ signaling is described. This method takes advantage of measuring paracrine derived ROS triggered Ca2+ mobilization in vascular endothelial cells in a co-culture model.
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.
09:25
ROS Live Cell Imaging During Neuronal Development
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Cited by 9 •
2021
This protocol describes the use of a genetically encoded hydrogen peroxide (H2O2)-biosensor in cultured zebrafish neurons and larvae for assessing the physiological signaling roles of H2O2 during nervous system development. It can be applied to different cell types and modified with experimental treatments to study reactive oxygen species (ROS) in general development.
FAQs
Oxidation-sensitive probes respond when chemically active oxygen species alter the probe, producing a change in fluorescence or absorbance. The resulting signal serves as an indirect readout of oxidative activity rather than a direct inventory of every reactive species present. Researchers therefore interpret probe output with attention to the biological sample, probe behavior, and experimental controls.
Probe concentration, location, and timing can change which reactive oxygen species interact with the probe and when that interaction becomes measurable. A signal may therefore reflect a localized or time-dependent oxidative event rather than the entire sample. Accounting for these variables helps researchers distinguish biological changes from differences caused by experimental conditions or probe distribution.
Fluorescent approaches report oxidation through a change in emitted light, whereas colorimetric approaches measure a change in absorbance. Both rely on probe oxidation, but they provide different signal types for evaluating biological samples. The choice of approach can shape how researchers quantify oxidative changes and compare ROS-related responses across experiments.
Appropriate controls are essential because probe signals can vary with concentration, location, and timing, even when biological conditions appear similar. Controls help researchers determine whether a fluorescence or absorbance change reflects oxidative activity in the sample or an effect of the measurement conditions. Interpreting the experimental signal alongside these controls improves confidence in conclusions about redox changes.
A basic workflow selects a fluorescent or colorimetric probe, applies it to the biological sample under defined experimental conditions, and measures the resulting fluorescence or absorbance. Researchers then compare the signal with appropriate controls and consider when and where the response occurred. This sequence supports interpretation of oxidative changes without treating a single measurement as a complete cellular profile.
ROS detection can support studies of redox regulation, mitochondrial activity, inflammation, and cellular injury. It is also useful for examining disease mechanisms, toxicology, aging, and drug responses. In these settings, measurements help researchers connect oxidative changes with broader biological processes, while interpretation of probe signals provides context for how cells respond to stress or treatment.