Extracellular Myeloperoxidase
Extracellular Myeloperoxidase - Related Videos
07:18
Quantifying Myeloperoxidase-DNA and Neutrophil Elastase-DNA Complexes from Neutrophil Extracellular Traps by Using a Modified Sandwich ELISA
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Cited by 12 •
2023
We present a protocol for a modified sandwich enzyme-linked immunosorbent assay technique to quantitatively measure two components of neutrophil extracellular trap remnants, myeloperoxidase conjugated-DNA and neutrophil elastase conjugated-DNA complexes,derived from activated neutrophils.
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.
04:33
Extracellular DNA Staining: A Method to Identify Extracellular DNA in FFPE Tissue Sections
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2023
This video describes the technique of staining extracellular DNA in FFPE tissue sections. The stained extracellular DNA can be quantitated to determine the efficacy of any therapeutic treatment that leads to the death of cancer cells.
04:13
Extracellular Vesicle Extraction: A Technique to Isolate Extracellular Vesicles from Whole Tissue Specimens Using Differential Centrifugation
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2023
This video describes the technique of extracting extracellular vesicles from fresh or frozen tissues. The isolated extracellular vesicles can be used for further analysis to uncover their significant roles in disease pathogenesis.
08:46
Strategic Endothelial Cell Tube Formation Assay: Comparing Extracellular Matrix and Growth Factor Reduced Extracellular Matrix
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Cited by 19 •
2016
This manuscript describes a tube formation assay to quantify the effects of a given compound or condition on angiogenesis by using endothelial cell tube formation in a controlled environment.
FAQs
Hydrogen peroxide and chloride ions provide the chemical inputs required for extracellular myeloperoxidase to generate hypochlorous acid. This oxidant can modify microbial proteins, disrupt membranes, and damage other cellular components. The reaction therefore connects neutrophil or monocyte activation with direct antimicrobial chemistry, while also creating a basis for host-cell injury when oxidation occurs outside the intended microbial target.
Localization determines which molecules encounter the oxidant produced by myeloperoxidase. When activity is directed toward invading bacteria or fungi, oxidation can support pathogen control. If the reaction occurs excessively or poorly localized in surrounding tissue, the same chemical reactivity can damage host structures and intensify inflammation. This balance is central to interpreting extracellular enzyme activity in disease studies.
Both degranulation and neutrophil extracellular trap formation provide routes by which activated neutrophils release myeloperoxidase beyond the cell. Once extracellular, the enzyme can encounter hydrogen peroxide and chloride ions and contribute to hypochlorous acid production. Considering these release processes helps researchers connect cellular activation patterns with antimicrobial effects and possible inflammatory tissue damage.
Measuring extracellular myeloperoxidase provides a way to study enzyme release and the oxidative response associated with activated innate immune cells. In experimental settings, this measurement can support investigations of antimicrobial defense, inflammatory activity, and the transition from beneficial pathogen killing to collateral tissue injury. Its interpretation is most informative when linked to the infection or inflammatory context being examined.
In infection studies, extracellular myeloperoxidase is relevant because its reaction products can damage bacterial and fungal proteins, membranes, and other cellular components. Researchers can therefore examine how innate immune activation contributes to microbial control while also considering whether oxidation becomes excessive. This dual perspective helps frame pathogen killing and host tissue damage as connected outcomes rather than separate processes.
The same oxidative mechanism that supports antimicrobial defense can amplify inflammation when myeloperoxidase activity is excessive or insufficiently localized. Studying extracellular myeloperoxidase in inflammatory disease allows researchers to examine this balance between protective immune activity and collateral tissue injury. It also connects cellular release events with broader questions about how innate immune responses shape disease-associated damage.