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In the neutrophil oxidative burst test heparinized whole blood is incubated at 37 °C with phorbol myristate acetate (PMA), a compound known to stimulate oxidative burst activity. Each flow cytometry pattern is referenced to the patients non-stimulated cells. In addition, a control blood is included in each run.
Myeloperoxidase (MPO) is a peroxidase enzyme that in humans is encoded by the MPO gene on chromosome 17. [5] MPO is most abundantly expressed in neutrophils (a subtype of white blood cells), and produces hypohalous acids to carry out their antimicrobial activity, including hypochlorous acid, the sodium salt of which is the chemical in bleach.
Most notably, oxidative burst post fertilisation can be seen in the sea urchin egg. This is believed to be evolutionally divergent from that in neutrophils. Hydrogen peroxide is produced by egg oxidase activity following an increase in oxygen consumption. [19] This is essential for the cross-linking of the ovum proteins to prevent lethal ...
The innate immune system responds quickly to infection, with neutrophils (a type of white blood cells) being the first responders. [1] [2] Neutrophils enter the site of infection and begin to phagocytose (take up) pathogens. [1] [2] [4] Once engulfed, the neutrophils must then degrade the captured pathogens–a process known as intracellular ...
[7] fMLF and a sampling of other, less potent, N-formyl oligopeptides were then found to stimulate a wide array of rabbit neutrophil functions such as: the transient auto-aggregation of these cells in suspension [11] and equally transient fall in circulating neutrophils when injected into rabbit veins (these responses result from an increase in ...
A white blood cell differential is a medical laboratory test that provides information about the types and amounts of white blood cells in a person's blood. The test, which is usually ordered as part of a complete blood count (CBC), measures the amounts of the five normal white blood cell types – neutrophils, lymphocytes, monocytes, eosinophils and basophils – as well as abnormal cell ...