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- W2088558753 abstract "Characterization of mediators and mechanisms of anaphylaxis will allow for more specific and effective treatment with fewer side effects. Recent studies have shown that platelet-activating factor (PAF) is a pivotal mediator of the life-threatening manifestations of anaphylaxis. The putative role of PAF in human anaphylaxis is based on a large body of evidence in experimental and human anaphylaxis. In animal models of anaphylaxis, intravenous administration of PAF reproduces the severe physiologic derangements of anaphylaxis. PAF receptor knock-out mice are resistant to experimental anaphylaxis. Data from human anaphylaxis show that levels of PAF increase proportionately with the severity of anaphylaxis, whereas a deficiency in the enzyme that inactivates PAF predisposes to severe or fatal anaphylaxis. Many of the biologic effects of PAF appear to be transduced by nitric oxide production. PAF receptor antagonists protect against the lethal effects of exogenous PAF, but, importantly, also protect against experimental anaphylaxis following allergen challenge. Mice treated with an enzyme that inactivates PAF are similarly resistant to anaphylaxis. Some clinically available medications for anaphylaxis act at different points of the PAF pathway. Epinephrine, the first-line treatment for anaphylaxis, appears to act in part by phosphorylation and inactivation of the PAF receptor, whereas methylene blue, which reduces the actions of nitric oxide, can reverse severe anaphylaxis that is refractory to conventional treatment. Taken together, these studies have shown that therapies targeting the PAF pathway might hold the potential for more specific and effective treatments for this potentially life-threatening condition." @default.
- W2088558753 created "2016-06-24" @default.
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- W2088558753 date "2014-05-15" @default.
- W2088558753 modified "2023-10-14" @default.
- W2088558753 title "Potential Therapeutic Strategies for Severe Anaphylaxis Targeting Platelet-Activating Factor and PAF Acetylhydrolase" @default.
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- W2088558753 doi "https://doi.org/10.1007/s40521-014-0020-2" @default.
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