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Immunotherapy Safety for the Primary Care ... - U.S. Coast Guard

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Pathophysiology<br />

• Activation of mast cells and basophils result in<br />

secretion of pre<strong>for</strong>med mediators, followed by<br />

syn<strong>the</strong>sis and secretion of lipid mediators and<br />

cytokines.<br />

– pre<strong>for</strong>med granule-associated substances =<br />

histamine, tryptase, chymase, carboxypeptidase, &<br />

cytokines<br />

– newly-generated lipid-derived mediators =<br />

prostaglandin D2, leukotriene (LT) B4, LTC4, LTD4,<br />

LTE4, & platelet activating factor.

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