Abstract:
:Aspirin (acetylsalicylic acid) is a well-known nonsteroidal anti-inflammatory drug that can potentiate some acute allergies and causes adverse immunological reactions collectively referred to as aspirin intolerance, a disorder that induces urticaria, asthma, and anaphylaxis in response to oral administration of the drug. Aspirin also potentiates some acute allergies such as food-dependent exercise-induced anaphylaxis (FDEIA), a food allergy induced by physical exercise. The anti-inflammatory actions as well as the adverse immunological effects have been thought to be primarily due to inhibition of cyclooxygenase activity. However, a growing body of evidence suggests that mechanisms unrelated to inhibition of prostaglandin synthesis are involved. One key feature of aspirin intolerance is the overproductions of cysteinyl leukotrienes (LTs), in which mast cells have been implicated to play a role. In this review, we provide an overview of our current knowledge about the regulatory mechanisms of LTC(4) secretion in mast cells and its modulation by aspirin, with a special emphasis on the role of Ca(2+) signals. We also introduced our recent findings that mast cells express dihydropyridine-sensitive L-type Ca(2+) channels (LTCCs) and that Ca(2+) channels of this kind mediate aspirin modulation of LTC(4) secretion in mast cells.
journal_name
J Pharmacol Scijournal_title
Journal of pharmacological sciencesauthors
Suzuki Y,Ra Cdoi
10.1254/jphs.08r32fmsubject
Has Abstractpub_date
2009-07-01 00:00:00pages
237-44issue
3eissn
1347-8613issn
1347-8648pii
JST.JSTAGE/jphs/08R32FMjournal_volume
110pub_type
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