Abstract:
:We evaluated roles of kinins in allergen-induced nasal blockage and sneezing, and development of nasal hyperresponsiveness to leukotriene D4 in a Japanese cedar pollen-induced allergic rhinitis model of guinea pigs. Sensitised guinea pigs were repeatedly challenged by pollen inhalation once every week. Neither a bradykinin B1 receptor antagonist, des-Arg9-[Leu8]bradykinin nor a bradykinin B2 receptor antagonist, icatibant suppressed allergen-induced sneezing and nasal blockage. However, development of nasal hyperresponsiveness to leukotriene D4 was significantly suppressed by them. The amount of bradykinin in nasal cavity lavage fluid was immediately increased after the challenge. In non-sensitised animals, hyperresponsiveness to leukotriene D4 was developed by a bradykinin B2 receptor agonist, bradykinin, but not by a bradykinin B1 receptor agonist, des-Arg10-kallidin, while in the sensitised-challenged animal, both agonists developed hyperresponsiveness. In conclusion, the nasal hyperresponsiveness appeared to be induced by kinins produced in response to the antigen challenge through activation of not only bradykinin B2 but also B1 receptors.
journal_name
Eur J Pharmacoljournal_title
European journal of pharmacologyauthors
Sugahara S,Nabe T,Mizutani N,Takenaka H,Kohno Sdoi
10.1016/s0014-2999(03)02185-xkeywords:
subject
Has Abstractpub_date
2003-08-29 00:00:00pages
229-37issue
3eissn
0014-2999issn
1879-0712pii
S001429990302185Xjournal_volume
476pub_type
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journal_title:European journal of pharmacology
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