Published by Misasa Medical Center, Okayama University Medical School
Published by Misasa Medical Center, Okayama University Medical School

<Formerly known as>
岡大三朝分院研究報告 (63号-72号) 環境病態研報告 (57号-62号)
岡山大学温泉研究所報告 (5号-56号) 放射能泉研究所報告 (1号-4号)

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Enhanced leukotriene generation adn bronchial hyperresponsiveness in asthmatics with allergic rhinitis

光延 文裕 岡山大学医学部・歯学部附属病院三朝医療センター 内科
保崎 泰弘 岡山大学医学部・歯学部附属病院三朝医療センター 内科
芦田 耕三 岡山大学医学部・歯学部附属病院三朝医療センター 内科
岩垣 尚史 岡山大学医学部・歯学部附属病院三朝医療センター 内科
藤井 誠 岡山大学医学部・歯学部附属病院三朝医療センター 内科
高田 真吾 岡山大学医学部・歯学部附属病院三朝医療センター 内科 
濱田 全紀 岡山大学医学部・歯学部附属病院三朝医療センター リハビリテーション科
谷崎 勝朗 岡山大学医学部・歯学部附属病院三朝医療センター 内科
抄録
Rhinitis frequently precedes asthma, and treating allergic rhinitis has benefi-cial effects on asthma, suggesting upper airway disease ia a risk factor for asthma. The aim of the present study was to investigate the influence of allergic rhinitis on se-rum IgE level, leukotriene generation by peripheral leukocytes, and bronchial hyperresponsiveness (BHR) to methacholine in patients with atopic asthma. Seventy-one asthmatic subjects (mean age, 59.5±12.5, years ; 37 women, 34 men) were recruited, and 48 asthmatics had allergic rhinitis and 23 asthmatics did not have allergic rhinitis. The log10 (Dmin) was significantly lower for those with allergic rhinitis than those with-out allergic rhinitis (P<0.05), implying that those with allergic rhinitis developed BHR to a greater degree than those without allergic rhinitis. LTC4 generation from periph-eral leukocytes was significantly greater for atopic astmatics with allergic rhinitis than those without allergic rhinitis (p<0.05). In contrast, the amount of LTB4 produced from peripheral leukocytes did not significantly differ between asthmatic patients with and without allergic rhinitis. These results suggest that the presence of allergic rhinitis enhances BHR by enhancing LTC4 production. while the presence of allergic rhinitis did not affect LTB4 production in patients with atopic asthma.
キーワード
asthma (気管支喘息)
allergic rhinitis (アレルギー性鼻炎)
leukotriene generation (ロイコトリエン産性能)
bronchial hyperresponsiveness (気道過敏性)
ISSN
1348-1258
NCID
AA11840279