The generation of leukobienes B4 (LTB4) and C4 (LTC4) and bronchial hyperresponsiveness in patients with asthma and spa therapy

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Changes in the generation of leukotrienes B4 (LTB4) and C4 (LTC4) by leucocytes after spa therapy were examined in 30 patients with asthma. 1. The efficacy of spa therapy was marked in 8 (26.7%), and moderate in 16 (53.3%) of 30 patients with asthma, and slight or no efficacy of the therapy was observed in the residual 6 patients (20.0%). 2. Bronchial reactivity to methacholine was the highest in patients with slight or no efficacy of spa therapy, however. there were no significant differences among the three groups classified by clinical efficacy. 3. The generation of LTC4 was significantly higher in patients with slight or no efficacy compared with the generation in those with marked (p<O. 01) and moderate efficacy (p<O. 001). However, there were no signifcant differences in the generation of LTB4 among them. 4. The generation of LTC4 signifcantly decreased in patients with marked and moderate efficacy after spa therapy. but not in those with slight or no efficacy. The generation of LTB4 was not significantly different before and after spa therapy among patients with marked, moderate, and slight or no efficacy. These results show that the efficacy of spa therapy for patients with asthma is closely related to the generation of LTC4 by leucocytes.

気管支喘息30例を対象に,温泉療法によるロイコトリエンB4 (LTB4),C4 (LTC4)産生の変動および気道過敏性と臨床効果との関連について検討を加えた｡　 1.温泉療法の臨床効果は,著効8例(26.7%),有効16例(53.3%),やや有 効あるいは無効6例(20.0%)であった｡　 2.メサコリンに対する気道過敏性は,やや有効あるいは無効例で高い傾向が見られたが,著効,有効例と比べ有意の差は見られなかった。 3.LTC4産生はやや有効あるいは無効例において著効例(P<0.01)や有効例(P<0.001)に比べ有意に高い値が示された｡しかし,LTB4産生では臨床効果との関連は見られなかった｡　 4.著効例および有効例では,温泉療法後にLTB4産生の有意の低下 傾向が見られたが,無効例では有意の変動は見られなかった.また,LTB4産生に関しては温泉療法の臨床効果にかかわらず有意の変動は見られなかった｡これらの結果より,気管支喘息に対する温泉療法の臨床効果は,LTC4産生とある程度関連していることを示唆しているものと考えられる｡

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