INVOLVEMENT OF ARACHIDONATE CYCLOOXYGENASE PRODUCTS IN BRONCHIAL HYPERRESPONSIVENESS INDUCED BY SUBTHRESHOLD CONCENTRATION OF AEROSOLIZED THROMBOXANE-A2 ANALOG (STA2) IN GUINEA-PIGS

被引：8

作者：

SAITO, M

FUJIMURA, M

SAKAMOTO, S

MIYAKE, Y

SHINTANI, H

YASUI, M

MATSUDA, T

机构：

[1] The Third Department of Internal Medicine, Kanazawa University School of Medicine

来源：

ALLERGY | 1992年 / 47卷 / 02期

关键词：

BRONCHIAL HYPERRESPONSIVENESS; CYCLOOXYGENASE PATHWAY; GUINEA PIG; HISTAMINE; INDOMETHACIN; OKY-046; STA2; THROMBOXANE-A2;

D O I：

10.1111/j.1398-9995.1992.tb00961.x

中图分类号：

R392 [医学免疫学];

学科分类号：

100102 ;

摘要：

Effects of a thromboxane synthetase inhibitor (OKY-046) and a cyclooxygenase inhibitor (indomethacin) on bronchial hyperresponsiveness induced by subthreshold concentration of aerosolized thromboxane A2 analogue (STA2) were investigated in anesthetized, artificially ventilated guinea pigs in order to examine the role of the cyclooxygenase pathway in bronchial hyperresponsiveness. Pretreatment with aerosolized OKY-046 significantly inhibited the bronchial hyperresponsiveness to histamine, but pretreatment with intravenous indomethacin showed a tendency to potentiate bronchial hyperresponsiveness. These results suggest that subthreshold concentration of thromboxane A2 contributes to bronchial hyperresponsiveness through activating the cyclooxygenase pathway including thromboxane A2 synthesis, and that the released cyclooxygenase products have an inhibitory effect on the bronchial hyperresponsiveness in guinea pigs.

引用

页码：181 / 184

页数：4

共 13 条

[1] BRONCHOCONSTRICTIVE PROPERTIES AND POTENTIATING EFFECT ON BRONCHIAL RESPONSIVENESS OF INHALED THROMBOXANE-A2 ANALOG (STA2) IN GUINEA-PIGS [J].