Thromboxane biosynthesis in allergen-induced bronchospasm. Evidence for platelet activation.

Thromboxane biosynthesis in allergen-induced bronchospasm. Evidence for platelet activation.
复制标题

过敏原诱导的支气管痉挛中的血栓素生物合成。

DOI:
10.1164/ajrccm/140.4.932
复制
发表时间:
1989
期刊:
The American review of respiratory disease
影响因子:
--
通讯作者:
Fitzgerald,GA
Fitzgerald,GA
中科院分区:
--
文献类型:
--
作者:
Lupinetti,MD;Sheller,JR;Catella,F;Fitzgerald,GA

文献摘要

参考文献

被引文献

相似文献

为了确定过敏性哮喘患者吸入过敏原后是否发生血小板活化,我们采用灵敏、特异的气相色谱-负离子化学电离-质谱技术,测定了血小板主要环氧合酶产物血栓烷A2(TxA 2)的两种尿代谢产物。7名特应性哮喘患者在服用低剂量阿司匹林抑制血小板血栓素生成后和安慰剂治疗后接受过敏原激发。在安慰剂治疗日,尿2,3-二去甲-TxB 2水平从76 ± 22 pg/mg肌酐增加到216 ± 95 pg/mg肌酐,尿11-脱氢-TxB 2水平从396 ± 98增加到627 ± 137 pg/mg肌酐(p < 0.05)。低剂量阿司匹林抑制尿血栓素代谢产物的排泄,并防止过敏原吸入后升高,而不改变支气管收缩。这种阿司匹林方案未改变前列腺素代谢产物2,3-二去甲-6-酮-PGF 1 α的排泄。我们的结论是,血小板活化后过敏原的挑战,但血小板衍生的TxA 2是不重要的早期支气管收缩反应。
To determine if platelet activation occurs after allergen inhalation in atopic asthmatics, we measured two urinary metabolites of the principal cyclooxygenase product of platelets, thromboxane A2(TxA2), using the sensitive and specific technique of gas chromatography-negative ion, chemical ionization-mass spectrometry. Seven atopic asthmatics underwent allergen challenge after low dose aspirin to suppress platelet thromboxane generation and on placebo days. On placebo days, the urinary levels of 2,3-dinor-TxB2increased from 76 ± 22 pg/mg creatinine to 216 ± 95 after allergen, and 11-dehydro-TxB2from 396 ± 98 to 627 ± 137 (p < 0.05). Low dose aspirin suppressed excretion of urinary thromboxane metabolites and prevented the rise after allergen inhalation without altering the bronchoconstriction. Excretion of 2,3-dinor-6-keto-PGF1α, a metabolite of prostacy-clin, was unaltered by this aspirin regimen. We conclude that platelets are activated after allergen challenge, but that platelet-derived TxA2is not important in the early bronchoconstrictor response.
血栓素 B2 的放射免疫测定。
DOI: 10.1016/0003-2697(77)90127-0
发表时间: 1977
影响因子: --
作者:
F. Fitzpatrick;Robert R. Gorman;J. C. M. Guire;Robert C. Kelly;M. Wynalda;F. F. Sun
通讯作者: F. F. Sun
未被发现的乳腺癌的患病率和持续时间
DOI: --
发表时间: 1975
期刊: The Lancet
影响因子: --
作者:
Alwyn Smith;I. Leck
通讯作者: I. Leck
quin2 测定的胞质 [Ca2] 与汗液分泌之间的关系。
DOI: 10.1152/ajpcell.1988.254.2.c310
发表时间: 1988
期刊: The American journal of physiology
影响因子: --
作者:
Sato,K;Sato,F
通讯作者: Sato,F