Inhibition by fenoterol of human eosinophil functions including β2‐adrenoceptor‐independent actions

Inhibition by fenoterol of human eosinophil functions including β2‐adrenoceptor‐independent actions
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非诺特罗对人嗜酸性粒细胞功能的抑制,包括 β2 肾上腺素受体独立作用

DOI:
--
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发表时间:
2002
影响因子:
4.6
通讯作者:
A. Morikawa
A. Morikawa
中科院分区:
医学3区
文献类型:
--
作者:
A. Tachibana;M. Kato;H. Kimura;T. Fujiu;M. Suzuki;A. Morikawa

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β 2肾上腺素受体激动剂作为支气管扩张剂广泛应用于支气管哮喘的治疗。这些药物也可能对哮喘中的嗜酸性粒细胞具有重要的抗炎作用。我们检查了广泛使用的β 2-肾上腺素受体激动剂抑制刺激诱导的嗜酸性粒细胞效应功能(如超氧阴离子(O2-)产生和脱粒)的能力是否不同。为了研究细胞粘附在这种反应中的作用,我们还研究了β 2受体激动剂对细胞粘附和人嗜酸性粒细胞CD11b表达的影响。采用化学发光法测定O2-。嗜酸性粒细胞脱粒和粘附通过嗜酸性粒细胞蛋白X(EPX)放射免疫测定法进行评估。流式细胞术检测CD11b表达。与沙丁胺醇或丙卡特罗相比,非诺特罗对血小板活化因子(PAF)诱导的嗜酸性粒细胞产生O2的抑制作用显著更强。与沙丁胺醇或丙卡特罗相似,非诺特罗部分抑制PAF诱导的嗜酸性粒细胞脱粒。非诺特罗抑制佛波酯肉豆蔻酸酯乙酸酯(PMA)诱导的O2生成和嗜酸性粒细胞的脱粒,而沙丁胺醇或丙卡特罗则没有。选择性β 2-肾上腺素受体拮抗剂ICI-118551未逆转非诺特罗对PMA诱导的O2生成的抑制作用。非诺特罗(而非沙丁胺醇或丙卡特罗)可显著抑制PAF诱导的嗜酸性粒细胞粘附。非诺特罗比沙丁胺醇或丙卡特罗更有效地抑制O2生成和脱粒;这些作用可能包括涉及细胞粘附的成分。抑制还可能包括不通过β 2肾上腺素受体介导的组分。
Agonists at β2 adrenoceptors are used widely as bronchodilators in treating bronchial asthma. These agents also may have important anti‐inflammatory effects on eosinophils in asthma. We examined whether widely prescribed β2‐adrenoceptor agonists differ in ability to suppress stimulus‐induced eosinophil effector functions such as superoxide anion (O2–) generation and degranulation. To examine involvement of cellular adhesion in such responses, we also investigated effects of β2 agonists on cellular adhesion and on CD11b expression by human eosinophils. O2– was measured using chemiluminescence. Eosinophil degranulation and adhesion were assessed by a radioimmunoassay for eosinophil protein X (EPX). CD11b expression was measured by flow cytometry. Fenoterol inhibited platelet‐activating factor (PAF)‐induced O2– generation by eosinophils significantly more than salbutamol or procaterol. Fenoterol partially inhibited PAF‐induced degranulation by eosinophils similarly to salbutamol or procaterol. Fenoterol inhibited phorbol myristate acetate (PMA)‐induced O2– generation and degranulation by eosinophils, while salbutamol or procaterol did not. Fenoterol inhibition of PMA‐induced O2– generation was not reversed by ICI‐118551, a selective β2‐adrenoceptor antagonist. Fenoterol, but not salbutamol or procaterol, significantly inhibited PAF‐induced eosinophil adhesion. Fenoterol inhibited O2– generation and degranulation more effectively than salbutamol or procaterol; these effects may include a component involving cellular adhesion. Inhibition also might include a component not mediated via β2 adrenoceptors.
DOI: --
发表时间: 1991
期刊: Journal of immunology (Baltimore, Md. : 1950)
影响因子: --
作者:
Graham,IL;Brown,EJ
通讯作者: Brown,EJ
β2 整合素在 IgG 刺激的嗜酸性粒细胞活化中发挥着至关重要的作用。
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发表时间: 1995
期刊: Journal of immunology (Baltimore, Md. : 1950)
影响因子: --
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腺苷 3,5-环单磷酸调节 Ig 诱导的嗜酸性粒细胞脱颗粒。
DOI: --
发表时间: 1991
期刊: Journal of immunology (Baltimore, Md. : 1950)
影响因子: --
作者:
Kita,H;Abu-Ghazaleh,RI;Gleich,GJ;Abraham,RT
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甲酰基-甲硫氨酸-亮氨酸-苯丙氨酸的β肾上腺素能调节刺激嗜酸性粒细胞过氧化物酶和白三烯C4的分泌。
DOI: --
发表时间: 1994
期刊: The Journal of pharmacology and experimental therapeutics
影响因子: --
作者:
Munoz,NM;Vita,AJ;Neeley,SP;McAllister,K;Spaethe,SM;White,SR;Leff,AR
通讯作者: Leff,AR
DOI: --
发表时间: 1986
影响因子: 21.1
作者:
Abdel-Latif,AA
通讯作者: Abdel-Latif,AA