Corticosteroid administration modifies ozone-induced increases in sheep airway blood flow.

Corticosteroid administration modifies ozone-induced increases in sheep airway blood flow.
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皮质类固醇给药可以改变臭氧引起的绵羊气道血流量的增加。

DOI:
10.1164/ajrccm/146.3.660
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发表时间:
1992
期刊:
The American review of respiratory disease
影响因子:
--
通讯作者:
Cross,CE
Cross,CE
中科院分区:
--
文献类型:
--
作者:
Gunther,RA;Yousef,MA;Schelegle,ES;Cross,CE

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最近我们已经证明,将插管清醒的绵羊暴露于3至4ppm臭氧(O3)中3小时可增加支气管血流量(Qbr)。本研究的目的是评估皮质类固醇在调节这种增加中的潜在作用。将6只经鼻插管的绵羊暴露于经过滤的室内空气中,3.5ppm0 - 3分两次暴露,3.5ppm0 - 3加甲基强的松,持续3 h。使用长期植入的20 MHz脉冲多普勒血流探头测量Qbr。Qbr.平均主动脉压、心输出量、肺动脉压你...动脉血气分析和核心温度进行监测。经3.5ppm0 3处理3 h后,Qbr由3.2± 0.5(平均值)增加到3.2± 0.5(平均值
Recently. we have shown that exposure of Intubated conscious sheep to 3 to 4 ppm ozone (03) for 3 h Increases bronchial blood flow (Qbr). The purpose of the present study was to assess the potential role of corticosteroids In modulating this Increase. Six naaally Intubated sheep were exposed to filtered room air, 3.5 ppm 0 3 on two separate occaslons, and 3.5 ppm 0 3 plus methylprednisone, for 3 h. Qbr was measured using a chronically Implanted 20 MHz pulsed Doppler flow probe. Qbr. mean aortic pressure, cardiac output, pulmonary artery p..... u.... arterial blood ga.... and core temperature were monitored. After 3 h of 3.5 ppm 0 3, Qbr Increased from 3.2±0.5 (mean
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