An in vitro system for exposure of lung cells to gases: effects of ozone on rat macrophages.

An in vitro system for exposure of lung cells to gases: effects of ozone on rat macrophages.
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将肺细胞暴露于气体的体外系统:臭氧对大鼠巨噬细胞的影响。

DOI:
10.1080/15287398509530723
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发表时间:
1985
期刊:
Journal of toxicology and environmental health
影响因子:
--
通讯作者:
Valentine,R
Valentine,R
中科院分区:
--
文献类型:
--
作者:
Valentine,R

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开发了一种用于体外肺细胞暴露于气体的测试系统。使用暴露系统评价臭氧(O3)对通过支气管肺泡灌洗从Sprague-道利大鼠获得的肺泡巨噬细胞(PAM)的损伤。臭氧暴露在温度受控的不锈钢和有机玻璃室内进行,室内装有固定在旋转倾斜平台上的玻璃培养皿。通过以1 rpm旋转平台以使PAM单层交替暴露于培养基和O3来完成细胞暴露。该系统提供稳定的含O3气氛,并允许在三种O3浓度下同时进行体外暴露。在体外暴露的PAM单层细胞2小时,室浓度范围从0.2至6.1 ppm O3与一个显着的,浓度相关的减少乳胶珠吞噬旋转PAM文化。相比之下,PAM类似地暴露在水平放置的非旋转培养皿中,并覆盖有静止的介质层(1.5 mm深),不受影响。其他参数的细胞功能,包括PAM的活力和粘附,未发生变化相比,未暴露或水平,非旋转的控制。无法观察到不良影响之间的非旋转文化是一致的受损扩散O3通过相对较厚的媒体覆盖在静止的文化。体外系统提供了一个现实的模拟肺细胞暴露于O3,并代表了一个有用的模型来研究气体对培养细胞的毒性。
A test system was developed for the in vitro exposure of lung cells to gases. The exposure system was used to evaluate ozone (O3) injury to pulmonary alveolar macrophages (PAM) obtained from Sprague‐Dawley rats by bronchopulmonary lavage. Ozone exposures were conducted within temperature‐controlled stainless‐steel and Plexiglas chambers that contained glass petri dishes affixed to a revolving, inclined platform. Cell exposures were accomplished by rotation of the platform at 1 rpm to alternately expose PAM monolayers to culture media and O3. The system provided stable, O3‐containing atmospheres and permitted simultaneous in vitro exposures at three O3concentrations. In vitro exposure of PAM monolayers for 2 h at chamber concentrations ranging from 0.2 to 6.1 ppm O3was associated with a significant, concentration‐related reduction of latex‐bead phagocytosis in rotated PAM cultures. In contrast, PAM that were similarly exposed in nonrotated dishes placed horizontally and covered with o stationary layer of media (1.5 mm depth) were not affected. Other parameters of cell function, including PAM viability and adherence, were unchanged compared to unexposed or horizontal, nonrotated controls. The inability to observe adverse effects among the nonrotated cultures is consistent with the impaired diffusion of O3through the comparatively thick media overlay in stationary cultures. The in vitro system provides a realistic simulation of lung cell exposure to O3and represents a useful model to study the toxicity of gases on cultured cells.
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