期刊
INHALATION TOXICOLOGY
卷 20, 期 1, 页码 63-73出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/08958370701665566
关键词
-
类别
In an earlier report, Platek et al. ( 1985) presented the results of an 18-month inhalation exposure of rats and monkeys to short chrysotile asbestos. The mean chamber exposure level was 1.0 mg/ m(3) with an average of 0.79 fibers/ ml > 5 mu m in length. Gross and histopathological examination of exposed and control rats indicated no treatment-related lesions. Asbestos bodies adjacent to the terminal bronchioles, but no fibrosis, were found in lung biopsy tissue taken from the exposed monkeys at 10 months post-exposure. Fifteen monkeys ( 9 exposed and 6 controls) from this study were maintained for 11.5 years following exposure. Lung fiber burdens were determined by transmission electron microscopy. The mean lung burden ( +/- standard deviation) for 59 samples from exposed monkeys was 63 +/- 30 x 10(6) fibers/ g dry lung ( range, 18-139 x 10(6)). The geometric mean fiber length was 3.5 mu m with 35% of the fibers being > 5 mu m in length. These data indicate some chrysotile fibers are durable in vivo for a significant period of time. Lungs were examined grossly and microscopically. No lesions attributable to the inhalation exposure were noted. Asbestos bodies were seen in the lungs of treated monkeys, primarily in the interstitium near bronchioles or small pulmonary blood vessels ( which also may have been near to bronchioles just out of the plane of section).
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据