Abstract
Groups of rats were exposed by inhalation to atmospheres containing a refractory alumina fibre (Saffil Fibres, I.C.I.) either as manufactured or in a thermally aged form. Similar groups were exposed to UICC chrysotile A asbestos or clean air to serve as positive and negative controls respectively. Exposures continued for 86 weeks after which the animals were maintained to 85% mortality. Pulmonary reaction to both forms of alumina fibre was minimal; chrysotile asbestos provoked the expected progressive fibrosis. Pulmonary tumours (both benign and malignant) were confined to rats dosed with asbestos. The results support the predicted inert nature of these alumina fibres.
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- Assuncao J., Corn M. The effects of milling on diameters and lengths of fibrous glass and chrysotile asbestos fibers. Am Ind Hyg Assoc J. 1975 Nov;36(11):811–819. doi: 10.1080/0002889758507347. [DOI] [PubMed] [Google Scholar]
- Beckett S. T. The generation and evaluation of UICC asbestos clouds in animal exposure chambers. Ann Occup Hyg. 1975 Dec;18(3):187–198. doi: 10.1093/annhyg/18.3.187. [DOI] [PubMed] [Google Scholar]
- Burke W. A., Esmen N. The inertial behavior of fibers. Am Ind Hyg Assoc J. 1978 May;39(5):400–405. doi: 10.1080/0002889778507778. [DOI] [PubMed] [Google Scholar]
- Davis J. M., Beckett S. T., Bolton R. E., Collings P., Middleton A. P. Mass and number of fibres in the pathogenesis of asbestos-related lung disease in rats. Br J Cancer. 1978 May;37(5):673–688. doi: 10.1038/bjc.1978.105. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Stanton M. F., Laynard M., Tegeris A., Miller E., May M., Kent E. Carcinogenicity of fibrous glass: pleural response in the rat in relation to fiber dimension. J Natl Cancer Inst. 1977 Mar;58(3):587–603. doi: 10.1093/jnci/58.3.587. [DOI] [PubMed] [Google Scholar]
- Timbrell V., Gibson J. C., Webster I. UICC standard reference samples of asbestos. Int J Cancer. 1968 May 15;3(3):406–408. doi: 10.1002/ijc.2910030312. [DOI] [PubMed] [Google Scholar]
- Timbrell V. Human exposure to asbestos: dust controls and standards. The inhalation of fibrous dusts. Ann N Y Acad Sci. 1965 Dec 31;132(1):255–273. doi: 10.1111/j.1749-6632.1965.tb41107.x. [DOI] [PubMed] [Google Scholar]
- Timbrell V., Hyett A. W., Skidmore J. W. A simple dispenser for generating dust clouds from standard reference samples of asbestos. Ann Occup Hyg. 1968 Oct;11(4):273–281. doi: 10.1093/annhyg/11.4.273. [DOI] [PubMed] [Google Scholar]
- Wagner J. C., Berry G., Skidmore J. W., Timbrell V. The effects of the inhalation of asbestos in rats. Br J Cancer. 1974 Mar;29(3):252–269. doi: 10.1038/bjc.1974.65. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Wright G. W., Kuschner M. The influence of varying lengths of glass and asbestos fibres on tissue response in guinea pigs. Inhaled Part. 1975 Sep;4(Pt 2):455–474. [PubMed] [Google Scholar]