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Contribution of Environmental Fibers to Respiratory Cancer
Gilbert S. Omenn, James Merchant, Edwin Boatman, John M. Dement, Marvin Kuschner, William Nicholson, Julian Peto and Linda Rosenstock
Environmental Health Perspectives
Vol. 70 (Dec., 1986), pp. 51-56
Published by: The National Institute of Environmental Health Sciences
Stable URL: http://www.jstor.org/stable/3430342
Page Count: 6
You can always find the topics here!Topics: Asbestos, Lung neoplasms, Disease risk, Mesothelioma, Recommendations, Dose response relationship, Dosage, Educational buildings, Cigarette smoking, Statistical estimation
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This article reviews studies of the carcinogenicity of mineral fibers, notably asbestos, and presents seven major recommendations for further research. Mineral fibers represent the greatest cause-after cigarette smoke-of respiratory cancer due to air pollutants. Past asbestos exposure may currently account for 2000 mesothelioma deaths per year and 4000 to 6000 lung cancer deaths per year. All major commercial types of asbestos (crocidolite, amosite, and chrysotile) can cause each of the major asbestos-related respiratory diseases. Lung cancers in asbestos-exposed individuals probably do not have a different distribution of histological types from that of non-asbestos-related lung cancers. Nonoccupational exposures are likely to be associated with malignant disease outcomes qualitatively similar to those associated with occupational exposures. Further investigations of fibers are needed to characterize the relationships among physicochemical properties, patterns of migration and clearance, dose, and adverse health effects. Transmission electron microscopy has been found to be the preferred method of analysis of environmental fibers. Relations among time factors (e.g., age at first exposure), dose, and risk for adverse health effects require analyses of existing and new epidemiologic studies of exposed cohorts. Concomitant exposures, behavioral factors, and host factors affecting susceptibility to asbestos should be identified.
Environmental Health Perspectives © 1986 The National Institute of Environmental Health Sciences