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Presence of Stable Coal Radicals in Autopsied Coal Miners' Lungs and Its Possible Correlation to Coal Workers' Pneumoconiosis

Dalal, N. S., Jafari, B., Petersen, M., Green, F. H. Y., Vallyathan, V.·1991·Archives of Environmental Health: An International Journal
DOI 10.1080/00039896.1991.9934404
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Abstract

Stable coal radicals (SCRs) were detected by electron spin resonance (ESR) spectroscopy in the lung tissue of autopsied coal miners. The SCR concentrations were measured in the lung tissues from 98 coal miners with and without (a) coal workers' pneumoconiosis (CWP), (b) cancer, and (c) a history of cigarette smoking. Concentrations of SCRs were also determined in the lungs of nonminer controls. The SCR concentration was related to longer mining tenure, CWP disease severity, lung cancer, and cigarette smoking. The mean concentration of SCRs in the lung tissues of miners with 30 +/- 1.4 y of coal mining exposure was 5.3 +/- 1.3 x 10(17) spins/g versus controls who had a nondetectable level (less than 10(15) spins/g). An increase in disease severity was accompanied by a progressive increase in SCR concentration. A SCR concentration of 4.8 +/- 0.7 x 10(17) spins/g was found for simple CWP (with moderate coal macules) versus 7.8 +/- 4.6 spins/g lung tissue for complicated CWP (with progressive massive fibrosis). Significantly higher (i.e., 10 x 10(17] concentrations of SCR in the coal miners' lung tissues were associated with an exposure history in the anthracite regions of northeastern Pennsylvania. These results indicate a possible role for SCRs in the disease process. Furthermore, ESR appears to be an adequate methodology for the quantitation of coal dust retained in the lung and for distinguishing exposures to anthracite and/or bituminous coal.

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Research works printed but not linked: 23

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Authors
Dalal, N. S., Jafari, B., Petersen, M., Green, F. H. Y., & Vallyathan, V.
Venue
Archives of Environmental Health: An International Journal
Publisher
Informa UK Limited
Published
1991-12
Volume
46
Issue
6
Pages
366-372
ISSN
0003-9896
DOI
10.1080/00039896.1991.9934404
Cited by
39
References
0
Language
en

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