Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Circulating Factors that Modify Lung Cell DNA Synthesis Following Exposure to Inhaled Oxidants. 1. Effect of Serum and Lavage on Lung Fibroblasts Following Exposure of Adult Rats to 1 ppm Ozone.
Author Tanswell, A. K. ; Fraher, L. J. ; Grose, E. C. ;
CORP Author Health Effects Research Lab., Research Triangle Park, NC. ;University of Western Ontario, London.
Publisher c1989
Year Published 1989
Report Number EPA/600/J-89/216;
Stock Number PB90-146143
Additional Subjects Deoxyribonucleic acids ; Lung ; Ozone ; Respiration ; Exposure ; Blood ; Cells(Biology) ; Oxidizers ; pH ; Bioassay ; Statistical analysis ; Reprints ; Bronchoalveolar lavage fluid ; Fibroblasts ; Isoelectric focusing ; High performance liquid chromatography
Library Call Number Additional Info Location Last
NTIS  PB90-146143 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/15/1990
Collation 18p
Adult rats were exposed to 1 ppm (1.96 mg/cu m) ozone or air for 2 weeks. Animals were sacrificed at 3, 5, 7, or 14 days after the onset of exposure and samples of plasma and lung lavage obtained. Heat inactivated plasma, from animals exposed to ozone for 7 or 14 days, significantly increased DNA synthesis by lung fibroblasts compared with plasma from air exposed animals. Fractionation of plasma and lavage samples indicated that the factor responsible had an isoelectric point of 6.45-6.75, and a molecular weight of 32 +/- 2 Kd. This factor has a dose-dependent effect on lung fibroblasts in culture, but no significant effect on cultured pneumocyte DNA synthesis. The factor is detectable within 72 hours of exposure, and may hold some promise as a marker of early oxidant lung injury. (Copyright (c) 1989, Hemisphere Publishing Corporation.)