Full Record Display for the EPA National Library Catalog

RECORD NUMBER: 21 OF 25

OLS Field Name OLS Field Data
Main Title Rat Bladder Cell-Mediated Mutagenesis of Chinese Hamster V79 Cells and Metabolism of Benzo(a)Pyrene.
Author Langenbach, Robert ; Malick, Linda ; Nesnow, Stephen ;
CORP Author Health Effects Research Lab., Research Triangle Park, NC.
Year Published 1981
Report Number EPA-600/J-80-101;
Stock Number PB82-127382
Additional Subjects Carcinogens ; Toxicology ; Rats ; Cells(Biology) ; Metabolism ; Aromatic polycyclic hydrocarbons ; Hamsters ; Reprints ; Mutagenesis ; Benzopyrenes
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB82-127382 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 7p
Abstract Primary rat bladder epithelial cells were coculivated with Chinese hamster V79 cells in the presence of carcinogens, and the induction of 6-thioguanine resistance in the V79 cells was used as a marker of cell-mediated mutagenesis. The carcinogens dimethylnitrosamine, 7, 12-dimethylbenz(a)anthracene, and benzo(a)pyrene (BP) were mutagenic to V79 cells in the presence of bladder cells but not in their absence. Analysis of BP metabolites formed by bladder cells indicated that 7,8-dihydro-7,8-dihydroxybenzo(a)pyrene, 9,10-dihydro-9,10-dihydroxybenzo(a)pyrene, benzo(a)pyrene-3,6-quinone, and 9-hydroxybenzo(a)pyrene were the major organic-soluble metabolites formed. Glucuronide and sulfate conjugates of BP metabolites were also produced by bladder cells. Mutagenesis data from the rat bladder system and previous data from rat liver and lung cell-mediated mutagenesis systems indicate that the cell-mediated mutagenesis approach may provide a useful approach for studying the organotropic effect of chemical carcinogens. Furthermore the finding that rat bladder epithelium can metabolize some carcinogens offers new possibilities for the mechanism of initiation of bladder cancer.
Supplementary Notes Pub. in Jnl. of National Cancer Inst. v66 n5 p913-917 1981.
NTIS Title Notes Journal article.
Title Annotations Reprint: Rat Bladder Cell-Mediated Mutagenesis of Chinese Hamster V79 Cells and Metabolism of Benzo(a)Pyrene.
PUB Date Free Form Sep 81
Category Codes 6T; 57Y
NTIS Prices PC A02/MF A01
Primary Description 600/11
Document Type NT
Cataloging Source NTIS/MT
Control Number 323807617
Origin NTIS
Type CAT