NIOSHTIC-2 Publications Search

In vitro tests for workplace cocarcinogens.

Authors
Barfknecht TR; Hall ME
Source
Cincinnati, OH: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control, National Institute for Occupational Safety and Health, Contract 200-82-2545, 1984 May; :1-266
Link
NIOSHTIC No.
00134918
Abstract
An in-vitro study of known carcinogens was conducted. Compounds were evaluated for their ability to inhibit metabolic cooperation in an assay system consisting of wild type and mutant (HGPRT-) Chinese-V- 79-hamster cells. Mezerein (34807415), and 12-O- tetradecanoylphorbol-13-acetate (544638) strongly inhibited metabolic cooperation. Sodium-saccharin (128449), sodium- phenobarbital (57307), phorbol (17673255), butylated-hydroxytoluene (128370), butylated-hydroxyanisole (25013165), tert-butyl- hydroperoxide (75912), hydrogen-peroxide (7722841), benzoyl-peroxide (94360), and 2,4-dinitrofluorobenzene (70348) did not inhibit metabolic cooperation. Sodium-cyclamate (139059), tryptophan (153946), and amobarbital (57432) showed ambiguous or weakly positive results. The authors conclude that from comparison of results with those of in-vivo cancer bioassays, the Chinese-V-79- hamster cell assay system correctly identifies tumor promoting ability. The system is most effective in detecting known skin cancer promoters; however, the rate of false negative results is high (50 percent). Further research is recommended to improve the assay system so it can detect weak and non skin tumor promoters and to reduce the number of false negative responses.
Keywords
NIOSH-Contract; Carcinogenicity; In-vitro-studies; Clinical-chemistry; Animal-studies; Bioassays; Chemical-properties; Biological-effects; Biochemical-tests; Metabolic-study
CAS No.
34807-41-5; 544-63-8; 128-44-9; 57-30-7; 17673-25-5; 128-37-0; 25013-16-5; 75-91-2; 7722-84-1; 94-36-0; 70-34-8; 139-05-9; 153-94-6; 57-43-2
Publication Date
19840510
Document Type
Final Contract Report
Funding Type
Contract
Fiscal Year
1984
NTIS Accession No.
PB84-243500
NTIS Price
A13
Identifying No.
Contract-200-82-2545
NIOSH Division
DBBS
Source Name
National Institute for Occupational Safety and Health
State
OH
Page last reviewed: July 24, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division