[Toxicity studies of mild gasification products: Quarterly technical progress report, April--June 1993]

Technical Report · Fri Dec 31 04:00:00 EST 1993

DOI:https://doi.org/10.2172/10117563· OSTI ID:10117563

The major hypothesis of carcinogenesis is that malignancy is due to an alteration (mutation) of the genetic material in a somatic cell. Reactive electrophilic metabolites are generated from many chemicals by the action of endogenous mixed function oxidases. These reactive metabolites may bind to cellular macromolecules, such as DNA, and can, therefore, initiate a mutagenic or carcinogenic event. Prokaryotes and non-mammalian eukaryotes are used in mutation assays, while cultured mammalian cells are generally used for mutagenic as well as clastogenic tests examining alterations and damage to the DNA and/or chromosomes of somatic cells. One of the first mammalian cell lines used in genotoxicity studies is V79, which was derived from Chinese hamster lung cells. According to the test plan on toxicity studies of mild gasification products, mammalian cell in vitro assays are to be performed on selected samples displaying mutagenic activity in the Ames assay. The results of the Ames testing of the mild gasification sample IST {number_sign}10 indicate significant mutagenic activity. Hence, assays for the induction of gene mutation, sister chromatid exchange and micronucleus formation in V79 cells have been carried out for the sample. This paper reports the results of these assays.

• Research Organization: National Inst. for Occupational Safety and Health, Morgantown, WV (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AI21-89MC26018
• OSTI ID: 10117563
• Report Number(s): DOE/MC/26018--3562; ON: DE94005791
• Country of Publication: United States
• Language: English

Related Subjects

550200
560300
59 BASIC BIOLOGICAL SCIENCES
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
BIOCHEMISTRY
BIOLOGICAL PATHWAYS
BY-PRODUCTS
CARCINOGENESIS
CHEMICALS METABOLISM AND TOXICOLOGY
COAL GASIFICATION
CYTOLOGY
ENZYME ACTIVITY
GENE MUTATIONS
PROGRESS REPORT