Use of the microscreen phage‐induction assay to assess the genotoxicity of 14 hazardous industrial wastes

Environmental and Molecular Mutagenesis - Tập 11 Số 1 - Trang 13-29 - 1988
Virginia S. Houk1, David M. DeMarini1
1Genetic Toxicology Division, Health Effects Research Laboratory U.S. Environmental Protection Agency, Research Triangle Park, North Carolina

Tóm tắt

Abstract

The Microscreen phage‐induction assay, which quantitatively measures the induction of prophage λ in Escherichia coli WP2s(λ), was used to test 14 crude (unfractionated) hazardous industrial waste samples for genotoxic activity in the presence and absence of metabolic activation. Eleven of the 14 wastes induced prophage, and induction was observed at concentrations as low as 0.4 pg per ml. Comparisons between the ability of these waste samples to induce prophage and their mutagenicity in the Salmonella reverse mutation assay indicate that the phage‐induction assay detected genotoxic activity in all but one of the wastes that were mutagenic in Salmonella. Moreover, the Microscreen assay detected as genotoxic five additional wastes that were not detected in the Salmonella assay. The applicability of the Microscreen phage‐induction assay for screening hazardous wastes for genotoxic activity is discussed, as are some of the problems associated with screening highly toxic wastes containing toxic volatile compounds.

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Environmental and Molecular Mutagenesis

Tập 11 Số 1

13-29

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