Add time:09/05/2019         Source:sciencedirect.com

Cyclopenta-fused polycyclic aromatic hydrocarbons are a class of environmental PAH that have been recently identified. Many of these chemicals have been found to be more active than benzo[a]pyrene in tests for genetic toxicity using bacterial and rodent cells. Benz[l]aceanthrylene, a cyclopenta-polycyclic aromatic hydrocarbon related to benz[a]anthracene, and benzo[a]pyrene were compared for their activity to induce cytotoxicity and anchorage-independent growth with normal human diploid fibroblasts. Both benz[l]aceanthrylene and benzo[a]pyrene were relatively non-cytotoxic to normal human diploid fibbrolasts. However, benz[l]aceanthrylene was twice as active compared to benzo[a]pyrene over the concentration range examined as an inducer of anchorage-independent growth. The ability of benz[l]aceanthrylene to induce anchorage-independent colony growth in normal human cells, in combination with its demonstrated ability as a mouse-skin tumorigen, suggests this PAH to be a potential multi-species carcinogen.

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