INTRODUCTION Many studies on the biological effects of electric and magnetic fields have been conducted since Wertheimer and Leeper reported an association between wiring configuration and childhood cancer among residents in Denver, Colorado. The genetic effects, especially mutagenicity and carcinogenicity, of electromagnetic fields have also been studied experimentally with positive and negati...

The edible part of fresh Chinese radish was chopped into small pieces, lyophilized, and then extracted sequentially with hexane, chloroform, and methanol. The solvent in each fraction was removed by evaporation under reduced pressure at 50-55 degrees C, and the residue was dissolved in dimethylsufoxide just before being tested for antimutagenicity as well as mutagenicity using the Salmonella/ma...

AlkB repairs 1-alkyladenine and 3-methylcytosine lesions in DNA by directly reversing the base damage. Although repair studies with randomly alkylated substrates have been performed, the miscoding nature of these and related individually alkylated bases and the suppression of mutagenesis by AlkB within cells have not yet been explored. Here, we address the miscoding potential of 1-methyldeoxyad...

An evaluation of the mutagenicity and carcinogenicity of quinacrine.

Experimental studies on the complex process of mutagenesis are conducted in the belief that they will increase our understanding of the effects of environmental agents on human populations. Cultured mammalian cells offer distinct advantages over other biological systems for studying this problem. Mutagenesis in cultured mammalian cells is unquestionably more relevant to man than are bacterial, ...

Genotoxic responses (chromosomal damage, DNA strand breakage) of redbreast sunfish (Lepomis auritis) populations exposed to industrial effluent and mutagenicity of the associated sediments were determined in order to compare them to changes in community structure. Data were collected from a reference stream and East Fork Poplar Creek (EFPC), a first-order stream which originates on the grounds ...

The mechanisms of toxicity and, particularly, the potential carcinogenicity of inorganic mercury are still under debate. Results of mutagenicity and genotoxicity testing with mercury have been inconsistent: mercury induces DNA single-strand breaks at low concentrations in mammalian cells but has not proved mutagenic in several bacterial mutagenicity assays. We investigated the mutagenicity of s...