Publications by authors named "S L Smith-Roe"

Botanicals have long been used to promote health and treat diseases, but the safety of many currently marketed botanicals has not been adequately evaluated. Given the chemical complexity of botanicals, which often contain numerous unknown constituents, and their widespread use, comprehensive toxicity assessments are needed. The Botanical Safety Consortium was established to address this challenge.

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Polycyclic aromatic hydrocarbons (PAHs) are common environmental pollutants that originate from the incomplete combustion of organic materials. We investigated the clastogenicity and mutagenicity of benzo[]fluoranthene (BbF), one of 16 priority PAHs, in MutaMouse males after a 28 day oral exposure. BbF causes robust dose-dependent increases in micronucleus frequency in peripheral blood, indicative of chromosome damage.

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Unlabelled: Polycyclic aromatic hydrocarbons (PAHs) are common environmental pollutants that originate from the incomplete combustion of organic materials. We investigated the clastogenicity and mutagenicity of benzo[ ]fluoranthene (BbF), one of 16 priority PAHs, in MutaMouse males after a 28-day oral exposure. BbF causes robust dose-dependent increases in micronucleus frequency in peripheral blood, indicative of chromosome damage.

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Article Synopsis
  • Duplex sequencing (DS) is a precise method that uses molecular barcodes to trace PCR copies back to their original DNA, allowing for effective error correction in sequencing results.
  • TwinStrand Biosciences has created a DS-based assay to examine genetic mutations in rats for toxicity testing, using a time-course study with ENU exposure.
  • Results showed significant increases in mutation frequency in rats' stomach and bone marrow as early as 24 hours post-exposure, establishing a specific mutational signature across different tissues, indicating the assay's effectiveness and reproducibility in assessing mutagenesis.
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