Cheryl Hayden

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OBJECTIVE To determine the potential for asphalt fume exposure to increase DNA damage, we conducted a cross-sectional study of roofers involved in the application of roofing asphalt. METHODS DNA strand breaks and the ratio of 8-hydroxydeoxyguanosine (8-OHdG) to 2-deoxyguanosine (dG) were measured in peripheral blood leukocytes of roofers. In addition,(More)
Background: Prognostic factors are used routinely in the management of breast cancer. However, their potential for identifying precursor malignant lesions has not been assessed. Methods: We have examined 285 breast biopsy specimens (140 benign, 145 malignant) for DNA ploidy, S-phase fraction, Ki-67 nuclear antigen proliferative indices, and HER-2/neu and(More)
We have compared wheelchair exercise performed at submaximal levels in a continuous versus discontinuous format. There was a positive linear relationship between heart rate, systolic blood pressure, and VO2 with increasing workload. This was true for both modes of testing with no significant difference in heart rate, systolic blood pressure, VO2, Ve, or(More)
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