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    Cardiovascular effects in patrol officers are associated with fine particulate matter from brake wear and engine emissions

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    Author
    Riediker, Michael; Devlin, Robert B.; Griggs, Thomas R.; Herbst, Margaret C.; Bromberg, Philip A.; Williams, Ronald W.; Cascio, Wayne E.
    Abstract
    Background: Exposure to fine particulate matter air pollutants (PM2.5) affects heart rate variability parameters, and levels of serum proteins associated with inflammation, hemostasis and thrombosis. This study investigated sources potentially responsible for cardiovascular and hematological effects in highway patrol troopers. Results: Nine healthy young non-smoking male troopers working from 3 PM to midnight were studied on four consecutive days during their shift and the following night. Sources of in-vehicle PM2.5 were identified with variance-maximizing rotational principal factor analysis of PM2.5- components and associated pollutants. Two source models were calculated. Sources of in-vehicle PM2.5 identified were 1) crustal material, 2) wear of steel automotive components, 3) gasoline combustion, 4) speed-changing traffic with engine emissions and brake wear. In one model, sources 1 and 2 collapsed to a single source. Source factors scores were compared to cardiac and blood parameters measured ten and fifteen hours, respectively, after each shift. The "speed-change" factor was significantly associated with mean heart cycle length (MCL, +7% per standard deviation increase in the factor score), heart rate variability (+16%), supraventricular ectopic beats (+39%), % neutrophils (+7%), % lymphocytes (-10%), red blood cell volume MCV (+1%), von Willebrand Factor (+9%), blood urea nitrogen (+7%), and protein C (-11%). The "crustal" factor (but not the "collapsed" source) was associated with MCL (+3%) and serum uric acid concentrations (+5%). Controlling for potential confounders had little influence on the effect estimates. Conclusion: PM2.5 originating from speed-changing traffic modulates the autonomic control of the heart rhythm, increases the frequency of premature supraventricular beats and elicits proinflammatory and pro-thrombotic responses in healthy young men. Originally published Particle and Fibre Toxicology, Vol. 1, No. 2, Dec 2004
    URI
    http://hdl.handle.net/10342/3384
    Subject
     Fine particulate matter; Air pollutants; Cardiovascular effects; Highway patrol troopers 
    Date
    2004-12-09
    Citation:
    APA:
    Riediker, Michael, & Devlin, Robert B., & Griggs, Thomas R., & Herbst, Margaret C., & Bromberg, Philip A., & Williams, Ronald W., & Cascio, Wayne E.. (December 2004). Cardiovascular effects in patrol officers are associated with fine particulate matter from brake wear and engine emissions. Particle and Fibre Toxicology, 1(2), 1- 10. Retrieved from http://hdl.handle.net/10342/3384

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    MLA:
    Riediker, Michael, and Devlin, Robert B., and Griggs, Thomas R., and Herbst, Margaret C., and Bromberg, Philip A., and Williams, Ronald W., and Cascio, Wayne E.. "Cardiovascular effects in patrol officers are associated with fine particulate matter from brake wear and engine emissions". Particle and Fibre Toxicology. 1:2. (1-10), December 2004. September 27, 2023. http://hdl.handle.net/10342/3384.
    Chicago:
    Riediker, Michael and Devlin, Robert B. and Griggs, Thomas R. and Herbst, Margaret C. and Bromberg, Philip A. and Williams, Ronald W. and Cascio, Wayne E., "Cardiovascular effects in patrol officers are associated with fine particulate matter from brake wear and engine emissions," Particle and Fibre Toxicology 1, no. 2 (December 2004), http://hdl.handle.net/10342/3384 (accessed September 27, 2023).
    AMA:
    Riediker, Michael, Devlin, Robert B., Griggs, Thomas R., Herbst, Margaret C., Bromberg, Philip A., Williams, Ronald W., Cascio, Wayne E.. Cardiovascular effects in patrol officers are associated with fine particulate matter from brake wear and engine emissions. Particle and Fibre Toxicology. December 2004; 1(2): 1-10. http://hdl.handle.net/10342/3384. Accessed September 27, 2023.
    Collections
    • Cardiovascular Sciences
    Publisher
    East Carolina University

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