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Cited by 484

The DOI matches its Crossref record; 36 of the 36 references it cites were found in a registry or an index.

Insights Into the Mechanisms and Mediators of the Effects of Air Pollution Exposure on Blood Pressure and Vascular Function in Healthy Humans

Open access
Brook, Robert D., Urch, Bruce, Dvonch, J. Timothy, Bard, Robert L., Speck, Mary, Keeler, Gerald, Morishita, Masako, Marsik, Frank J., Kamal, Ali S., Kaciroti, Niko, Harkema, Jack, Corey, Paul, Silverman, Frances, Gold, Diane R., Wellenius, Greg, Mittleman, Murray A., Rajagopalan, Sanjay, Brook, Jeffrey R.·2009·Hypertension

Abstract

Fine particulate matter air pollution plus ozone impairs vascular function and raises diastolic blood pressure. We aimed to determine the mechanism and air pollutant responsible. The effects of pollution on heart rate variability, blood pressure, biomarkers, and brachial flow-mediated dilatation were determined in 2 randomized, double-blind, crossover studies. In Ann Arbor, 50 subjects were exposed to fine particles (150 μg/m 3 ) plus ozone (120 parts per billion) for 2 hours on 3 occasions with pretreatments of an endothelin antagonist (Bosentan, 250 mg), antioxidant (Vitamin C, 2 g), or placebo. In Toronto, 31 subjects were exposed to 4 different conditions (particles plus ozone, particles, ozone, and filtered air). In Toronto, diastolic blood pressure significantly increased (2.9 and 3.6 mm Hg) only during particle-containing exposures in association with particulate matter concentration and reductions in heart rate variability. Flow-mediated dilatation significantly decreased (2.0% and 2.9%) only 24 hours after particle-containing exposures in association with particulate matter concentration and increases in blood tumor necrosis factor α. In Ann Arbor, diastolic blood pressure significantly similarly increased during all of the exposures (2.5 to 4.0 mm Hg), a response not mitigated by pretreatments. Flow-mediated dilatation remained unaltered. Particulate matter, not ozone, was responsible for increasing diastolic blood pressure during air pollution inhalation, most plausibly by instigating acute autonomic imbalance. Only particles from urban Toronto additionally impaired endothelial function, likely via slower proinflammatory pathways. Our findings demonstrate credible mechanisms whereby fine particulate matter could trigger acute cardiovascular events and that aspects of exposure location may be an important determinant of the health consequences.

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Metadata

Authors
Brook, R. D., Urch, B., Dvonch, J. T., Bard, R. L., Speck, M., Keeler, G., Morishita, M., Marsik, F. J., Kamal, A. S., Kaciroti, N., Harkema, J., Corey, P., Silverman, F., Gold, D. R., Wellenius, G., Mittleman, M. A., Rajagopalan, S., & Brook, J. R.
Venue
Hypertension
Published
2009-09
Volume
54
Issue
3
Pages
659-667
ISSN
  • 0194-911X (ISSN-L)
  • 1524-4563
OpenAlex
W2109041140
Cited by
484
References
36
FWCI
19.24
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Insights Into the Mechanisms and Mediators of the Effects of Air Pollution Exposure on Blood Pressure and Vascular Function in Healthy Humans. https://app.cochat.ai/papers/10.1161/hypertensionaha.109.130237
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Brook, R. D., Urch, B., Dvonch, J. T., Bard, R. L., Speck, M., Keeler, G., Morishita, M., Marsik, F. J., Kamal, A. S., Kaciroti, N., Harkema, J., Corey, P., Silverman, F., Gold, D. R., Wellenius, G., Mittleman, M. A., Rajagopalan, S., & Brook, J. R. (2009). Insights Into the Mechanisms and Mediators of the Effects of Air Pollution Exposure on Blood Pressure and Vascular Function in Healthy Humans. Hypertension. https://doi.org/10.1161/hypertensionaha.109.130237

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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