| Long-term exposure to traffic-related PM(10) and decreased heart rate variability: Is the association restricted to subjects taking ACE inhibitors? | |
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MedLine Citation:
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PMID: 22820680 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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BACKGROUND: Alterations in heart rate variability (HRV) are a potential link between exposure to traffic-related air pollution and cardiovascular mortality. OBJECTIVES: We investigated whether long-term exposure to traffic-related PM(10) (TPM(10)) is associated with HRV in older subjects and/or in participants taking specific cardiovascular treatment or with self-reported heart disease. METHODS: We included 1607 subjects from the general population aged 50 to 72years. These participants from the SAPALDIA cohort underwent ambulatory 24-hr electrocardiogram monitoring. Associations of average annual exposure to TPM(10) over 10years with HRV parameters from time and frequency domains were estimated using multivariable mixed linear models. Effect estimates are expressed as percent changes in geometric means. RESULTS: HRV was only associated with TPM(10) in participants under ACE inhibitor therapy (N=94). A 1μg/m(3) increment, approximately equivalent to an interquartile range, in 10year average TPM(10) was associated with decrements of 14.5% (95% confidence interval (CI), -25.9 to -1.3) in high frequency (HF) power, of 4.5% (-8.2 to -0.5) in the standard deviation of all normal-to-normal RR intervals (SDNN), of 10.6% (-18.5 to -1.9) in total power (TP) and an increase of 9.2% (0.8 to 20.2) in the LF/HF power ratio. CONCLUSIONS: In the absence of an overall effect our results suggest that alterations in HRV, a measure of autonomic control of the cardiac rhythm, may not be a central mechanism by which long-term exposure to TPM(10) increases cardiovascular mortality. Novel evidence on an effect in persons under ACE inhibitor treatment needs to be confirmed in future studies. |
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Authors:
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Martin Adam; Denise Felber Dietrich; Emmanuel Schaffner; David Carballo; Jean-Claude Barthélémy; Jean-Michel Gaspoz; Ming-Yi Tsai; Regula Rapp; Harish Chandra Phuleria; Christian Schindler; Joel Schwartz; Nino Künzli; Nicole M Probst-Hensch |
Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-7-20 |
Journal Detail:
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Title: Environment international Volume: 48C ISSN: 1873-6750 ISO Abbreviation: - Publication Date: 2012 Jul |
Date Detail:
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Created Date: 2012-7-23 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7807270 Medline TA: Environ Int Country: - |
Other Details:
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Languages: ENG Pagination: 9-16 Citation Subset: - |
Copyright Information:
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Copyright © 2012 Elsevier Ltd. All rights reserved. |
Affiliation:
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Swiss Tropical and Public Health Institute, Basel, Switzerland; University of Basel, Basel, Switzerland. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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