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HERO ID
3261608
Reference Type
Journal Article
Title
Respiratory filter reduces the cardiovascular effects associated with diesel exhaust exposure a randomized, prospective, double-blind, controlled study of heart failure: the FILTER-HF trial
Author(s)
Vieira, JL; Guimaraes, GV; de Andre, PA; Cruz, FD; Nascimento Saldiva, PH; Bocchi, EA
Year
2016
Journal
JACC: Heart Failure
ISSN:
2213-1779
Publisher
Elsevier Inc.
Volume
4
Issue
1
Page Numbers
55-64
Language
English
PMID
26738952
DOI
10.1016/j.jchf.2015.07.018
Web of Science Id
WOS:000367766400010
Abstract
OBJECTIVES The goal of this study was to test the effects of a respiratory filter intervention (filter) during controlled pollution exposure.
BACKGROUND Air pollution is considered a risk factor for heart failure (HF) decompensation and mortality.
METHODS This study was a double-blind, randomized to order, controlled, 3-way crossover, single-center clinical trial. It enrolled 26 patients with HF and 15 control volunteers. Participants were exposed in 3 separate sessions to clean air, unfiltered diesel exhaust exposure (DE), or filtered DE. Endpoints were endothelial function assessed by using the reactive hyperemia index (RHi), arterial stiffness, serum biomarkers, 6-min walking distance, and heart rate variability.
RESULTS In patients with HF, DE was associated with a worsening in RHi from 2.17 (interquartile range [IQR]: 1.8 to 2.5) to 1.72 (IQR: 1.5 to 2.2; p = 0.002) and an increase in B-type natriuretic peptide (BNP) from 47.0 pg/ml (IQR: 17.3 to 118.0 pg/ml) to 66.5 pg/ml (IQR: 26.5 to 155.5 pg/ml; p = 0.004). Filtration reduced the particulate concentration (325 +/- 31 mu g/m(3) vs. 25 +/- 6 mu g/m(3); p < 0.001); in the group with HF, filter was associated with an improvement in RHi from 1.72 (IQR: 1.5 to 2.2) to 2.06 (IQR: 1.5 to 2.6; p = 0.019) and a decrease in BNP from 66.5 pg/ml (IQR: 26.5 to 155.5 pg/ml) to 44.0 pg/ml (IQR: 20.0 to 110.0 pg/ml; p = 0.015) compared with DE. In both groups, DE decreased the 6-min walking distance and arterial stiffness, although filter did not change these responses. DE had no effect on heart rate variability or exercise testing.
CONCLUSIONS To our knowledge, this trial is the first to show that a filter can reduce both endothelial dysfunction and BNP increases in patients with HF during DE. Given these potential benefits, the widespread use of filters in patients with HF exposed to traffic-derived air pollution may have beneficial public health effects and reduce the burden of HF. (Effects of Air Pollution Exposure Reduction by Filter Mask on Heart Failure; NCT01960920) (C) 2016 by the American College of Cardiology Foundation.
Keywords
air pollution; endothelium; heart failure
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ISA-PM (2019)
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Chapter 6
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ST PM Cardiovascular
LT PM Cardiovascular
ST PM Metabolic
LT PM Metabolic
ST PM Respiratory
LT PM Respiratory
ST PM Nervous
LT PM Nervous
PM Repro-Dev
PM Cancer-Genotox
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Chapter 6
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