Document Detail


Particle Traps Prevent Adverse Vascular and Prothrombotic Effects of Diesel Engine Exhaust Inhalation in Men.
MedLine Citation:
PMID:  21482966     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Background- In controlled human exposure studies, diesel engine exhaust inhalation impairs vascular function and enhances thrombus formation. The aim of the present study was to establish whether an exhaust particle trap could prevent these adverse cardiovascular effects in men. Methods and Results- Nineteen healthy volunteers (mean age, 25±3 years) were exposed to filtered air and diesel exhaust in the presence or absence of a particle trap for 1 hour in a randomized, double-blind, 3-way crossover trial. Bilateral forearm blood flow and plasma fibrinolytic factors were assessed with venous occlusion plethysmography and blood sampling during intra-arterial infusion of acetylcholine, bradykinin, sodium nitroprusside, and verapamil. Ex vivo thrombus formation was determined with the use of the Badimon chamber. Compared with filtered air, diesel exhaust inhalation was associated with reduced vasodilatation and increased ex vivo thrombus formation under both low- and high-shear conditions. The particle trap markedly reduced diesel exhaust particulate number (from 150 000 to 300 000/cm(3) to 30 to 300/cm(3); P<0.001) and mass (320±10 to 7.2±2.0 μg/m(3); P<0.001), and was associated with increased vasodilatation, reduced thrombus formation, and an increase in tissue-type plasminogen activator release. Conclusions- Exhaust particle traps are a highly efficient method of reducing particle emissions from diesel engines. With a range of surrogate measures, the use of a particle trap prevents several adverse cardiovascular effects of exhaust inhalation in men. Given these beneficial effects on biomarkers of cardiovascular health, the widespread use of particle traps on diesel-powered vehicles may have substantial public health benefits and reduce the burden of cardiovascular disease. Clinical Trial Registration- http://www.clinicaltrials.gov. Unique identifier: NCT00745446.
Authors:
Andrew J Lucking; Magnus Lundbäck; Stefan L Barath; Nicholas L Mills; Manjit K Sidhu; Jeremy P Langrish; Nicholas A Boon; Jamshid Pourazar; Juan J Badimon; Miriam E Gerlofs-Nijland; Flemming R Cassee; Christoffer Boman; Kenneth Donaldson; Thomas Sandstrom; David E Newby; Anders Blomberg
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-4-11
Journal Detail:
Title:  Circulation     Volume:  -     ISSN:  1524-4539     ISO Abbreviation:  -     Publication Date:  2011 Apr 
Date Detail:
Created Date:  2011-4-12     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0147763     Medline TA:  Circulation     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Centre for Cardiovascular Science, University of Edinburgh, Edinburgh, UK.
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