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Combustion-derived ...
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Mills, Nicholas L.
(author)
Combustion-derived nanoparticulate induces the adverse vascular effects of diesel exhaust inhalation
- Article/chapterEnglish2011
Publisher, publication year, extent ...
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2011-07-13
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London :Academic Press,2011
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printrdacarrier
Numbers
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LIBRIS-ID:oai:DiVA.org:umu-50418
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https://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-50418URI
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https://doi.org/10.1093/eurheartj/ehr195DOI
Supplementary language notes
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Language:English
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Summary in:English
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
Notes
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Aim: Exposure to road traffic and air pollution may be a trigger of acute myocardial infarction, but the individual pollutants responsible for this effect have not been established. We assess the role of combustion-derived-nanoparticles in mediating the adverse cardiovascular effects of air pollution. Methods and results: To determine the in vivo effects of inhalation of diesel exhaust components, 16 healthy volunteers were exposed to (i) dilute diesel exhaust, (ii) pure carbon nanoparticulate, (iii) filtered diesel exhaust, or (iv) filtered air, in a randomized double blind cross-over study. Following each exposure, forearm blood flow was measured during intra-brachial bradykinin, acetylcholine, sodium nitroprusside, and verapamil infusions. Compared with filtered air, inhalation of diesel exhaust increased systolic blood pressure (145 +/- 4 vs. 133 +/- 3 mmHg, P < 0.05) and attenuated vasodilatation to bradykinin (P = 0.005), acetylcholine (P = 0.008), and sodium nitroprusside (P < 0.001). Exposure to pure carbon nanoparticulate or filtered exhaust had no effect on endothelium-dependent or -independent vasodilatation. To determine the direct vascular effects of nanoparticulate, isolated rat aortic rings (n = 6-9 per group) were assessed in vitro by wire myography and exposed to diesel exhaust particulate, pure carbon nanoparticulate and vehicle. Compared with vehicle, diesel exhaust particulate (but not pure carbon nanoparticulate) attenuated both acetylcholine (P < 0.001) and sodium-nitroprusside (P = 0.019)-induced vasorelaxation. These effects were partially attributable to both soluble and insoluble components of the particulate. Conclusion: Combustion-derived nanoparticulate appears to predominately mediate the adverse vascular effects of diesel exhaust inhalation. This provides a rationale for testing environmental health interventions targeted at reducing traffic-derived particulate emissions.
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Added entries (persons, corporate bodies, meetings, titles ...)
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Miller, Mark R.
(author)
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Lucking, Andrew J.
(author)
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Beveridge, Jon
(author)
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Flint, Laura
(author)
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Boere, A. John F.
(author)
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Fokkens, Paul H.
(author)
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Boon, Nicholas A.
(author)
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Sandström, ThomasUmeå universitet,Lungmedicin(Swepub:umu)thsa0001
(author)
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Blomberg, AndersUmeå universitet,Lungmedicin(Swepub:umu)anbl0001
(author)
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Duffin, Rodger
(author)
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Donaldson, Ken
(author)
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Hadoke, Patrick W. F.
(author)
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Cassee, Flemming R.
(author)
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Newby, David E.
(author)
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Umeå universitetLungmedicin
(creator_code:org_t)
Related titles
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In:European Heart JournalLondon : Academic Press32:21, s. 2660-26710195-668X1522-9645
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Mills, Nicholas ...
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Miller, Mark R.
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Lucking, Andrew ...
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Beveridge, Jon
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Flint, Laura
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Boere, A. John F ...
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Fokkens, Paul H.
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Boon, Nicholas A ...
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Sandström, Thoma ...
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Blomberg, Anders
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Duffin, Rodger
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Donaldson, Ken
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Hadoke, Patrick ...
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Cassee, Flemming ...
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Newby, David E.
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- MEDICAL AND HEALTH SCIENCES
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MEDICAL AND HEAL ...
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and Clinical Medicin ...
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and Cardiac and Card ...
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European Heart J ...
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Umeå University