Health Effects of Occupational Exposure to Combustion Particles - a Study on Volunteers Performing as Train Conductors
NCT ID: NCT03104387
Last Updated: 2020-08-10
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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COMPLETED
NA
29 participants
INTERVENTIONAL
2017-05-16
2020-05-01
Brief Summary
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A recent Danish report concluded that train conductors on a working day, and in two specific diesel engine trains, are exposed to higher concentrations of diesel exhaust than by constant stay in a busy street. Indeed, the average exposure for train conductors on such engines was around 100,000-150,000 UFP per cm3 as compared with around 40,000 per cm3 on a busy street in Copenhagen \[1\]. The aim of this study is to investigate if this occupational exposure is associated with vascular and respiratory impairment and DNA damage.
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Detailed Description
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Conditions
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Study Design
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RANDOMIZED
CROSSOVER
BASIC_SCIENCE
NONE
Study Groups
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Diesel train - exposure scenario
The same study person will be exposed to two different scenarios, at different times and for three consecutive days. It will be a lag time of 2 weeks between each exposure scenario. The "exposure" scenario is defined as a workday (6 hours) on the diesel ME-driven model regional train. The Diesel Train Scenario is performed twice. After the scenario completion (on the third day in defined train routes) the vascular function, lung function, blood and urine samplings are performed.
Diesel train
Exposure to air with high level of ultrafine particles (Diesel train)
Electric train - low exposure scenario
The same study person will be exposed to two different scenarios, at different times and for three consecutive days. It will be a lag time of 2 weeks between each exposure scenario. The "low exposure" scenario is defined as a workday (6 hours) on the electric train. The Diesel Train Scenario is performed twice. After the scenario completion (on the third day in defined train routes) the vascular function, lung function, blood and urine samplings are performed.
Electric train
Exposure to air with low level of ultrafine particles (Electric train)
Interventions
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Electric train
Exposure to air with low level of ultrafine particles (Electric train)
Diesel train
Exposure to air with high level of ultrafine particles (Diesel train)
Eligibility Criteria
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Inclusion Criteria
* Legally competent subjects
Exclusion Criteria
* Pregnancy
* Alcohol and drug abuse
* Prescriptionary use of anti-inflammatory or cardiovascular medication
18 Years
ALL
Yes
Sponsors
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National Research Centre for the Working Environment, Denmark
OTHER_GOV
University of Copenhagen
OTHER
Responsible Party
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Peter Moller
Professor
Principal Investigators
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Peter Moller, PhD
Role: PRINCIPAL_INVESTIGATOR
University of Copenhagen
Locations
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University of Copenhagen
Copenhagen, , Denmark
Countries
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References
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Karottki G, Loft S. Rapport vedroerende maaling af udsaettelse for ultrafine partikler blandt ansatte i DSB, 1-48, 2015.
Brauner EV, Forchhammer L, Moller P, Barregard L, Gunnarsen L, Afshari A, Wahlin P, Glasius M, Dragsted LO, Basu S, Raaschou-Nielsen O, Loft S. Indoor particles affect vascular function in the aged: an air filtration-based intervention study. Am J Respir Crit Care Med. 2008 Feb 15;177(4):419-25. doi: 10.1164/rccm.200704-632OC. Epub 2007 Oct 11.
Olsen Y, Karottki DG, Jensen DM, Beko G, Kjeldsen BU, Clausen G, Hersoug LG, Holst GJ, Wierzbicka A, Sigsgaard T, Linneberg A, Moller P, Loft S. Vascular and lung function related to ultrafine and fine particles exposure assessed by personal and indoor monitoring: a cross-sectional study. Environ Health. 2014 Dec 15;13:112. doi: 10.1186/1476-069X-13-112.
Karottki DG, Spilak M, Frederiksen M, Gunnarsen L, Brauner EV, Kolarik B, Andersen ZJ, Sigsgaard T, Barregard L, Strandberg B, Sallsten G, Moller P, Loft S. An indoor air filtration study in homes of elderly: cardiovascular and respiratory effects of exposure to particulate matter. Environ Health. 2013 Dec 28;12:116. doi: 10.1186/1476-069X-12-116.
Hemmingsen JG, Rissler J, Lykkesfeldt J, Sallsten G, Kristiansen J, Moller P P, Loft S. Controlled exposure to particulate matter from urban street air is associated with decreased vasodilation and heart rate variability in overweight and older adults. Part Fibre Toxicol. 2015 Mar 19;12:6. doi: 10.1186/s12989-015-0081-9.
Brauner EV, Moller P, Barregard L, Dragsted LO, Glasius M, Wahlin P, Vinzents P, Raaschou-Nielsen O, Loft S. Exposure to ambient concentrations of particulate air pollution does not influence vascular function or inflammatory pathways in young healthy individuals. Part Fibre Toxicol. 2008 Oct 6;5:13. doi: 10.1186/1743-8977-5-13.
Forchhammer L, Moller P, Riddervold IS, Bonlokke J, Massling A, Sigsgaard T, Loft S. Controlled human wood smoke exposure: oxidative stress, inflammation and microvascular function. Part Fibre Toxicol. 2012 Mar 27;9:7. doi: 10.1186/1743-8977-9-7.
Brauner EV, Forchhammer L, Moller P, Simonsen J, Glasius M, Wahlin P, Raaschou-Nielsen O, Loft S. Exposure to ultrafine particles from ambient air and oxidative stress-induced DNA damage. Environ Health Perspect. 2007 Aug;115(8):1177-82. doi: 10.1289/ehp.9984.
Danielsen PH, Brauner EV, Barregard L, Sallsten G, Wallin M, Olinski R, Rozalski R, Moller P, Loft S. Oxidatively damaged DNA and its repair after experimental exposure to wood smoke in healthy humans. Mutat Res. 2008 Jul 3;642(1-2):37-42. doi: 10.1016/j.mrfmmm.2008.04.001. Epub 2008 Apr 14.
Hemmingsen JG, Jantzen K, Moller P, Loft S. No oxidative stress or DNA damage in peripheral blood mononuclear cells after exposure to particles from urban street air in overweight elderly. Mutagenesis. 2015 Sep;30(5):635-42. doi: 10.1093/mutage/gev027. Epub 2015 Apr 22.
Moller P, Danielsen PH, Karottki DG, Jantzen K, Roursgaard M, Klingberg H, Jensen DM, Christophersen DV, Hemmingsen JG, Cao Y, Loft S. Oxidative stress and inflammation generated DNA damage by exposure to air pollution particles. Mutat Res Rev Mutat Res. 2014 Oct-Dec;762:133-66. doi: 10.1016/j.mrrev.2014.09.001. Epub 2014 Sep 16.
Moller P, Hemmingsen JG, Jensen DM, Danielsen PH, Karottki DG, Jantzen K, Roursgaard M, Cao Y, Kermanizadeh A, Klingberg H, Christophersen DV, Hersoug LG, Loft S. Applications of the comet assay in particle toxicology: air pollution and engineered nanomaterials exposure. Mutagenesis. 2015 Jan;30(1):67-83. doi: 10.1093/mutage/geu035.
Moller P, Loft S. Oxidative damage to DNA and lipids as biomarkers of exposure to air pollution. Environ Health Perspect. 2010 Aug;118(8):1126-36. doi: 10.1289/ehp.0901725. Epub 2010 Apr 27.
Aragon M, Erdely A, Bishop L, Salmen R, Weaver J, Liu J, Hall P, Eye T, Kodali V, Zeidler-Erdely P, Stafflinger JE, Ottens AK, Campen MJ. MMP-9-Dependent Serum-Borne Bioactivity Caused by Multiwalled Carbon Nanotube Exposure Induces Vascular Dysfunction via the CD36 Scavenger Receptor. Toxicol Sci. 2016 Apr;150(2):488-98. doi: 10.1093/toxsci/kfw015. Epub 2016 Jan 21.
Aragon MJ, Chrobak I, Brower J, Roldan L, Fredenburgh LE, McDonald JD, Campen MJ. Inflammatory and Vasoactive Effects of Serum Following Inhalation of Varied Complex Mixtures. Cardiovasc Toxicol. 2016 Apr;16(2):163-71. doi: 10.1007/s12012-015-9325-z.
Andersen MHG, Frederiksen M, Saber AT, Wils RS, Fonseca AS, Koponen IK, Johannesson S, Roursgaard M, Loft S, Moller P, Vogel U. Health effects of exposure to diesel exhaust in diesel-powered trains. Part Fibre Toxicol. 2019 Jun 11;16(1):21. doi: 10.1186/s12989-019-0306-4.
Other Identifiers
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No grant number
Identifier Type: OTHER_GRANT
Identifier Source: secondary_id
2015-57-0121 case SUND-2016-80
Identifier Type: OTHER
Identifier Source: secondary_id
H-16033227
Identifier Type: OTHER
Identifier Source: secondary_id
H-16033227
Identifier Type: -
Identifier Source: org_study_id
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