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Particulate matter from both heavy fuel oil and diesel fuel shipping emissions show strong biological effects on human lung cells at realistic and comparable in vitro exposure conditions

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Item Type:Article
Title:Particulate matter from both heavy fuel oil and diesel fuel shipping emissions show strong biological effects on human lung cells at realistic and comparable in vitro exposure conditions
Creators Name:Oeder, S. and Kanashova, T. and Sippula, O. and Sapcariu, S.C. and Streibel, T. and Arteaga-Salas, J.M. and Passig, J. and Dilger, M. and Paur, H.R. and Schlager, C. and Muelhopt, S. and Diabate, S. and Weiss, C. and Stengel, B. and Rabe, R. and Harndorf, H. and Torvela, T. and Jokiniemi, J.K. and Hirvonen, M.R. and Schmidt-Weber, C. and Traidl-Hoffmann, C. and BeruBe, K.A. and Wlodarczyk, A.J. and Prytherch, Z. and Michalke, B. and Krebs, T. and Prevot, A.S.H. and Kelbg, M. and Tiggesbaeumker, J. and Karg, E. and Jakobi, G. and Scholtes, S. and Schnelle-Kreis, J. and Lintelmann, J. and Matuschek, G. and Sklorz, M. and Klingbeil, S. and Orasche, J. and Richthammer, P. and Mueller, L. and Elsasser, M. and Reda, A. and Groeger, T. and Weggler, B. and Schwemer, T. and Czech, H. and Rueger, C.P. and Abbaszade, G. and Radischat, C. and Hiller, K. and Buters, J.T.M. and Dittmar, G. and Zimmermann, R.
Abstract:BACKGROUND: Ship engine emissions are important with regard to lung and cardiovascular diseases especially in coastal regions worldwide. Known cellular responses to combustion particles include oxidative stress and inflammatory signalling. OBJECTIVES: To provide a molecular link between the chemical and physical characteristics of ship emission particles and the cellular responses they elicit and to identify potentially harmful fractions in shipping emission aerosols. METHODS: Through an air-liquid interface exposure system, we exposed human lung cells under realistic in vitro conditions to exhaust fumes from a ship engine running on either common heavy fuel oil (HFO) or cleaner-burning diesel fuel (DF). Advanced chemical analyses of the exhaust aerosols were combined with transcriptional, proteomic and metabolomic profiling including isotope labelling methods to characterise the lung cell responses. RESULTS: The HFO emissions contained high concentrations of toxic compounds such as metals and polycyclic aromatic hydrocarbon, and were higher in particle mass. These compounds were lower in DF emissions, which in turn had higher concentrations of elemental carbon ("soot"). Common cellular reactions included cellular stress responses and endocytosis. Reactions to HFO emissions were dominated by oxidative stress and inflammatory responses, whereas DF emissions induced generally a broader biological response than HFO emissions and affected essential cellular pathways such as energy metabolism, protein synthesis, and chromatin modification. CONCLUSIONS: Despite a lower content of known toxic compounds, combustion particles from the clean shipping fuel DF influenced several essential pathways of lung cell metabolism more strongly than particles from the unrefined fuel HFO. This might be attributable to a higher soot content in DF. Thus the role of diesel soot, which is a known carcinogen in acute air pollution-induced health effects should be further investigated. For the use of HFO and DF we recommend a reduction of carbonaceous soot in the ship emissions by implementation of filtration devices.
Keywords:Endocytosis, Gasoline, Lung, Oxidative Stress, Particulate Matter, Ships, Tumor Cell Line, Vehicle Emissions
Source:PLoS ONE
Publisher:Public Library of Science
Page Range:e0126536
Date:3 June 2015
Official Publication:https://doi.org/10.1371/journal.pone.0126536
PubMed:View item in PubMed

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