https://doi.org/10.1007/s00204-019-02565-9

Anita R. Iskandar, Filippo Zanetti, Diego Marescotti, Bjorn Titz, Alain Sewer, Athanasios Kondylis, Patrice Leroy, Vincenzo Belcastro, Laura Ortega Torres, Stefano Acali, Shoaib Majeed, Sandro Steiner, Keyur Trivedi, Emmanuel Guedj, Celine Merg, Thomas Schneider, Stefan Frentzel, Florian Martin, Nikolai V. Ivanov, Manuel C. Peitsch, Julia Hoeng

Philip Morris International R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000 Neuchâtel, Switzerland

Previous experimental setups shows the effects of e-liquids on cell viability (first layer), followed by investigating the potential mechanisms of toxicity elicited by e-liquids (second layer) and finally assessing the impacts of aerosols (third layer). In this present work shows how the three-layer framework is leveraged to evaluate the potential toxicity and biological effects of the MESH Classic Tobacco and Base e-liquids/aerosols compared with those of 3R4F CS.

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DOI: 10.1021/acsnano.9b01823

Ingeborg Kooter¹, Marit Ilves ², Mariska Gröllers-Mulderij ¹, Evert Duistermaat ³, Peter C. Tromp ¹, Frieke Kuper ¹, Pia Kinaret ^4,5, Kai Savolainen ⁶, Dario Greco ^4,5, Piia Karisola ², Joseph Ndika ², and Harri Alenius <sup>2,7

1</sup>The Netherlands Organization for Applied Scientific Research, TNO, P.O. Box 80015, Utrecht 3584 CB, The Netherlands
²Human Microbiome Research, Faculty of Medicine, University of Helsinki, P.O. Box 21, Helsinki 00290, Finland
³Triskelion B.V., P.O. Box 844, Zeist 3704 HE, The Netherlands
⁴Faculty of Medicine and Life Sciences, University of Tampere, Tampere FI-33014, Finland
⁵Institute of Biotechnology, University of Helsinki, P.O. Box 56, Helsinki 00014, Finland
⁶Finnish Institute of Occupational Health, P.O. Box 40, Helsinki 00014, Finland
⁷Institute of Environmental Medicine, Karolinska Institutet, P.O. Box 210, Stockholm SE-17176, Sweden

3D human bronchial epithelial cells were cultured at the air−liquid interface that mimics relevant inhalatory exposure were exposed to aerosols of pristine (nCuO) and carboxylated (nCuOCOOH) copper oxide nanoparticles. This paper shows that the existence of asthma enhances sensitivity of the airways to nanoparticle aerosols, possibly as a combined result of a hyperactive airway and inefficient mucociliary clearance mechanisms in asthmatics. The test results are shown in cell viabilty (LDH), Inflammation (IL6, IL8, MCP1) and Transcroptomics.

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Anita R. Iskandar, Filippo Zanetti, Athanasios Kondylis, Florian Martin, Alain Sewer, Laura Ortega Torres, Shoaib Majeed, Sandro Steiner, Emmanuel Guedj, Celine Merg, Thomas Schneider, Keyur Trivedi, Stefan Frentzel, Nikolai V. Ivanov, Manuel C. Peitsch, Julia Hoeng

PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, CH-2000 Neuchâtel, Switzerland

The impacts of an acute exposure to cigarette smoke (CS) and to aerosol from a novel electronic cigarette (EC) device using MESH™ technology were assessed using human organotypic buccal epithelial cultures and small airway epithelial cultures. A paired design was implemented: in parallel to the exposure to CS or EC aerosol, cultures were also exposed to air in the same exposure module. Tissue damage was not seen in cultures exposed to the IQOS MESH™ Classic Tobacco aerosol despite resulting in greater concentrations of deposited nicotine. In buccal cultures, CS and IQOS MESH™ Classic Tobacco aerosol elicited different infammatory response.

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DOI: 10.2217/nnm-2017-0358

Savvina Chortarea^1,2, Kleanthis Fytianos^1,3,4, Laura Rodriguez-Lorenzo¹, Alke Petri-Fink^1,5 & Barbara Rothen-Rutishauser^1
1BioNanomaterials, Adolphe Merkle Institute, University of Fribourg, Fribourg, Switzerland
²Laboratory for Particles – Biology Interactions, Empa, Swiss Federal Laboratories for Materials, Science & Technology, St Gallen, Switzerland
³Department of Pulmonary Medicine, University of Bern, Bern, Switzerland
⁴Department of Clinical Research, University of Bern, Bern, Switzerland
⁵Department of Chemistry, University of Fribourg, Fribourg, Switzerland

The distribution and impact of aerosol-delivered functionalized AuNPs upon repeated administration were explored in a complex in vitro human lung epithelial tissue barrier model applying an air–liquid interface exposure approach. Nanoparticles were aerosolized using the Air-Liquid Interface system consisting of a nebulizer, an exposure and an incubation chamber connected to an air-flow system to provide optimum conditions for cell cultivation as well as a quartz crystal microbalance for online measurements of the NP dose deposited on the cells surface.

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DOI: 10.1080/17435390.2018.1472310

Beyeler S^1,2, Chortarea S^3,4, Rothen-Rutishauser B³, Petri-Fink A³, Wick P⁴, Tschanz SA⁵, von Garnier C^1,2, Blank F^1,2.

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