bioRxiv preprint doi: https://doi.org/10.1101/490607; this version posted December 9, 2018. The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under aCC-BY-NC-ND 4.0 International license. Toxicity of JUUL Fluids and Aerosols Correlates Strongly with Nicotine and Some Flavor Chemical Concentrations Esther E. Omaiye MS†¶, Kevin J. McWhirter BS‡, Wentai Luo PhD‡§, James F. Pankow PhD‡§ and Prue Talbot PhD*¶ †Environmental Toxicology Graduate Program, University of California Riverside, California, USA ‡Department of Civil and Environmental Engineering, Portland State University, Portland, Oregon, USA §Department of Chemistry Portland State University. Portland, Oregon, USA ¶Department of Molecular, Cell and Systems Biology, University of California, Riverside, California, USA Keywords: Nicotine, JUUL, EC fluids, cytotoxicity, flavor chemicals, GC/MS Corresponding Author: *Dr. Prue Talbot Email:
[email protected] 1 bioRxiv preprint doi: https://doi.org/10.1101/490607; this version posted December 9, 2018. The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under aCC-BY-NC-ND 4.0 International license. ABSTRACT While JUUL electronic cigarettes (ECs) have captured the majority of the EC market with a large fraction of their sales going to adolescents, little is known about their cytotoxicity and potential effects on health. The purpose of this study was to determine flavor chemical and nicotine concentrations in the eight currently marketed pre-filled JUUL EC cartridges (“pods”) and to evaluate the cytotoxicity of the different variants (e.g., “Cool Mint” and “Crème Brulee”) using in vitro assays.