Hannah E O'Farrell1, Reece Brown2, Zac Brown2, Branka Milijevic2, Zoran D Ristovski2, Rayleen V Bowman3, Kwun M Fong3, Annalicia Vaughan3, Ian A Yang3. 1. The University of Queensland Thoracic Research Centre, The Prince Charles Hospital, Brisbane, QLD, Australia. Electronic address: hannah.ofarrell@uq.net.au. 2. ILAQH, School of Earth and Atmospheric Sciences, Queensland University of Technology, Brisbane, QLD, Australia. 3. The University of Queensland Thoracic Research Centre, The Prince Charles Hospital, Brisbane, QLD, Australia.
Abstract
BACKGROUND: The health effects of e-cigarettes in patients with pre-existing lung disease are unknown. The aim of this study was to investigate whether aerosols from a fourth-generation e-cigarette produces similar in-vitro cytotoxic, DNA damage and inflammatory effects on bronchial epithelial cells (BECs) from patients with COPD, as cigarette smoke. METHODS: BECs from patients with COPD who underwent surgery for lung cancer and comparator (immortalised 16HBE) cells were grown at air liquid interface (ALI). BECs were exposed to aerosols from a JUUL® e-cigarette (Virginia Tobacco and Menthol pods at 5% nicotine strength) or reference 3R4F cigarette for 30 min at ALI. Cell cytotoxicity, DNA damage and inflammation were measured. RESULTS: In response to the Virginia Tobacco and Menthol flavoured e-cigarette aerosols, COPD BECs showed comparable LDH release (cell cytotoxicity, p = 0.59, p = 0.67 respectively), DNA damage (p = 0.41, p = 0.51) and inflammation (IL-8, p = 0.20, p = 0.89 and IL-6, p = 0.24, p = 0.93), to cigarette smoke. 16HBE cells also showed comparable cellular responses to cigarette smoke. CONCLUSION: In airway cells from patients with COPD, aerosols from a fourth-generation e-cigarette were associated with similar toxicity to cigarette smoke. These results have potential implications for the safety of e-cigarette use in patients with lung disease.
BACKGROUND: The health effects of e-cigarettes in patients with pre-existing lung disease are unknown. The aim of this study was to investigate whether aerosols from a fourth-generation e-cigarette produces similar in-vitro cytotoxic, DNA damage and inflammatory effects on bronchial epithelial cells (BECs) from patients with COPD, as cigarette smoke. METHODS: BECs from patients with COPD who underwent surgery for lung cancer and comparator (immortalised 16HBE) cells were grown at air liquid interface (ALI). BECs were exposed to aerosols from a JUUL® e-cigarette (Virginia Tobacco and Menthol pods at 5% nicotine strength) or reference 3R4F cigarette for 30 min at ALI. Cell cytotoxicity, DNA damage and inflammation were measured. RESULTS: In response to the Virginia Tobacco and Menthol flavoured e-cigarette aerosols, COPD BECs showed comparable LDH release (cell cytotoxicity, p = 0.59, p = 0.67 respectively), DNA damage (p = 0.41, p = 0.51) and inflammation (IL-8, p = 0.20, p = 0.89 and IL-6, p = 0.24, p = 0.93), to cigarette smoke. 16HBE cells also showed comparable cellular responses to cigarette smoke. CONCLUSION: In airway cells from patients with COPD, aerosols from a fourth-generation e-cigarette were associated with similar toxicity to cigarette smoke. These results have potential implications for the safety of e-cigarette use in patients with lung disease.
Authors: Sara Trifunovic; Katarina Smiljanić; Albert Sickmann; Fiorella A Solari; Stoimir Kolarevic; Aleksandra Divac Rankov; Mila Ljujic Journal: Respir Res Date: 2022-07-15
Authors: Torben Stermann; Thach Nguyen; Burkhard Stahlmecke; Ana Maria Todea; Selina Woeste; Inken Hacheney; Jean Krutmann; Klaus Unfried; Roel P F Schins; Andrea Rossi Journal: Sci Rep Date: 2022-08-22 Impact factor: 4.996