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Snoderly HT, Alkhadrawi H, Panchal DM, Weaver KL, Vito JN, Freshwater KA, Santiago SP, Olfert IM, Nurkiewicz TR, Bennewitz MF. Short-term exposure of female BALB/cJ mice to e-cigarette aerosol promotes neutrophil recruitment and enhances neutrophil-platelet aggregation in pulmonary microvasculature. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2023; 86:246-262. [PMID: 36859793 PMCID: PMC10081729 DOI: 10.1080/15287394.2023.2184738] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Despite the perception that e-cigarettes are safer than conventional cigarettes, numerous findings demonstrated that e-cigarette aerosol (EC) exposure induced compromised immune functionality, vascular changes even after acute exposure, and lung injury. Notably, altered neutrophil functionality and platelet hemodynamics have been observed post-EC exposure. It was hypothesized that EC exposure initiates an inflammatory response resulting in altered neutrophil behavior and increased neutrophil-platelet interaction in the pulmonary microvasculature. Neutrophil and platelet responses were examined up to 48 hrs following whole-body, short-term EC exposure without flavorants or nicotine in a murine model, which most closely modeled secondhand exposure. This study is the first to investigate the impact of EC exposure through lung intravital imaging. Compared to room air-exposed mice, EC-exposed mice displayed significantly increased 1.7‒1.9-fold number of neutrophils in the pulmonary microvasculature associated with no marked change in neutrophils within whole blood or bronchoalveolar lavage fluid (BALF). Neutrophil-platelet interactions were also significantly elevated 1.9‒2.5-fold in exposed mice. Plasma concentration of myeloperoxidase was markedly reduced 1.5-fold 48 hr following exposure cessation, suggesting suppressed neutrophil antimicrobial activity. Cytokine expression exhibited changes indicating vascular damage. Effects persisted for 48 hr post-EC exposure. Data demonstrated that EC exposure repeated for 3 consecutive days in 2.5 hr intervals in the absence of flavorants or nicotine resulted in modified pulmonary vasculature hemodynamics, altered immune functionality, and a pro-inflammatory state in female BALB/cJ mice.
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Affiliation(s)
- Hunter T. Snoderly
- Department of Chemical and Biomedical Engineering, Benjamin M. Statler College of Engineering and Mineral Resources, West Virginia University, Morgantown, WV, USA
| | - Hassan Alkhadrawi
- Department of Chemical and Biomedical Engineering, Benjamin M. Statler College of Engineering and Mineral Resources, West Virginia University, Morgantown, WV, USA
| | - Dhruvi M. Panchal
- Department of Chemical and Biomedical Engineering, Benjamin M. Statler College of Engineering and Mineral Resources, West Virginia University, Morgantown, WV, USA
| | - Kelly L. Weaver
- Department of Microbiology, Immunology, and Cell Biology, School of Medicine, West Virginia University, Morgantown, WV, USA
| | - Jenna N. Vito
- Department of Chemical and Biomedical Engineering, Benjamin M. Statler College of Engineering and Mineral Resources, West Virginia University, Morgantown, WV, USA
| | - Kasey A. Freshwater
- Department of Chemical and Biomedical Engineering, Benjamin M. Statler College of Engineering and Mineral Resources, West Virginia University, Morgantown, WV, USA
| | - Stell P. Santiago
- Department of Pathology, Anatomy, and Laboratory Medicine, School of Medicine, West Virginia University, Morgantown, WV, USA
| | - I. Mark Olfert
- Center for Inhalation Toxicology, School of Medicine, West Virginia University, Morgantown, WV, USA
- Division of Exercise Physiology, School of Medicine, West Virginia University, Morgantown, WV, USA
- Department of Physiology and Pharmacology, School of Medicine, West Virginia University, Morgantown, WV, USA
| | - Timothy R. Nurkiewicz
- Center for Inhalation Toxicology, School of Medicine, West Virginia University, Morgantown, WV, USA
- Department of Physiology and Pharmacology, School of Medicine, West Virginia University, Morgantown, WV, USA
| | - Margaret F. Bennewitz
- Department of Chemical and Biomedical Engineering, Benjamin M. Statler College of Engineering and Mineral Resources, West Virginia University, Morgantown, WV, USA
- Center for Inhalation Toxicology, School of Medicine, West Virginia University, Morgantown, WV, USA
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