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Cigarette Smoke Exposure in Mice using a Whole-Body Inhalation System
Published on: October 22, 2020
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Thirdhand vaping exposures are associated with pulmonary and systemic inflammation in a mouse model
Sarah Commodore1, Shikha Sharma1, Carolyn Damilola Ekpruke1
1Department of Environmental and Occupational Health, School of Public Health Bloomington, Indiana University, Bloomington, IN 47408, USA.
Journal of Environmental Exposure Assessment
|May 14, 2024
Summary
Thirdhand smoke from electronic nicotine delivery systems (ENDS) contaminates surfaces, posing a health risk. Exposure to these contaminated surfaces can cause lung and systemic inflammation in mice.
Area of Science:
- Environmental Health
- Toxicology
- Respiratory Medicine
Background:
- Thirdhand smoke (THS) is residual smoke on surfaces, posing health risks.
- Electronic Nicotine Delivery Systems (ENDS) also produce THS, but its health effects are under-investigated.
- This study investigates inflammation caused by THS from ENDS.
Purpose of the Study:
- To determine if thirdhand ENDS exposure causes lung and systemic inflammation.
- To identify specific compounds in ENDS THS that may cause inflammation.
- To assess the impact of ENDS THS on immune markers in mice.
Main Methods:
- Mice were exposed to towels contaminated with ENDS aerosols.
- Protein levels in serum and bronchoalveolar lavage fluid (BALF) were measured.
- Particulate matter (PM) levels and specific chemical compounds were analyzed.
Main Results:
- Mice exposed to ENDS-contaminated towels showed altered immune responses.
- Lower serum Interleukin-7 (Il-7) and higher BALF Interleukin-13 (Il-13) levels were observed.
- Specific compounds like 4-methyl-1, 2-dioxolane were found on contaminated towels.
Conclusions:
- Thirdhand ENDS aerosols contaminate surfaces.
- Exposure to contaminated surfaces can lead to lung and systemic inflammation.
- Further research is needed to understand the full health implications of ENDS THS.
