Objective: Thirdhand smoke (THS) is described as the accumulated chemicals left on indoor surfaces after tobacco smoking. Individuals can be exposed to THS by dermal or oral contact with THS-embedded surfaces or by breathing in the off-gasses. In the present study, the cytotoxic, oxidative, and inflammatory responses of THS extracts yielded from conventional (THS-C) and heated-tobacco products (THS-H) were examined in BEAS-2B human bronchial epithelial cell line.
Materials and Methods: The terrycloth samples were exposed to smoke in a closed polystyrene box and extracted in a complete cell culture medium for 24 hours at 37°C. Following this, the cytotoxicity of THS was assessed by MTT assay. Malondialdehyde (MDA) and intracellular glutathione (GSH) levels were determined in BEAS-2B cell lysate to assess oxidative response. The aryl hydrocarbon receptor (AhR) and interleukine-6 (IL-6) levels were determined via an ELISA kit.
Results: Both types of THS led to dose-dependent cytotoxicity in cells, which was remarkable with THS-C (50%, v/v). Moreover, GSH depletion and MDA increase were remarkable with both THS, particularly with THS-C. AhR activation was also slightly elevated with THS-C, whereas the increase in IL-6 was notable compared to THS-H.
Conclusion: THS exposure might lead to potential health risks particularly for respiratory health and the results support the need for comprehensive regulations and public health initiatives to minimize the harmful effects of THS.
Thirdhand smoke heated-tobacco product oxidative stress aryl hydrocarbon receptor inflammation interleukine-6
Primary Language | English |
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Subjects | Clinical Sciences (Other) |
Journal Section | Research Article |
Authors | |
Publication Date | September 18, 2023 |
Submission Date | June 25, 2023 |
Published in Issue | Year 2023 Volume: 13 Issue: 2 |