Philip Morris International R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000, Neuchâtel, Switzerland.
Philip Morris International R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000, Neuchâtel, Switzerland.
Toxicol Lett. 2021 Feb 1;337:98-110. doi: 10.1016/j.toxlet.2020.11.006. Epub 2020 Nov 18.
Exposure to aerosol from electronic vapor (e-vapor) products has been suggested to result in less risk of harm to smokers than cigarette smoke (CS) exposure. Although many studies on e-vapor products have tested the effects of liquid formulations on cell cultures, few have evaluated the effects of aerosolized formulations. We examined the effects of acute exposure to the aerosol of an e-vapor device that uses the MESH® technology (IQOS® MESH, Philip Morris International) and to CS from the 3R4F reference cigarette on human organotypic bronchial epithelial culture and alveolar triculture models. In contrast to 3R4F CS exposure, exposure to the IQOS MESH aerosol (Classic Tobacco flavor) did not cause cytotoxicity in bronchial epithelial cultures or alveolar tricultures despite its greater concentrations of deposited nicotine (3- and 4-fold, respectively). CS exposure caused a marked decrease in the frequency and active area of ciliary beating in bronchial cultures, whereas IQOS MESH aerosol exposure did not. Global mRNA expression and secreted protein profiles revealed a significantly lower impact of IQOS MESH aerosol exposure than 3R4F CS exposure. Overall, our whole aerosol exposure study shows a clearly reduced impact of IQOS MESH aerosol relative to CS in bronchial and alveolar cultures, even at greater nicotine doses.
电子雾化(e-vapor)产品气溶胶的暴露被认为对吸烟者的危害小于香烟烟雾(CS)暴露。尽管许多关于电子雾化产品的研究都测试了液体配方对细胞培养的影响,但很少有研究评估雾化配方的影响。我们研究了使用 MESH®技术的电子雾化装置的气溶胶(IQOS® MESH,菲利普莫里斯国际)和 3R4F 参考香烟 CS 对人器官型支气管上皮培养物和肺泡三培养物模型的急性暴露的影响。与 3R4F CS 暴露相比,尽管 IQOS MESH 气溶胶(经典烟草味)中沉积的尼古丁浓度更高(分别为 3 倍和 4 倍),但它不会引起支气管上皮培养物或肺泡三培养物的细胞毒性。CS 暴露导致支气管培养物中纤毛摆动的频率和活跃面积明显下降,而 IQOS MESH 气溶胶暴露则没有。全球 mRNA 表达和分泌蛋白谱显示,与 3R4F CS 暴露相比,IQOS MESH 气溶胶暴露的影响明显降低。总的来说,我们的整个气溶胶暴露研究表明,与 CS 相比,IQOS MESH 气溶胶在支气管和肺泡培养物中的影响明显降低,即使在更高的尼古丁剂量下也是如此。