PMID- 37164182 OWN - NLM STAT- Publisher LR - 20230510 IS - 1879-3177 (Electronic) IS - 0887-2333 (Linking) DP - 2023 May 8 TI - Evaluation of the effects of e-cigarette aerosol extracts and tobacco cigarette smoke extracts on human gingival epithelial cells. PG - 105605 LID - S0887-2333(23)00054-1 [pii] LID - 10.1016/j.tiv.2023.105605 [doi] AB - Smoking increases the risk of a number of diseases, including cardiovascular, oral and lung diseases. E-cigarettes are gaining popularity among young people as an alternative to cigarettes, but there is debate over whether they are less harmful to the mouth than e-cigarettes. In this study, human gingival epithelial cells (HGECs) were treated with four commercially available e-cigarette aerosol condensates (ECAC) or commercially available generic cigarette smoke condensates (CSC) with different nicotine concentrations. Cell viability was determined by MTT assay. Cell apoptosis was observed by acridine orange (AO) and Hoechst33258 staining. The levels of type I collagen, matrix metalloproteinase (MMP-1, MMP-3), cyclooxygenase 2 and inflammatory factors were detected by ELISA and RT-PCR. Finally, ROS levels were analyzed by ROS staining. The different effects of CSC and ECAC on HGECs were compared. The results showed that higher nicotine concentration of CS significantly reduced the activity of HGECs. By contrast, all ECAC had no significant effect. The levels of matrix metalloproteinase, COX-2, and inflammatory factors were higher in HGECs treated with CSC than those treated with ECAC. In contrast, the level of type I collagen was higher in HGECs treated with ECAC than those treated with CSC. In conclusion, all four flavors of e-cigarettes were less toxic to HGE cells than tobacco, but further clinical studies are needed to determine whether e-cigarettes are less harmful to oral health than conventional cigarettes. CI - Copyright (c) 2023. Published by Elsevier Ltd. FAU - Su, Le AU - Su L AD - State Key Laboratory of Biobased Material and Green Papermaking, School of Bioengineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, PR China; Shengshengxiangrong (Shandong) Biotechnology Co., Ltd., Jinan, PR China. Electronic address: sule@sdu.edu.cn. FAU - Liu, Jilong AU - Liu J AD - State Key Laboratory of Biobased Material and Green Papermaking, School of Bioengineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, PR China. FAU - Yue, Qiulin AU - Yue Q AD - State Key Laboratory of Biobased Material and Green Papermaking, School of Bioengineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, PR China; Shengshengxiangrong (Shandong) Biotechnology Co., Ltd., Jinan, PR China. FAU - Zhang, Song AU - Zhang S AD - State Key Laboratory of Biobased Material and Green Papermaking, School of Bioengineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, PR China. FAU - Zhao, Chen AU - Zhao C AD - State Key Laboratory of Biobased Material and Green Papermaking, School of Bioengineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, PR China. FAU - Sun, Xin AU - Sun X AD - State Key Laboratory of Biobased Material and Green Papermaking, School of Bioengineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, PR China. FAU - Xu, Jing AU - Xu J AD - Shenzhen RELX Tech. Co., Ltd, Shenzhen 518000, China. Electronic address: jing.xu@relxtech.com. FAU - Jiang, Xingtao AU - Jiang X AD - Shenzhen RELX Tech. Co., Ltd, Shenzhen 518000, China. Electronic address: xingtao.jiang@relxtech.com. FAU - Li, Kunlun AU - Li K AD - Shandong Zhuoran Biotechnology Co., Ltd., Jinan, PR China. FAU - Li, Baojun AU - Li B AD - Shandong Zhuoran Biotechnology Co., Ltd., Jinan, PR China. FAU - Zhao, Lin AU - Zhao L AD - State Key Laboratory of Biobased Material and Green Papermaking, School of Bioengineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, PR China; Shandong Chenzhang Biotechnology Co., Ltd., Jinan, PR China. Electronic address: iahb205@163.com. LA - eng PT - Journal Article DEP - 20230508 PL - England TA - Toxicol In Vitro JT - Toxicology in vitro : an international journal published in association with BIBRA JID - 8712158 SB - IM OTO - NOTNLM OT - "Apoptosis"[Mesh] OT - "Electronic nicotine delivery systems"[Mesh] OT - "Tobacco[Mesh]" COIS- Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2023/05/11 00:41 MHDA- 2023/05/11 00:41 CRDT- 2023/05/10 19:25 PHST- 2022/10/27 00:00 [received] PHST- 2023/04/27 00:00 [accepted] PHST- 2023/05/11 00:41 [medline] PHST- 2023/05/11 00:41 [pubmed] PHST- 2023/05/10 19:25 [entrez] AID - S0887-2333(23)00054-1 [pii] AID - 10.1016/j.tiv.2023.105605 [doi] PST - aheadofprint SO - Toxicol In Vitro. 2023 May 8:105605. doi: 10.1016/j.tiv.2023.105605.