PMID- 29185369 OWN - NLM STAT- MEDLINE DCOM- 20180903 LR - 20180903 IS - 1537-6524 (Electronic) IS - 1537-6516 (Linking) VI - 28 IP - 4 DP - 2018 May TI - Cellular effects of thirdhand tobacco smoke from smokers' homes. PG - 243-251 LID - 10.1080/15376516.2017.1411411 [doi] AB - After the cigarette is extinguished, many toxic compounds remain in the environment and accumulate in the air or on surfaces. This exposure is termed thirdhand smoke (THS) and its risks are poorly known. The aim of the study was to evaluate the cellular effects of THS from smokers' homes. Papers were placed in nine smoker's home and three nonsmoker's homes. An area equivalent to the paper size was cleaned with a cotton wipe. A549, Hep-2 and 3T3 cells were exposed to THS for 24 h and cellular functions were assessed by MTT, neutral red (NR) reuptake and trypan blue exclusion assays. High levels of nicotine were found in samples from smokers' homes. Cellular proliferation was similar in almost all samples after THS exposure. Few changes in the cellular functions were observed, mainly higher mitochondrial activity, in paper samples. We are able to detect markers of THS collected from smokers' homes, but a clear evidence of cellular toxicity cannot be demonstrated by the present assays. This is the first study to evaluate the cellular effects of THS samples collected from smokers' homes. FAU - Figueiro, Luciana Rizzieri AU - Figueiro LR AUID- ORCID: 0000-0001-7224-8927 AD - a PPG Pathology , Federal University of Health Sciences of Porto Alegre (UFCSPA) , Porto Alegre , Brazil. FAU - Linden, Rafael AU - Linden R AD - b Toxicology Laboratory, Institute of Health Sciences , Feevale University , Novo Hamburgo , Brazil. FAU - Ziulkoski, Ana Luiza AU - Ziulkoski AL AD - c Cytotoxicity Laboratory, Institute of Health Sciences , Feevale University , Novo Hamburgo , Brazil. FAU - Dantas, Denise Conceicao Mesquita AU - Dantas DCM AD - d Pharmacoscience Department , UFCSPA , Porto Alegre , Brazil. LA - eng PT - Journal Article DEP - 20171207 PL - England TA - Toxicol Mech Methods JT - Toxicology mechanisms and methods JID - 101134521 RN - 0 (Tobacco Smoke Pollution) SB - IM MH - 3T3 Cells MH - A549 Cells MH - Air Pollution, Indoor/*adverse effects/analysis MH - Animals MH - Brazil MH - Cell Proliferation/drug effects MH - Cell Survival/drug effects MH - Chromatography, Paper MH - Environmental Monitoring/*methods MH - Gas Chromatography-Mass Spectrometry MH - *Housing/standards MH - Humans MH - Mice MH - Tobacco Smoke Pollution/*adverse effects/analysis OTO - NOTNLM OT - Thirdhand tobacco smoke OT - cytotoxicity OT - environmental tobacco smoke OT - nicotine OT - smoke OT - tobacco EDAT- 2017/12/01 06:00 MHDA- 2018/09/04 06:00 CRDT- 2017/11/30 06:00 PHST- 2017/12/01 06:00 [pubmed] PHST- 2018/09/04 06:00 [medline] PHST- 2017/11/30 06:00 [entrez] AID - 10.1080/15376516.2017.1411411 [doi] PST - ppublish SO - Toxicol Mech Methods. 2018 May;28(4):243-251. doi: 10.1080/15376516.2017.1411411. Epub 2017 Dec 7.