PMID- 26154883 OWN - NLM STAT- MEDLINE DCOM- 20160121 LR - 20150709 IS - 0161-6412 (Print) IS - 0161-6412 (Linking) VI - 30 IP - 10 DP - 2008 Dec TI - Nanosize titanium dioxide cause neuronal apoptosis: a potential linkage between nanoparticle exposure and neural disorder. PG - 1115-20 LID - 10.1179/0161641215Z.000000000587 [doi] AB - OBJECTIVES: Nanosize titanium dioxide is used in water and air decontamination and in numerous home appliances and products designed for direct human use. However, the impact of nanoparticle on biological system is not known to us. Therefore, it is our urgent and primary task to ascertain the information about safety and potential hazards of products derived from nanomaterial to the health of mankind. METHODS: We made use of MTT, bromodeoxyuridine (BrdU), and Terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling (TUNEL) assays to testify the biological impact of nanosize TiO2 on olfactory bulb neurons cultured in vitro. RESULTS: In this article, we elucidate the cytotoxicity of titanium dioxide to olfactory bulb neurons on cellular and molecular level. We come to a conclusion that nanosize titanium dioxide causes neuronal apoptosis, and it also down-regulate the expression of olfactory marker protein (OMP) and tyrosine hydroxylase (TH). DISCUSSION: These results show that a relationship between nanoparticle exposure and pathogeny of neurodegenerative diseases may exist. FAU - Yu, Yiqun AU - Yu Y AD - Research and Development Department, Jianrong Chemistry and Nanomaterial Limited Corporation, Industrial Development Zone of Eastern Juancheng County, Shandong Province, China. yyq0821@163.com FAU - Ren, Wenwen AU - Ren W FAU - Ren, Baozhong AU - Ren B LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Neurol Res JT - Neurological research JID - 7905298 RN - 15FIX9V2JP (titanium dioxide) RN - D1JT611TNE (Titanium) SB - IM EIN - Neurol Res. 2008 Dec;30(10):1121 MH - Animals MH - Apoptosis/*drug effects MH - Cell Proliferation/drug effects MH - Cells, Cultured MH - DNA Fragmentation/drug effects MH - Metal Nanoparticles/*toxicity MH - Neurons/*drug effects/metabolism MH - Olfactory Bulb/cytology MH - Rats MH - Titanium/*toxicity OTO - NOTNLM OT - Apoptosis, OT - Neurodegenerative disease, OT - Olfactory bulb neuron OT - Titanium dioxide, EDAT- 2008/12/01 00:00 MHDA- 2016/01/23 06:00 CRDT- 2015/07/09 06:00 PHST- 2015/07/09 06:00 [entrez] PHST- 2008/12/01 00:00 [pubmed] PHST- 2016/01/23 06:00 [medline] AID - 10.1179/0161641215Z.000000000587 [doi] PST - ppublish SO - Neurol Res. 2008 Dec;30(10):1115-20. doi: 10.1179/0161641215Z.000000000587.