PMID- 17442543 OWN - NLM STAT- MEDLINE DCOM- 20080214 LR - 20131121 IS - 0924-977X (Print) IS - 0924-977X (Linking) VI - 17 IP - 12 DP - 2007 Dec TI - Differential effects of classical and atypical antipsychotic drugs on rotenone-induced neurotoxicity in PC12 cells. PG - 768-73 AB - Although classical and atypical antipsychotics may have different effects against neurotoxicity, the underlying mechanisms remain to be elucidated. In the present study, we compared the atypical agents, risperidone (RIP), olanzapine (OLZ), and quetiapine (QTP), with the classical agent haloperidol (HAL) in reducing cytotoxicity induced by rotenone, a mitochondrial complex I inhibitor, in PC12 cells. We also determined whether there were differential effects of RIP and HAL on the expression of brain-derived neurotrophic factor (BDNF), signal transducers and activators of transcription-3 (STAT-3), and the immediate early gene c-fos, as well as intracellular levels of calcium. Exposure to 6 muM rotenone for 24 h resulted in a significant decrease in cell viability and apoptotic alteration. The rotenone-induced cytotoxicity was dose-dependently worsened by pretreatment with HAL, but significantly improved by the aforementioned atypical agents at low doses. Real-time PCR analysis revealed that HAL pretreatment significantly increased BDNF mRNA expression but did not alter c-fos and STAT-3 expression compared to rotenone-exposed cells. Unlike HAL, RIP pretreatment produced a significant elevation of all the three substance mRNA expression and the expression intensity was 2.6- to 4.6-fold greater than HAL. Pretreatment with RIP, but not HAL, also effectively prevented an elevation of intracellular levels of calcium provoked by rotenone. These results suggest that the protective effects of atypical antipsychotics are associated with a greater capacity to enhance pro-cell survival factors, therapeutic biomarker expression, and blockade of calcium influx. This may provide an alternative for explaining therapeutic advantages of atypical agents observed in clinical use. FAU - Tan, Qing-Rong AU - Tan QR AD - Department of Psychiatry, Xijing Hospital, The Fourth Military Medical University, Xi'an, Shaanxi 710032, China. tanqingr@fmmu.edu.cn FAU - Wang, Xin-Zhao AU - Wang XZ FAU - Wang, Chuan-Yue AU - Wang CY FAU - Liu, Xiao-Jun AU - Liu XJ FAU - Chen, Yun-Chun AU - Chen YC FAU - Wang, Huai-Hai AU - Wang HH FAU - Zhang, Rui-Guo AU - Zhang RG FAU - Zhen, Xue-Chu AU - Zhen XC FAU - Tong, Yao AU - Tong Y FAU - Zhang, Zhang-Jin AU - Zhang ZJ LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20070417 PL - Netherlands TA - Eur Neuropsychopharmacol JT - European neuropsychopharmacology : the journal of the European College of Neuropsychopharmacology JID - 9111390 RN - 0 (Antidepressive Agents) RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Neurotoxins) RN - 0 (Proto-Oncogene Proteins c-fos) RN - 0 (RNA, Messenger) RN - 0 (STAT3 Transcription Factor) RN - 0 (Stat3 protein, rat) RN - 03L9OT429T (Rotenone) RN - SY7Q814VUP (Calcium) SB - IM MH - Analysis of Variance MH - Animals MH - Antidepressive Agents/*classification/*pharmacology MH - Apoptosis/drug effects MH - Brain-Derived Neurotrophic Factor/genetics/metabolism MH - Calcium/metabolism MH - Cell Survival/drug effects MH - Dose-Response Relationship, Drug MH - Drug Interactions MH - Gene Expression Regulation/drug effects MH - Neurotoxins/*toxicity MH - PC12 Cells/*drug effects MH - Proto-Oncogene Proteins c-fos/genetics/metabolism MH - RNA, Messenger/biosynthesis MH - Rats MH - Reverse Transcriptase Polymerase Chain Reaction/methods MH - Rotenone/*toxicity MH - STAT3 Transcription Factor/genetics/metabolism EDAT- 2007/04/20 09:00 MHDA- 2008/02/15 09:00 CRDT- 2007/04/20 09:00 PHST- 2006/08/24 00:00 [received] PHST- 2007/01/15 00:00 [revised] PHST- 2007/03/06 00:00 [accepted] PHST- 2007/04/20 09:00 [pubmed] PHST- 2008/02/15 09:00 [medline] PHST- 2007/04/20 09:00 [entrez] AID - S0924-977X(07)00062-4 [pii] AID - 10.1016/j.euroneuro.2007.03.003 [doi] PST - ppublish SO - Eur Neuropsychopharmacol. 2007 Dec;17(12):768-73. doi: 10.1016/j.euroneuro.2007.03.003. Epub 2007 Apr 17.