PMID- 23811107 OWN - NLM STAT- MEDLINE DCOM- 20140310 LR - 20190504 IS - 1872-7077 (Electronic) IS - 1382-6689 (Linking) VI - 36 IP - 2 DP - 2013 Sep TI - T-2 toxin exposure induces apoptosis in rat ovarian granulosa cells through oxidative stress. PG - 493-500 LID - S1382-6689(13)00076-8 [pii] LID - 10.1016/j.etap.2013.03.017 [doi] AB - OBJECTIVE: To investigate the reproductive toxicity and cytotoxicity of T-2 toxin, which is a mycotoxin, and to explore its potential apoptotic induction mechanism. METHODS: ovarian granulosa cells of rats were treated with T-2 toxin (1-100nM) for 24h. The cytotoxicity was assessed with MTT bioassay and apoptotic cells were detected by flow cytometry, and further identified by chromatin condensation and nuclear fragmentation with Hoechst 33258 under microscope; reactive oxygen species (ROS) with DCFH-DA was analyzed by fluorometry; total superoxide dismutase (SOD) was determined by NBT staining method. Glutathione peroxidase (GSHPx) activity was detected by UV colorimetric assay. The activity of catalase (CAT) in granulosa cells was measured by the Aebi method, and malondialdehyde (MDA) content was determined by thiobarbituric acid assay. RESULTS: T-2 toxin dose-dependently inhibited the growth of granulosa cells and resulted in apoptosis in rat granulosa cells. Treatment with T-2 toxin could induce ROS and MDA accumulation in granulosa cells, acompanying with losses of activities of SOD, GSH-Px and CAT, whereas T-2 toxin-induced apoptosis in granulosa cells could be significantly inhibited through the use of antioxidant Trolox. CONCLUSION: These data suggest that T-2 toxin may induce the apoptosis in rat granulosa cells through oxidative stress. CI - Copyright (c) 2013. Published by Elsevier B.V. FAU - Wu, Jing AU - Wu J AD - College of Veterinary Medicine, Hunan Agricultural University, Changsha, Hunan 410128, PR China. FAU - Tu, Di AU - Tu D AD - College of Veterinary Medicine, Hunan Agricultural University, Changsha, Hunan 410128, PR China. FAU - Yuan, Li-Yun AU - Yuan LY AD - College of Veterinary Medicine, Hunan Agricultural University, Changsha, Hunan 410128, PR China. FAU - Yuan, Hui AU - Yuan H AD - College of Veterinary Medicine, Hunan Agricultural University, Changsha, Hunan 410128, PR China. FAU - Wen, Li-Xin AU - Wen LX AD - College of Veterinary Medicine, Hunan Agricultural University, Changsha, Hunan 410128, PR China. Electronic address: sfwlx8015@sina.com. LA - eng PT - Journal Article DEP - 20130411 PL - Netherlands TA - Environ Toxicol Pharmacol JT - Environmental toxicology and pharmacology JID - 9612020 RN - 0 (Antioxidants) RN - 0 (Chromans) RN - 0 (Reactive Oxygen Species) RN - 0 (Thiobarbituric Acid Reactive Substances) RN - EC 1.11.1.6 (Catalase) RN - EC 1.11.1.9 (Glutathione Peroxidase) RN - EC 1.15.1.1 (Superoxide Dismutase) RN - I3FL5NM3MO (T-2 Toxin) RN - S18UL9710X (6-hydroxy-2,5,7,8-tetramethylchroman-2-carboxylic acid) SB - IM MH - Animals MH - Antioxidants/pharmacology MH - Apoptosis/*drug effects MH - Catalase/metabolism MH - Cell Proliferation/drug effects MH - Cell Survival/drug effects MH - Cells, Cultured MH - Chromans/pharmacology MH - Dose-Response Relationship, Drug MH - Female MH - Glutathione Peroxidase/metabolism MH - Granulosa Cells/*drug effects/metabolism/pathology MH - Oxidative Stress/*drug effects MH - Rats MH - Rats, Wistar MH - Reactive Oxygen Species/metabolism MH - Superoxide Dismutase/metabolism MH - T-2 Toxin/*toxicity MH - Thiobarbituric Acid Reactive Substances/metabolism OTO - NOTNLM OT - Apoptosis OT - Granulosa cells OT - Oxidative stress OT - T-2 toxin EDAT- 2013/07/03 06:00 MHDA- 2014/03/13 06:00 CRDT- 2013/07/02 06:00 PHST- 2012/08/27 00:00 [received] PHST- 2013/03/21 00:00 [revised] PHST- 2013/03/22 00:00 [accepted] PHST- 2013/07/02 06:00 [entrez] PHST- 2013/07/03 06:00 [pubmed] PHST- 2014/03/13 06:00 [medline] AID - S1382-6689(13)00076-8 [pii] AID - 10.1016/j.etap.2013.03.017 [doi] PST - ppublish SO - Environ Toxicol Pharmacol. 2013 Sep;36(2):493-500. doi: 10.1016/j.etap.2013.03.017. Epub 2013 Apr 11.