PMID- 25872712 OWN - NLM STAT- MEDLINE DCOM- 20150915 LR - 20151119 IS - 1001-0742 (Print) IS - 1001-0742 (Linking) VI - 30 DP - 2015 Apr 1 TI - Sodium fluoride induces apoptosis through reactive oxygen species-mediated endoplasmic reticulum stress pathway in Sertoli cells. PG - 81-9 LID - S1001-0742(15)00056-X [pii] LID - 10.1016/j.jes.2014.11.004 [doi] AB - Excessive fluoride exposure is known to contribute to reproductive system dysfunction, ultimately leading to pathological damage and apoptosis in cells. Although both oxidative and endoplasmic reticulum (ER) stresses have been implicated in fluorosis, the signaling pathways and their roles in sodium fluoride (NaF)-induced apoptosis of Sertoli cells have been sparsely described. In this study, oxidative damage, ER stress, and apoptosis were analyzed after Sertoli cells were treated with varying doses of NaF for 24hr. Moreover, the antioxidant N-acetylcysteine (NAC) and pro-apoptotic transcription factor CHOP knockdown were used to clarify the precise interplay between reactive oxygen species (ROS), ER stress and their roles in NaF-induced apoptosis in Sertoli cells. The present study indicated that NaF significantly decreased cell viability and induced apoptosis in Sertoli cells. In addition, NaF exposure facilitated the accumulation of ROS and increased nuclear translocation of nuclear factor erythroid 2-related factor 2 (Nrf2) in Sertoli cells. Treatment with NAC caused remarkable recovery from these NaF-induced responses. Meanwhile, excessive NaF triggered ER stress as evidenced by up-regulated glucose-regulated protein 78 kDa (GRP78), PKR-like ER kinase (PERK), phosphorylation of eukaryotic translation initiation factor 2alpha (p-eIF2alpha) and CCAAT/enhancer-binding protein-homologous protein (CHOP), without affecting total eukaryotic translation initiation factor 2alpha (eIF2alpha). NAC effectively blocked the activation of ER stress, suggesting that NaF-induced ROS is an early event that triggers ER stress. Taken together, the results demonstrate that the ROS-mediated ER stress pathway is the crucial mechanistic event involved in NaF-induced apoptosis of Sertoli cells. CI - Copyright (c) 2015. Published by Elsevier B.V. FAU - Yang, Yang AU - Yang Y AD - Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou 450001, China. Electronic address: xuballyy@163.com. FAU - Lin, Xinwei AU - Lin X AD - Department of Nephrology, 152 Hospital of PLA, Pingdingshan 467000, China. FAU - Huang, Hui AU - Huang H AD - Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou 450001, China. FAU - Feng, Demin AU - Feng D AD - Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou 450001, China. FAU - Ba, Yue AU - Ba Y AD - Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou 450001, China. FAU - Cheng, Xuemin AU - Cheng X AD - Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou 450001, China. FAU - Cui, Liuxin AU - Cui L AD - Department of Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou 450001, China. Electronic address: xuballyy@163.com. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20150224 PL - Netherlands TA - J Environ Sci (China) JT - Journal of environmental sciences (China) JID - 100967627 RN - 0 (Biomarkers) RN - 0 (Ddit3 protein, rat) RN - 0 (Reactive Oxygen Species) RN - 147336-12-7 (Transcription Factor CHOP) RN - 8ZYQ1474W7 (Sodium Fluoride) RN - WYQ7N0BPYC (Acetylcysteine) SB - IM MH - Acetylcysteine/metabolism MH - Animals MH - Apoptosis/*drug effects MH - Biomarkers/metabolism MH - Dose-Response Relationship, Drug MH - *Endoplasmic Reticulum Stress MH - Gene Knockdown Techniques MH - Male MH - Oxidative Stress/drug effects MH - Rats MH - *Reactive Oxygen Species MH - Sertoli Cells MH - Sodium Fluoride/*toxicity MH - Testis MH - Transcription Factor CHOP/genetics/metabolism OTO - NOTNLM OT - Apoptosis OT - Endoplasmic reticulum stress OT - Reactive oxygen species OT - Sertoli cell OT - Sodium fluoride EDAT- 2015/04/16 06:00 MHDA- 2015/09/16 06:00 CRDT- 2015/04/16 06:00 PHST- 2014/10/22 00:00 [received] PHST- 2014/10/28 00:00 [revised] PHST- 2014/11/11 00:00 [accepted] PHST- 2015/04/16 06:00 [entrez] PHST- 2015/04/16 06:00 [pubmed] PHST- 2015/09/16 06:00 [medline] AID - S1001-0742(15)00056-X [pii] AID - 10.1016/j.jes.2014.11.004 [doi] PST - ppublish SO - J Environ Sci (China). 2015 Apr 1;30:81-9. doi: 10.1016/j.jes.2014.11.004. Epub 2015 Feb 24.