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N-acetylcysteine protects against microcystin-LR-induced endoplasmic reticulum stress and germ cell apoptosis in zebrafish testes
Zhao, Sujuan1; Liu, Ying2; Wang, Fang1; Xu, Dexiang1; Xie, Ping3
2018-08-01
Source PublicationCHEMOSPHERE
ISSN0045-6535
Volume204Pages:463-473
AbstractPrevious studies have shown that microcystin-LR (MCLR) is a reproductive toxicant that induces germ cell apoptosis in the testes, but the underlying mechanisms have not been well understood. In this study, we investigated that MCLR induces germ cell apoptosis is through activation of endoplasmic reticulum (ER) stress and N-acetylcysteine (NAC), an antioxidant could protect against germ cell apoptosis by inhibiting the ER stress. Healthy male zebrafish were intraperitoneally injected with NAC (500 nM), beginning at 2 h before different doses of MCLR (0, 50,100, 200 mu g/kg). As expected, acute MCLR exposure resulted in oxidative stress and germ cell apoptosis in zebrafish testes. Further analysis showed that NAC significantly alleviated MCLR-induced testicular germ cell apoptosis and inhibited the caspase-dependent apoptotic proteins. Meanwhile H&E staining showed that NAC could rescue testicular damage induced by MCLR. Moreover, MCLR induced activation of ER stress which consequently triggered apoptosis in zebrafish testes. Interestingly, NAC was effective in improving the total antioxidant capacity (T-AOC) level and activity of antioxidant enzymes in NAC pretreated groups. NAC significantly attenuated MCLR-induced upregulation of GRP78 in testes. In addition, NAC significantly attenuated MCLR-triggered testicular eiF2s1 and MAPK8 activation, indicating that NAC counteracts MCLR-induced unfolded protein response (UPR) in testes. Taken together, the results observed in this study suggested that ER stress plays a critical role in germ cell apoptosis exposed to MCLR and NAC could protect against apoptosis via inhibiting ER stress in zebrafish testes. (C) 2018 Elsevier Ltd. All rights reserved.
SubtypeArticle
KeywordMicrocystin Endoplasmic Reticulum Stress Apoptosis N-acetylcysteine (Nac) Zebrafish Testes
DOI10.1016/j.chemosphere.2018.04.020
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
Indexed BySCI
Funding OrganizationNational Natural Science Foundation of China(31400455) ; National Natural Science Foundation of China(31400455) ; State Key Laboratory of Freshwater Ecology and Biotechnology(2017FB16) ; State Key Laboratory of Freshwater Ecology and Biotechnology(2017FB16) ; National Natural Science Foundation of China(31400455) ; National Natural Science Foundation of China(31400455) ; State Key Laboratory of Freshwater Ecology and Biotechnology(2017FB16) ; State Key Laboratory of Freshwater Ecology and Biotechnology(2017FB16)
Language英语
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS KeywordNIGROMACULATA IN-VIVO ; OXIDATIVE STRESS ; ANTIOXIDANT RESPONSES ; ORYZIAS-LATIPES ; DIVERSE ORGANS ; ANIMAL-CELLS ; ER ; TOXICITY ; LIVER ; EXPOSURE
WOS IDWOS:000432767300054
Funding OrganizationNational Natural Science Foundation of China(31400455) ; National Natural Science Foundation of China(31400455) ; State Key Laboratory of Freshwater Ecology and Biotechnology(2017FB16) ; State Key Laboratory of Freshwater Ecology and Biotechnology(2017FB16) ; National Natural Science Foundation of China(31400455) ; National Natural Science Foundation of China(31400455) ; State Key Laboratory of Freshwater Ecology and Biotechnology(2017FB16) ; State Key Laboratory of Freshwater Ecology and Biotechnology(2017FB16)
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/50876
Collection淡水生态学研究中心
Affiliation1.Anhui Med Univ, Sch Publ Hlth, Hefei 230032, Anhui, Peoples R China
2.Chinese Acad Sci, Hefei Inst Phys Sci, Key Lab High Magnet Field & Ion Beam Phys Biol, Hefei 230031, Anhui, Peoples R China
3.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Hubei, Peoples R China
Recommended Citation
GB/T 7714
Zhao, Sujuan,Liu, Ying,Wang, Fang,et al. N-acetylcysteine protects against microcystin-LR-induced endoplasmic reticulum stress and germ cell apoptosis in zebrafish testes[J]. CHEMOSPHERE,2018,204:463-473.
APA Zhao, Sujuan,Liu, Ying,Wang, Fang,Xu, Dexiang,&Xie, Ping.(2018).N-acetylcysteine protects against microcystin-LR-induced endoplasmic reticulum stress and germ cell apoptosis in zebrafish testes.CHEMOSPHERE,204,463-473.
MLA Zhao, Sujuan,et al."N-acetylcysteine protects against microcystin-LR-induced endoplasmic reticulum stress and germ cell apoptosis in zebrafish testes".CHEMOSPHERE 204(2018):463-473.
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