PMID- 31884362 OWN - NLM STAT- MEDLINE DCOM- 20201224 LR - 20201224 IS - 1873-3336 (Electronic) IS - 0304-3894 (Linking) VI - 386 DP - 2020 Mar 15 TI - Microcystin-LR triggers different endoplasmic reticulum stress pathways in the liver, ovary, and offspring of zebrafish (Danio rerio). PG - 121939 LID - S0304-3894(19)31893-X [pii] LID - 10.1016/j.jhazmat.2019.121939 [doi] AB - The existence of microcystins (MCs), the secondary metabolite of cyanobacteria, has become a growing public health concern. Previous researches have proved that MCs can trigger endoplasmic reticulum stress (ERS), but the underlying mechanisms remain unclear. In the present study, adult female zebrafish were exposed to MC-LR (0, 1, 5 and 20 mug/L) for 30 d, and the offspring derived from the treated females and healthy males were cultured in water without MC-LR until 96 h post fertilization (hpf). Our data suggested that MC-LR causes a significant increase in the eif2s1a, atf4, and eif2ak3 transcription levels in the liver and ovary. The mRNA levels of atf4, atf6, bcl-2, hspa5, eif2s1a and eif2ak3 upregulated notably in the offspring. JNK phosphorylation level and cleaved-caspase3 protein expression elevated obviously in the liver and ovary, but had no remarkable change in the offspring. Furthermore, TUNEL results showed that MC-LR significantly induced apoptosis in the liver and ovary, while acridine orange (AO) staining indicated that MC-LR did not cause abnormal apoptosis in offspring. Concisely, the present study indicated that MC-LR leads to apoptosis through different ERS pathways in the liver, ovary and offspring, and also provides a new perspective for understanding the apoptosis caused by MC-LR. CI - Copyright (c) 2019 Elsevier B.V. All rights reserved. FAU - Zhan, Chunhua AU - Zhan C AD - College of Fisheries, Huazhong Agricultural University, Hubei Provincial Engineering Laboratory for Pond Aquaculture, Wuhan 430070, China. FAU - Liu, Wanjing AU - Liu W AD - College of Fisheries, Huazhong Agricultural University, Hubei Provincial Engineering Laboratory for Pond Aquaculture, Wuhan 430070, China. FAU - Zhang, Feng AU - Zhang F AD - College of Fisheries, Huazhong Agricultural University, Hubei Provincial Engineering Laboratory for Pond Aquaculture, Wuhan 430070, China. FAU - Zhang, Xuezhen AU - Zhang X AD - College of Fisheries, Huazhong Agricultural University, Hubei Provincial Engineering Laboratory for Pond Aquaculture, Wuhan 430070, China. Electronic address: xuezhen@mail.hzau.edu.cn. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20191219 PL - Netherlands TA - J Hazard Mater JT - Journal of hazardous materials JID - 9422688 RN - 0 (Marine Toxins) RN - 0 (Microcystins) RN - 0 (Water Pollutants, Chemical) RN - EQ8332842Y (cyanoginosin LR) SB - IM MH - Animals MH - Apoptosis/drug effects MH - Embryo, Nonmammalian/*drug effects/metabolism/pathology MH - Endoplasmic Reticulum Stress/*drug effects MH - Female MH - Liver/*drug effects/metabolism/pathology MH - Marine Toxins/*toxicity MH - Microcystins/*toxicity MH - Ovary/*drug effects/metabolism/pathology MH - Water Pollutants, Chemical/*toxicity MH - Zebrafish/*metabolism OTO - NOTNLM OT - Apoptosis OT - Microcystins OT - Organ-specific OT - Parental transmission OT - Zebrafish COIS- Declaration of Competing Interest The authors declare no conflict of interest. EDAT- 2019/12/31 06:00 MHDA- 2020/12/29 06:00 CRDT- 2019/12/30 06:00 PHST- 2019/09/18 00:00 [received] PHST- 2019/11/12 00:00 [revised] PHST- 2019/12/17 00:00 [accepted] PHST- 2019/12/31 06:00 [pubmed] PHST- 2020/12/29 06:00 [medline] PHST- 2019/12/30 06:00 [entrez] AID - S0304-3894(19)31893-X [pii] AID - 10.1016/j.jhazmat.2019.121939 [doi] PST - ppublish SO - J Hazard Mater. 2020 Mar 15;386:121939. doi: 10.1016/j.jhazmat.2019.121939. Epub 2019 Dec 19.