Adverse effect of cylindrospermopsin on embryonic development in zebrafish (Danio rerio)

被引：30

作者：

Wang, Linping ^{[1
]}

Wang, Qilong ^{[2
]}

Xiao, Guosheng ^{[2
]}

Chen, Guoliang ^{[1
]}

Han, Lin ^{[2
]}

Hu, Tingzhang ^{[1
]}

机构：

[1] Chongqing Univ, Key Lab Biorheol Sci & Technol, State & Local Joint Engn Lab Vasc Implants, Bioengn Coll,Minist Educ, Chongqing 400030, Peoples R China

[2] Chongqing Three Gorges Univ, Coll Biol & Food Engn, Engn Technol Res Ctr Characterist Biol Resources, Chongqing 404120, Peoples R China

来源：

CHEMOSPHERE | 2020年 / 241卷

关键词：

Cyanobacterial blooms; Cylindrospermopsin; p53; Toxicity; Zebrafish embryos; CYANOBACTERIAL TOXIN CYLINDROSPERMOPSIN; OXIDATIVE STRESS RESPONSES; DNA-DAMAGE; TOXICITY; APOPTOSIS; EXPOSURE; RACIBORSKII; MODEL; IDENTIFICATION; NANOPARTICLES;

D O I：

10.1016/j.chemosphere.2019.125060

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Eutrophication of freshwater bodies increases the occurrence of toxic cyanobacterial blooms. The cyanobacterial toxin cylindrospermopsin (CYN) is receiving great interest due to its increasing presence in waterbodies. However, the toxic effects of CYN on zebrafish development are poorly understood, especially the toxicological mechanism, which is still unclear. In this study, we examined the adverse effects of CYN on embryonic development in zebrafish. CYN (2-2000 nM) exposure decreased embryos survival rate, hatching rate, body length and eye size in a concentration-dependent manner and caused abnormalities in embryo morphology, including pericardial edema, spinal curvature, tail deformity, uninflated swim bladder, cardiac and vascular defects. CYN at concentrations of 20 nM or higher significantly increased ROS level and promoted cell apoptosis in zebrafish embryos. To preliminarily elucidate the potential mechanism of zebrafish developmental toxicity caused by CYN, we examined the expression of oxidative stress- and apoptotic-related genes. CYN could promote the expression of oxidative stress-related genes (SOD], CAT and GPxI) and induce changes in transcriptional levels of apoptotic-related genes (p53, Bax and Bcl-2). Taken together, CYN induced adverse effects on zebrafish embryos development, which may associate with oxidative stress and apoptosis. These outcomes will advance our understanding of CYN toxicity, environmental problems and health hazards caused by climate changes and eutrophication. (C) 2019 Elsevier Ltd. All rights reserved.

引用

页数：10

共 66 条

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