当前位置: 首页 > 文章 > 环境雌激素E2、o,p′-DDT和抗雌激素TAM对斑马鱼(Danio rerio)胚胎的二元联合毒性效应(英文) 上海交通大学学报(农业科学版) 2016,34 (5) 41-48
Position: Home > Articles > Effects of Binary Mixtures of Environment Estrogens E2,o,p'-DDT and Antiestrogen TAM on Zebrafish(Danio rerio) Embryos Journal of Shanghai Jiaotong University(Agricultural Science) 2016,34 (5) 41-48

环境雌激素E2、o,p′-DDT和抗雌激素TAM对斑马鱼(Danio rerio)胚胎的二元联合毒性效应(英文)

作  者:
吕晶;向霄;吴诗剑;钟玲盈;詹深山
单  位:
上海交通大学农业与生物学院;贵州大学化学与化工学院;上海交通大学农业与生物学院农业部都市农业(南方)重点实验室上海市环境科学研究院上海市环境监测中心上海应用技术大学化学与环境工程学院;上海市环境监测中心
关键词:
内分泌干扰物;复合效应;斑马鱼胚胎;繁殖
摘  要:
为了探究雌激素与抗雌激素类化合物的联合毒性效应,将斑马鱼胚胎暴露于雌激素17β-雌二醇(E2)和o,p′-DDT,抗雌激素它莫昔芬(TAM)以及雌激素(E2、DDT)与抗雌激素(TAM)的二元混合物96h,观察其形态学变化(孵化率、畸形率和孵化时间)以及测定雌激素效应相关基因(VTG1,VTG2和ERα)的转录水平。结果显示,暴露于E2(0.25μg/L),o,p′-DDT(100μg/L)与TAM(10,50,250μg/L)的二元混合物组可致斑马鱼的畸形率上升、孵化率下降、孵化时间延长,混合暴露组与单独暴露组差异显著(P<0.05)。例如当E2浓度为0.25μg/L,TAM浓度为50μg/L,混合暴露组孵化率为57.2%,显著低于单独暴露于E2的82.5%以及单独暴露于TAM的90.4%。在胚胎发育形态学水平上,未观察到二元混合物组繁殖毒性明显减低的现象;在基因转录水平上,TAM对雌激素并不是单纯的拮抗作用,其作用随暴露浓度不同而有所改变。实验表明,抗雌激素TAM与雌激素E2及DDT的混合暴露提高了对斑马鱼的毒害作用。
译  名:
Effects of Binary Mixtures of Environment Estrogens E2,o,p'-DDT and Antiestrogen TAM on Zebrafish(Danio rerio) Embryos
作  者:
Lü Jing;XIANG Xiao;WU Shi-jian;ZHONG Ling-ying;ZHAN Shen-shan;ZHANG Dong-wei;DU Gao-shang;XIA Bing;WANG Lu-mei;Key Laboratory of Urban Agriculture(South)of Ministry of Agriculture,School of Agriculture and Biology,Shanghai Jiaotong University;Shanghai Academy of Environmental Science;Shanghai Environmental Monitoring Center;School of Chemical and Environmental Engineering,Shanghai Institute of Technology;
关键词:
endocrine-disrupting chemicals;;combined effect;;zebrafish embryo;;reproduction
摘  要:
Zebrafish(Danio rerio)embryos were exposed to 17β-estradiol(E2),o,p′-DDT and tamoxifen(TAM)to evaluate the combined effects of endocrine disrupting chemicals(EDCs)on animal reproduction.Hatchability,gross abnormalities rate,hatching time and expressions of estrogen-responsive genes of embryos were observed after 96 hours of exposure.Embryos exposed to compounds with E2(0.25μg/L)or TAM(10,50,250μg/L)or binary mixtures of o,p′-DDT(100μg/L)and TAM(10,50,250μg/L)resulted in significant impairments in reproductive performance compared to embryos exposed to one kind of EDC.For example,hatchability of mixture group E2(0.25μg/L)and TAM(50μg/L)was 57.2%,significantly lower than that of embryos exposed to E2alone(82.5%)or TAM alone(90.4%).TAM cannot neutralize the effects of E2 and o,p′-DDT on embryo morphological development.On gene transcription level,TAM is not entirely antagonistic against estrogen,instead,the property it behaves depends on its concentration.Our observations illustrate that binary mixtures can make a rise to toxicity and reproductive harm to zebrafish.The possibility that the reproduction effects of estrogen can be neutralized by antiestrogen in aquatic organisms should be questioned.

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