Maternal exposure to tris (2-butoxyethyl) phosphate induces F0 female reproductive toxicity and offspring developmental toxicity in zebrafish

IF 6.2 2区 环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES
Anqi Dong , Wenqian Lei , Weiqi Zhou , Wenwen Li , Jianghua Wang
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引用次数: 0

Abstract

The toxicity of tris (2-butoxyethyl) phosphate (TBOEP) has been extensively investigated because of its prevalence in the environment. Nevertheless, the risk factors associated with maternal transmission are poorly understood. In this study, sexually mature female zebrafish were treated with TBOEP (0, 20, 100, and 500 μg/L) for 30 days and were mated with unexposed males. Reproduction impairment in exposed adults (F0), including retarded gonado-somatic index (GSI), delayed oocyte maturation, inhibition of reproductive behavior, and subfertility was found. The observed impacts on the F0 generation were linked to a marked decrease in 17β-estradiol concentrations and disruptions in the gene expression patterns along the hypothalamic-pituitary-gonadal-liver (HPGL) axis. Moreover, the accumulation of TBOEP in F0 and their embryos (F1) was observed, indicating significant maternal transfer of TBOEP to the offspring. In F1 larvae, a dose-dependent increase in developmental toxicity (decreased heart rate and swimming behavior, increased larval mortality, and deformity) was observed. Additionally, a notable reduction in protein level in eggs and the gene expression of both the hormone/insulin-like growth factor (GH/IGF) and hypothalamic-pituitary-thyroid (HPT) pathways were observed. These results indicated that subacute TBOEP exposure could induce reproductive toxicity in female zebrafish and cause transgenerational toxicity in their offspring via maternal transfer.
母体接触三(2-丁氧乙基)磷酸可诱导斑马鱼雌性生殖毒性和后代发育毒性。
磷酸三(2-丁氧乙基)(TBOEP)的毒性由于其在环境中的普遍存在而得到了广泛的研究。然而,与母体传播有关的危险因素了解甚少。在本研究中,性成熟雌斑马鱼分别用TBOEP(0、20、100和500 μg/L)处理30天,并与未暴露的雄斑马鱼交配。暴露成人(F0)的生殖功能受损,包括性腺-体细胞指数(GSI)迟缓、卵母细胞成熟延迟、生殖行为抑制和生育能力低下。观察到的对F0代的影响与17β-雌二醇浓度的显著降低和下丘脑-垂体-性腺-肝脏(HPGL)轴上基因表达模式的破坏有关。此外,观察到TBOEP在F0及其胚胎(F1)中的积累,表明母体将TBOEP显著转移给后代。在F1幼虫中,观察到剂量依赖性的发育毒性增加(心率和游泳行为降低,幼虫死亡率增加和畸形)。此外,观察到鸡蛋中蛋白质水平和激素/胰岛素样生长因子(GH/IGF)和下丘脑-垂体-甲状腺(HPT)途径的基因表达显著降低。这些结果表明,亚急性TBOEP暴露可诱导雌性斑马鱼的生殖毒性,并通过母体转移对其后代产生跨代毒性。
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来源期刊
CiteScore
12.10
自引率
5.90%
发文量
1234
审稿时长
88 days
期刊介绍: Ecotoxicology and Environmental Safety is a multi-disciplinary journal that focuses on understanding the exposure and effects of environmental contamination on organisms including human health. The scope of the journal covers three main themes. The topics within these themes, indicated below, include (but are not limited to) the following: Ecotoxicology、Environmental Chemistry、Environmental Safety etc.
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