Exposure to N-(1,3-dimethylbutyl)-N '-phenyl-p-phenylenediamine (6PPD) affects the growth and development of zebrafish embryos/larvae
文献类型： 外文期刊
作者： Peng, Weijuan 1 ; Liu, Chunsheng 2 ; Chen, Daqing 1 ; Duan, Xinbin 1 ; Zhong, Liqiao 1 ;
作者机构： 1.Chinese Acad Fishery Sci, Yangtze River Fisheries Res Inst, Minist Agr, Fishery Resources & Environm Sci Expt Stn Upper M, Wuhan 430223, Hubei, Peoples R China
2.Huazhong Agr Univ, Coll Fisheries, Wuhan 430070, Hubei, Peoples R China
关键词： Zebrafish; 6PPD; Growth hormone; insulin-like growth factor p (GH; IGF) axis; Hypothalamic-pituitary-thyroid (HPT) axis
期刊名称：ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY （ 影响因子：7.129； 五年影响因子：7.284 ）
ISSN： 0147-6513
年卷期： 2022 年 232 卷
页码：
收录情况： SCI
摘要： N-(1,3-dimethylbutyl)-N & PRIME;-phenyl-p-phenylenediamine (6PPD) is used as a ubiquitous rubber antioxidant worldwide and has been shown to be potentially toxic to aquatic organisms. In this study, zebrafish embryos were exposed to 6PPD for five days starting at two hours post-fertilization at concentrations of 0, 0.0022, 0.022, and 0.22 mg/L to investigate its effects on embryonic development, the growth hormone/insulin-like growth factor (GH/IGF) axis, and the hypothalamic-pituitary-thyroid (HPT) axis. The results showed that the 96 h LC50 of 6PPD was 2.2 mg/L. 6PPD exposure decreased hatchability, lowered autonomous movement, reduced body length in zebrafish embryos and caused deformities. The hormones levels and the expression of genes related to GH/IGF and HPT axis were altered after exposure to 6PPD in zebrafish larvae. These results indicated that the GH/IGF and HPT axis was disturbed. Moreover, treatment of 6PPD produced oxidative stress in zebrafish embryos. Overall, the present study thus demonstrated that exposure to 0.22 mg/L 6PPD caused developmental toxicity and disrupted the GH/IGF and HPT axis of zebrafish, which could be responsible for developmental impairment and growth inhibition.
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