Acute toxic responses of embryo-larval zebrafish to zinc pyrithione (ZPT) reveal embryological and developmental toxicity.

Ye Zhao,Yuyang Liu,Jing Sun,Hongtao Sha,Yu Yang,Q. Ye,Qi Yang,Baoqi Huang,Yadong Yu,He Huang

Published 2018 in Chemosphere

ABSTRACT

Zinc pyrithione (ZPT) is widely used in industrial and human daily life, due to its broad antimicrobial spectrum activity. Persistent accumulation of ZTP in the aquatic environment and bioaccumulation in the living organisms attracts more and more attention. However, only very limited information is available so far for the evaluation of systematic toxicity effects of ZPT on multiple organs development. This study intends to deepen our knowledge about the potential toxicity elicited by ZPT by assessing its acute effects on zebrafish (Danio rerio) through morphological, histological and molecular investigations. It has been verified that ZPT exhibits a broad spectrum of toxicity which causes growth retardation and tissue pathological and physiology alternations in heart, liver, eye, notochord, kidney and other organisms of zebrafish. The acute toxicity values of LC50 (95% CI) 96-h is calculated as 0.073 μM. Furthermore, the organ toxicity was verified due to up-regulation of expression of biomarker genes related to organ function and development. In sum, this study demonstrats systematic acute embryological and developmental toxicity of the ZPT on zebrafish embryos/larvae.

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