Effects and mechanisms of Bisphenol G on the neurobehavior of zebrafish
LIU Zai-teng1,2,3, LUO Lin-jie3, WANG Tian-cai3, WANG Xing-yu3, QIU Jing3, MU Xi-yan1,3, JIANG Jing-zhe1,2
1. College of Oceanography and Ecological Science, Shanghai Ocean University, Shanghai 201306, China; 2. South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of South China Sea Fishery Resources Exploitation&Utilization, Ministry of Agriculture and Rural Affairs, Guangzhou 510300, China; 3. Key Laboratory of Agrofood Safety and Quality, Ministry of Agriculture and Rural Affairs, Institute of Quality Standards and Testing Technology for Agroproducts, Chinese Academy of Agricultural Sciences, Beijing 100081, China
Abstract：This work evaluated the chronic toxic target and mechanism of bisphenol G (BPG) toward adult zebrafish through chronic exposure. The results showed that BPG exposure resulted in abnormal behavior of zebrafish. In the 50μg/L BPG exposure group, the zebrafish moving distance and switching frequency between the upper and lower zones were significantly reduced, and the accumulative time at the bottom was increased by 22.7%. Both 5and 50μg/L exposures significantly changed the social behavior of zebrafish, with increased social distance by (126.8% and 151.2% of control, respectively), reduced contact time (80.1% and 73.7% of control, respectively), and showed significant anxiety-like behavior and cognitive impairment. Section staining showed injured brain structure and intestinal villi, as well as increased intestinal goblet cell and mucus secretion, indicating potential intestinal inflammation and the development of neurological diseases. Further targeted metabolomics revealed disordered levels of neurotransmitters in the gut and brain, with significant changes in levels of tryptophan, GABA, glutamine, norepinephrine, choline, and histamine. Enrichment analysis of the KEGG pathway showed that phenylalanine, tyrosine and tryptophan biosynthesis; valine, leucine and isoleucine biosynthesis; arginine biosynthesis and phenylalanine metabolism were mainly affected pathways and with gender discriminations. These pathways regulate zebrafish behavior by interfering with the transport and homeostasis of neurotransmitters. In conclusion, BPG induced significant neurobehavioral toxicity and neurotransmitter disorder in the brain and intestine of zebrafish, and the gut-brain axis may be involved in mediating this effect. Key word：bisphenol analogs；bisphenol G；neurotoxicity；Intestinal metabolism；neural behavioral impacts
刘再腾, 罗麟洁, 王天彩, 汪星宇, 邱静, 穆希岩, 姜敬哲. 双酚G对斑马鱼神经行为的影响及机制研究[J]. 中国环境科学, 2024, 44(5): 2733-2741.
LIU Zai-teng, LUO Lin-jie, WANG Tian-cai, WANG Xing-yu, QIU Jing, MU Xi-yan, JIANG Jing-zhe. Effects and mechanisms of Bisphenol G on the neurobehavior of zebrafish. CHINA ENVIRONMENTAL SCIENCECE, 2024, 44(5): 2733-2741.
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