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	Exposure of Sebastiscus marmoratus embryos to pyrene results in neurodevelopmental defects and disturbs related mechanisms
	He, Chengyong ; Wang, Chonggang ; Wang ZG(王重刚) ; Li, Bowen ; Wu, Meifang ; Geng, Hong ; Chen, Yixin ; Chen YX(陈奕欣) ; Zuo, Zhenghong ; Zuo ZH(左正宏)
	2012-07-15
关键词	PAHs Neurodevelopmental defect GAP-43 NMDAR Sebastiscus marmoratus
英文摘要	Polycyclic aromatic hydrocarbons (PAHs) are widespread environmental contaminants, which are known to be carcinogenic and teratogenic. These compounds cause a range of macroscopic malformations, particularly to the craniofacial apparatus and cardiovascular system during vertebrate development. However, little is known concerning microscopic effects, especially on the sensitive early life stages or on the molecular basis of developmental neurotoxicity. Using the rockfish (Sebastiscus marmoratus), we explored the neurodevelopmental defects caused by early-life exposure to environmentally relevant concentrations of pyrene, a 4-ring PAH. The results showed that pyrene substantially disrupted the cranial innervation pattern and caused deficiency of motor nerves. The expression of a protein associated with axon growth, growth associated protein 43, was decreased in the central nervous system after treatment with pyrene. N-methyl-D-aspartate receptor (NMDAR) plays a vital role in a variety of processes, including neuronal development, synaptic plasticity, and neuronal survival and death. Our results showed that the expression of Ca2+/calmodulin dependent kinase II and cAMP-response element-binding, which belong to the NMDAR pathway, were increased in a dose-dependent manner after exposure to pyrene. Acetylcholine, an important neurotransmitter which is known to suppress retinal cells neurite outgrowth, was increased by pyrene exposure. Nitric oxide (NO) acts as an activity-dependent retrograde signal that can coordinate axonal targeting and synaptogenesis during development. The level of NO was decreased in a dose-dependent manner following exposure to pyrene. Taken together, the defects in neurodevelopment and the damage to related mechanisms provided the basis for a better understanding of the neurotoxic effects of pyrene. (C) 2012 Elsevier B.V. All rights reserved.; National Natural Science Foundation of China [20977071]; Ocean Public Welfare Scientific Research Special Appropriation Project [201005016]; Program for Changjiang Scholars and Innovative Research Team in University [IRT0941]
语种	英语
出版者	ELSEVIER SCIENCE BV
内容类型	期刊论文
源URL	[http://dx.doi.org/10.1016/j.aquatox.2012.03.009]
专题	生命科学－已发表论文
推荐引用方式 GB/T 7714	He, Chengyong,Wang, Chonggang,Wang ZG,et al. Exposure of Sebastiscus marmoratus embryos to pyrene results in neurodevelopmental defects and disturbs related mechanisms[J],2012.
APA	He, Chengyong.,Wang, Chonggang.,王重刚.,Li, Bowen.,Wu, Meifang.,...&左正宏.(2012).Exposure of Sebastiscus marmoratus embryos to pyrene results in neurodevelopmental defects and disturbs related mechanisms..
MLA	He, Chengyong,et al."Exposure of Sebastiscus marmoratus embryos to pyrene results in neurodevelopmental defects and disturbs related mechanisms".(2012).

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