Psychological stress induced zinc accumulation and up-regulation of ZIP14 and metallothionein in rat liver

BMC Gastroenterology

Research Article

Yuanyuan Zheng¹  Jianxin Qian²  Hui Shen³  Yingjie Li³  Xue Tian³  Zhilei Shen³  Liping Tao³  Xiao Dou³ 

[1] Department of Immunology, Second Military Medical University, No. 800 Xiangyin Road, 200433, Shanghai, China;Department of Medical Oncology, Changzheng Hospital, No. 64 Hetian Road, 200070, Shanghai, China;Department of Naval Hygiene, Second Military Medical University, 800 Xiangyin Road, 200433, Shanghai, PR, China;

关键词: Psychological stress;    Zinc;    ZIP14;    Metallothionein;    Liver;    Corticosterone;   

DOI  :  10.1186/1471-230X-14-32

 received in 2013-05-03, accepted in 2014-02-13,  发布年份 2014

来源: Springer

【 摘 要 】

BackgroundZinc is necessary for normal liver function; and vice versa, the liver plays a central role in zinc homeostasis. The aim of present study is to assess the effects of repeated psychological stress (PS) on the zinc metabolism and related mechanism involved in zinc homeostasis in rat liver.MethodsIn present study, we used communication box to create PS model and investigated the serum corticosterone (CORT), zinc level in serum and liver, liver metallothionein (MT) content and ZRT/IRT-like Protein 14 (ZIP14) mRNA expression.ResultsThe results showed that the serum CORT level increased and serum zinc level decreased significantly after 7 d and 14 d PS treatment. Meanwhile, zinc and MT contents in liver were elevated after 14 d PS exposure, while those in 7 d PS exposure group did not change. ZIP14 mRNA was expressed markedly at 7 d after the onset of PS, while Zip14 mRNA expression in the liver after 14 d PS exposure reached normal level compared with control group.ConclusionsThe results suggest that PS exposure could induce hypozincemia, which might be related to liver zinc accumulation because of high level of MT through glucocorticoid-mediated MT synthesis and ZIP14 expression induced by interleukin-6.

【 授权许可】

Unknown   
© Tian et al.; licensee BioMed Central Ltd. 2014. This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited.