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Reactive oxygen species participate in liver function recovery during compensatory growth in zebrafish (Danio rerio)

Author:
Jia, Jirong, Zhang, Yazhou, Yuan, Xi, Qin, Jingkai, Yang, Guokun, Yu, Xiaozheng, Wang, Bin, Sun, Caiyun, Li, Wensheng
Source:
Biochemical and biophysical research communications 2018 v.499 no.2 pp. 285-290
ISSN:
0006-291X
Subject:
Danio rerio, compensatory growth, liver, liver function, mitochondria, oxidative phosphorylation, reactive oxygen species, signal transduction, superoxide dismutase
Abstract:
Compensatory growth (CG) is defined as a phase of accelerated growth when the disadvantageous environment is improved, accompanied by metabolic adjustment. Here, we report that hepatic oxidative phosphorylation (OXPHOS) activity was enhanced during compensatory growth in zebrafish. Mitochondrial metabolism enabled the generation of reactive oxygen species (ROS), which activated the nrf2 (nuclear factor-erythroid 2-related factor 2) signaling pathway, as well as the mTOR signaling pathway. Tempol (a superoxide dismutase mimetic) treatment blocked ROS signaling in the liver as well as CG in zebrafish. These results demonstrated that mitochondrial ROS signaling are essential for the occurrence of compensatory growth in zebrafish.
Agid:
5925392