Antidepressant-like effects of fenofibrate in mice via the hippocampal brain-derived neurotrophic factor signalling pathway

作者：Jiang, Bo^*; Wang, Ying-Jie; Wang, Hao; Song, Lu; Huang, Chao; Zhu, Qing; Wu, Feng; Zhang, Wei

来源：British Journal of Pharmacology, 2017, 174(2): 177-194.

DOI：10.1111/bph.13668

• ALPHA AGONIST FENOFIBRATE
• RESPONSE ELEMENT-BINDING
• SOCIAL DEFEAT STRESS
• CHRONIC MILD STRESS
• CONCISE GUIDE
• PPAR-ALPHA
• ANIMAL-MODELS
• MOLECULAR NEUROBIOLOGY
• GENDER-DIFFERENCES
• FACTOR BDNF

BACKGROUND AND PURPOSE
Depression is a neuropsychiatric disorder accompanied by a decrease in the brain-derived neurotrophic factor (BDNF) signalling cascade in the hippocampus. Fenofibrate is a selective agonist of PPAR-alpha. In this study, we investigated the antidepressant-like effects of fenofibrate in C57BL/6J mice.
EXPERIMENTAL APPROACH
The antidepressant-like effects of fenofibrate were first identified in the forced swim test (FST) and tail suspension test (TST), and then assessed in the chronic social defeat stress (CSDS) model. The changes in the hippocampal BDNF signalling pathway and adult hippocampal neurogenesis after CSDS and fenofibrate treatment were further investigated. A PPAR-alpha inhibitor, cannabinoid system inhibitors and BDNF signalling inhibitors were also used to determine the antidepressant mechanisms of fenofibrate.
KEY RESULTS
Fenofibrate administration exhibited antidepressant-like effects in the FST and TST without affecting the locomotor activity of mice. Chronic fenofibrate treatment also prevented the depressive-like symptoms induced by CSDS. Moreover, fenofibrate restored the CSDS-induced decrease in the hippocampal BDNF signalling cascade and adult hippocampal neurogenesis. The antidepressant-like effects of fenofibrate could be blocked by a PPAR-alpha inhibitor and BDNF signalling inhibitors.
CONCLUSIONS AND IMPLICATIONS
Taken together, these results suggest that fenofibrate has antidepressant-like effects mediated through the promotion of the hippocampal BDNF signalling cascade.

• 出版日期2017-1
• 单位南通大学