Abstract
Rationale
Current anti-depressants are clinically effective only after several weeks of administration and always produce side effects.
Objectives
WY14643 is a selective agonist of peroxisome proliferator-activated receptor-α with neuroprotective and neurotrophic effects. Here, we investigated the anti-depressant effects of WY14643 in mice models of depression.
Methods
We assessed the anti-depressant effects of WY14643 in the forced swim test (FST), tail suspension test (TST) and chronic social defeat stress (CSDS) model. Western blotting and immunohistochemistry studies were further performed to detect the effects of WY14643 on the brain-derived neurotrophic factor (BDNF) signaling pathway and hippocampal neurogenesis. The anti-BDNF antibody, BDNF signaling inhibitor, and tryptophan hydroxylase inhibitor were also used to explore the anti-depressant mechanisms of WY14643.
Results
WY14643 exhibited robust anti-depressant effects in the FST and TST and also protected against the CSDS stress in mice models. Moreover, WY14643 reversed the stress-induced elevation of corticosterone, deficiency of BDNF signaling pathway, and hippocampal neurogenesis. Blockade of BDNF signaling cascade, not the monoaminergic system, abolished all the anti-depressant effects of WY14643.
Conclusions
These data provide the first evidence that WY14643 exerts anti-depressant-like activity through promoting the BDNF signaling pathway.
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Abbreviations
- AKT:
-
Protein kinase B
- ANOVA:
-
Analysis of variance
- BDNF:
-
Brain-derived neurotrophic factor
- CMS:
-
Chronic mild stress
- CREB:
-
cAMP response element-binding protein
- CSDS:
-
Chronic social defeat stress
- DCX:
-
Doublecortin
- DG:
-
Dendrite gyrus
- ERK:
-
Extracellular regulated protein kinase
- FST:
-
Forced swimming test
- mPFC:
-
Medial prefrontal cortex
- PCPA:
-
p-Chlorophenylalanine methyl ester
- PPAR-α:
-
Peroxisome proliferator-activated receptor-α
- 5-HT:
-
Serotonin
- SSRIs:
-
Selective serotonin reuptake inhibitors
- TMP:
-
Tetramethylpyrazine
- TrkB:
-
Tyrosine kinase B
- TST:
-
Tail suspension test
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Acknowledgments
This work was supported by the National Natural Science Foundation of China to Professor Wei Zhang (No. 81070197) and the Priority Academic Program Development of Jiangsu Higher Education Institutions.
Author contributions
Bo Jiang, Chao Huang, and Wei Zhang conceived and designed the study. Bo Jiang, Chao Huang, and Li-Juan Tong performed the experiments. Bo Jiang and Wei Zhang wrote the manuscript. Bo Jiang, Qing Zhu, and Wei Zhang reviewed and edited the manuscript. All authors read and approved the manuscript.
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Jiang, B., Huang, C., Zhu, Q. et al. WY14643 produces anti-depressant-like effects in mice via the BDNF signaling pathway. Psychopharmacology 232, 1629–1642 (2015). https://doi.org/10.1007/s00213-014-3802-0
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DOI: https://doi.org/10.1007/s00213-014-3802-0