Journal
CELLULAR AND MOLECULAR NEUROBIOLOGY
Volume 34, Issue 3, Pages 403-408Publisher
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s10571-014-0025-1
Keywords
Antidepressant; Brain-derived neurotrophic factor; Chronic unpredictable mild stress; Serotonin; Piperine
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Funding
- Zhejiang Provincial Natural Science Foundation of China [Y2110307]
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Previous studies in our laboratory have demonstrated that piperine produced antidepressant-like action in various mouse models of behavioral despair, which was related to the serotonergic system. The present study aimed to examine the behavioral and biochemical effects of piperine in rats exposed to chronic unpredictable mild stress (CUMS). The results showed that CUMS caused depression-like behavior in rats, as indicated by the significant decrease in sucrose consumption and increase in immobility time in the forced swim test. In addition, it was found that serotonin (5-HT) and brain-derived neurotrophic factor (BDNF) contents in the hippocampus and frontal cortex were significantly decreased in CUMS-treated rats. Treating the animals with piperine significantly suppressed behavioral and biochemical changes induced by CUMS. The results suggest that piperine produces an antidepressant-like effect in CUMS-treated rats, which is possibly mediated by increasing 5-HT and BDNF contents in selective brain tissues.
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