The effect of Piper laetispicum extract (EAE-P) during chronic unpredictable mild stress based on interrelationship of inflammatory cytokines, apoptosis cytokines and neurotrophin in the hippocampus

BMC Complementary and Alternative Medicine

ShengLi Pan³  Juan Liu²  Macheng Yan¹  Jian Chen³  Haixing Shen³  Hongrui Liu³  Xueru Shi³  Yun Kang³  Di Jin²  Hui Xie³ 

[1] Pharmaceutical Preparation Section, Punan Hospital, Shanghai 200127, China;Department of Pharmacognosy, College of Pharmacy, Jiamusi University, Jiamusi 154007, China;School of Pharmacy, Fudan University, Shanghai 201203, China

关键词: Hippocampus;    Antidepressant;    Ethyl acetate extract;    Piperaceae;    Piper laetispicum;   

Others  :  1219993
DOI  :  10.1186/s12906-015-0747-8

 received in 2014-09-25, accepted in 2015-06-24,  发布年份 2015

【 摘 要 】

Backgroud

The Piper laetispicum C.DC. (Piperaceae) is a traditionally used herb in China for invigorating circulation and reducing stasis, detumescence and analgesia, which is distributed in the southern part of China and the southeastern part of Asia. Previous studies demonstrated that the ethyl acetate extract (EAE-P) of P. laetispicum possesses a significant antidepressant-like effect at doses higher than 60 mg/kg in Kunming (KM) mice, and this effect was not due to an increase in locomotive activity.

Methods

To research this mechanism, in the present study, the chronic unpredictable mild stress (CUMS) model in Sprague–Dawley rats was used to further elucidate behavioral changes and corresponding changes in inflammatory cytokines (TNF-α, IL-6, IL-10), apoptosis cytokines (P53, Bax, Bcl2, caspase-3) and neurotrophin (BDNF) in the hippocampus of EAE-P treatment animals.

Results and conclusions

The results suggest that EAE-P is beneficial to the behavioral outcome of the CUMS model animals, and decreased amounts of inflammatory cytokine IL-6 contributed to the antidepressant-like activation of EAE-P in every dosage group (15, 30, 60 mg/kg). In the low dosage group, down-regulated apoptosis cytokine p53 is associated with EAE-P effect, but it is inflammatory cytokine TNF-α that is related to the effect of EAE-P in the high dosage group. Meanwhile, the P53-dependent antiapoptotic effect of EAE-P may not be through Bcl-2 and Bax modulation. Furthermore, EAE-P showed up-regulated expression of brain-derived neurotrophic factor (BDNF) mRNA and down-regulated apoptosis cytokine caspase-3 mRNA, which was the same change tendency as with Fluoxetine.

【 授权许可】

   
2015 Xie et al.

【 图 表 】

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