《Chinese Journal of Rehabilitation Theory and Practice》 ›› 2018, Vol. 24 ›› Issue (1): 11-16.doi: 10.3969/j.issn.1006-9771.2018.01.003

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Role of cAMP Response Element Binding Protein/Brain-derived Neurotrophic Factor Signaling Pathway in Tiaoxin Formula Improving Learning and Memory of APP/PS1 Mice

WANG Xiao-wen, DENG Hai-yan, WANG Jian, XU Ying   

  1. 1. a. School of Rehabilitation Science b. Department of Physiology, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
  • Received:2017-10-23 Revised:2017-12-05 Published:2018-01-25 Online:2018-01-31
  • Contact: WANG Jian, XU Ying.E-mail:wangjiantcm@126.com (WANG Jian);ying6122003@aliyun.com (XU Ying)
  • Supported by:
    Shanghai Municipal Natural Science Foundation (No. 13ZR1439700)

Abstract: Objective To observe the changes of cAMP response element binding protein (CREB)/brain-derived neurotrophic factor (BDNF) signaling pathway in the hippocampus of APP/PS1 double transgenic Alzheimer's disease mice, and investigate the effects of Tiaoxin formula on learning and memory.Methods Totally, 54 three-month-old APP/PS1 transgenic mice were randomly divided into model group (n=18), positive control (donepezil) group (n=18) and Tiaoxin formula group (n=18). Another 18 three-month-old C57/BL6 wild mice were chosen as normal group with same strain and same age. All administration groups received relevant medicine. Twelve weeks later, Morris water maze test was used to test the behavior. The real-time quantitative polymerase chain reaction (RT-qPCR) was used to detect the expression of CREB mRNA and BDNF mRNA in hippocampus. Western blotting was used to detect the expression of phosphorylated CREB (p-CREB) and BDNF in hippocampus.Results Compared with the model group, the escape latency significantly shortened (P<0.01), the percentage of staying time in the quadrant of original platform significantly increased (P<0.05), the expression of CREB mRNA and BDNF mRNA in hippocampus significantly increased (P<0.05), and the expression of p-CREB and BDNF protein in hippocampus significantly increased (P<0.01) in Tiaoxin formula group.Conclusion Tiaoxin formula could improve the spatial learning and memory of APP/PS1 double transgenic mice with AD, which might be related to the up-regulation of CREB/BDNF signaling pathway.

Key words: Alzheimer's disease, Tiaoxin formula, Morris water maze, learning and memory, cAMP response element binding protein, brain-derived neurotrophic factor, signaling pathway, mice

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