electroacupuncture ameliorates learning and memory and improves synaptic plasticity via activation of the pka/creb signaling pathway in cerebral hypoperfusion
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ID: 223079
2016
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Abstract
Electroacupuncture (EA) has shown protective effects on cognitive decline. However, the underlying molecular mechanisms are ill-understood. The present study was undertaken to determine whether the cognitive function was ameliorated in cerebral hypoperfusion rats following EA and to investigate the role of PKA/CREB pathway. We used a rat 2-vessel occlusion (2VO) model and delivered EA at Baihui (GV20) and Dazhui (GV14) acupoints. Morris water maze (MWM) task, electrophysiological recording, Golgi silver stain, Nissl stain, Western blot, and real-time PCR were employed. EA significantly (1) ameliorated the spatial learning and memory deficits, (2) alleviated long-term potentiation (LTP) impairment and the reduction of dendritic spine density, (3) suppressed the decline of phospho-CREB (pCREB) protein, brain-derived neurotrophic factor (BDNF) protein, and microRNA132 (miR132), and (4) reduced the increase of p250GAP protein of 2VO rats. These changes were partially blocked by a selective protein kinase A (PKA) inhibitor, N-[2-(p-bromocinnamylamino)ethyl]-5-isoquinoline-sulfonamide (H89), suggesting that the PKA/CREB pathway is potentially involved in the effects of EA. Moreover, any significant damage to the pyramidal cell layer of CA1 subregion was absent. These results demonstrated that EA could ameliorate learning and memory deficits and alleviate hippocampal synaptic plasticity impairment of cerebral hypoperfusion rats, potentially mediated by PKA/CREB signaling pathway.
| Reference Key |
zheng2016evidence-basedelectroacupuncture
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|---|---|
| Authors | ;Cai-Xia Zheng;Min Lu;Ya-Bi Guo;Feng-Xia Zhang;Hua Liu;Feng Guo;Xiao-Lin Huang;Xiao-Hua Han |
| Journal | ACS applied materials & interfaces |
| Year | 2016 |
| DOI |
10.1155/2016/7893710
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| URL | |
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