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Electroacupuncture Ameliorates Learning and Memory via Activation of the CREB Signaling Pathway in the Hippocampus to Attenuate Apoptosis after Cerebral Hypoperfusion

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单位: [1]Huazhong Univ Sci & Technol, Tongji Med Coll, Tongji Hosp, Dept Rehabil Med, Wuhan 430030, Peoples R China [2]Sun Yat Sen Univ, Affiliated Hosp 3, Dept Rehabil Med, Guangzhou 510630, Guangdong, Peoples R China
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Studies have shown that electroacupuncture (EA) ameliorates learning and memory after ischemic injury. However, there have been few studies elucidating the mechanisms of EA on learning and memory in cerebral hypoperfusion. In this study, we explored the cAMP response element-binding protein (CREB) signaling pathway-mediated antiapoptotic action involved in EA-induced improvement of learning and memory. EA at GV20 and GV14 acupoints was applied in cerebral hypoperfusion rats. A Morris watermaze task was performed, and the immunoreactivities of pCREB, Bcl-2, and Bax in the hippocampal CA1 area were evaluated by the Western blotting technique. Our findings indicated that (1) EA ameliorated spatial learning and memory impairment in cerebral hypoperfusion rats; (2) EA increased the immunoreactivities of pCREB and Bcl-2 and decreased the immunoreactivity of Bax; (3) intracerebroventricular administration of H89 (the inhibitor of protein kinase A) blocked EA-induced, pCREB-mediated antiapoptotic action and improved learning and memory. These results suggest that EA can ameliorate learning and memory via activation of the CREB signaling pathway in the hippocampus to attenuate apoptosis after cerebral hypoperfusion.

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出版当年[2012]版:
大类 | 3 区 医学
小类 | 2 区 全科医学与补充医学
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Q1 INTEGRATIVE & COMPLEMENTARY MEDICINE
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第一作者单位: [1]Huazhong Univ Sci & Technol, Tongji Med Coll, Tongji Hosp, Dept Rehabil Med, Wuhan 430030, Peoples R China
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