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Depression: 21st Century Solutions + The Dark Side of Wheat

Abstract Title:

Electroacupuncture alleviates nerve injury after cerebra ischemia in rats through inhibiting cell apoptosis and changing the balance of MMP-9/TIMP-1 expression.

Abstract Source:

Neurosci Lett. 2016 Sep 21 ;633:158-164. Epub 2016 Aug 21. PMID: 27664868

Abstract Author(s):

Ranran Ma, Bobo Yuan, Junhui Du, Lina Wang, Louyan Ma, Songfang Liu, Qing Shu, Hongzhi Sun

Article Affiliation:

Ranran Ma

Abstract:

Accumulating evidence demonstrates that acupuncture and electroacupuncture (EA) can exert a neuroprotective role for cerebral ischemia, but their precise mechanism remains largely unknown. Therefore, in this study, the effects of EA stimulation on cerebral ischemia reperfusion and its neuroprotective mechanisms were investigated. A rat model of middle cerebral artery occlusion (MCAO) was developed, and EA stimulation (2Hz, 1mA) at Baihui and Siguan acupoints was applied 30min after MCAO and then once daily for 7 consecutive days. The results indicated that EA stimulation significantly reduced the cerebral infarct area and neurological deficit scores, decreased the number of apoptotic cells, up-regulated Bcl-2 protein expression, and down-regulated Bax protein expression. EA stimulation resulted in a significant increase of proliferative cells in the cerebral tissues. Additionally, EA stimulation significantly down-regulated the expression levels of matrix metalloproteinase -9 (MMP-9) mRNA and protein, and simultaneously up-regulated the expression levels of tissue inhibitor of metalloproteinases-1 (TIMP-1) mRNA and protein, which resulted in an imbalance of MMP-9/TIMP-1expression, although it did not significantly change MMP-2 and TIMP-2 expression. These findings indicate that EA stimulation at Baihui and Siguan acupoints exerts a neuroprotective role against cerebral ischemia-reperfusion injury, which is probably associated with the inhibition of apoptosis and altering the balance of MMP-9/TIMP-1 expression.

Study Type : Animal Study

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Sayer Ji
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Depression: 21st Century Solutions + The Dark Side of Wheat

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