RT Journal Article
SR Electronic
T1 The Role of Perineuronal Nets in the Contralateral Hemisphere in the Electroacupuncture-Mediated Rehabilitation of Poststroke Dysphagia Mice
JF eneuro
JO eNeuro
FD Society for Neuroscience
SP ENEURO.0234-23.2023
DO 10.1523/ENEURO.0234-23.2023
VO 10
IS 12
A1 Yuan, Si
A1 Shi, Jiahui
A1 Tang, Xiaorong
A1 Deng, Bing
A1 Wu, Zhennan
A1 Qiu, Bo
A1 Lin, Shumin
A1 Ji, Chang
A1 Wang, Lin
A1 Cui, Shuai
A1 Xu, Nenggui
A1 Yao, Lulu
YR 2023
UL http://www.eneuro.org/content/10/12/ENEURO.0234-23.2023.abstract
AB Acupuncture at Lianquan (CV23) acupoint has been shown to improve swallowing function in poststroke dysphagia (PSD). This improvement is supposed to be associated with the regulation of neuronal activity in the contralateral primary motor cortex (M1), while the underlying mechanism still needs to be elucidated. Perineuronal nets (PNNs) are well-known to be involved in the regulation of neuronal activity. Thus, we here aimed to detect the role of PNNs in the contralateral M1 hemisphere in the electroacupuncture (EA)-mediated effect in male mice. The results were obtained from a combination of methods, including in vitro slice electrophysiological recording, in vivo electrophysiological recording, and immunofluorescent staining in male mice. These results showed a decrease of the excitatory postsynaptic currents (sEPSCs) and no alteration of the inhibitory postsynaptic currents (sIPSCs) in the GABAergic neurons and the tonic inhibition in the excitatory neurons in the contralateral M1 after stroke induction, and EA recovered the impaired sEPSCs in the GABAergic neurons. We further found that the effect of EA-induced increase of c-Fos expression, enhancement of spike firing, potentiation of sEPSCs in the excitatory neurons, and improvement of swallowing function were all blocked by the removal of PNNs in the contralateral M1. In conclusion, the PNNs in the contralateral M1 was suggested to be participated in stroke pathogenesis and might be associated with the EA-mediated swallowing function rehabilitation of PSD in male mice. Our study provides insight into how PNNs might be involved in the mechanism of EA treatment for stroke rehabilitation.