Epidural electrical stimulation combined with photobiomodulation restores hindlimb motor function in rats with thoracic spinal cord injury.

Autor: Guo XJ; Beijing Key Laboratory for Biomaterials and Neural Regeneration, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing 100191, China., He LW; Beijing Key Laboratory for Biomaterials and Neural Regeneration, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing 100191, China., Chang JQ; School of Automation Science and Electrical Engineering, Beihang University, Beijing 100191, China., Su WN; Beijing Key Laboratory for Biomaterials and Neural Regeneration, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing 100191, China., Feng T; Beijing Key Laboratory for Biomaterials and Neural Regeneration, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing 100191, China., Gao YM; Beijing Key Laboratory for Biomaterials and Neural Regeneration, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing 100191, China., Wu YY; Beijing Key Laboratory for Biomaterials and Neural Regeneration, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing 100191, China., Zhao C; Institute of Rehabilitation Engineering, China Rehabilitation Science Institute, Beijing 100068, China. Electronic address: zhaocan05@163.com., Rao JS; Beijing Key Laboratory for Biomaterials and Neural Regeneration, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing 100191, China. Electronic address: raojschina@126.com.
Jazyk: angličtina
Zdroj: Experimental neurology [Exp Neurol] 2024 Dec 10, pp. 115112. Date of Electronic Publication: 2024 Dec 10.
DOI: 10.1016/j.expneurol.2024.115112
Abstrakt: Epidural electrical stimulation (EES) could restore motor function of paralyzed limbs of patients with spinal cord injury (SCI). However, its invasiveness limits its application in early stage of injury. Photobiomodulation (PBM) utilizes infrared light for percutaneous irradiation of the spinal cord to protect nerve tissue, delay muscle atrophy, and can be applied in early stage of SCI due to its non-invasiveness. This study tested the effect of the combination of EES and PBM on promoting motor function recovery in SCI rats. Severe contusion was induced at the T9 spinal segment in female rats, EES (applied to the L2 and S1 spinal cord segments) with treadmill training was conducted one week after the injury, and PBM percutaneous irradiation started at the injured segment on the day of surgery. In the third week post-injury, electromyographic and gait performance during training were recorded. Besides, the muscles of the hind limbs and the spinal cord on the caudal side of the injured segment were extracted. The results demonstrate that compared to the EES- or PBM-only group, this combined therapy led to several indicators returning to intact levels, including behavioral and electrophysiological, the gait patterns was also closer to intact rats. Additionally, the combined treatment group showed minimal muscle atrophy and maximal preservation of the injured spinal cord on the caudal side, with this histological improvement correlated with motor function recovery. Taken together, our results showed that this combined therapy was a more effective treatment for improving motor dysfunction after SCI which could protect the damaged spinal cord and promote the recovery of motor function in rats with SCI.
(Copyright © 2024. Published by Elsevier Inc.)
Databáze: MEDLINE
Externí odkaz: