期刊
ELECTROMAGNETIC BIOLOGY AND MEDICINE
卷 32, 期 2, 页码 155-164出版社
TAYLOR & FRANCIS INC
DOI: 10.3109/15368378.2013.776353
关键词
glutamate; magnetic stimulation; recovery; spinal cord injury
资金
- New York State Department of Health [CO23684]
- PSC CUNY [62610-0041, 63644-0041]
The effects of repetitive trans-spinal magnetic stimulation (rTSMS), combined with acrobatic exercise on functional locomotor recovery in chronic spinal-contused mice were tested. The exposure to magnetic stimulation was initiated 3 weeks after injury, when the animals entered chronic stage. The rTSMS was applied for a total of 4 weeks over a 9-week duration trial. Seventeen mice with the spinal cord contusion injured at level T13 were separated into two groups. While one group consisting of 10 animals was exposed to rTSMS (15 Hz), the other seven animals served as controls. Functional recovery measured with Basso mouse scale and horizontal ladder scale showed significantly better functional recovery in rTSMS-treated animals. The progress in recovery continued even after cessation of magnetic stimulation. In vitro experiments revealed that the release of glutamate analog, radioactive D-aspartate from the segments of the spinal cord exposed to rTSMS was significantly elevated. In conclusion, the exposure to rTSMS, applied to injured spinal cord during chronic post-surgery stage remarkably improves the functional recovery. This recovery may be correlated by magnetically induced elevation in the release of major excitatory neurotransmitter, glutamate from injured tissue.
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