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- Jun-Yi Ma and Zhi-Qi Zhao.
- Institute of Neurobiology, Fudan University, Shanghai, China.
- Neuroreport. 2002 Oct 7;13(14):1781-4.
AbstractWe have examined the potential role of spinal glial cells in the induction of C fiber-evoked long-term potentiation (LTP) in the spinal cord. Tetanic stimulation of the sciatic nerve induced longterm potentiation of C-fiber-evoked field potentials in the spinal dorsal horn in all rats. Following intrathecal fluorocitrate (1 nmol), a glial metabolic inhibitor, tetanic stimulation induced longterm depression (LTD) but not LTP. The effects of fluorocitrate were abolished by kynurenic acid or 2-amino-5-phosphonovaleric acid (AP-5), but not by 6,7-dinitroquinoxaline-2,3-dione (DNQX), picrotoxin or strychnine. These data suggest that spinal glial cells may modulate the central sensitization of nociceptive neurons via NMDA receptors.Copyright 2002 Lippincott Williams & Wilkins
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