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Neuroscience letters · Feb 1995
Quantitative evaluation of calcitonin gene-related peptide and substance P levels in rat spinal cord following peripheral nerve injury.
- K C Kajander and J Xu.
- Department of Oral Science, University of Minnesota, Minneapolis 55455-0329, USA.
- Neurosci. Lett. 1995 Feb 17; 186 (2-3): 184-8.
AbstractLevels of calcitonin gene-related peptide immunoreactivity (CGRP-ir) and substance P immunoreactivity (SP-ir) in the lumbar dorsal spinal cord of rats with either sciatic nerve transection or chronic constriction injury (CCI) were measured using radioimmunoassay. Significant decreases in CGRP-ir and SP-ir occurred in the ipsilateral spinal cord at 10 and 31 days after nerve transection. An ipsilateral decrease in SP-ir occurred 60 days after CCI. In addition, contralateral decreases in CGRP-ir and SP-ir occurred 31 days after transection and 60 days after CCI. Transection of the sciatic nerve produced greater decreases in peptide levels than did the CCI. Changes in spinal levels of these peptides may be involved in the appearance of neuropathic signs associated with nerve injury.
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