期刊
JOURNAL OF NEUROSCIENCE METHODS
卷 134, 期 1, 页码 75-80出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jneumeth.2003.11.002
关键词
peripheral nerve; nerve regeneration; nerve repair; nociception; nerve grafts; muscle reinnervation
Motor and sensory regeneration was studied in a 40 mm long graft interposed between the sectioned stumps of the rat median nerve. Animals were behaviorally assessed from 1 to 720 days after surgery by the grasping and modified Randall-Sellito tests. Rats recovered grasping function 43.7 (S.D. +/- 2.6) days after surgery. Grasping strength attained 50 and 65% of the normal control group, 280 and 360 days after surgery, respectively. From 90 to 360 days after surgery, sensory nociceptive recovery was only 30% of the normal control group. The results indicate that motor and sensory neurons were capable of regenerating additional axonal length, but functional return was clearly better in the motor system. This model of deficient reinnervation might prove to be of interest in testing of new strategies for the enhancement of nerve recovery. (C) 2003 Elsevier B.V. All rights reserved.
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