期刊
MILITARY MEDICINE
卷 184, 期 3-4, 页码 379-385出版社
OXFORD UNIV PRESS
DOI: 10.1093/milmed/usy399
关键词
Peripheral nerve injury; trauma; compression; gap
资金
- National Institutes of Health (NIH) [K08 AR060164-01A]
- Department of Defense (DOD) [W81XWH-16-1-0725]
- American Society for Surgery of the Hand (ASSH) Hand Surgeon Scientist Award
- Office of the Secretary of Defense for Health Affairs
Background Traumatic peripheral nerve injury (TPI) is a major medical problem without effective treatment options. There is no way to diagnose or treat an incomplete injury and delays contribute to morbidity. We examined 4-aminopyridine (4-AP), a potassium-channel blocker as a possible treatment for TPI. Methods We used standard mouse models of TPI with functional outcomes including sciatic-functional-index, sensory indices, and electrodiagnostics; in addition to standard immunohistochemical, and electron microscopic correlates of axon and myelin morphology. Results Sustained early 4-AP administration increased the speed and extent of behavioral recovery too rapidly to be explained by axonal regeneration. 4-AP also enhanced recovery of nerve conduction velocity, promoted remyelination, and increased axonal area post-injury. 4-AP treatment also enabled the rapid distinction between incomplete and complete nerve lesions. Conclusion 4-AP singularly provides both a new potential therapy to promote durable recovery and remyelination in acute peripheral nerve injury and a means of identifying lesions in which this therapy would be most likely to be of value. The ability to distinguish injuries that may respond to extended therapy without intervention can offer benefit to wounded soldiers.
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