Despite extensive gray matter loss following spinal cord injury (SCI), little attention has been given to neuronal replacement strategies and their effects on specific functional circuits in the injured spinal cord. In the present study, we assessed breathing behavior and phrenic nerve electrophysiological activity following transplantation of microdissected dorsal or ventral pieces of rat fetal spinal cord tissue (FSCD or FSCV, respectively) into acute, cervical (C2) spinal hemisections. Transneuronal tracing demonstrated connectivity between donor neurons from both sources and the host phrenic circuitry. Phrenic nerve recordings revealed differential effects of dorsally vs. ventrally derived neural progenitors on ipsilateral phrenic nerve recovery and activity. These initial results suggest that local gray matter repair can influence motoneuron function in targeted circuits following spinal cord injury and that outcomes will be dependent on the properties and phenotypic fates of the donor cells employed. (C) 2010 Elsevier Inc. All rights reserved.
Neuronal progenitor transplantation and respiratory outcomes following upper cervical spinal cord injury in adult rats
Creators
Todd E. White - McKnight Brain Institute
Michael A. Lane - McKnight Brain Institute
Milapjit S. Sandhu - University of Florida College of Public Health and Health Professions
Barbara E. O'Steen - McKnight Brain Institute
David D. Fuller - University of Florida College of Public Health and Health Professions
Paul J. Reier - McKnight Brain Institute
Publication Details
Experimental neurology, v 225(1), pp 231-236
Publisher
Elsevier
Number of pages
6
Grant note
RO1NS054025 / NIH NINDS; United States Department of Health & Human Services; National Institutes of Health (NIH) - USA; NIH National Institute of Neurological Disorders & Stroke (NINDS)
Anne and Oscar Lackner Chair in Medicine
R01NS054025 / NATIONAL INSTITUTE OF NEUROLOGICAL DISORDERS AND STROKE; United States Department of Health & Human Services; National Institutes of Health (NIH) - USA; NIH National Institute of Neurological Disorders & Stroke (NINDS)
P40RR018604 / NATIONAL CENTER FOR RESEARCH RESOURCES; United States Department of Health & Human Services; National Institutes of Health (NIH) - USA; NIH National Center for Research Resources (NCRR)
Resource Type
Journal article
Language
English
Academic Unit
Neurobiology and Anatomy
Web of Science ID
WOS:000281339300029
Scopus ID
2-s2.0-77955665246
Other Identifier
991019299115104721
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