A cortical injury model in a non-human primate to assess execution of reach and grasp actions: implications for recovery after traumatic brain injury.

Autor: Barbay S; University of Kansas Medical Center, Dept. of Physical Medicine and Rehabilitation, USA. Electronic address: sbarbay@kumc.edu., Zhang H; University of Kansas Medical Center, Dept. of Physical Medicine and Rehabilitation, USA., Frost SB; University of Kansas Medical Center, Dept. of Physical Medicine and Rehabilitation, USA., Peterson JC; University of Kansas Medical Center, Dept. of Neurosurgery, USA., Guggenmos DJ; University of Kansas Medical Center, Dept. of Physical Medicine and Rehabilitation, USA., Hudson HM; University of Kansas Medical Center, Dept. of Physical Medicine and Rehabilitation, USA., Bundy DT; University of Kansas Medical Center, Dept. of Physical Medicine and Rehabilitation, USA., DeJong SL; University of Kansas Medical Center, Landon Center on Aging, USA., Nudo RJ; University of Kansas Medical Center, Dept. of Physical Medicine and Rehabilitation, USA; University of Kansas Medical Center, Landon Center on Aging, USA.
Jazyk: angličtina
Zdroj: Journal of neuroscience methods [J Neurosci Methods] 2021 Sep 01; Vol. 361, pp. 109283. Date of Electronic Publication: 2021 Jul 06.
DOI: 10.1016/j.jneumeth.2021.109283
Abstrakt: Background: Technological advances in developing experimentally controlled models of traumatic brain injury (TBI) are prevalent in rodent models and these models have proven invaluable in characterizing temporal changes in brain and behavior after trauma. To date no long-term studies in non-human primates (NHPs) have been published using an experimentally controlled impact device to follow behavioral performance over time.
New Method: We have employed a controlled cortical impact (CCI) device to create a focal contusion to the hand area in primary motor cortex (M1) of three New World monkeys to characterize changes in reach and grasp function assessed for 3 months after the injury.
Results: The CCI destroyed most of M1 hand representation reducing grey matter by 9.6 mm 3 , 12.9 mm 3 , and 15.5 mm 3 and underlying corona radiata by 7.4 mm 3 , 6.9 mm 3 , and 5.6 mm 3 respectively. Impaired motor function was confined to the hand contralateral to the injury. Gross hand-use was only mildly affected during the first few days of observation after injury while activity requiring skilled use of the hand was impaired over three months.
Comparison With Existing Method(s): This study is unique in establishing a CCI model of TBI in an NHP resulting in persistent impairments in motor function evident in volitional use of the hand.
Conclusions: Establishing an NHP model of TBI is essential to extend current rodent models to the complex neural architecture of the primate brain. Moving forward this model can be used to investigate novel therapeutic interventions to improve or restore impaired motor function after trauma.
(Copyright © 2021 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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