A New Rabbit Model of Pediatric Traumatic Brain Injury

Journal of Neurotrauma
Zhi ZhangSujatha Kannan

Abstract

Traumatic brain injury (TBI) is a common cause of disability in childhood, resulting in numerous physical, behavioral, and cognitive sequelae, which can influence development through the lifespan. The mechanisms by which TBI influences normal development and maturation remain largely unknown. Pediatric rodent models of TBI often do not demonstrate the spectrum of motor and cognitive deficits seen in patients. To address this problem, we developed a New Zealand white rabbit model of pediatric TBI that better mimics the neurological injury seen after TBI in children. On postnatal Day 5-7 (P5-7), rabbits were injured by a controlled cortical impact (6-mm impactor tip; 5.5 m/sec, 2-mm depth, 50-msec duration). Rabbits from the same litter served as naïve (no injury) and sham (craniotomy alone) controls. Functional abilities and activity levels were measured 1 and 5 d after injury. Maturation level was monitored daily. We performed cognitive tests during P14-24 and sacrificed the animals at 1, 3, 7, and 21 d after injury to evaluate lesion volume and microglia. TBI kits exhibited delayed achievement of normal developmental milestones. They also demonstrated significant cognitive deficits, with lower percentage of correct alternation...Continue Reading

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Citations

Apr 20, 2016·Frontiers in Systems Neuroscience·Aleksandr PevznerGene G Gurkoff
Nov 11, 2016·Brain Injury : [BI]·Chaoyang ChenAlbert I King
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Sep 19, 2017·The International Journal of Neuroscience·Jun-Xi DaiYang Wang
Nov 25, 2020·Neural Regeneration Research·Mariam RizkZhi Zhang
May 6, 2019·Experimental Neurology·Naomi S Sta MariaChristopher C Giza

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