1. Preclinical neurorehabilitation with environmental enrichment confers cognitive and histological benefits in a model of pediatric asphyxial cardiac arrest.
- Author
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Manole MD, Hook MJA, Nicholas MA, Nelson BP, Liu AC, Stezoski QC, Rowley AP, Cheng JP, Alexander H, Moschonas EH, Bondi CO, and Kline AE
- Subjects
- Animals, Animals, Newborn, Anxiety etiology, Anxiety psychology, Asphyxia Neonatorum pathology, CA1 Region, Hippocampal pathology, Heart Arrest pathology, Male, Memory, Psychomotor Performance, Rats, Rats, Sprague-Dawley, Recovery of Function, Spatial Learning, Asphyxia Neonatorum psychology, Asphyxia Neonatorum rehabilitation, Cognition, Environment, Heart Arrest psychology, Heart Arrest rehabilitation, Neurological Rehabilitation methods
- Abstract
Pediatric asphyxial cardiac arrest (ACA) often leaves children with physical, cognitive, and emotional disabilities that affect overall quality of life, yet rehabilitation is neither routinely nor systematically provided. Environmental enrichment (EE) is considered a preclinical model of neurorehabilitation and thus we sought to investigate its efficacy in our established model of pediatric ACA. Male Sprague-Dawley rat pups (post-natal day 16-18) were randomly assigned to ACA (9.5 min) or Sham injury. After resuscitation, the rats were assigned to 21 days of EE or standard (STD) housing during which time motor, cognitive, and anxiety-like (i.e., affective) outcomes were assessed. Hippocampal CA
1 cells were quantified on post-operative day-22. Both ACA + STD and ACA + EE performed worse on beam-balance vs. Sham controls (p < 0.05) and did not differ from one another overall (p > 0.05); however, a single day analysis on the last day of testing revealed that the ACA + EE group performed better than the ACA + STD group (p < 0.05) and did not differ from the Sham controls (p > 0.05). Both Sham groups performed better than ACA + STD (p < 0.05) but did not differ from ACA + EE (p > 0.05) in the open field test. Spatial learning and declarative memory were improved and CA1 neuronal loss was attenuated in the ACA + EE vs. ACA + STD group (p < 0.05). Collectively, the data suggest that providing rehabilitation after pediatric ACA can reduce histopathology and improve motor and cognitive ability., (Copyright © 2020 Elsevier Inc. All rights reserved.)- Published
- 2021
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