Acute histopathological responses and long-term behavioral outcomes in mice with graded controlled cortical impact injury

Autor: Si-Yi Xu, Min Liu, Yang Gao, Yang Cao, Jin-Gang Bao, Ying-Ying Lin, Yong Wang, Qi-Zhong Luo, Ji-Yao Jiang, Chun-Long Zhong
Jazyk: angličtina
Rok vydání: 2019
Předmět:
Zdroj: Neural Regeneration Research, Vol 14, Iss 6, Pp 997-1003 (2019)
Druh dokumentu: article
ISSN: 1673-5374
DOI: 10.4103/1673-5374.250579
Popis: While animal models of controlled cortical impact often display short-term motor dysfunction after injury, histological examinations do not show severe cortical damage. Thus, this model requires further improvement. Mice were subjected to injury at three severities using a Pin-Point™-controlled cortical impact device to establish secondary brain injury mouse models. Twenty-four hours after injury, hematoxylin-eosin staining, Fluoro-Jade B histofluorescence, and immunohistochemistry were performed for brain slices. Compared to the uninjured side, we observed differences of histopathological findings, neuronal degeneration, and glial cell number in the CA2 and CA3 regions of the hippocampus on the injured side. The Morris water maze task and beam-walking test verified long-term (14–28 days) spatial learning/memory and motor balance. To conclude, the histopathological responses were positively correlated with the degree of damage, as were the long-term behavioral manifestations after controlled cortical impact. All animal procedures were approved by the Institutional Animal Care and Use Committee at Shanghai Jiao Tong University School of Medicine.
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