Repeated Long-Term Sub-concussion Impacts Induce Motor Dysfunction in Rats: A Potential Rodent Model

Autor: Andrew P. Lavender, Samuel Rawlings, Andrew Warnock, Terry McGonigle, Bailey Hiles-Murison, Michael Nesbit, Virginie Lam, Mark J. Hackett, Melinda Fitzgerald, Ryusuke Takechi
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Frontiers in Neurology, Vol 11 (2020)
Druh dokumentu: article
ISSN: 1664-2295
DOI: 10.3389/fneur.2020.00491
Popis: Whilst detrimental effects of repeated sub-concussive impacts on neurophysiological and behavioral function are increasingly reported, the underlying mechanisms are largely unknown. Here, we report that repeated sub-concussion with a light weight drop (25 g) in wild-type PVG rats for 2 weeks does not induce detectable neuromotor dysfunction assessed by beamwalk and rotarod tests. However, after 12 weeks of repeated sub-concussion, the rats exhibited moderate neuromotor dysfunction. This is the first study to demonstrate development of neuromotor dysfunction following multiple long-term sub-concussive impacts in rats. The outcomes may offer significant opportunity for future studies to understand the mechanisms of sub-concussion-induced neuropsychological changes.
Databáze: Directory of Open Access Journals