Acute neuromuscular adaptation at the spinal level following middle cerebral artery occlusion-reperfusion in the rat.
Autor: | Caroline Pin-Barre; Jérôme Laurin; Marie-Solenne Felix; Vincent Pertici; Frank Kober; Tanguy Marqueste; Valery Matarazzo; Françoise Muscatelli-Bossy; Jean-Jacques Temprado; Jeanick Brisswalter; Patrick Decherchi |
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Sprache: | Englisch |
Veröffentlicht: |
2014 |
Quelle: | Directory of Open Access Journals: DOAJ Articles |
Online Zugang: |
https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24587147/?tool=EBI https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0089953 https://doaj.org/article/55836339722b49438765fef38f1e22f6 https://doi.org/10.1371/journal.pone.0089953 https://doaj.org/article/55836339722b49438765fef38f1e22f6 |
Erfassungsnummer: | ftdoajarticles:oai:doaj.org/article:55836339722b49438765fef38f1e22f6 |
Zusammenfassung
The purpose of the study was to highlight the acute motor reflex adaptation and to deepen functional deficits following a middle cerebral artery occlusion-reperfusion (MCAO-r). Thirty-six Sprague-Dawley rats were included in this study. The middle cerebral artery occlusion (MCAO; 120 min) was performed on 16 rats studied at 1 and 7 days, respectively (MCAO-D1 and MCAO-D7, n = 8 for each group). The other animals were divided into 3 groups: SHAM-D1 (n = 6), SHAM-D7 (n = 6) and Control (n = 8). Rats performed 4 behavioral tests (the elevated body swing test, the beam balance test, the ladder-climbing test and the forelimb grip force) before the surgery and daily after MCAO-r. H-reflex on triceps brachii was measured before and after isometric exercise. Infarction size and cerebral edema were respectively assessed by histological (Cresyl violet) and MRI measurements at the same time points than H-reflex recordings. Animals with cerebral ischemia showed persistent functional deficits during the first week post-MCAO-r. H-reflex was not decreased in response to isometric exercise one day after the cerebral ischemia contrary to the other groups. The motor reflex regulation was recovered 7 days post-MCAO-r. This result reflects an acute sensorimotor adaptation at the spinal level after MCAO-r.