Journal Article

Neuroprotection by remote ischemic conditioning in the setting of acute ischemic stroke: a preclinical two-centre study

Amaz, Camille, Basalay, Maryna, Cardiovasculaire, métabolisme, diabétologie et nutrition (CarMeN) ; Université Claude Bernard Lyon 1 (UCBL) ; Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon) ; Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Hospices Civils de Lyon (HCL)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Cho, Tae-Hee, Bolbos, Radu, Davidson, Sean, Nighoghossian, Norbert, Cash, Diana, Mechtouff, Laura, Radiopharmaceutical and Neurochemical Biomarkers (CRNL-BIORAN) ; Centre de recherche en neurosciences de Lyon - Lyon Neuroscience Research Center (CRNL) ; Université Claude Bernard Lyon 1 (UCBL) ; Université de Lyon-Université de Lyon-Université Jean Monnet - Saint-Étienne (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de l

2020

Overview

Reperfusion is the only existing strategy for patients with acute ischemic stroke, however it causes further brain damage itself. A feasible therapy targeting reperfusion injury is remote ischemic conditioning (RIC). This was a two-centre, randomized, blinded international study, using translational imaging endpoints, aimed to examine the neuroprotective effects of RIC in ischemic stroke model. 80 male rats underwent 90-min middle cerebral artery occlusion. RIC consisted of 4 × 5 min cycles of left hind limb ischemia. The primary endpoint was infarct size measured on T2-weighted MRI at 24 h, expressed as percentage of the area-at-risk. Secondary endpoints were: hemispheric space-modifying edema, infarct growth between per-occlusion and 24 h MRI, neurofunctional outcome measured by neuroscores. 47 rats were included in the analysis after applying pre-defined inclusion criteria. RIC significantly reduced infarct size (median, interquartile range: 19% [8%; 32%] vs control: 40% [17%; 59%], p = 0.028). This effect was still significant after adjustment for apparent diffusion coefficient lesion size in multivariate analysis. RIC also improved neuroscores (6 [3; 8] vs control: 9 [7; 11], p = 0.032). Other secondary endpoints were not statistically different between groups. We conclude that RIC in the setting of acute ischemic stroke in rats is safe, reduces infarct size and improves functional recovery.

• Publisher: Nature Publishing Group,CCSD,Nature Publishing Group UK
• Subject: 631/378 / 631/443 / 631/80 / 692/617 / Animals / Bioengineering / Disease Models, Animal / Humanities and Social Sciences / Imaging / Ischemic Postconditioning - methods / Ischemic Preconditioning - methods / Ischemic Stroke - therapy / Life Sciences / Male / multidisciplinary / Neuroprotection / Rats, Sprague-Dawley / Recovery of Function / Safety / Science / Science (multidisciplinary) / Treatment Outcome
• ISBN: 0006153719000