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Human Neural Stem Cell Extracellular Vesicles Improve Recovery in a Porcine Model of Ischemic Stroke.
Webb, Robin L; Kaiser, Erin E; Jurgielewicz, Brian J; Spellicy, Samantha; Scoville, Shelley L; Thompson, Tyler A; Swetenburg, Raymond L; Hess, David C; West, Franklin D; Stice, Steven L.
Afiliación
  • Webb RL; From the ArunA Biomedical, Athens, GA (R.L.W., S.L. Scoville, T.A.T., R.L.S).
  • Kaiser EE; Regenerative Bioscience Center (R.L.W., E.E.K., B.J.J., S.S., F.D.W., S.L. Stice).
  • Jurgielewicz BJ; Regenerative Bioscience Center (R.L.W., E.E.K., B.J.J., S.S., F.D.W., S.L. Stice).
  • Spellicy S; Department of Animal and Dairy Science, College of Agricultural and Environmental Sciences (E.E.K., F.D.W.).
  • Scoville SL; Regenerative Bioscience Center (R.L.W., E.E.K., B.J.J., S.S., F.D.W., S.L. Stice).
  • Thompson TA; Regenerative Bioscience Center (R.L.W., E.E.K., B.J.J., S.S., F.D.W., S.L. Stice).
  • Swetenburg RL; From the ArunA Biomedical, Athens, GA (R.L.W., S.L. Scoville, T.A.T., R.L.S).
  • Hess DC; From the ArunA Biomedical, Athens, GA (R.L.W., S.L. Scoville, T.A.T., R.L.S).
  • West FD; From the ArunA Biomedical, Athens, GA (R.L.W., S.L. Scoville, T.A.T., R.L.S).
  • Stice SL; University of Georgia, Rhodes Center for Animal and Dairy Science, Athens; and Department of Neurology, Augusta University, GA (D.C.H.).
Stroke ; 49(5): 1248-1256, 2018 05.
Article en En | MEDLINE | ID: mdl-29650593
ABSTRACT
BACKGROUND AND

PURPOSE:

Recent work from our group suggests that human neural stem cell-derived extracellular vesicle (NSC EV) treatment improves both tissue and sensorimotor function in a preclinical thromboembolic mouse model of stroke. In this study, NSC EVs were evaluated in a pig ischemic stroke model, where clinically relevant end points were used to assess recovery in a more translational large animal model.

METHODS:

Ischemic stroke was induced by permanent middle cerebral artery occlusion (MCAO), and either NSC EV or PBS treatment was administered intravenously at 2, 14, and 24 hours post-MCAO. NSC EV effects on tissue level recovery were evaluated via magnetic resonance imaging at 1 and 84 days post-MCAO. Effects on functional recovery were also assessed through longitudinal behavior and gait analysis testing.

RESULTS:

NSC EV treatment was neuroprotective and led to significant improvements at the tissue and functional levels in stroked pigs. NSC EV treatment eliminated intracranial hemorrhage in ischemic lesions in NSC EV pigs (0 of 7) versus control pigs (7 of 8). NSC EV-treated pigs exhibited a significant decrease in cerebral lesion volume and decreased brain swelling relative to control pigs 1-day post-MCAO. NSC EVs significantly reduced edema in treated pigs relative to control pigs, as assessed by improved diffusivity through apparent diffusion coefficient maps. NSC EVs preserved white matter integrity with increased corpus callosum fractional anisotropy values 84 days post-MCAO. Behavior and mobility improvements paralleled structural changes as NSC EV-treated pigs exhibited improved outcomes, including increased exploratory behavior and faster restoration of spatiotemporal gait parameters.

CONCLUSIONS:

This study demonstrated for the first time that in a large animal model novel NSC EVs significantly improved neural tissue preservation and functional levels post-MCAO, suggesting NSC EVs may be a paradigm changing stroke therapeutic.
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Texto completo: 1 Banco de datos: MEDLINE Asunto principal: Edema Encefálico / Cuerpo Calloso / Recuperación de la Función / Infarto de la Arteria Cerebral Media / Células-Madre Neurales / Sustancia Blanca / Vesículas Extracelulares Límite: Animals / Humans Idioma: En Revista: Stroke Año: 2018 Tipo del documento: Article

Texto completo: 1 Banco de datos: MEDLINE Asunto principal: Edema Encefálico / Cuerpo Calloso / Recuperación de la Función / Infarto de la Arteria Cerebral Media / Células-Madre Neurales / Sustancia Blanca / Vesículas Extracelulares Límite: Animals / Humans Idioma: En Revista: Stroke Año: 2018 Tipo del documento: Article