Enhanced brain-derived neurotrophic factor delivery by ultrasound and microbubbles promotes white matter repair after stroke. (September 2016)

• Record Type: Journal Article
• Authors: Rodríguez-Frutos, Berta; Otero-Ortega, Laura; Ramos-Cejudo, Jaime; Martínez-Sánchez, Patricia; Barahona-Sanz, Inés; Navarro-Hernanz, Teresa; Gómez-de Frutos, María del Carmen; Díez-Tejedor, Exuperio; Gutiérrez-Fernández, María
• Is Part Of: Biomaterials. Volume 100(2016)
• Page Start: 41
• Page End: 52
• Publication Date: 2016-09
• Subjects: BDNF -- Brain repair -- Microbubbles -- Subcortical stroke -- Ultrasound -- White matter injury; BBB blood brain barrier -- BDNF Brain derived Neurotrophic Factor -- ET-1 endothelin -1 -- UTMD Ultrasound-targeted microbubble destruction; Biomedical materials -- Periodicals; Biocompatible Materials -- Periodicals; Biomatériaux -- Périodiques; 610.28
• DOI: 10.1016/j.biomaterials.2016.05.028
• Languages: English
• ISSNs: 0142-9612

Abstract

Abstract: Ultrasound-targeted microbubble destruction (UTMD) has been shown to be a promising tool to deliver proteins to select body areas. This study aimed to analyze whether UTMD was able to deliver brain-derived neurotrophic factor (BDNF) to the brain, enhancing functional recovery and white matter repair, in an animal model of subcortical stroke induced by endothelin (ET)-1. UTMD was used to deliver BDNF to the brain 24 h after stroke. This technique was shown to be safe, given there were no cases of hemorrhagic transformation or blood brain barrier (BBB) leakage. UTMD treatment was associated with increased brain BDNF levels at 4 h after administration. Targeted ultrasound delivery of BDNF improved functional recovery associated with fiber tract connectivity restoration, increasing oligodendrocyte markers and remyelination compared to BDNF alone administration in an experimental animal model of white matter injury.