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dc.contributor.authorGolubczyk, D
dc.contributor.authorKalkowski, L
dc.contributor.authorKwiatkowska, J
dc.contributor.authorZawadzki, M
dc.contributor.authorHolak, P
dc.contributor.authorGlodek, J
dc.contributor.authorMilewska, K
dc.contributor.authorPomianowski, A
dc.contributor.authorJanowski, M
dc.contributor.authorAdamiak, Z
dc.contributor.authorWalczak, P
dc.contributor.authorMalysz-Cymborska, I
dc.date.accessioned2020-10-27T19:16:45Z
dc.date.available2020-10-27T19:16:45Z
dc.date.issued2020-10-14
dc.identifier.urihttp://hdl.handle.net/10713/13956
dc.description.abstractModeling stroke in animals is essential for testing efficacy of new treatments; however, previous neuroprotective therapies, based on systemic delivery in rodents failed, exposing the need for model with improved clinical relevance. The purpose of this study was to develop endovascular approach for inducing ischemia in swine. To achieve that goal, we used intra-arterial administration of thrombin mixed with gadolinium and visualized the occlusion with real-time MRI. Placement of the microcatheter proximally to rete allowed trans-catheter perfusion of the ipsilateral hemisphere as visualized by contrast-enhanced perfusion MR scans. Dynamic T2*w MRI facilitated visualization of thrombin + Gd solution transiting through cerebral vasculature and persistent hyperintensities indicated occlusion. Area of trans-catheter perfusion dynamically quantified on representative slice before and after thrombin administration (22.20 ± 6.31 cm2 vs. 13.28 ± 4.71 cm2 respectively) indicated significantly reduced perfusion. ADC mapping showed evidence of ischemia as early as 27 min and follow-up T2w scans confirmed ischemic lesion (3.14 ± 1.41 cm2). Animals developed contralateral neurological deficits but were ambulatory. Our study has overcome long lasting challenge of inducing endovascular stroke model in pig. We were able to induce stroke using minimally invasive endovascular approach and observe in real-time formation of the thrombus, blockage of cerebral perfusion and eventually stroke lesion.en_US
dc.description.urihttps://doi.org/10.1038/s41598-020-74411-3en_US
dc.language.isoenen_US
dc.publisherSpringer Natureen_US
dc.relation.ispartofScientific Reportsen_US
dc.subject.meshIschemic Strokeen_US
dc.subject.meshMagnetic Resonance Imagingen_US
dc.subject.meshModels, Animalen_US
dc.subject.meshSwineen_US
dc.titleEndovascular model of ischemic stroke in swine guided by real-time MRIen_US
dc.typeArticleen_US
dc.identifier.doi10.1038/s41598-020-74411-3
dc.identifier.pmid33057149
dc.source.volume10
dc.source.issue1
dc.source.beginpage17318
dc.source.endpage
dc.source.countryEngland


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