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Schlemm E, Jensen M, Kuceyeski A, Jamison K, Ingwersen T, Mayer C, Königsberg A, Boutitie F, Ebinger M, Endres M, Fiebach JB, Fiehler J, Galinovic I, Lemmens R, Muir KW, Nighoghossian N, Pedraza S, Puig J, Simonsen CZ, Thijs V, Wouters A, Gerloff C, Thomalla G, Cheng B. Early effect of thrombolysis on structural brain network organisation after anterior‐circulation stroke in the randomized
WAKE‐UP
trial. Hum Brain Mapp 2022; 43:5053-5065. [PMID: 36102287 PMCID: PMC9582379 DOI: 10.1002/hbm.26073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2022] [Revised: 07/11/2022] [Accepted: 08/22/2022] [Indexed: 11/08/2022] Open
Abstract
The symptoms of acute ischemic stroke can be attributed to disruption of the brain network architecture. Systemic thrombolysis is an effective treatment that preserves structural connectivity in the first days after the event. Its effect on the evolution of global network organisation is, however, not well understood. We present a secondary analysis of 269 patients from the randomized WAKE‐UP trial, comparing 127 imaging‐selected patients treated with alteplase with 142 controls who received placebo. We used indirect network mapping to quantify the impact of ischemic lesions on structural brain network organisation in terms of both global parameters of segregation and integration, and local disruption of individual connections. Network damage was estimated before randomization and again 22 to 36 h after administration of either alteplase or placebo. Evolution of structural network organisation was characterised by a loss in integration and gain in segregation, and this trajectory was attenuated by the administration of alteplase. Preserved brain network organization was associated with excellent functional outcome. Furthermore, the protective effect of alteplase was spatio‐topologically nonuniform, concentrating on a subnetwork of high centrality supported in the salvageable white matter surrounding the ischemic cores. This interplay between the location of the lesion, the pathophysiology of the ischemic penumbra, and the spatial embedding of the brain network explains the observed potential of thrombolysis to attenuate topological network damage early after stroke. Our findings might, in the future, lead to new brain network‐informed imaging biomarkers and improved prognostication in ischemic stroke.
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Affiliation(s)
- Eckhard Schlemm
- Klinik und Poliklinik für Neurologie, Kopf‐ und Neurozentrum University Medical Centre Hamburg‐Eppendorf Hamburg Germany
| | - Märit Jensen
- Klinik und Poliklinik für Neurologie, Kopf‐ und Neurozentrum University Medical Centre Hamburg‐Eppendorf Hamburg Germany
| | - Amy Kuceyeski
- Department of Radiology Weill Cornell Medicine New York New York USA
| | - Keith Jamison
- Department of Radiology Weill Cornell Medicine New York New York USA
| | - Thies Ingwersen
- Klinik und Poliklinik für Neurologie, Kopf‐ und Neurozentrum University Medical Centre Hamburg‐Eppendorf Hamburg Germany
| | - Carola Mayer
- Klinik und Poliklinik für Neurologie, Kopf‐ und Neurozentrum University Medical Centre Hamburg‐Eppendorf Hamburg Germany
| | - Alina Königsberg
- Klinik und Poliklinik für Neurologie, Kopf‐ und Neurozentrum University Medical Centre Hamburg‐Eppendorf Hamburg Germany
| | - Florent Boutitie
- Department of Radiology Weill Cornell Medicine New York New York USA
- Hospices Civils de Lyon, Service de Biostatistique Lyon France
- Université Lyon 1 Villeurbanne France
- CNRS, UMR 5558 Laboratoire de Biométrie et Biologie Evolutive, Equipe Biostatistique‐Santé Villeurbanne France
| | - Martin Ebinger
- Centrum für Schlaganfallforschung Berlin (CSB) Charité ‐ Universitätsmedizin Berlin Berlin Germany
- Klinik für Neurologie Medical Park Berlin Humboldtmühle Berlin Germany
| | - Matthias Endres
- Centrum für Schlaganfallforschung Berlin (CSB) Charité ‐ Universitätsmedizin Berlin Berlin Germany
- Klinik und Hochschulambulanz für Neurologie Charité‐Universitätsmedizin Berlin Berlin Germany
- German Centre for Neurodegenerative Diseases (DZNE) Berlin Germany
- German Centre for Cardiovascular Research (DZHK) Berlin Germany
- ExcellenceCluster NeuroCure Berlin Germany
| | - Jochen B. Fiebach
- Centrum für Schlaganfallforschung Berlin (CSB) Charité ‐ Universitätsmedizin Berlin Berlin Germany
| | - Jens Fiehler
- Department of Diagnostic and Interventional Neuroradiology University Medical Centre Hamburg‐Eppendorf Hamburg Germany
| | - Ivana Galinovic
- Centrum für Schlaganfallforschung Berlin (CSB) Charité ‐ Universitätsmedizin Berlin Berlin Germany
| | - Robin Lemmens
- Department of Neurology University Hospitals Leuven Leuven Belgium
- Department of Neurosciences Division of Experimental Neurology KU Leuven—University of Leuven Leuven Belgium
- VIB, Centre for Brain & Disease Research Laboratory of Neurobiology Leuven Belgium
| | - Keith W. Muir
- Institute of Neuroscience & Psychology University of Glasgow Glasgow UK
| | - Norbert Nighoghossian
- Department of Stroke Medicine, Université Claude Bernard Lyon 1 CREATIS CNRS UMR 5220‐INSERM U1206, INSA‐Lyon Lyon France
| | - Salvador Pedraza
- Department of Radiology, Institut de Diagnostic per la Image (IDI) Hospital Dr Josep Trueta, Institut d'Investigació Biomèdica de Girona (IDIBGI) Girona Spain
| | - Josep Puig
- Department of Radiology, Institut de Diagnostic per la Image (IDI) Hospital Dr Josep Trueta, Institut d'Investigació Biomèdica de Girona (IDIBGI) Girona Spain
| | | | - Vincent Thijs
- Stroke Division, Florey Institute of Neuroscience and Mental Health University of Melbourne Heidelberg Victoria Australia
- Department of Neurology Austin Health Heidelberg Victoria Australia
| | - Anke Wouters
- Department of Neurology University Hospitals Leuven Leuven Belgium
- Department of Neurosciences Division of Experimental Neurology KU Leuven—University of Leuven Leuven Belgium
- VIB, Centre for Brain & Disease Research Laboratory of Neurobiology Leuven Belgium
- Department of Neurology Amsterdam UMC University of Amsterdam Amsterdam Netherlands
| | - Christian Gerloff
- Klinik und Poliklinik für Neurologie, Kopf‐ und Neurozentrum University Medical Centre Hamburg‐Eppendorf Hamburg Germany
| | - Götz Thomalla
- Klinik und Poliklinik für Neurologie, Kopf‐ und Neurozentrum University Medical Centre Hamburg‐Eppendorf Hamburg Germany
| | - Bastian Cheng
- Klinik und Poliklinik für Neurologie, Kopf‐ und Neurozentrum University Medical Centre Hamburg‐Eppendorf Hamburg Germany
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