Skip to main content
Erschienen in: Brain Structure and Function 9/2022

10.05.2022 | Original Article

Associations between corpus callosum damage, clinical disability, and surface-based homologous inter-hemispheric connectivity in multiple sclerosis

verfasst von: Andrew W. Russo, Kirsten E. Stockel, Sean M. Tobyne, Chanon Ngamsombat, Kristina Brewer, Aapo Nummenmaa, Susie Y. Huang, Eric C. Klawiter

Erschienen in: Brain Structure and Function | Ausgabe 9/2022

Einloggen, um Zugang zu erhalten

Abstract

Axonal damage in the corpus callosum is prevalent in multiple sclerosis (MS). Although callosal damage is associated with disrupted functional connectivity between hemispheres, it is unclear how this relates to cognitive and physical disability. We investigated this phenomenon using advanced measures of microstructural integrity in the corpus callosum and surface-based homologous inter-hemispheric connectivity (sHIC) in the cortex. We found that sHIC was significantly decreased in primary motor, somatosensory, visual, and temporal cortical areas in a group of 36 participants with MS (29 relapsing–remitting, 4 secondary progressive MS, and 3 primary-progressive MS) compared with 42 healthy controls (cluster level, p < 0.05). In participants with MS, global sHIC correlated with fractional anisotropy and restricted volume fraction in the posterior segment of the corpus callosum (r = 0.426, p = 0.013; r = 0.399, p = 0.020, respectively). Lower sHIC, particularly in somatomotor and posterior cortical areas, was associated with cognitive impairment and higher disability scores on the Expanded Disability Status Scale (EDSS). We demonstrated that higher levels of sHIC attenuated the effects of posterior callosal damage on physical disability and cognitive dysfunction, as measured by the EDSS and Brief Visuospatial Memory Test-Revised (interaction effect, p < 0.05). We also observed a positive association between global sHIC and years of education (r = 0.402, p = 0.018), supporting the phenomenon of “brain reserve” in MS. Our data suggest that preserved sHIC helps prevent cognitive and physical decline in MS.
Literatur
Zurück zum Zitat Cutter GR, Baier ML, Rudick RA, Cookfair DL, Fischer JS, Petkau J, Willoughby E (1999) Development of a multiple sclerosis functional composite as a clinical trial outcome measure. Brain 122(Pt 5):871–882CrossRefPubMed Cutter GR, Baier ML, Rudick RA, Cookfair DL, Fischer JS, Petkau J, Willoughby E (1999) Development of a multiple sclerosis functional composite as a clinical trial outcome measure. Brain 122(Pt 5):871–882CrossRefPubMed
Zurück zum Zitat Evangelou N, Konz D, Esiri MM, Smith S, Palace J, Matthews PM (2000) Regional axonal loss in the corpus callosum correlates with cerebral white matter lesion volume and distribution in multiple sclerosis. Brain 123(Pt 9):1845–1849CrossRefPubMed Evangelou N, Konz D, Esiri MM, Smith S, Palace J, Matthews PM (2000) Regional axonal loss in the corpus callosum correlates with cerebral white matter lesion volume and distribution in multiple sclerosis. Brain 123(Pt 9):1845–1849CrossRefPubMed
Zurück zum Zitat Govindarajan, K. A., Datta, S., Hasan, K. M., Choi, S., Rahbar, M. H., Cofield, S. S., Group, C. I (2015) Effect of in-painting on cortical thickness measurements in multiple sclerosis: a large cohort study. Hum Brain Mapp 36(10):3749–3760CrossRef Govindarajan, K. A., Datta, S., Hasan, K. M., Choi, S., Rahbar, M. H., Cofield, S. S., Group, C. I (2015) Effect of in-painting on cortical thickness measurements in multiple sclerosis: a large cohort study. Hum Brain Mapp 36(10):3749–3760CrossRef
Metadaten
Titel
Associations between corpus callosum damage, clinical disability, and surface-based homologous inter-hemispheric connectivity in multiple sclerosis
verfasst von
Andrew W. Russo
Kirsten E. Stockel
Sean M. Tobyne
Chanon Ngamsombat
Kristina Brewer
Aapo Nummenmaa
Susie Y. Huang
Eric C. Klawiter
Publikationsdatum
10.05.2022
Verlag
Springer Berlin Heidelberg
Erschienen in
Brain Structure and Function / Ausgabe 9/2022
Print ISSN: 1863-2653
Elektronische ISSN: 1863-2661
DOI
https://doi.org/10.1007/s00429-022-02498-7

Weitere Artikel der Ausgabe 9/2022

Brain Structure and Function 9/2022 Zur Ausgabe

Leitlinien kompakt für die Neurologie

Mit medbee Pocketcards sicher entscheiden.

Seit 2022 gehört die medbee GmbH zum Springer Medizin Verlag

Update Neurologie

Bestellen Sie unseren Fach-Newsletter und bleiben Sie gut informiert.