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Modulation of the Association Between Corticospinal Tract Damage and Outcome After Stroke by White Matter Hyperintensities.
Ferris, Jennifer K; Lo, Bethany P; Barisano, Giuseppe; Brodtmann, Amy; Buetefisch, Cathrin M; Conforto, Adriana B; Donnelly, Miranda R; Egorova-Brumley, Natalia; Hayward, Kathryn S; Khlif, Mohamed Salah; Revill, Kate P; Zavaliangos-Petropulu, Artemis; Boyd, Lara; Liew, Sook-Lei.
Affiliation
  • Ferris JK; From the Gerontology Research Centre (J.K.F.), Simon Fraser University; Department of Physical Therapy and Djavad Mowafaghian Centre for Brain Health (J.K.F.), University of British Columbia, Vancouver, Canada; Chan Division of Occupational Science and Occupational Therapy (B.P.L., M.R.D., S.-L.L.),
  • Lo BP; From the Gerontology Research Centre (J.K.F.), Simon Fraser University; Department of Physical Therapy and Djavad Mowafaghian Centre for Brain Health (J.K.F.), University of British Columbia, Vancouver, Canada; Chan Division of Occupational Science and Occupational Therapy (B.P.L., M.R.D., S.-L.L.),
  • Barisano G; From the Gerontology Research Centre (J.K.F.), Simon Fraser University; Department of Physical Therapy and Djavad Mowafaghian Centre for Brain Health (J.K.F.), University of British Columbia, Vancouver, Canada; Chan Division of Occupational Science and Occupational Therapy (B.P.L., M.R.D., S.-L.L.),
  • Brodtmann A; From the Gerontology Research Centre (J.K.F.), Simon Fraser University; Department of Physical Therapy and Djavad Mowafaghian Centre for Brain Health (J.K.F.), University of British Columbia, Vancouver, Canada; Chan Division of Occupational Science and Occupational Therapy (B.P.L., M.R.D., S.-L.L.),
  • Buetefisch CM; From the Gerontology Research Centre (J.K.F.), Simon Fraser University; Department of Physical Therapy and Djavad Mowafaghian Centre for Brain Health (J.K.F.), University of British Columbia, Vancouver, Canada; Chan Division of Occupational Science and Occupational Therapy (B.P.L., M.R.D., S.-L.L.),
  • Conforto AB; From the Gerontology Research Centre (J.K.F.), Simon Fraser University; Department of Physical Therapy and Djavad Mowafaghian Centre for Brain Health (J.K.F.), University of British Columbia, Vancouver, Canada; Chan Division of Occupational Science and Occupational Therapy (B.P.L., M.R.D., S.-L.L.),
  • Donnelly MR; From the Gerontology Research Centre (J.K.F.), Simon Fraser University; Department of Physical Therapy and Djavad Mowafaghian Centre for Brain Health (J.K.F.), University of British Columbia, Vancouver, Canada; Chan Division of Occupational Science and Occupational Therapy (B.P.L., M.R.D., S.-L.L.),
  • Egorova-Brumley N; From the Gerontology Research Centre (J.K.F.), Simon Fraser University; Department of Physical Therapy and Djavad Mowafaghian Centre for Brain Health (J.K.F.), University of British Columbia, Vancouver, Canada; Chan Division of Occupational Science and Occupational Therapy (B.P.L., M.R.D., S.-L.L.),
  • Hayward KS; From the Gerontology Research Centre (J.K.F.), Simon Fraser University; Department of Physical Therapy and Djavad Mowafaghian Centre for Brain Health (J.K.F.), University of British Columbia, Vancouver, Canada; Chan Division of Occupational Science and Occupational Therapy (B.P.L., M.R.D., S.-L.L.),
  • Khlif MS; From the Gerontology Research Centre (J.K.F.), Simon Fraser University; Department of Physical Therapy and Djavad Mowafaghian Centre for Brain Health (J.K.F.), University of British Columbia, Vancouver, Canada; Chan Division of Occupational Science and Occupational Therapy (B.P.L., M.R.D., S.-L.L.),
  • Revill KP; From the Gerontology Research Centre (J.K.F.), Simon Fraser University; Department of Physical Therapy and Djavad Mowafaghian Centre for Brain Health (J.K.F.), University of British Columbia, Vancouver, Canada; Chan Division of Occupational Science and Occupational Therapy (B.P.L., M.R.D., S.-L.L.),
  • Zavaliangos-Petropulu A; From the Gerontology Research Centre (J.K.F.), Simon Fraser University; Department of Physical Therapy and Djavad Mowafaghian Centre for Brain Health (J.K.F.), University of British Columbia, Vancouver, Canada; Chan Division of Occupational Science and Occupational Therapy (B.P.L., M.R.D., S.-L.L.),
  • Boyd L; From the Gerontology Research Centre (J.K.F.), Simon Fraser University; Department of Physical Therapy and Djavad Mowafaghian Centre for Brain Health (J.K.F.), University of British Columbia, Vancouver, Canada; Chan Division of Occupational Science and Occupational Therapy (B.P.L., M.R.D., S.-L.L.),
  • Liew SL; From the Gerontology Research Centre (J.K.F.), Simon Fraser University; Department of Physical Therapy and Djavad Mowafaghian Centre for Brain Health (J.K.F.), University of British Columbia, Vancouver, Canada; Chan Division of Occupational Science and Occupational Therapy (B.P.L., M.R.D., S.-L.L.),
Neurology ; 102(10): e209387, 2024 May 28.
Article in En | MEDLINE | ID: mdl-38701386
ABSTRACT
BACKGROUND AND

OBJECTIVES:

Motor outcomes after stroke relate to corticospinal tract (CST) damage. The brain leverages surviving neural pathways to compensate for CST damage and mediate motor recovery. Thus, concurrent age-related damage from white matter hyperintensities (WMHs) might affect neurologic capacity for recovery after CST injury. The role of WMHs in post-stroke motor outcomes is unclear. In this study, we evaluated whether WMHs modulate the relationship between CST damage and post-stroke motor outcomes.

METHODS:

We used data from the multisite ENIGMA Stroke Recovery Working Group with T1 and T2/fluid-attenuated inversion recovery imaging. CST damage was indexed with weighted CST lesion load (CST-LL). WMH volumes were extracted with Freesurfer's SAMSEG. Mixed-effects beta-regression models were fit to test the impact of CST-LL, WMH volume, and their interaction on motor impairment, controlling for age, days after stroke, and stroke volume.

RESULTS:

A total of 223 individuals were included. WMH volume related to motor impairment above and beyond CST-LL (ß = 0.178, 95% CI 0.025-0.331, p = 0.022). Relationships varied by WMH severity (mild vs moderate-severe). In individuals with mild WMHs, motor impairment related to CST-LL (ß = 0.888, 95% CI 0.604-1.172, p < 0.001) with a CST-LL × WMH interaction (ß = -0.211, 95% CI -0.340 to -0.026, p = 0.026). In individuals with moderate-severe WMHs, motor impairment related to WMH volume (ß = 0.299, 95% CI 0.008-0.590, p = 0.044), but did not significantly relate to CST-LL or a CST-LL × WMH interaction.

DISCUSSION:

WMHs relate to motor outcomes after stroke and modify relationships between motor impairment and CST damage. WMH-related damage may be under-recognized in stroke research as a factor contributing to variability in motor outcomes. Our findings emphasize the importance of brain structural reserve in motor outcomes after brain injury.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Pyramidal Tracts / Stroke / White Matter Limits: Aged / Aged80 / Female / Humans / Male / Middle aged Language: En Journal: Neurology Year: 2024 Type: Article
Fulltext
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Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Pyramidal Tracts / Stroke / White Matter Limits: Aged / Aged80 / Female / Humans / Male / Middle aged Language: En Journal: Neurology Year: 2024 Type: Article