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Advanced Magnetic Resonance Imaging Biomarkers of the Injured Spinal Cord: A Comparative Study of Imaging and Histology in Human Traumatic Spinal Cord Injury.
Morris, Sarah; Swift-LaPointe, Taylor; Yung, Andrew; Prevost, Valentin; George, Shana; Bauman, Andrew; Kozlowski, Piotr; Samadi-Bahrami, Zahra; Fournier, Caron; Mattu, Pushwant Singh; Parker, Lisa; Streijger, Femke; Hirsch-Reinshagen, Veronica; Moore, G R Wayne; Kwon, Brian K; Laule, Cornelia.
Afiliación
  • Morris S; International Collaboration on Repair Discoveries (ICORD), Departments of University of British Columbia (UBC), Vancouver, British Columbia, Canada.
  • Swift-LaPointe T; Physics and Astronomy, University of British Columbia (UBC), Vancouver, British Columbia, Canada.
  • Yung A; Radiology, University of British Columbia (UBC), Vancouver, British Columbia, Canada.
  • Prevost V; Physics and Astronomy, University of British Columbia (UBC), Vancouver, British Columbia, Canada.
  • George S; International Collaboration on Repair Discoveries (ICORD), Departments of University of British Columbia (UBC), Vancouver, British Columbia, Canada.
  • Bauman A; Radiology, University of British Columbia (UBC), Vancouver, British Columbia, Canada.
  • Kozlowski P; UBC MRI Research Centre, University of British Columbia (UBC), Vancouver, British Columbia, Canada.
  • Samadi-Bahrami Z; International Collaboration on Repair Discoveries (ICORD), Departments of University of British Columbia (UBC), Vancouver, British Columbia, Canada.
  • Fournier C; Radiology, University of British Columbia (UBC), Vancouver, British Columbia, Canada.
  • Mattu PS; UBC MRI Research Centre, University of British Columbia (UBC), Vancouver, British Columbia, Canada.
  • Parker L; International Collaboration on Repair Discoveries (ICORD), Departments of University of British Columbia (UBC), Vancouver, British Columbia, Canada.
  • Streijger F; International Collaboration on Repair Discoveries (ICORD), Departments of University of British Columbia (UBC), Vancouver, British Columbia, Canada.
  • Hirsch-Reinshagen V; Radiology, University of British Columbia (UBC), Vancouver, British Columbia, Canada.
  • Moore GRW; UBC MRI Research Centre, University of British Columbia (UBC), Vancouver, British Columbia, Canada.
  • Kwon BK; International Collaboration on Repair Discoveries (ICORD), Departments of University of British Columbia (UBC), Vancouver, British Columbia, Canada.
  • Laule C; Physics and Astronomy, University of British Columbia (UBC), Vancouver, British Columbia, Canada.
J Neurotrauma ; 41(9-10): 1223-1239, 2024 05.
Article en En | MEDLINE | ID: mdl-38318802
ABSTRACT
A significant problem in the diagnosis and management of traumatic spinal cord injury (tSCI) is the heterogeneity of secondary injury and the prediction of neurological outcome. Imaging biomarkers specific to myelin loss and inflammation after tSCI would enable detailed assessment of the pathophysiological processes underpinning secondary damage to the cord. Such biomarkers could be used to biologically stratify injury severity and better inform prognosis for neurological recovery. While much work has been done to establish magnetic resonance imaging (MRI) biomarkers for SCI in animal models, the relationship between imaging findings and the underlying pathology has been difficult to discern in human tSCI because of the paucity of human spinal cord tissue. We utilized post-mortem spinal cords from individuals who had a tSCI to examine this relationship by performing ex vivo MRI scans before histological analysis. We investigated the correlation between the histological distribution of myelin loss and inflammatory cells in the injured spinal cord and a number of myelin and inflammation-sensitive MRI

measures:

myelin water fraction (MWF), inhomogeneous magnetization transfer ratio (ihMTR), and diffusion tensor and diffusion kurtosis imaging-derived fractional anisotropy (FA) and axial, radial, and mean diffusivity (AD, RD, MD). The histological features were analyzed by staining with Luxol Fast Blue (LFB) for myelin lipids and Class II major histocompatibility complex (Class II MHC) and CD68 for microglia and macrophages. Both MWF and ihMTR were strongly correlated with LFB staining for myelin, supporting the use of both as biomarkers for myelin loss after SCI. A decrease in ihMTR was also correlated with the presence of Class II MHC positive immune cells. FA and RD correlated with both Class II MHC and CD68 and may therefore be useful biomarkers for inflammation after tSCI. Our work demonstrates the utility of advanced MRI techniques sensitive to biological tissue damage after tSCI, which is an important step toward using these MRI techniques in the clinic to aid in decision-making.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Traumatismos de la Médula Espinal / Imagen por Resonancia Magnética / Biomarcadores Tipo de estudio: Prognostic_studies Límite: Adult / Aged / Aged80 / Female / Humans / Male / Middle aged Idioma: En Revista: J Neurotrauma Asunto de la revista: NEUROLOGIA / TRAUMATOLOGIA Año: 2024 Tipo del documento: Article País de afiliación: Canadá Pais de publicación: Estados Unidos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Traumatismos de la Médula Espinal / Imagen por Resonancia Magnética / Biomarcadores Tipo de estudio: Prognostic_studies Límite: Adult / Aged / Aged80 / Female / Humans / Male / Middle aged Idioma: En Revista: J Neurotrauma Asunto de la revista: NEUROLOGIA / TRAUMATOLOGIA Año: 2024 Tipo del documento: Article País de afiliación: Canadá Pais de publicación: Estados Unidos