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Haynes G, Muhammad F, Weber KA, Khan AF, Hameed S, Shakir H, Van Hal M, Dickson D, Rohan M, Dhaher Y, Parrish T, Ding L, Smith ZA. Tract-specific magnetization transfer ratio provides insights into the severity of degenerative cervical myelopathy. Spinal Cord 2024:10.1038/s41393-024-01036-y. [PMID: 39354176 DOI: 10.1038/s41393-024-01036-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2024] [Revised: 09/18/2024] [Accepted: 09/19/2024] [Indexed: 10/03/2024]
Abstract
STUDY DESIGN Cross-sectional study. OBJECTIVES This study's goal is to report whether Magnetization Transfer Ratio (MTR) can evaluate the severity of white matter (WM) injury in degenerative cervical myelopathy (DCM). SETTING Laureate Institute of Brain Research, USA; Department of Neurosurgery, University of Oklahoma Health Sciences Center, USA. METHODS 27 DCM patients were aged-matched with 20 healthy controls (HC) and categorized into treatment groups based on modified Japanese Orthopedic Association (mJOA) severity (11 mild and 16 moderate/severe). Regional and tract MTRs were extracted from the two vertebral levels containing maximum compression within magnetization transfer images. MTR differences between groups were assessed using a one-way ANOVA or Kruskal-Wallis test. The association between MTR and mJOA measures was evaluated using Spearman's correlation. RESULTS Significant decreases in MTR were found between HC and moderate/severe groups in the overall (p = 0.0065) and ventral (p = 0.0009) WM regions; and ventral corticospinal (p = 0.0101), ventral reticulospinal (p = 0.0084), spinal lemniscus (p = 0.0079), and fasciculus cuneatus (p = 0.0219) tracts. The spinal lemniscus MTR also significantly decreased between HC and mild groups (p = 0.038). Ventral reticulospinal tract MTR correlated with upper (r = 0.439; p = 0.022) and lower (r = 0.386; p = 0.047) limb motor mJOA scores. CONCLUSIONS Significant tract-based MTR changes and correlations align with known DCM symptoms, are demonstrated to be lost at the regional level, and display the inhomogeneous compressive damage occurring within DCM spinal cords.
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Affiliation(s)
- Grace Haynes
- Stephenson School of Biomedical Engineering, University of Oklahoma, Norman, OK, USA.
| | - Fauziyya Muhammad
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
| | - Kenneth A Weber
- Division of Pain Medicine, Stanford University School of Medicine, Palo Alto, CA, USA
| | - Ali F Khan
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
| | - Sanaa Hameed
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
| | - Hakeem Shakir
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
| | - Michael Van Hal
- Department of Orthopedic Surgery, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Douglas Dickson
- Department of Orthopedic Surgery, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Michael Rohan
- Laureate Institute of Brain Research, Tulsa, OK, USA
| | - Yasin Dhaher
- Department of Physical Medicine and Rehabilitation, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Todd Parrish
- Department of Radiology, Northwestern Feinberg School of Medicine, Chicago, IL, USA
| | - Lei Ding
- Stephenson School of Biomedical Engineering, University of Oklahoma, Norman, OK, USA
| | - Zachary A Smith
- Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
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Nouri A, Molliqaj G, Schaller K, Tessitore E. Changes in cortical thickness: yet another indication of supraspinal adaptations in degenerative cervical myelopathy. Brain Commun 2024; 6:fcae322. [PMID: 39364310 PMCID: PMC11448327 DOI: 10.1093/braincomms/fcae322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2024] [Revised: 08/12/2024] [Accepted: 09/18/2024] [Indexed: 10/05/2024] Open
Abstract
This scientific commentary refers to 'Patterns of cortical thickness alterations in degenerative cervical myelopathy: associations with dexterity and gait dysfunctions', by Muhammad et al. (https://doi.org/10.1093/braincomms/fcae279).
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Affiliation(s)
- Aria Nouri
- Division of Neurosurgery, Geneva University Hospitals, Geneva 1205, Switzerland
| | - Granit Molliqaj
- Division of Neurosurgery, Geneva University Hospitals, Geneva 1205, Switzerland
| | - Karl Schaller
- Division of Neurosurgery, Geneva University Hospitals, Geneva 1205, Switzerland
| | - Enrico Tessitore
- Division of Neurosurgery, Geneva University Hospitals, Geneva 1205, Switzerland
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