AI Article Synopsis

  • The study investigates the glymphatic system's role in disability due to multiple sclerosis (MS) using a non-invasive imaging technique called diffusion-tensor image analysis along the perivascular space (DTI-ALPS).
  • It involved 118 MS patients divided into two groups based on disability levels, measuring brain parenchymal fraction, lesion load, and DTI-ALPS index.
  • Results showed significant differences in glymphatic function between the groups, with the DTI-ALPS index correlating with disease duration and disability, suggesting its potential as a biomarker for MS-related disability.

Article Abstract

Background: The role of the glymphatic system in multiple sclerosis (MS)-related disability remains underexplored. Diffusion-tensor image analysis along the perivascular space (DTI-ALPS) offers a non-invasive method to assess glymphatic function.

Objective: To evaluate glymphatic function in MS patients with lower and higher disability.

Methods: This study included 118 MS patients who underwent structural, diffusion-weighted imaging, and clinical assessment. The participants were divided into lower (MS-L,  = 57) and higher disability (MS-H,  = 61) subgroups. Brain parenchymal fraction (BPF), lesion load (LL), and DTI-ALPS index were measured. Subgroup differences and correlations between DTI-ALPS index and other measures were explored. Logistic regression was performed to evaluate BPF, LL, and DTI-ALPS index in classifying lower and higher disability patients.

Results: Significant differences in DTI-ALPS index between MS-H and MS-L ( = -0.71, false discovery rate-corrected -value (FDR) = 0.001) were found. The DTI-ALPS index correlated significantly with disease duration ( = -0.29, FDR = 0.002) and EDSS ( = -0.35, FDR = 0.0002). It also showed significant correlations with BPF and LL. DTI-ALPS index and LL were significant predictors of disability subgroup (DTI-ALPS: odds ratio (OR) = 1.77,  = 0.04, LL: OR = 0.94,  = 0.02).

Conclusion: Our findings highlight DTI-ALPS index as an imaging biomarker in MS, suggesting the involvement of glymphatic impairment in MS pathology, although further research is needed to elucidate its role in contributing to MS-related disability.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11568644PMC
http://dx.doi.org/10.1177/13524585241280842DOI Listing

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