Longitudinal fMRI studies: Exploring brain plasticity and repair in MS

Area of Science:

• Neuroimaging
• Neurology
• Clinical Neuroscience

Background:

• Functional magnetic resonance imaging (fMRI) has significantly advanced understanding of cerebral changes in multiple sclerosis (MS).
• Current knowledge on brain plasticity and repair in MS primarily relies on cross-sectional fMRI studies across diverse disease phenotypes.
• Cross-sectional designs present limitations in capturing the dynamic nature of MS progression and adaptation.

Purpose of the Study:

• To review existing fMRI research on cerebral changes in MS, focusing on brain plasticity and repair.
• To highlight the limitations of cross-sectional fMRI studies in MS research.
• To discuss the potential and challenges of longitudinal (serial) fMRI for tracking disease evolution and treatment response in MS.

Main Methods:

• Review of existing literature on fMRI studies in multiple sclerosis.
• Analysis of cross-sectional and longitudinal fMRI study designs.
• Discussion of methodological considerations for serial fMRI in MS.

Main Results:

• Cross-sectional fMRI studies provide a snapshot but cannot fully elucidate dynamic brain changes in MS.
• Longitudinal fMRI studies, though fewer, offer greater potential for understanding adaptation and repair mechanisms.
• Serial fMRI can track evolving disease and monitor responses to interventions.

Conclusions:

• Longitudinal fMRI is crucial for a deeper understanding of brain plasticity and repair in multiple sclerosis.
• Serial fMRI can effectively monitor treatment efficacy for disease-modifying therapies and rehabilitation.
• Future research should prioritize longitudinal designs to overcome methodological limitations and advance MS neuroimaging.