Interplay and relative contributions of inflammatory lesions and compartmentalized neurodegeneration to MS cognitive impairment

Ascertain the precise interplay and quantify the relative contributions of focal inflammatory lesions and compartmentalized neurodegeneration to cognitive impairment in multiple sclerosis, with particular attention to how these mechanisms relate to thalamic atrophy and information processing speed deficits.

Background

The paper frames MS cognitive impairment as resulting from two distinct pathological processes: focal inflammatory lesions characteristic of relapsing disease and compartmentalized neurodegeneration that occurs independently of inflammatory activity. Although both mechanisms are implicated in thalamic atrophy and slowed information processing, their respective roles and interactions have not been fully delineated.

Clarifying this interplay is important for understanding persistent cognitive decline despite suppression of relapse activity by disease-modifying therapies and for guiding nucleus-specific phenotyping and potential therapeutic strategies.