Periventricular gradient pathology is linked to ependymal reactivity and cell adhesion disruption in multiple sclerosis.

Periventricular gradient pathology in MS is linked to ependymal reactivity and disruption of cell adhesion, involving immune activation and transporter dysregulation.

• Why it matters: Understanding how CSF-borne factors influence ependymal cells is crucial because it may explain mechanisms behind periventricular degeneration and disease progression in MS.
• What they did: The study used ultra-high-field MRI-guided histology, electron microscopy, and single-nucleus multiomics to analyze ependymal pathology and gene networks, identifying ligands like IFNγ that affect ependymal permeability in mice.
• The result: Findings suggest CSF-driven ependymal dysfunction contributes to periventricular pathology in MS, highlighting potential targets for therapeutic intervention to mitigate regional inflammation.