Chronic Inflammatory Central Nervous System Disorders
Summary
Chronic inflammatory disorders of the central nervous system (CNS) encompass a diverse group of immune-mediated conditions characterised by persistent infiltration of immune cells, disruption of neural homeostasis and progressive tissue injury. Major entities include multiple sclerosis (MS), neuromyelitis optica spectrum disorder (NMOSD) and acute disseminated encephalomyelitis (ADEM), alongside rarer syndromes such as chronic lymphocytic inflammation with pontine perivascular enhancement responsive to steroids (CLIPPERS), GFAP astrocytopathy and Susac’s syndrome. These disorders share common mechanisms—autoantibody production, complement activation, blood–brain barrier breakdown and glial dysfunction—yet differ in anatomical predilection, immunopathology and clinical course. Advances in molecular profiling, neuroimaging and immunotherapy have refined diagnostic criteria, revealed distinct cellular phenotypes within lesions and enabled targeted treatment strategies. Globally, these conditions represent a leading cause of neurological disability among young and middle-aged adults, with significant socioeconomic and personal impact. Emerging biomarkers and precision-guided therapies promise to improve prognosis by intercepting key inflammatory pathways, personalised according to lesion biology and patient-specific risk factors.
Research from Nature Portfolio
Recent studies have leveraged single-cell transcriptomics to map the heterogeneity of immune infiltrates in active MS lesions, revealing discrete microglial activation states correlated with demyelination severity and remyelination potential. Complementary work has employed spatial proteomics to delineate perivascular immune niches in NMOSD, identifying aquaporin-4–specific B-cell clusters and activated complement components as central drivers of astrocyte loss. In parallel, novel in vivo imaging of macrophage metabolism has demonstrated that modulation of glycolytic pathways can attenuate lesion formation, offering a metabolic checkpoint for therapeutic intervention across multiple chronic inflammatory CNS syndromes.
Chronic Inflammatory Central Nervous System Disorders publication trend
The graph below shows the total number of articles in chronic inflammatory central nervous system disorders across all publications each year (not limited to Nature Index journals).
Technical terms
Demyelination: Loss of the myelin sheath insulating central nervous system axons, leading to impaired nerve conduction.
Blood–brain barrier: Specialized endothelial interface that restricts passage of cells and molecules from the bloodstream into neural tissue.
Perivascular space: Fluid-filled channels surrounding cerebral blood vessels that facilitate immune cell trafficking and waste clearance.
Complement cascade: Sequential activation of plasma proteins culminating in opsonisation, cell lysis and amplification of inflammation.
Astrocytopathy: Pathological alteration or injury to astrocytes, the glial cells that support neuronal function and maintain barrier integrity.
References
- Omics-Based Approach Reveals Complement-Mediated Inflammation in Chronic Lymphocytic Inflammation With Pontine Perivascular Enhancement Responsive to Steroids (CLIPPERS). Frontiers in Immunology (2018).
- Brain miliary enhancement. Neuroradiology (2020).
- Autoimmune Brainstem Encephalitis: An Illustrative Case and a Review of the Literature. Journal of Clinical Medicine (2021).
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