Oligodendrocyte dysfunction in neurodegenerative diseases: pathological features, underlying mechanisms and therapeutic targeting.
Level 5 - mechanism / opinion, no new human data
Narrative review synthesizing mechanistic and clinical literature without original human data or systematic search methodology.
PubMed 42221032 · doi:10.3389/fnagi.2026.1843643
What was done
The authors synthesized preclinical and clinical literature in a narrative review addressing the roles of oligodendrocyte lineage cells (mature oligodendrocytes and oligodendrocyte progenitor cells) in neurodegenerative diseases such as Alzheimer's, Parkinson's, and Huntington's diseases. The review establishes a framework classifying cell-autonomous lesions, reactive changes, and therapeutic targets.
What was found
The abstract reports no numerical data or effect sizes. Qualitatively, it highlights that oligodendrocyte dysfunction actively drives disease progression rather than serving as a passive secondary consequence of neuronal death. The authors outline four interconnected pathways of tissue deterioration: myelin loss with axonal degeneration, neuroimmune disruption, cytotoxicity from pathological protein aggregation, and dysregulated metabolic signaling such as altered cholesterol turnover.
Why it matters
This review provides a unified mechanistic model distinguishing primary oligodendroglial pathology from secondary white matter remodeling across major neurodegenerative diseases. It argues for shifting from single-target regimens to multi-target glial combinatorial therapies.
Limits
As a narrative review, it lacks a systematic literature search, standardized study selection, and quantitative data synthesis. Human evidence linking oligodendrocyte dysfunction to neurodegeneration remains predominantly correlative, with limited proof of disease initiation, and translational relevance is constrained by known discrepancies between animal models and human pathology.
Cited by
- supports Loss of myelination by oligodendrocytes occurs in Alzheimer's disease.