Oligodendrocyte Dysfunction in Schizophrenia and Affective Disorders
Summary
Oligodendrocytes, the glial cells responsible for formation and maintenance of the myelin sheath, are critical for rapid nerve conduction and inter-regional connectivity in the brain. Converging evidence from post-mortem histology, in vivo imaging and genomic studies indicates that both schizophrenia and major affective disorders exhibit disturbances in oligodendrocyte number, maturation and function. In schizophrenia, reductions in mature oligodendrocytes and failed differentiation of oligodendrocyte progenitor cells lead to regional hypomyelination, contributing to disconnectivity between frontal, temporal and limbic circuits. Parallel findings in bipolar disorder and major depressive disorder point to overlapping deficits in white matter integrity, suggesting that mood dysregulation may also stem from impaired myelin dynamics. Underlying mechanisms include genetic risk variants affecting oligodendroglial gene networks, redox imbalance that compromises cell survival, inflammatory mediators that hinder maturation, and neurotransmitter changes—particularly NMDA receptor hypofunction—that intersect with oligodendrocyte support. These changes manifest clinically as cognitive slowing, disrupted synchronisation of neural assemblies and mood instability. Recognition of oligodendrocyte dysfunction has spurred interest in therapeutic strategies aimed at enhancing remyelination, rescuing progenitor maturation and protecting oligodendrocyte survival, offering potential to ameliorate both cognitive and affective symptom domains.
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Oligodendrocyte Dysfunction in Schizophrenia and Affective Disorders publication trend
The graph below shows the total number of articles in oligodendrocyte dysfunction in schizophrenia and affective disorders across all publications each year (not limited to Nature Index journals).
Technical terms
Oligodendrocyte: A glial cell that ensheaths axons with myelin in the central nervous system.
Myelin sheath: The multilayered lipid membrane produced by oligodendrocytes that insulates axons and accelerates electrical conduction.
Oligodendrocyte progenitor cell (OPC): A precursor cell that differentiates into mature, myelinating oligodendrocytes.
White matter: Brain tissue composed mainly of myelinated axon tracts facilitating inter-regional communication.
Remyelination: The process by which new myelin sheaths form around demyelinated axons, restoring conduction and circuit function.
References
- Glial cell deficits are a key feature of schizophrenia: implications for neuronal circuit maintenance and histological differentiation from classical neurodegeneration. Molecular Psychiatry (2024).
- The Genomic Intersection of Oligodendrocyte Dynamics in Schizophrenia and Aging Unravels Novel Pathological Mechanisms and Therapeutic Potentials. International Journal of Molecular Sciences (2024).
- Novel Treatment Strategies Targeting Myelin and Oligodendrocyte Dysfunction in Schizophrenia. Frontiers in Psychiatry (2020).
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