Pontine pathology mediates common symptoms of blast-induced chronic mild traumatic brain injury - PubMed
6 hours ago
- #Brainstem
- #Traumatic Brain Injury
- #Neuropathology
- Repeated blast-induced mild traumatic brain injury (mTBI) leads to chronic post-concussive symptoms (PCS) like sleep fragmentation.
- Studies in mice show that repeated mTBI causes persistent activation of disease-associated microglia and myelin phagocytosis in the pontine reticular formation.
- In veterans with repeated blast-mTBI, microglial nodules were found decades after injury, and diffusion tensor imaging revealed dose-dependent pontine myelin disruption.
- Pontine myelin disruption statistically mediates sleep disturbances and broad PCS, identifying it as both a biomarker and mechanistic driver of chronic symptoms.
- Brainstem microglia and oligodendrocytes are highlighted as potential therapeutic targets for chronic PCS after repeated diffuse mTBI.