Damage to the brain and spinal cord triggers cellular responses that can either support healing or worsen injury. Three studies examine how immune cells, support cells, and signaling pathways shape recovery in vascular dementia, ischemic stroke, and spinal cord injury. Together, they suggest better outcomes may depend on changing how surrounding cells respond to damage, not just protecting neurons.
In vascular dementia, umbilical cord blood cells improved cognition and reduced white matter injury by helping microglia clear damaged myelin. In ischemic stroke, oxidative stress prompted astrocytes to produce collagen, creating a harmful barrier linked to neuronal death. Blocking this process reduced damage and improved recovery. In spinal cord injury, cerebral dopamine neurotrophic factor reduced inflammation and supported nerve fiber regeneration by targeting JNK signaling. These findings highlight the potential of guiding the nervous system’s cellular environment toward repair.
1. Anatomic feasibility of intercostal-to-femoral and ulnar-to-sciatic nerve transfers for lower extremity neurotization after traumatic spinal cord injury
This cadaver study found that intercostal-to-femoral and ulnar-to-sciatic nerve transfers could be performed without grafts or excess tension. The findings offer an anatomic foundation for future work on restoring lower extremity function after traumatic spinal cord injury.
2. Targeting SLK protects against cerebral ischemia–reperfusion injury by regulating USP8- mediated HIF-1α stabilization and RhoA/ROCK activation
Targeting SLK helped reduce brain injury after ischemia-reperfusion by lowering oxidative stress, inflammation, and neuronal apoptosis. The benefits appear tied to the USP8-HIF-1α-RhoA/ROCK pathway.
3. Higher physical activity levels mitigate synaptic protein loss and cognitive deterioration in aging and in Alzheimer’s disease: a 10-year longitudinal study
Higher physical activity was linked to slower synaptic protein loss over 10 years in aging and preclinical Alzheimer’s disease. It was also associated with slower cognitive decline in participants with preclinical AD.
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