Neuroinflammation and Neurodegeneration Mechanisms

When the brain is injured or diseased, its resident immune cells—microglia and astrocytes—mount inflammatory responses that can be both protective and destructive, and understanding when that balance tips toward harm is central to modern neurology. Researchers study how these cells regulate processes like synaptic pruning, release signaling proteins called cytokines, and interact with receptors such as TREM2 to either clear cellular debris or accelerate neuronal death in conditions ranging from Alzheimer's disease to ischemic stroke and traumatic brain injury. A core open question is why neuroinflammation sometimes resolves cleanly and other times becomes chronic, driving the progressive neuron loss that defines most neurodegenerative diseases. Active work is focused on identifying which molecular signals govern this transition and whether targeting specific immune pathways can slow or prevent disease progression without compromising the brain's normal immune defenses.

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Keywords

MicrogliaNeuroinflammationNeurodegenerationAstrocytesSynaptic PruningIschemic Stroke