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Human Body & Health

Which outcome results when microglial over-activation in CNS?

A)Increased localised neuroinflammation and neuron loss
B)Suppressed synaptic pruning during early development
C)Reduced amyloid plaque formation in neurons
D)Enhanced myelin repair oligodendrocytes activity

💡 Explanation

Over-activation of microglia induces release of pro-inflammatory cytokines that overwhelm inhibitory controls of *inflammatory response*, resulting in increased neuroinflammation and neuron loss, because microglia continuously release neurotoxic mediators; therefore exacerbates neurodegeneration, rather than reducing amyloid plaques.

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