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Opposing excitatory and inhibitory synaptic pathologies drive ZC4H2-associated intellectual disability 11/05/2026

Ma et al. demonstrate that ZC4H2 mutations underlying intellectual disability stratify into two opposing pathomechanisms disrupting excitatory-inhibitory balance—either reduced GABAA receptor stability and synaptic hypo-inhibition or enhanced AMPA receptor stability and synaptic hyper-excitation. Notably, targeting the respective receptor with muscimol or perampanel rescues cognitive deficits in corresponding mouse models.

P2RX7 drives inflammatory microglia and pathogenic extracellular vesicle secretion in tauopathy 11/04/2026

Bodart-Santos et al. identify P2RX7 as a microglial checkpoint that drives inflammatory-state transition and pathogenic extracellular vesicle release in tauopathy. P2RX7 promotes EV-mediated tau propagation and mitochondrial danger signaling, linking microglial activation to neurodegeneration and highlighting the P2RX7-EV axis as a therapeutic target.

Redox-dependent remodeling of mitochondrial nucleoids contributes to bioenergetic decline during neuronal aging 11/03/2026

Cheng, Gao, et al. reveal that oxidative stress remodels mitochondrial DNA organization in aging neurons, disrupting mitochondrial gene expression and bioenergetics. Species-specific TFAM redox mechanisms converge on mt-nucleoid decompaction. Expression of redox-resistant TFAM restores mt-nucleoid compaction and ATP production, revealing a conserved mechanism linking oxidative stress to mitochondrial dysfunction.

Hypothalamus-driven brain health through metabolic flexibility 11/03/2026

Horvath et al. propose that hypothalamus-controlled metabolic flexibility coordinates body-brain communication, enabling physiological state to shape cognition and behavior, while its deterioration during aging and metabolic disease promotes inflammation, cognitive decline, and vulnerability to neurodegeneration.