Changes in the cortical GABAergic inhibitory system in a Spinal Muscular Atrophy mouse model - PubMed
5 hours ago
- #neurodegenerative diseases
- #Spinal Muscular Atrophy
- #GABAergic system
- The study investigates changes in the cortical GABAergic inhibitory system in a Spinal Muscular Atrophy (SMA) mouse model.
- SMA is characterized by lower motor neuron degeneration and muscle atrophy due to lack of Survival Motor Neuron (SMN) protein.
- Evidence suggests motor cortex abnormalities in SMA patients correlate with disease severity, indicating altered maturation and maladaptive plasticity.
- The study employs imaging, molecular techniques, and electrophysiology to analyze GABAergic signaling, metabolism, and interneuron function in SMA mice.
- Findings reveal impaired density, morphology, and signaling of GABAergic Parvalbumin-positive interneurons in late-stage SMA mice, suggesting excitatory-inhibitory (E/I) imbalance.
- SMN deficiency impacts neuronal-astrocyte interactions regulating GABA metabolism, release, and reuptake.
- The study highlights the role of altered motor cortical GABAergic neurotransmission in SMA progression and suggests new therapeutic approaches.