ArticleNature neuroscience2025
Differential synaptic depression mediates the therapeutic effect of deep brain stimulation.
Article in Nature neuroscience, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Deep brain stimulation (DBS) effectively treats drug-resistant neurological and psychiatric disorders, yet its mechanisms remain unclear. Here we show that high-frequency DBS of the subthalamic nucleus (STN), a common target for Parkinson's disease (PD), activates afferent axons while inhibiting STN neurons. These contrasting presynaptic and postsynaptic effects arise from a decrease in local neurotransmitter release with a larger decrease in glutamate than GABA, shifting the excitation/inhibition balance toward inhibition. Chemogenetic inhibition, but not excitation, of STN neurons mimics the therapeutic effects of DBS in 6-OHDA-lesioned PD mice. Acute and chronic bilateral chemogenetic STN inhibition restores motor function in a progressive PD mouse model. These findings suggest that inhibition of STN, caused by differential depression of glutamatergic and GABAergic synapses, is a key mechanism of therapeutic DBS. 'Chemogenetic DBS', direct chemogenetic inhibition of postsynaptic neurons, may offer a less invasive and more affordable alternative to electrical DBS for PD and other neurological disorders.
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