Magnetic Nanoparticles Restore Movement in Mice With Parkinson’s-Like Symptoms
Researchers have developed a magnetic method for influencing deep-brain circuits without permanently implanted electrodes.
Researchers developed a minimally invasive technique that uses magnetic nanoparticles to modulate deep brain circuits in a mouse model of Parkinson’s disease. The particles are injected into the subthalamic nucleus and, when exposed to an external magnetic field, generate tiny mechanical forces that activate mechanosensitive ion channels in nearby neurons.
This magnetomechanical stimulation significantly improved movement problems in the mice, producing benefits comparable to conventional deep brain stimulation but without permanently implanted electrodes. Safety tests showed the nanoparticles remained in the brain for months without signs of inflammation.
Future work aims to deliver particles through the bloodstream and to build wearable devices, such as a headband, to generate the needed magnetic fields, potentially offering a simpler, cheaper, and more flexible treatment.
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