Ultrasound combined with hollow silica nanostructures may offer less invasive Parkinson's therapy
Researchers at Hong Kong Polytechnic University used low-intensity ultrasound together with engineered hollow silica nanostructures to stimulate specific brain regions in mice. The technique produced sustained, localized neuromodulation over weeks and showed therapeutic effects in Parkinson's disease models. The team suggests this approach could provide a precise, less invasive alternative to deep brain stimulation, though it remains experimental.
Parkinson's disease is a common age-related neurological condition that disrupts movement control, producing tremor, stiffness, slowness, and balance problems. It is chiefly associated with progressive loss of dopamine-producing neurons. Existing drugs like levodopa can help early on, but their consistency may decline, while deep brain stimulation requires implanted electrodes.
At Hong Kong Polytechnic University, researchers paired low-intensity ultrasound with hollow silica nanostructures. In mice, these structures remained responsive for over nine weeks, allowing repeated stimulation of motor cortex, striatum, VTA, and subthalamic nucleus without genetic alteration or repeated brain injections. Targeting the subthalamic nucleus raised dopamine signaling and helped preserve dopamine-related neurons in Parkinson's models.
If validated, this approach could matter most to people with Parkinson's disease, especially older adults facing movement symptoms and limited treatment consistency. A less invasive option might reduce reliance on implanted electrodes and their surgical risks, potentially broadening access to neuromodulation. Clinicians and caregivers may see different care planning if durable, precise ultrasound stimulation proves safe and effective. However, human benefit remains uncertain because evidence is currently preclinical and experimental.