![\"Human](\"https:\/\/scitechdaily.com\/images\/Human-Brain-Degenerated-Substantia-Nigra-Parkinsons-Disease.jpg\")
<\/a>Researchers have developed a magnetic methodology for influencing deep-brain circuits with out completely implanted electrodes.<\/strong><\/p>\n A magnetic subject might supply a brand new solution to attain circuits buried deep inside the mind with out completely implanting electrodes. A world analysis group injected magnetic nanoplatelets right into a focused mind area and used them to enhance motion issues in mice with Parkinson\u2019s-like signs.<\/p>\n The strategy is much less invasive than typical deep mind stimulation, which depends on surgically implanted electrodes and is used for some individuals with Parkinson\u2019s illness. Researchers from Friedrich-Alexander-Universit\u00e4t Erlangen-N\u00fcrnberg (FAU), RWTH Aachen, Maastricht University<\/span> (the Netherlands), and KU Leuven (Belgium) reported the findings in Advanced Science<\/em>.<\/p>\n Parkinson\u2019s disease gradually destroys brain cells that produce dopamine<\/span>, a chemical messenger essential for controlling movement. As dopamine levels fall, motor circuits begin to malfunction, causing tremors and other movement difficulties.<\/p>\n Some patients receive a brain pacemaker, a small device placed beneath the collarbone that sends electrical signals to the subthalamic nucleus (STN for short), a region deep inside the brain. Stimulating this area can alter abnormal neural activity and reduce movement symptoms.<\/p>\n \u201cThe procedure is relatively complex, however, and not always successful,\u201d explains Prof. Dr. Danijela Gregurec from the Department of Chemistry and Pharmacy at FAU. \u201cThis puts many Parkinson\u2019s patients off, and not all patients are suitable candidates for one of these pacemakers.\u201d<\/p>\n The magnetic technique could eventually provide a less invasive option because it reaches deep brain regions without requiring electrodes to remain permanently implanted.<\/p>\n \u201cWe use magnetic nanoparticles that we implant in the brain,\u201d Gregurec explains. \u201cThey have a special shape and a magnetic structure. They were developed in order to transform magnetic fields into tiny mechanical forces.\u201d<\/p>\n Unlike standard deep brain stimulation, the technique does not send electricity directly into the brain. \u201cThe traditional method establishes an electrical connection to the brain,\u201d she says. \u201cIn contrast, we use the neurons\u2019 natural mechanosensors to influence regions deep within the brain.\u201d<\/p>\n When a magnetic field surrounds the brain, the particles respond by producing very small mechanical forces. These forces gently deform nearby cell membranes, much as pressing a finger against an inflated balloon changes its shape. That pressure opens mechanosensitive channels and allows electrically charged ions to enter the nerve cells.<\/p>\n The researchers tested the method in animal models with damage to the same nerve cells affected in people with Parkinson\u2019s disease. This produced similar movement problems.<\/p>\n \u201cTogether with our partners from Maastricht, we injected magnetic nanoparticles developed here at FAU into the animals\u2019 subthalamic nucleus,\u201d Gregurec explains. \u201cThat is the very region in the brain that is also an important target for conventional deep brain stimulation in Parkinson\u2019s disease.\u201d<\/p>\n Using high-precision stereotactic procedures, the researchers placed the particles directly into the intended brain region. Accurate positioning was essential because the treatment needed to reach the correct motor circuit.<\/p>\n After the mice were exposed to a magnetic field, their movement deficits improved significantly. \u201cThe effect is roughly equivalent to what we would have expected after implanting a brain pacemaker,\u201d says Gregurec.<\/p>\n The magnetic particles remained in the animals\u2019 brains for several months without producing signs of inflammation, suggesting that they were well tolerated during the test period.<\/p>\n Gregurec\u2019s group is now exploring ways to avoid injecting the particles directly into the brain. One possibility would be to administer them through the bloodstream and design them to cross the blood-brain barrier.<\/p>\n The researchers are also investigating compact wearable devices capable of generating the necessary magnetic fields. A headband that patients could place on themselves is one possible design, although the approach is still several years away from potential clinical use.<\/p>\n \u201cNevertheless, we are convinced that the new method has enormous potential,\u201d Gregurec states. \u201cIt is not only considerably simpler and cheaper than a conventional brain pacemaker, it is probably also more flexible. Adjusting the parameters of the magnetic field would allow us to control the nanoparticles more accurately.\u201d<\/p>\n The technique could also serve as a research tool for examining how tiny mechanical forces alter brain activity.<\/p>\n Reference: \u201cRemote Magnetomechanical Neuromodulation Uncovers Therapeutic Mechanisms for Alleviating Parkinsonian Symptoms in Freely Moving Mice\u201d by Anouk Wolters, Lorenzo Signorelli, Christian Herff, Sophia Gimple, Renzo Riemens, Gunter Kenis, Kim Rijkers, Hamed Shabani, Jyh-Jang Sun, Yasin Temel, Hans Clusmann, Danijela Gregurec and Sarah-Anna Hescham, 3 April 2026, Advanced Science<\/i>. Never miss a breakthrough: Join the SciTechDaily newsletter.<\/a><\/b><\/a>Mechanical forces activate deep brain circuits<\/h4>\n
Magnetic stimulation improves movement in mice<\/h4>\n
Safety results support further development<\/h4>\n
DOI: 10.1002\/advs.75097<\/a><\/p>\n
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