Alzheimer’s breakthrough using ultrasound
Queensland scientists have found that non-invasive ultrasound technology can be used to treat Alzheimer’s disease and restore memory.
University of Queensland researchers discovered that the innovative drug-free approach breaks apart the neurotoxic amyloid plaques that result in memory loss and cognitive decline.
QBI Founding Director Professor Perry Bartlett said the discovery – a result of ‘game-changing’ work performed at the Queensland Brain Institute’s Clem Jones Centre for Ageing Dementia Research – was made possible through the support of the State and Federal Governments and philanthropic support led by the Clem Jones Foundation.
“I believe the work opens up an entirely novel avenue for future therapeutic treatment.”
Clem Jones Centre for Ageing Dementia Research director Professor Jürgen Götz said the new treatment method could revolutionise Alzheimer’s treatment by restoring memory.
“We’re extremely excited by this innovation of treating Alzheimer’s without using drug therapeutics,” Professor Götz said.
“The ultrasound waves oscillate tremendously quickly, activating microglial cells that digest and remove the amyloid plaques that destroy brain synapses.”
Alzheimer’s affects more than two-thirds of dementia patients, and approximately a quarter of a million Australians.
“With an ageing population placing an increasing burden on the health system, an important factor is cost, and other potential drug treatments using antibodies will be expensive,” Professor Götz said.
“In contrast, this method uses relatively inexpensive ultrasound and microbubble technology which is non-invasive and appears highly effective.
The approach is able to temporarily open the blood-brain barrier, activating mechanisms that clear toxic protein clumps and restoring memory functions.
“With our approach the blood-brain barrier’s opening is only temporary for a few hours, so it quickly restores its protective role,” Professor Götz said.
Research has been conducted using mice with an Alzheimer’s model, with the next step being to scale the research in higher animal models ahead of human clinical trials, which are at least two years away.
“This treatment restored memory function to the same level of normal healthy mice,” Professor Götz said.
“We’re also working on seeing whether this method clears toxic protein aggregates in neurodegenerative diseases other than Alzheimer’s and whether this also restores executive functions, including decision-making and motor control.”
Findings of the research, “Scanning ultrasound efficiently removes amyloid-β and restores memory in an Alzheimer's model”, are published in the journal Science Translational Medicine (11 March 2015, Vol. 7, #278 http://stm.sciencemag.org/)
12 March 2015.