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Blocking overactive receptor in Alzheimer's recovers memory loss and more
Date:6/17/2013

This news release is available in French.

A new study shows that memory pathology in older mice with Alzheimer's disease can be reversed with treatment. The study by researchers from the Montreal Neurological Institute and Hospital - The Neuro, at McGill University and at Universit de Montral found that blocking the activity of a specific receptor in the brain of mice with advanced Alzheimer's disease (AD) recovers memory and cerebrovascular function. The results, published in the Journal of Neuroinflammation in May, also suggest an underlying mechanism of AD as a potential target for new therapies.

"The exciting and important aspect of this study is that even animals with advanced pathology can be rescued with this molecule" says Dr. Edith Hamel, neuroscientist at The Neuro and lead investigator on the paper in collaboration with Dr Rjean Couture at the Department of Physiology at Universit de Montral. "We have rarely seen this type of reversal of AD symptoms before in our mouse model at this advanced age when mice have been developing AD for one year."

The researchers found an increased level of a receptor known as bradykinin B1 receptor (B1R) in the brain of mice with AD, a receptor involved in inflammation. "By administering a molecule that selectively blocks the action of this receptor, we observed important improvements in both cognitive and cerebrovascular function," says Dr. Baptiste Lacoste, research fellow who conducted the study at The Neuro and now pursuing his training at Harvard Medical School in Boston. "Alzheimer's disease destroys nerve cells and also compromises the function of blood vessels in the brain. Not only were there improvements in learning and memory, but also marked recovery in blood flow and vascular reactivity, i.e. the abi
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Contact: Anita Kar
514-398-3376
McGill University
Source:Eurekalert

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