Can we beat Alzheimer''s?
March 21st 2011 18:07
London, Mar 21 (PTI) British scientists claim to have overcome a key problem in treating dementia and motor neurone disease, by discovering a novel way to get medicines into the brain to treat the common memory disorders.
A team at Oxford University says the breakthrough may pave the way for a new generation of treatments for conditions such as Alzheimer''s, Parkinson''s, motor neurone disease and muscular dystrophy, ''Nature Biotechnology'' journal reported.
Until now, it has been very difficult to get drugs into the brain because of an efficient filter known as blood- brain barrier. One of the only ways has been to inject drugs directly into the brain.
But, now the British scientists have discovered how to hide medicines from this filter by attaching them to tiny molecules, released by cells, called exosomes. They can send drugs into brain to switch off a gene linked to Alzheimer''s.
However they believe it may be a few more years before the technique is safe enough to test on humans.
Dr Matthew Wood, who led the study, was quoted by the ''Daily Express'' as saying, "These are dramatic and exciting results. It''s the first time new biological medicines have been delivered effectively across the blood-brain barrier to the brain."
Exosomes are small capsules that are produced by most cells in the body. They can break away from the cell and travel around the body, taking genetic material with them.
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