needle_2212555bA weekly injection which could prevent Alzheimer’s disease may be possible after scientists discovered how to get drugs into brain. Treating neurological disorders like dementia has always proved difficult because the brain has a network of blood vessels – known as the blood-brain barrier – which stop all but vital nutrients getting inside. However for the first time, scientists have discovered how to attach antibodies to a special protein called ‘transferrin’, which exists in the body to help transport materials through the blood-brain barrier. More