A new nanotherapy reversed Alzheimer’s symptoms in mice by repairing the blood-brain barrier and restoring its ability to clear toxic proteins. The bioactive nanoparticles acted as both treatment and catalyst, resetting the brain’s self-cleaning system. Credit: Shutterstock A team co-led by the Institute for Bioengineering of Catalonia (IBEC) and West China Hospital Sichuan University (WCHSU), in collaboration with partners in the UK, reports a nanotechnology approach that reverses Alzheimer's