Gene causes Alzheimer’s brain ‘garbage’

A brain mechanism that acts like a recycling plant for toxic proteins goes haywire in people with a gene mutation linked with Alzheimer's disease, U.S. researchers said on Thursday, unveiling a discovery offering a new lead for drug companies.They said the gene presenilin 1, which is linked to the early development of Alzheimer's, plays a role in digesting toxic proteins...................& more.