A little searching online brings up interesting stuff on that topic, such as the following
review and commentary at ScienceDaily [dot] com, posted in 2008:
"In a special issue of the Journal of Alzheimer's Disease published May 2008, guest editors Judith Miklossy, from The University of British Columbia, and Ralph N. Martins, from Edith Cowan University and Hollywood Private Hospital, Perth, Western Australia, and a group of experts explore this exciting topic.