hi CHEWKI,

pls check this out

http://research.jax.org/grs/alzheimers.html        and

http://research.jax.org/grs/parkinsons.html         and

http://www.qps-austria.com/pages/animal-models/induced-disease-models.php

hope this is what you are looking for.  best wishes.

New mouse model reveals how Alzheimer's causes dementia 

Using a novel, newly developed mouse model that mimics the development of Alzheimer's disease in humans, Johns Hopkins researchers say they have been able to determine that a one-two punch of major biological "insults" must occur in the brain to cause the dementia that is the hallmark of the disease.