The older rabbit as an animal model: implications for Alzheimer's disease.

Abstract:

:Eyeblink classical conditioning (EBCC) is impared in rabbits and humans during normal aging and severely disrupted in Alzheimer's disease (AD) and older Down's Syndrome patients (called DS/AD). To determine if older rabbit brains developed neuropathological evidence of Alzheimer-like pathology to account for impaired EBCC, the cerebellum and hippocampus of behaviorally tested rabbits aged 3 months to 7 years were probed using immunohistochemical techniques. Significant cell loss and gliosis were observed in some brain regions, but there was little or no deposition of beta-amyloid (A beta) or abnormal tau accumulations in telencephalic neurons, even in rabbits over 7 years of age. Our aims here are to: 1) report the results of our search for Alzheimer-like neuropathology in aged rabbit brains; and 2) highlight similarities in the brain mechanisms for EBCC between rabbits and humans and, hence, the utility of studies of EBCC in rabbits as a model system for testing cognition-enhancing drugs.

journal_name

Neurobiol Aging

journal_title

Neurobiology of aging

authors

Woodruff-Pak DS,Trojanowski JQ

doi

10.1016/0197-4580(95)02064-0

subject

Has Abstract

pub_date

1996-03-01 00:00:00

pages

283-90

issue

2

eissn

0197-4580

issn

1558-1497

pii

0197458095020640

journal_volume

17

pub_type

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