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Gammaglobulin Treatment for Alzheimer's Disease to be Tested at Case Medical Center
IGIV is traditionally used to treat primary immunodeficiency disorders, but is not currently approved for treating AD, which is one of the leading causes of dementia in the elderly.
Initial research in experimental models and patients suggests that immunotherapy targeting beta amyloid (the protein that forms the core of plaques in the brain) may provide a more effective way to treat AD. Antibodies that bind to beta amyloid are present in IGIV, which is made from the blood of several thousand healthy adults.
One of the hallmarks of AD pathology is an abundance of beta-amyloid deposits in the brain. While it is not yet known if beta amyloid plaques cause AD or are a byproduct of the disease, scientists are interested in finding ways to reduce the toxic effects of beta amyloid on the brain. Antibodies against beta amyloid may do so by binding to toxic forms of beta amyloid, thereby neutralizing them and/or promoting their elimination.
"We are investigating whether IGIV, which contains naturally occurring human anti-amyloid antibodies, will defend the brain of AD patients against the damaging effects of beta amyloid. If it does, giving IGIV to patients with mild to moderate Alzheimer's may potentially slow the rate of progression of the disease," says Alan Lerner, M.D., principal investigator for the study in Cleveland and director of the Memory and Cognition Center.
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