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Leuven research opens new pathway for the treatment of Alzheimer's disease
Date:12/4/2012

Scientists from VIB and KU Leuven have discovered a new target molecule for the development of a treatment against Alzheimer's disease. There is currently no cure for this disease. Many candidate drugs fail because they also target proteins essential to life. This discovery from Leuven could form a target for a treatment against Alzheimer's disease with fewer side effects and that suppresses the very first symptoms of the disease. This research will be published in the leading journal Nature Medicine.

Alzheimer's Disease

Alzheimer's Disease is the most common form of dementia in the West. The damage to memory and mental function causes one of the most terrifying clinical pictures. The current drugs for Alzheimer patients support memory for a short time, but they do not stop the death of brain cells. Recent insights have shown that Alzheimer's disease causes biochemical changes in the brain many years before the symptoms of dementia are present. It is very important to develop drugs that can be taken at this early stage in order to prevent the disease.

The ɣ-secretase complex

Many candidate drugs have an effect on the ɣ-secretase complex. This complex cuts proteins at specific sites and plays an important role in the development of amyloid plaques, a pathological hallmark in of the brains of Alzheimer patients. Aberrant and excessive cleavage of the amyloid precursor protein by the y-secretase complex results in the accumulation and deposition of the β-amyloid protein in amyloid plaques.

However, the ɣ-secretase complex is also involved in cleavage of a series of other proteins essential to life. As a result, many candidate drugs that act on the ɣ-secretase complex produce toxic side effects.

GPCRs and β-arrestin

GPCRs are a family of proteins that serve as the targets of the majority of all currently marketed drugs. The Nobel Prize in Chemistry for 201
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Contact: Evy Vierstraete
evy.vierstraete@vib.be
32-924-46611
VIB (the Flanders Institute for Biotechnology)
Source:Eurekalert

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