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Carmustine: a Powerful Candidate Drug for Treatment of Alzheimer's Disease

by Bidita Debnath on  March 27, 2013 at 6:32 PM Research News   - G J E 4
Long term treatment by carmustine, a chemical relative of mustard gas can decrease the amount of amyloid β which is already used to treat some types of brain cancer.
 Carmustine: a Powerful Candidate Drug for Treatment of Alzheimer's Disease
Carmustine: a Powerful Candidate Drug for Treatment of Alzheimer's Disease
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It also decreases the number of amyloid plaques in a mouse model of Alzheimer's disease. The research is published in Biomed Central's open access journal BMC Medicine.

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Alzheimer's disease progressively destroys memory, language, and judgement of affected people. While deaths due to heart disease, stroke and cancer may be decreasing, the number of deaths each year due to Alzheimer's disease is on the increase. Accumulation of amyloid β plaques can be seen in the brain from early stages, even though the exact relationship between these plaques and Alzheimer's disease has not yet been firmly established.

Noticing that people with cancer tended not to get Alzheimer's disease, and vice versa, researchers from the Florida based Torrey Pines Institute for Molecular Studies screened a library of all FDA approved anti-cancer drugs for their ability to reduce amyloid β levels in cells expressing amyloid precursor protein. From this screen they found that carmustine could decrease conversion of precursor protein to amyloid β levels by 60%.When tested in a mouse model of Alzhiemer's disease, long term treatment with carmustine was able to reduce amyloid β levels by 75%.

Discussing how this research could translate to humans Dr Madepalli Lakshmana, who led this study commented, "The level of carmustine needed to achieve reduction in amyloid β is much lower than the dose already used in the treatment of some types of brain cancer. Also carmustine does not appear to act by activating microglia or by blocking secretases which reduces possible side effects seen with other anti-amyloid investigational new drugs. While more work still needs to be done. Carmustine appears to be a powerful candidate drug for treatment and prevention of Alzheimer's disease."

Source: Eurekalert
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