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Artificial sweetener a potential treatment for Parkinson's disease
Date:6/17/2013

limb the walls of a test tube indicates their locomotive capability. In the initial experimental period, 72 percent of normal flies were able to climb up the test tube, compared to only 38 percent of the genetically-altered flies.

The researchers then added mannitol to the food of the genetically-altered flies for a period of 27 days and repeated the experiment. This time, 70 percent of the mutated flies could climb up the test tube. In addition, the researchers observed a 70 percent reduction in aggregates of α-synuclein in mutated flies that had been fed mannitol, compared to those that had not.

These findings were confirmed by a second study which measured the impact of mannitol on mice engineered to produce human α-synuclein, developed by Dr. Eliezer Masliah of the University of San Diego. After four months, the researchers found that the mice injected with mannitol also showed a dramatic reduction of α-synuclein in the brain.

Delivering therapeutic compounds to the brain

The researchers now plan to re-examine the structure of the mannitol compound and introduce modifications to optimize its effectiveness. Further experiments on animal models, including behavioral testing, whose disease development mimics more closely the development of Parkinson's in humans is needed, Prof. Segal says.

For the time being, mannitol may be used in combination with other medications that have been developed to treat Parkinson's but which have proven ineffective in breaking through the blood/brain barrier, says Prof. Segal. These medications may be able to "piggy-back" on mannitol's ability to open this barrier into the brain.

Although the results look promising, it is still not advisable for Parkinson's patients to begin ingesting mannitol in large quantities, Prof. Segal cautions. More testing must be done to determine dosages that would be both effective and safe.


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Contact: George Hunka
ghunka@aftau.org
212-742-9070
American Friends of Tel Aviv University
Source:Eurekalert

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