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<TD vAlign=center width="100%" background=http://i1.bluelight.nu/p/10.gif bgColor=#e8e8f1>Amphetamines (including Ecstasy) can reverse the effects of Parkinsons 12-08-2005 22:14</TD>
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<TD>WASHINGTON - Amphetamines, including the party drug Ecstasy, have reversed the effects of Parkinson¡¯s disease in mice, researchers said Wednesday.
Their finding does not suggest the use of now-illegal drugs to treat the incurable brain disease, but may offer a way forward in helping patients, they said.
The team at Duke University in North Carolina treated mice that were genetically modified to suffer from Parkinson¡¯s-like symptoms with more than 60 types of amphetamines.
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Fourteen of the drugs helped reverse the symptoms of the mice, including the tremors and rigidity that mark the disease ¡ª raising the possibility of exploring related treatments for humans.
¡°We hope to find new drugs that are close chemically, but safe,¡± Marc Caron, who led the research, said in a telephone interview.
Parkinson¡¯s disease is caused by the death of brain cells that control physical movement and produce the essential chemical dopamine.
According to the American Parkinson¡¯s Disease Association, there are about 1.5 million Americans with the disease.
The new research shows that dopamine replacement, so far the most common, but only partly effective Parkinson¡¯s treatment, may not be the only viable option, Caron said.
Amphetamine-like drugs, not unlike those now given to children with attention deficit disorder, could eventually be used for Parkinson¡¯s, he said.
¡°We give these drugs in low doses to children, so it¡¯s not so terrible to say some day we should give similar drugs to Parkinson¡¯s patients,¡± Caron said.
The effects of another stimulant, coffee, have been cited in the past as easing Parkinson¡¯s symptoms by keeping dopamine levels high.
But Caron said coffee is only effective in early stages of the disease, when some dopamine is still present. His new study reflects treatment during advanced stages, when there is no longer any dopamine present.
MDMA, also known as Ecstasy, proved the most effective of the amphetamines used at counteracting Parkinson¡¯s symptoms in the mice, said Raul Gainetdinov, who also worked on the study. He said he is not sure exactly why.
¡°We do not advocate self-medication with Ecstasy,¡± Gainetdinov added in a telephone interview. He said that apart from being illegal and controversial, the drug can be more damaging to human nerve tissue than it is to mice.
Caron and Gainetdinov¡¯s findings were published in the August edition of Public Library of Science Biology.
Copyright 2005 Reuters Limited. All rights reserved. Republication or redistribution of Reuters content is expressly prohibited without the prior written consent of Reuters.</TD></TR></T></TABLE>
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