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University of Cincinnati

Research links 'ecstasy' to survival of key movement-related cells in brain
CINCINNATI--New research from the University of Cincinnati (UC) suggests
that the widely abused club drug "ecstasy," or MDMA, can increase the
survival of dopamine cells in the brain during fetal development.
Because these cells are critical in the regulation of voluntary movement,
the findings, the researchers say, may lead to better therapies for
neurological diseases like Parkinson's.
Led by Jack Lipton, PhD, professor of psychiatry, the study was presented
today as an abstract at the Society for Neuroscience annual meeting in
Atlanta.
"We're certainly not suggesting that this drug be used to treat diseases,"
said Lipton. "But finding new methods to enhance the survival of dopamine
neurons is critical in developing new drugs for diseases such as
Parkinson's.
"While MDMA itself isn't likely to be an appropriate therapy for
neurodegenerative diseases, it may provide insights for developing new drugs
that have similar properties.
"It's exciting to learn that an abused drug may have potential use for
developing new therapeutics," he added. "It really makes you rethink your
own preconceptions."
Dopamine is a neurotransmitter that has been found to regulate movement,
balance, emotion and motivation, and it also affects pleasurable feelings in
the brain. Researchers know that a loss of dopamine cells in the brain leads
to the development of Parkinson's disease and possibly other movement
disorders. Preventing dopamine cells from dying or aiding in the replacement
of those cells is key to finding lasting therapies.
Lipton, director of the developmental neuroscience division in UC's
psychiatry department, studies the long-term effects of abused drugs on the
developing central nervous system. He noticed, during previous laboratory
studies in rats, that prenatal exposure to MDMA increased growth of dopamine
cells in the brain. His team then decided to study exposure to MDMA in
cultured embryonic cells--where they confirmed that this drug was in fact
increasing dopamine cell survival.
The findings, Lipton says, aren't consistent with what is known about adult
brains, where MDMA has been shown to cause depletion of
neurotransmitters--like dopamine--and has been linked to decreased brain
activity.
MDMA, chemically known as methylenedioxymethamphetamine and sold and used
illegally as "ecstasy," is a synthetic stimulant that prompts the secretion
of large amounts of the neurotransmitters serotonin, dopamine and
norepinephrine in the brain. This secretion can lead to prolonged periods of
activity, hallucinations and euphoria. Before the United States banned it in
1985, MDMA was tested as a possible adjunct in psychotherapy. In 2001, the
FDA agreed to allow MDMA to be tested as a possible treatment for
post-traumatic stress disorder.

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