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News (Media Awareness Project) - UK: Marijuana Compounds Ease Tremors In Mice With MS-Like
Title:UK: Marijuana Compounds Ease Tremors In Mice With MS-Like
Published On:2000-03-02
Source:Augusta Chronicle, The (GA)
Fetched On:2008-09-05 01:41:37
MARIJUANA COMPOUNDS EASE TREMORS IN MICE WITH MS-LIKE DISEASE

Marijuana-like compounds ease tremors in mice with a condition similar
to multiple sclerosis, researchers say in a study that appears to
corroborate patients who say pot helps them deal with the disease.

The relief apparently wasn't because the mice were stoned, but because
the compounds hit the right buttons in the nervous system, the British
researchers reported in Thursday's issue of the journal Nature.

The compounds tested were synthetic but included the chemical
equivalent of THC, the main ingredient in marijuana. Five of the six
compounds tested reduced tremors and spasticity.

"This lends credence to the anecdotal reports that some people with MS
have said that cannabis can help control these distressing symptoms,"
said Lorna Layward, one of the study's authors. Layward heads the
research arm of the Multiple Sclerosis Society of Great Britain and
Northern Ireland.

Stephen Reingold, vice president of research at the National Multiple
Sclerosis Society, said it would be wrong to assume the results would
hold true for humans. He said further research should be conducted.

"What this doesn't tell us is that smoking marijuana is good for MS,"
Reingold said.

More than 300,000 Americans have MS, in which the body attacks myelin,
the sheath that insulates nerve fibers. That can produce stiffness,
tremors, paralysis, loss of vision, numbness and pain. The cause is
unknown, and there is no cure.

In the new work, the compounds injected into the mice stimulated
structures called cannabinoid receptors on the surface of nerve cells.
The work indicates the receptors are involved in the regulation of
muscle tone, said David Baker of University College in London, who led
the study.

The symptoms were not eased merely by the sedative effect of
cannabinoids, since some of the compounds don't bind with the receptor
known to be responsible for marijuana's high. Other signs of sedation,
such as a drop in body temperature, also were not found, Baker said.

Baker said the work could lead to compounds that can treat MS symptoms
without the high of marijuana, which can affect memory.

"We've tapped into and exposed this natural system," he said. "And
that's why this is important."

The role of marijuana in treating illness has been the subject of
debate, with some states passing laws allowing its use for medicinal
purposes. Some patients with AIDS, glaucoma and cancer say marijuana
can ease pain, nausea and other symptoms.

Layward said other researchers in Britain are planning to test
marijuana derivatives on MS patients.

Dr. Robert Lisak, co-director of the Multiple Sclerosis Center at the
Detroit Medical Center, said the mouse disease is not exactly
analogous to multiple sclerosis in humans, but the work is
encouraging.
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