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Plymouth, United Kingdom:
Long-term administration of oral THC and/or
natural cannabis extracts reduces MS-associated pain and improves mobility
compared to placebo, according to clinical trial data to be published in the
Journal of Neurology, Neurosurgery, and Psychiatry. [Full text of the study
"Cannabinoids in multiple sclerosis study: safety and efficacy data for 12
months follow up," will appear in the December 2005 issue of the Journal of
Neurology, Neurosurgery, and Psychiatry.]
The findings are based on the results of a 52-week follow-up trial of more than
500 multiple sclerosis patients. Results of the initial fifteen-week,
double-blind, placebo controlled trial, appeared in the British medical journal
The Lancet in 2003. [Oral Administration Of Cannabinoids Alleviates MS Symptoms,
Large Scale Study Says; NORML News; 2003-11-13]
Although investigators only found evidence of a "small treatment effect" in the
control of patients' spasticity, they noted that subjects achieved greater
symptomatic relief in other areas - including pain relief, sleep quality, and
mobility - the longer they used cannabinoids. These results "suggest [a] wider
symptomatic benefit with time," researchers concluded.
British researchers are expected to begin recruiting patients this spring to
participate in a three-year clinical trial to further investigate whether the
long-term use of cannabinoids alters the progression of MS.
Previous studies investigating the impact of cannabinoids on animal models of MS
[Pot Inhibits Neurodegeneration In Animal Model Of MS; NORML News; 2003-11-30],
Parkinson's disease [Cannabinoids Treat Pain, Protect Brain Cells And Delay
Neurodegenerative Disease Progression; NORML News; 2004-11-04], and Amyotrophic
Lateral Sclerosis [THC Delays Progression Of Lou Gehrig's Disease; NORML News;
2004-06-24] have found that the compounds inhibited the diseases' progression.
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