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28 August 2009

Scan shows how acupuncture works

Traditional Chinese acupuncture, increasingly popular in the West for a variety of ills, eases pain by regulating key receptors in the brain, according to a new study.

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Traditional Chinese acupuncture, increasingly popular in the West for a variety of ills, eases pain by regulating key receptors in the brain, according to a new study.

The study showed that acupuncture increases the binding availability of mu-opioid receptors in regions of the brain that process and weaken pain signals -- specifically the cingulate, insula, caudate, thalamus and amygdala. By directly stimulating these chemicals, acupuncture can affect the brain's long-term ability to regulate pain, the study found. A report on the findings appears in NeuroImage.

Using positron emission tomography scans of the brain, the researchers examined 20 women with fibromyalgia, a chronic pain condition. The women took no new medications for their pain during the study period.

"The increased binding availability of these receptors was associated with reductions in pain," Richard Harris, a researcher at the University of Michigan's Chronic Pain and Fatigue Research Centre and a research assistant professor of anaesthesiology at the University of Michigan Medical School, said in a news release from the university.

What the findings mean
What's more, Harris said, the findings could prompt doctors to use morphine and other opioid drugs with greater pain-killing effectiveness after treatment with acupuncture because those drugs bind to the same receptors.

Acupuncture has been used in China for more than 2 000 years. Practitioners insert sharp, thin needles into the body at specific points. Today, people worldwide turn to acupuncture for relief from pain, allergies, respiratory ailments, gastrointestinal disorders and gynaecological problems.

Chinese healers claim that acupuncture and traditional remedies work by altering the flow of the body's energy. Practitioners of Western medicine, which follows a more scientific approach, have been investigating exactly how acupuncture works -- or may not work -- for a number of years. – (HealthDay News, August 2009)

Read more:
Acupuncture soothes heartburn

 
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