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【科学60秒】针灸真面目
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Research on acupuncture just ___1___. Well, a needle near the knee, actually. Because a study in the journal Nature Neuroscience has uncovered a mechanism that could explain how this traditional healing process can help reduce pain.
Acupuncture has long been tried against all sorts of ailments, from aches and pains to infertility. And though the Western world treats the procedure with some skepticism, it’s actually ___2___ by the World Health Organization for a couple dozen different conditions. But how can sticking needles in your skin be good for you?
Scientists tried the technique on mice that had a pain in the paw, inserting and rotating the needles in the mouse version of one of the most effective acupoints in Chinese medicine. And they found that the tissues around the treated acupoint get flooded with adenosine, a chemical that provides relief by ___3___.
This biochemical blockade reduced the animals’ discomfort, as did treating them with drugs that ___4___ the amount of adenosine in the tissue. The scientists say the pain relief stems from the body’s natural response to minor tissue injury. So acupuncture’s analgesic effect may have finally been ___5___.
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