针灸疗法缓解疼痛的内在机理(有声)

Research on acupuncture¹ just got a shot in the arm. Well, a needle near the knee, actually. Because a study in the journal Nature Neuroscience  has uncovered a mechanism² that could explain how this traditional healing process can help reduce pain.

Acupuncture has long been tried against all sorts of ailments³, from aches and pains to infertility⁴. And though the Western world treats the procedure with some skepticism, it’s actually endorsed⁵ 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 preventing pain signals from reaching the brain.

This biochemical blockade reduced the animals’ discomfort⁶, as did treating them with drugs that boost the amount of adenosine in the tissue. The scientists say the pain relief stems from the body’s natural response to minor⁷ tissue injury. So acupuncture’s analgesic effect may have finally been pinned down
 

1 acupuncture   

n.针灸，针刺法，针疗法

参考例句：

• Written records show that acupuncture dates back to the Song Dynasty.文字记载表明，宋朝就已经有了针灸。
• It's known that acupuncture originated in China.众所周知，针灸起源于中国。

2 mechanism   

n.机械装置；机构，结构

参考例句：

• The bones and muscles are parts of the mechanism of the body.骨骼和肌肉是人体的组成部件。
• The mechanism of the machine is very complicated.这台机器的结构是非常复杂的。

3 ailments   

疾病（尤指慢性病），不适( ailment的名词复数 )

参考例句：

• His ailments include a mild heart attack and arthritis. 他患有轻度心脏病和关节炎。
• He hospitalizes patients for minor ailments. 他把只有小病的患者也送进医院。

4 infertility   

n.不肥沃，不毛；不育

参考例句：

• It is the Geneva, Switzerland-based Biotech Company's second recombinant infertility drug. 它是瑞士生物技术公司在日内瓦的公司生产的第二种重组治疗不孕症的药。 来自英汉非文学 - 生命科学 - 生物技术制药疫苗
• Endometritis is a cause of infertility. 子宫内膜炎是不育的原子。 来自辞典例句

5 endorsed   

vt.& vi.endorse的过去式或过去分词形式v.赞同( endorse的过去式和过去分词 )；在（尤指支票的）背面签字；在（文件的）背面写评论；在广告上说本人使用并赞同某产品

参考例句：

• The committee endorsed an initiative by the chairman to enter discussion about a possible merger. 委员会通过了主席提出的新方案，开始就可能进行的并购进行讨论。 来自《简明英汉词典》
• The government has broadly endorsed a research paper proposing new educational targets for 14-year-olds. 政府基本上支持建议对14 岁少年实行新教育目标的研究报告。 来自《简明英汉词典》

6 discomfort   

n.不舒服，不安，难过，困难，不方便

参考例句：

• One has to bear a little discomfort while travelling.旅行中总要忍受一点不便。
• She turned red with discomfort when the teacher spoke.老师讲话时她不好意思地红着脸。

7 minor   

adj.较小(少)的，较次要的；n.辅修学科；vi.辅修

参考例句：

• The young actor was given a minor part in the new play.年轻的男演员在这出新戏里被分派担任一个小角色。
• I gave him a minor share of my wealth.我把小部分财产给了他。