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SSS 2008-09-23

时间:2010-05-15 01:25来源:互联网 提供网友:木渐浅。   字体: [ ]
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This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute.

 

Sometimes a bit of bacteria can be just what the doctor ordered. If you prize yogurt for its “active cultures,” you know what I’m talking about. Now a new study, published in the September 21st online issue of Nature, suggests that good bugs1 might even hold diabetes2 at bay. Type I diabetes is caused by an immune system malfunction3. Basically, the immune cells that usually chase after bacteria instead attack the pancreas, wiping out the cells that produce insulin. So researchers decided4 to see what would happen if they reigned5 in the immune response in mice that are prone6 to diabetes.

As expected, they found that the animals were less likely to develop the disease. But the effect depended entirely7 on the critters having a normal complement8 of friendly bacteria in their intestine9. Mice that were raised in a totally sterile10, germ-free environment were rampant11 diabetics. But simply treating those mice with a cocktail12 of bugs found in most mammals’ bellies13 cured the disease. How bacteria in the intestine can stave off diabetes is not yet clear. But the finding could lead to some interesting new treatments. In the meantime, remember that we can't live without the stuff that lives in us.

 

Thanks for the minute for Scientific American's 60-Second Science. I'm Karen Hopkin.

 


点击收听单词发音收听单词发音  

1 bugs e3255bae220613022d67e26d2e4fa689     
adj.疯狂的,发疯的n.窃听器( bug的名词复数 );病菌;虫子;[计算机](制作软件程序所产生的意料不到的)错误
参考例句:
  • All programs have bugs and need endless refinement. 所有的程序都有漏洞,都需要不断改进。 来自《简明英汉词典》
  • The sacks of rice were swarming with bugs. 一袋袋的米里长满了虫子。 来自《简明英汉词典》
2 diabetes uPnzu     
n.糖尿病
参考例句:
  • In case of diabetes, physicians advise against the use of sugar.对于糖尿病患者,医生告诫他们不要吃糖。
  • Diabetes is caused by a fault in the insulin production of the body.糖尿病是由体內胰岛素分泌失调引起的。
3 malfunction 1ASxT     
vi.发生功能故障,发生故障,显示机能失常
参考例句:
  • There must have been a computer malfunction.一定是出了电脑故障。
  • Results have been delayed owing to a malfunction in the computer.由于电脑发生故障,计算结果推迟了。
4 decided lvqzZd     
adj.决定了的,坚决的;明显的,明确的
参考例句:
  • This gave them a decided advantage over their opponents.这使他们比对手具有明显的优势。
  • There is a decided difference between British and Chinese way of greeting.英国人和中国人打招呼的方式有很明显的区别。
5 reigned d99f19ecce82a94e1b24a320d3629de5     
vi.当政,统治(reign的过去式形式)
参考例句:
  • Silence reigned in the hall. 全场肃静。 来自《现代汉英综合大词典》
  • Night was deep and dead silence reigned everywhere. 夜深人静,一片死寂。 来自《现代汉英综合大词典》
6 prone 50bzu     
adj.(to)易于…的,很可能…的;俯卧的
参考例句:
  • Some people are prone to jump to hasty conclusions.有些人往往作出轻率的结论。
  • He is prone to lose his temper when people disagree with him.人家一不同意他的意见,他就发脾气。
7 entirely entirely     
ad.全部地,完整地;完全地,彻底地
参考例句:
  • The fire was entirely caused by their neglect of duty. 那场火灾完全是由于他们失职而引起的。
  • His life was entirely given up to the educational work. 他的一生统统献给了教育工作。
8 complement ZbTyZ     
n.补足物,船上的定员;补语;vt.补充,补足
参考例句:
  • The two suggestions complement each other.这两条建议相互补充。
  • They oppose each other also complement each other.它们相辅相成。
9 intestine rbpzY     
adj.内部的;国内的;n.肠
参考例句:
  • This vitamin is absorbed through the walls of the small intestine.这种维生素通过小肠壁被吸收。
  • The service productivity is the function,including external efficiency,intestine efficiency and capacity efficiency.服务业的生产率是一个包含有外部效率、内部效率和能力效率的函数。
10 sterile orNyQ     
adj.不毛的,不孕的,无菌的,枯燥的,贫瘠的
参考例句:
  • This top fits over the bottle and keeps the teat sterile.这个盖子严实地盖在奶瓶上,保持奶嘴无菌。
  • The farmers turned the sterile land into high fields.农民们把不毛之地变成了高产田。
11 rampant LAuzm     
adj.(植物)蔓生的;狂暴的,无约束的
参考例句:
  • Sickness was rampant in the area.该地区疾病蔓延。
  • You cannot allow children to rampant through the museum.你不能任由小孩子在博物馆里乱跑。
12 cocktail Jw8zNt     
n.鸡尾酒;餐前开胃小吃;混合物
参考例句:
  • We invited some foreign friends for a cocktail party.我们邀请了一些外国朋友参加鸡尾酒会。
  • At a cocktail party in Hollywood,I was introduced to Charlie Chaplin.在好莱坞的一次鸡尾酒会上,人家把我介绍给查理·卓别林。
13 bellies 573b19215ed083b0e01ff1a54e4199b2     
n.肚子( belly的名词复数 );腹部;(物体的)圆形或凸起部份;腹部…形的
参考例句:
  • They crawled along on their bellies. 他们匍匐前进。
  • starving children with huge distended bellies 鼓着浮肿肚子的挨饿儿童
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