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U.S. researchers find potential target for treating diabetes, obesity

时间：2012-08-03 05:40:06

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 WASHINGTON, Aug. 2 (Xinhua) -- U.S. researchers at Washington University School of Medicine in St. Louis have identified a potential target for treating diabetes1 and obesity2, according to a study published online on Thursday in the journal Cell Metabolism3.

Studying mice, the researchers found that when the target protein was disabled, the animals became more sensitive to insulin and were less likely to get fat even when they ate a high-fat diet that caused their littermates to become obese4.
They studied how the body manufactures fat from dietary sources such as carbohydrates5. That process requires an enzyme6 called fatty acid synthase (FAS). Mice engineered so that they don't make FAS in their fat cells can eat a high-fat diet without becoming obese.
"Mice without FAS were significantly more resistant7 to obesity than their wild-type littermates," said first author Irfan Lodhi. "And it wasn't because they ate less. The mice ate just as much fatty food, but they metabolized more of the fat and released it as heat."
To understand why that happened, the researchers analyzed8 the mice's fat cells. Mice have two types of fat: white fat and brown fat. White fat stores excess calories and contributes to obesity. Brown fat helps burn calories and protects against obesity.
In mice genetically9 blocked from making fatty acid synthase in fat cells, the researchers noticed that the animals' white fat was transformed into tissue that resembled brown fat.

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1 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。
2 obesity Dv1ya     
n.肥胖，肥大
参考例句：
  • One effect of overeating may be obesity.吃得过多能导致肥胖。
  • Sugar and fat can more easily lead to obesity than some other foods.糖和脂肪比其他食物更容易导致肥胖。
3 metabolism 171zC     
n.新陈代谢
参考例句：
  • After years of dieting,Carol's metabolism was completely out of whack.经过数年的节食，卡罗尔的新陈代谢完全紊乱了。
  • All living matter undergoes a process of metabolism.生物都有新陈代谢。
4 obese uvIya     
adj.过度肥胖的，肥大的
参考例句：
  • The old man is really obese,it can't be healthy.那位老人确实过于肥胖了，不能算是健康。
  • Being obese and lazy is dangerous to health.又胖又懒危害健康。
5 carbohydrates 001f0186d1ea717492c413ca718f2635     
n.碳水化合物，糖类( carbohydrate的名词复数 )；淀粉质或糖类食物
参考例句：
  • The plant uses the carbohydrates to make cellulose. 植物用碳水化合物制造纤维素。 来自《简明英汉词典》
  • All carbohydrates originate from plants. 所有的碳水化合物均来自植物。 来自辞典例句
6 enzyme cPozF     
n.酵素，酶
参考例句：
  • Above a certain temperature,the enzyme molecule will become unfolded.超过一定温度，酶分子将会展开。
  • An enzyme that dissolves the fibrin of blood clots.能溶解血凝块中的纤维的酶。
7 resistant 7Wvxh     
adj.(to)抵抗的，有抵抗力的
参考例句：
  • Many pests are resistant to the insecticide.许多害虫对这种杀虫剂有抵抗力。
  • They imposed their government by force on the resistant population.他们以武力把自己的统治强加在持反抗态度的人民头上。
8 analyzed 483f1acae53789fbee273a644fdcda80     
v.分析( analyze的过去式和过去分词 )；分解；解释；对…进行心理分析
参考例句：
  • The doctors analyzed the blood sample for anemia. 医生们分析了贫血的血样。 来自《简明英汉词典》
  • The young man did not analyze the process of his captivation and enrapturement, for love to him was a mystery and could not be analyzed. 这年轻人没有分析自己蛊惑著迷的过程，因为对他来说，爱是个不可分析的迷。 来自《简明英汉词典》
9 genetically Lgixo     
adv.遗传上
参考例句：
  • All the bees in the colony are genetically related. 同一群体的蜜蜂都有亲缘关系。
  • Genetically modified foods have already arrived on American dinner tables. 经基因改造加工过的食物已端上了美国人的餐桌。 来自英汉非文学 - 生命科学 - 基因与食物

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