1·The virus also increases lipid sensitivity and decreases leptin secretion of the new fat cells.
该病毒还会增加新脂肪细胞的脂肪灵敏度，并降低其瘦素分泌。
2·The hypothalamus is the primary brain region that responds to leptin, sending a signal that curbs appetite.
下丘脑是对瘦素起反应的最主要的大脑区域，通过传递信号来抑制食欲。
3·Because humans also produce leptin, researchers hoped giving the hormone to obese people would result in weight loss.
因为人类同样制造瘦素，研究者希望这一激素能减少肥胖人群的体重。
4·Because of the mutation, the mice could not make functional leptin.
由于这一突变，老鼠不能生产功能性瘦素。
5·The scientists then traced the leptin decline to a pathway that originates in the brain's hypothalamus.
随后，科学家跟踪瘦素下降原因，找到通路的源头——大脑下丘脑部。