据1997年11月28日出版的美国《科学》周刊报道，研究人员不久前发现，将致瘦蛋白（leptin）移人肥胖的致瘦蛋白缺失的鼠体中时，老鼠体重会迅速下降。然而，这种做法对于正常鼠类和其它胖老鼠却并不奏效。在美国波特兰的俄勒冈医科大学，研究人员Boston等人对“致瘦蛋白缺失就 According to a report in the November 28, 1997 issue of the U.S. Science, researchers recently found that mice lose weight quickly when they transfer leptin to obese leptin-deficient mice. However, this does not work for normal mice and other fat mice. At the Oregon Medical University in Portland, the United States, Boston and others on the "loss of leptin