瘦素 ,是瘦素基因的产物 ,是由脂肪细胞分泌的一种激素。瘦素通过作用于下丘脑影响Gn RH的脉冲释放而影响青春期的发育。它可能是独立于性激素之外的青春发育的主要启动因子之一。瘦素浓度的变化在男性青春发育各期具有一定的规律性 ,它的峰值出现时间可能是青春期开始的标志。 Leptin, a product of the leptin gene, is a hormone secreted by fat cells. Leptin affects the development of puberty by acting on the hypothalamus to influence the pulse release of Gn RH. It may be one of the major initiators of puberty independent of sex hormones. Changes in leptin concentration in the male youth has a certain regularity of development, its peak appearance time may be the beginning of puberty.