Melatonin (MT) level decreases with aging may be one of the reasons of the increased oxidative stress in aging people.So the neuroprotective effect of MT becomes more attractive in recent years.

• 随着年龄的增加，褪黑素水平明显的降低可能是年老人体内氧化应激增加的原因之一，因此褪黑素的神经保护作用日益引起关注。