Alzheimer s disease(AD)is a progressive neurodegenerative disease.AD is characterized by recent memory impairment.Its pathological characteristics are senile plaque and neurofibrillary tangles(NFT).

• 阿尔茨海默病(AD)是以近期记忆障碍为主要临床症状,以老年斑及神经纤维缠结为主要病理改变的进行性神经变性疾病。