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阿尔采本氏病（AD）是一种中枢神经系统原发性退行性变性的疾病，其主要临床相为痴呆综合症。多数流行病学资料显示，在65岁以上的人群中痴呆的患病率为4%～6%，且随年；龄的增加而增高，80岁以上人群痴呆的患病率可高达20％［11，因而其在老年医学中的地位和重要性日益引起人?
Alzheimer’s disease (AD) is a primary degenerative disease of the central nervous system whose main clinical phase is dementia syndrome. Most epidemiological data show that the prevalence of dementia in people over 65 years of age is 4% to 6%, and increased with age, the prevalence of dementia in people over 80 years old up to 20% [ 11, so its status and importance in gerontology is increasingly causing people?