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雄激素与男性老年性痴呆 被引量:6

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摘要 随着世界老龄人口增加,老年性痴呆的发病率也将增高。男女两性痴呆发病率随年龄增长均急剧升高,尤其是75岁以上的老年人。老年性痴呆,即阿尔茨海默病(Alzheimer’s disease,AD),是一种慢性的大脑退行性变性疾病,表现为进行性远、近记忆力障碍,分析判断能力衰退,情绪改变,行为失常,甚至意识模糊。AD病理改变为脑普遍性萎缩,海马及相应皮质部位尤为明显。中枢神经区域神经元和神经突触明显减少或消失,伴有以额叶为主的弥散性老年斑和神经原纤维缠结,其老年斑内大量β淀粉样蛋白(AB)沉积。正电子发射断层显像(PET)显示,AD患者脑葡萄糖代谢缺陷主要集中在额叶、颞叶和海马结构。其早期主要表现在海马、海马旁回、前扣带回、颞叶下回的葡萄糖代谢下降。
出处 《中华老年医学杂志》 CAS CSCD 北大核心 2007年第1期73-75,共3页 Chinese Journal of Geriatrics
基金 解放军科研计划(01MA301)
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