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分子病理学研究发现老年人脑白质病变源于慢性低灌注损伤

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Author:
No author available
Journal Title:
NATIONAL MEDICAL JOURNAL OF CHINA
Issue:
39
DOI:
10.3760/j:issn:0376-2491.2006.39.020
Key Word:
No keyword available

Abstract: @@ 脑白质病变(white matter lesions, WML)包括脑室旁病变和深部皮质下病变,常见于老年脑组织,随着年龄而增加并且与认知障碍密切相关. WML在颅脑CT表现为低密度,在MRI的T2加权相和质子相表现为高密度.组织学研究发现宾斯旺格病(Binswanger disease)和阿尔茨海默病(Alzheimer disease, AD)患者脑白质有着诸如髓鞘变薄、轴索脱失、少突胶质细胞丢失、星形胶质细胞增生动脉硬化等改变,推断为可能与脑缺血相关,然而不能排除可溶性β淀粉样蛋白的毒性作用引起神经损害.

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