Cerebral microinfarcts associated with severe cerebral beta-amyloid angiopathy.

Cerebral microinfarcts associated with severe cerebral beta-amyloid angiopathy.
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DOI:
10.1111/j.1750-3639.2009.00322.x
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发表时间:
2010-03
期刊:
Brain pathology (Zurich, Switzerland)
影响因子:
--
通讯作者:
Vinters HV
Vinters HV
中科院分区:
其他
文献类型:
--
作者:
Soontornniyomkij V;Lynch MD;Mermash S;Pomakian J;Badkoobehi H;Clare R;Vinters HV

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脑淀粉样血管病(CAA)在老年人中很常见,特别是那些患有阿尔茨海默病的人。为了研究痴呆患者大脑中重度CAA(SCAA)的存在是否与较轻度CAA(MCAA)患者更高的陈旧性微梗死负担相关,将18例SCAA患者的大脑与21例MCAA患者的大脑进行了比较。采用CD 68免疫组织化学法突出显示来自不同脑区的组织块中的陈旧性微梗死。18例SCAA脑中有14例存在陈旧性微梗死,21例MCAA脑中有7例存在陈旧性微梗死(P = 0.01,双尾Fisher精确检验)。SCAA组中每个脑中不同地理区域的陈旧性微梗死平均数量范围为0 - 1.95(平均秩24.94,秩和449),MCAA组中为0 - 0.35(平均秩15.76,秩和331)(P = 0.008,双尾Mann-Whitney U检验)。在患有严重CAA的痴呆患者中,频繁的陈旧性微梗死可能是导致这些患者认知障碍的血管成分。
Cerebral amyloid angiopathy (CAA) is common in elderly individuals, especially those affected with Alzheimer's disease. To investigate whether the presence of severe CAA (SCAA) in the brains of demented patients was associated with a higher burden of old microinfarcts than those with mild CAA (MCAA), 18 brains with SCAA were compared to 21 brains with MCAA. Immunohistochemistry for CD68 was employed to highlight old microinfarcts in tissue blocks from various brain regions. Old microinfarcts, manually counted by light microscopy, were present in 14 of 18 SCAA brains, and in 7 of 21 MCAA brains (P = 0.01, 2-tailed Fisher’s exact test). The average number of old microinfarcts across geographic regions in each brain ranged from 0 to 1.95 (mean rank 24.94, sum of ranks 449) in the SCAA group, and from 0 to 0.35 (mean rank 15.76, sum of ranks 331) in the MCAA group (P = 0.008, 2-tailed Mann-Whitney U test). Frequent old microinfarcts in demented individuals with severe CAA may contribute a vascular component to the cognitive impairment in these patients.
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