Abstract:
:Alzheimer's disease (AD) is characterized by extracellular beta-amyloid plaques and intracellular tau tangles. AD-related pathology is often accompanied by vascular changes. The predominant vascular lesions in AD are cerebral amyloid angiopathy (CAA) and arteriosclerosis. Platelets circulate along the vessel wall responding immediately to vascular injury. The aim of the present study was to explore the presence and migration of platelets (thrombocytes) to sites of small vascular bleedings and/or to beta-amyloid plaques in the brain. We infused fluorescently labeled red PKH26 mouse platelets into transgenic Alzheimer mice overexpressing APP with Swedish/Dutch/Iowa mutations (APP_SDI) and explored if platelets migrate into the brain. Further we studied whether platelets accumulate in the vicinity of β-amyloid plaques. Our animal data shows that infused platelets are found in the liver and partly in the lung, while in the brain platelets were visible to a minor degree. In mice, we did not observe a significant association of platelets with beta-amyloid plaques or vessels. In the brain of Alzheimer postmortem patients platelets could be detected by immunohistochemistry for CD41 and CD62P, but the majority was found in vessels with or without beta-amyloid load, and only a few single platelets migrated deeper into the brain. Our findings suggest that platelets do not migrate into the brains of Alzheimer disease but are concentrated in brain vessels.
journal_name
Curr Neurovasc Resjournal_title
Current neurovascular researchauthors
Kniewallner KM,Ehrlich D,Kiefer A,Marksteiner J,Humpel Cdoi
10.2174/1567202612666150102124703subject
Has Abstractpub_date
2015-01-01 00:00:00pages
4-14issue
1eissn
1567-2026issn
1875-5739pii
CNR-EPUB-64310journal_volume
12pub_type
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journal_title:Current neurovascular research
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journal_title:Current neurovascular research
pub_type: 杂志文章,评审
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journal_title:Current neurovascular research
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journal_title:Current neurovascular research
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journal_title:Current neurovascular research
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journal_title:Current neurovascular research
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journal_title:Current neurovascular research
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journal_title:Current neurovascular research
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journal_title:Current neurovascular research
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更新日期:2014-01-01 00:00:00
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journal_title:Current neurovascular research
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journal_title:Current neurovascular research
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journal_title:Current neurovascular research
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更新日期:2020-10-29 00:00:00
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更新日期:2011-02-01 00:00:00
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journal_title:Current neurovascular research
pub_type: 杂志文章,评审
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更新日期:2011-11-01 00:00:00
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journal_title:Current neurovascular research
pub_type: 杂志文章,评审
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更新日期:2004-12-01 00:00:00
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更新日期:2007-02-01 00:00:00
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更新日期:2005-12-01 00:00:00
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journal_title:Current neurovascular research
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