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Beta-amyloid aggregation in human brains with cerebrovascular lesions.
Kuopio University, Finland.
2006 (engelsk)Inngår i: Stroke, ISSN 0039-2499, E-ISSN 1524-4628, Vol. 37, nr 12, s. 2940-5Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

BACKGROUND AND PURPOSE: The present study assessed beta-amyloid (Abeta) protein aggregates in postmortem human brains in subjects who had experienced stroke to examine the proposed association between ischemic stress and the accumulation of Abeta reported in rodents.

METHODS: A sample of 484 postmortem brains from nondemented subjects, lacking isocortical neurodegenerative pathology with verified cerebrovascular lesions, and 57 age-matched controls were assessed with respect to Abeta, Abeta40, and Abeta42 aggregates in the cortex and thalamus by immunohistochemical techniques.

RESULTS: The load of Abeta aggregates did not display a significant association with cerebrovascular lesions. The load of Abeta, Abeta40, and Abeta42 aggregates increased with age, and there was a tendency toward higher odds ratios for Abeta aggregates, though not statistically significant, in subjects with acute cerebrovascular lesions. In the oldest subjects with cerebrovascular lesions and with both thalamic and cortical Abeta aggregates, the load of thalamic Abeta42 was significantly higher than the load of Abeta40.

CONCLUSIONS: Our findings indicate that cerebrovascular disease does not influence the load of Abeta, whereas a shift of aggregation from the Abeta40 to the Abeta42 residue is noted in the thalamus but only in aged subjects. It is impossible, however, to state whether this result is attributable to increased Abeta production, its insufficient elimination, or other susceptibility factors.

sted, utgiver, år, opplag, sider
2006. Vol. 37, nr 12, s. 2940-5
HSV kategori
Forskningsprogram
Patologi
Identifikatorer
URN: urn:nbn:se:uu:diva-171371DOI: 10.1161/01.STR.0000248777.44128.93PubMedID: 17095738OAI: oai:DiVA.org:uu-171371DiVA, id: diva2:510650
Tilgjengelig fra: 2012-03-17 Laget: 2012-03-17 Sist oppdatert: 2017-12-07

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