Abstract:
:Clinicopathological observations suggest there is considerable overlap between vascular dementia (VaD) and Alzheimer's disease (AD). We used immunochemical methods to compare quantities of amyloid-beta (Abeta) peptides in post mortem brain samples from VaD, AD subjects and nondemented ageing controls. Total Abeta peptides extracted from temporal and frontal cortices were quantified using a previously characterized sensitive homogenous time-resolved fluorescence (HTRF) assay. The HTRF assays and immunocapture mass spectrometric analyses revealed that the Abeta(42) species were by far the predominant form of extractable peptide compared with Abeta(40) peptide in VaD brains. The strong signal intensity for the peak representing Abeta(4-42) peptide confirmed that these N-terminally truncated species are relatively abundant. Absolute quantification by HTRF assay showed that the mean amount of total Abeta(42) recovered from VaD samples was approximately 50% of that in AD, and twice that in the age-matched controls. Linear correlation analysis further revealed an increased accumulation with age of both Abeta peptides in brains of VaD subjects and controls. Interestingly, VaD patients surviving beyond 80 years of age exhibited comparable Abeta(42) concentrations with those in AD in the temporal cortex. Our findings suggest that brain Abeta accumulates increasingly with age in VaD subjects more so than in elderly without cerebrovascular disease and support the notion that they acquire Alzheimer-like pathology in older age.
journal_name
Neuropathol Appl Neurobioljournal_title
Neuropathology and applied neurobiologyauthors
Lewis H,Beher D,Cookson N,Oakley A,Piggott M,Morris CM,Jaros E,Perry R,Ince P,Kenny RA,Ballard CG,Shearman MS,Kalaria RNdoi
10.1111/j.1365-2990.2006.00696.xsubject
Has Abstractpub_date
2006-04-01 00:00:00pages
103-18issue
2eissn
0305-1846issn
1365-2990pii
NAN696journal_volume
32pub_type
杂志文章abstract::Herpes simplex virus was injected into the vitreous of suckling and adult rabbits. In the suckling rabbits the infection caused an arrested myelination of the strip. Further, the infected strips showed degenerative changes with splitting and distension of myelin sheaths which then disintegrated. Ultrastructurally, her...
journal_title:Neuropathology and applied neurobiology
pub_type: 杂志文章
doi:10.1111/j.1365-2990.1978.tb00530.x
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abstract::The curiously consistent localization of cerebellar cortical damage in chronic alcoholism is re-evaluated in the light of selective damage, with a similar topography in the cerebellar vermal region, in superficial siderosis in man and in experimental animals exposed to certain toxic substances. Attention is drawn to t...
journal_title:Neuropathology and applied neurobiology
pub_type: 杂志文章,评审
doi:
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pub_type: 杂志文章
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journal_title:Neuropathology and applied neurobiology
pub_type: 杂志文章
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journal_title:Neuropathology and applied neurobiology
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