Mukaetova-Ladinska, EB, Abdel-All, Z, Mugica, ES et al. (5 more authors) (2015) Tau Proteins in the Temporal and Frontal Cortices in Patients With Vascular Dementia. Journal of Neuropathology & Experimental Neurology, 74 (2). pp. 148-157. ISSN 0022-3069
Abstract
We previously reported that, in the brains of older patients with vascular dementia (VaD), there is a distinctive accumulation of detergent-extractable soluble amyloid-β, with a predominance of Aβ42 species. It is unclear, however, if tau proteins also accumulate in the brains of older VaD subjects. Using antibody-specific immunoassays, we assessed concentrations of total tau (t-tau) and phosphorylated tau protein, measured at 3 phosphorylated sites (i.e. Thr181, Ser202/Thr205, and Ser262), as well as synaptophysin in the temporal and frontal cortices of 18 VaD, 16 Alzheimer disease (AD), and 16 normal age-matched control subjects. There was selective loss of t-tau protein in VaD compared with controls and AD subjects (p < 0.021 and p < 0.001, respectively). In contrast, phosphorylated tau levels were similar to controls in VaD in both regions, but they were increased in the temporal lobes of patients with AD (p < 0.01 and p < 0.0001 for Ser202/Thr205 and Ser262 phosphorylated sites, respectively). The reduced t-tau in the VaD group was unrelated to any low-level neurofibrillary or amyloid pathology or age at death. These findings suggest that breaches of microvascular or microstructural tissue integrity subsequent to ischemic injury in older age may modify tau protein metabolism or phosphorylation and have effects on the burden of neurofibrillary pathology characteristic of AD.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Keywords: | Aging; Alzheimer disease; Ischemia; Microvascular; Stroke; Tau; Vascular dementia |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Medicine and Health (Leeds) > School of Medicine (Leeds) > Leeds Institute of Cardiovascular and Metabolic Medicine (LICAMM) |
Depositing User: | Symplectic Publications |
Date Deposited: | 18 Jul 2018 14:51 |
Last Modified: | 18 Jul 2018 14:51 |
Status: | Published |
Publisher: | Oxford University Press |
Identification Number: | 10.1097/NEN.0000000000000157 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:131122 |