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J Neurovirol. 2008 Jan;14(1):1-4. doi: 10.1080/13550280701802543.

Herpes simplex virus type 1 and Alzheimer's disease: the autophagy connection.

Author information

  • 1Faculty of Life Sciences, The University of Manchester, Manchester, UK. ruth.itzhaki@manchester.ac.uk

Abstract

The causes of Alzheimer's disease (AD) and of the characteristic pathological features - amyloid plaques and neurofibrillary tangles - of AD brain are unknown, despite the enormous resources provided over the years for their investigation. Indeed, the only generally accepted risk factors are age, Down syndrome, carriage of the type 4 allele of the apolipoprotein E gene (APOE-epsilon 4), and possibly brain injury. Following the authors' previous studies implicating herpes simplex virus type 1 (HSV1) in brain of APOE-epsilon 4 carriers as a major cause of AD, the authors propose here, on the basis of their and others' recent studies, that not only does HSV1 generate the main components of amyloid plaques and neurofibrillary tangles (NFTs) - beta-amyloid (A beta) and abnormally phosphorylated tau but also, by disrupting autophagy, it prevents degradation of these aberrant proteins, leading to their accumulation and deposition, and eventually to AD.

PMID:
18300070
DOI:
10.1080/13550280701802543
[PubMed - indexed for MEDLINE]
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