Herpes Simplex Virus Type 1 in the Brain, Apolipoprotein E Genotype and Alzheimer’s Disease

The ε4 allele of apolipoprotein E (apoE) is an important risk factor for Alzheimer's disease (AD), however, it is not required nor sufficient to cause the disease on its own. Herpes viruses cause acute and chronic diseases of the central nervous system and have been implicated in AD. Using a se...

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Main Authors: Uwe Beffert, Philippe Bertrand, Danielle Champagne, Serge Gauthier, Judes Poirier
Format: Article
Language:English
Published: McGill University 2020-12-01
Series:McGill Journal of Medicine
Subjects:
Online Access:https://mjm.mcgill.ca/article/view/656
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author Uwe Beffert
Philippe Bertrand
Danielle Champagne
Serge Gauthier
Judes Poirier
author_facet Uwe Beffert
Philippe Bertrand
Danielle Champagne
Serge Gauthier
Judes Poirier
author_sort Uwe Beffert
collection DOAJ
description The ε4 allele of apolipoprotein E (apoE) is an important risk factor for Alzheimer's disease (AD), however, it is not required nor sufficient to cause the disease on its own. Herpes viruses cause acute and chronic diseases of the central nervous system and have been implicated in AD. Using a sensitive polymerase chain reaction method, latent herpes simplex virus type 1 (HSV-1) has been detected from five different brain regions (hippocampus, frontal cortex, occipital cortex, cerebellum and striatum) of neuropathologically confirmed AD and control tissue. HSV-1 positivity was then correlated with AD, presence of the virus in specific brain regions, and apoE genotype. The results confirm that the ε4 allele of apoE is a risk factor for AD, while HSV-1 alone is not. This held true for all five brain regions examined. Furthermore, no synergy between the two factors could be found when any one of the brain regions was examined individually or when the data were pooled. These findings emphasize that the ε4 allele of apoE is a risk factor for AD and that HSV-1, either alone or in combination with apoE, does not represent an increased risk for AD. Furthermore, no particular brain region seems to be more infected with HSV-1 than another, even in those regions most affected in AD.
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spelling doaj.art-7d9409ae75d5434a9c8b72e2434594af2022-12-21T22:32:35ZengMcGill UniversityMcGill Journal of Medicine1715-81252020-12-014110.26443/mjm.v4i1.656871Herpes Simplex Virus Type 1 in the Brain, Apolipoprotein E Genotype and Alzheimer’s DiseaseUwe BeffertPhilippe BertrandDanielle ChampagneSerge GauthierJudes PoirierThe ε4 allele of apolipoprotein E (apoE) is an important risk factor for Alzheimer's disease (AD), however, it is not required nor sufficient to cause the disease on its own. Herpes viruses cause acute and chronic diseases of the central nervous system and have been implicated in AD. Using a sensitive polymerase chain reaction method, latent herpes simplex virus type 1 (HSV-1) has been detected from five different brain regions (hippocampus, frontal cortex, occipital cortex, cerebellum and striatum) of neuropathologically confirmed AD and control tissue. HSV-1 positivity was then correlated with AD, presence of the virus in specific brain regions, and apoE genotype. The results confirm that the ε4 allele of apoE is a risk factor for AD, while HSV-1 alone is not. This held true for all five brain regions examined. Furthermore, no synergy between the two factors could be found when any one of the brain regions was examined individually or when the data were pooled. These findings emphasize that the ε4 allele of apoE is a risk factor for AD and that HSV-1, either alone or in combination with apoE, does not represent an increased risk for AD. Furthermore, no particular brain region seems to be more infected with HSV-1 than another, even in those regions most affected in AD.https://mjm.mcgill.ca/article/view/656alzheimer's diseaseherpes simplexapolipoprotein e
spellingShingle Uwe Beffert
Philippe Bertrand
Danielle Champagne
Serge Gauthier
Judes Poirier
Herpes Simplex Virus Type 1 in the Brain, Apolipoprotein E Genotype and Alzheimer’s Disease
McGill Journal of Medicine
alzheimer's disease
herpes simplex
apolipoprotein e
title Herpes Simplex Virus Type 1 in the Brain, Apolipoprotein E Genotype and Alzheimer’s Disease
title_full Herpes Simplex Virus Type 1 in the Brain, Apolipoprotein E Genotype and Alzheimer’s Disease
title_fullStr Herpes Simplex Virus Type 1 in the Brain, Apolipoprotein E Genotype and Alzheimer’s Disease
title_full_unstemmed Herpes Simplex Virus Type 1 in the Brain, Apolipoprotein E Genotype and Alzheimer’s Disease
title_short Herpes Simplex Virus Type 1 in the Brain, Apolipoprotein E Genotype and Alzheimer’s Disease
title_sort herpes simplex virus type 1 in the brain apolipoprotein e genotype and alzheimer s disease
topic alzheimer's disease
herpes simplex
apolipoprotein e
url https://mjm.mcgill.ca/article/view/656
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