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Recurrent herpes simplex virus-1 infection induces hallmarks of neurodegeneration and cognitive deficits in mice.
- Source :
- PLoS Pathogens; 3/14/2019, Vol. 15 Issue 3, p1-30, 30p
- Publication Year :
- 2019
-
Abstract
- Herpes simplex virus type 1 (HSV-1) is a DNA neurotropic virus, usually establishing latent infections in the trigeminal ganglia followed by periodic reactivations. Although numerous findings suggested potential links between HSV-1 and Alzheimer’s disease (AD), a causal relation has not been demonstrated yet. Hence, we set up a model of recurrent HSV-1 infection in mice undergoing repeated cycles of viral reactivation. By virological and molecular analyses we found: i) HSV-1 spreading and replication in different brain regions after thermal stress-induced virus reactivations; ii) accumulation of AD hallmarks including amyloid-β protein, tau hyperphosphorylation, and neuroinflammation markers (astrogliosis, IL-1β and IL-6). Remarkably, the progressive accumulation of AD molecular biomarkers in neocortex and hippocampus of HSV-1 infected mice, triggered by repeated virus reactivations, correlated with increasing cognitive deficits becoming irreversible after seven cycles of reactivation. Collectively, our findings provide evidence that mild and recurrent HSV-1 infections in the central nervous system produce an AD-like phenotype and suggest that they are a risk factor for AD. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 15537366
- Volume :
- 15
- Issue :
- 3
- Database :
- Complementary Index
- Journal :
- PLoS Pathogens
- Publication Type :
- Academic Journal
- Accession number :
- 135310335
- Full Text :
- https://doi.org/10.1371/journal.ppat.1007617