Dysfunction of the glutamatergic photoreceptor synapse in the P301S mouse model of tauopathy.
Alzheimer’s disease
P301S mouse
Phosphorylated tau
Retina
Synapsis
Journal
Acta neuropathologica communications
ISSN: 2051-5960
Titre abrégé: Acta Neuropathol Commun
Pays: England
ID NLM: 101610673
Informations de publication
Date de publication:
11 01 2023
11 01 2023
Historique:
received:
13
10
2022
accepted:
04
12
2022
entrez:
11
1
2023
pubmed:
12
1
2023
medline:
14
1
2023
Statut:
epublish
Résumé
Tauopathies, including Alzheimer's disease, are characterized by retinal ganglion cell loss associated with amyloid and phosphorylated tau deposits. We investigated the functional impact of these histopathological alterations in the murine P301S model of tauopathy. Visual impairments were demonstrated by a decrease in visual acuity already detectable at 6 months, the onset of disease. Visual signals to the cortex and retina were delayed at 6 and 9 months, respectively. Surprisingly, the retinal output signal was delayed at the light onset and advanced at the light offset. This antagonistic effect, due to a dysfunction of the cone photoreceptor synapse, was associated with changes in the expression of the vesicular glutamate transporter and a microglial reaction. This dysfunction of retinal glutamatergic synapses suggests a novel interpretation for visual deficits in tauopathies and it highlights the potential value of the retina for the diagnostic assessment and the evaluation of therapies in Alzheimer's disease and other tauopathies.
Identifiants
pubmed: 36631898
doi: 10.1186/s40478-022-01489-3
pii: 10.1186/s40478-022-01489-3
pmc: PMC9832799
doi:
Substances chimiques
tau Proteins
0
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
5Informations de copyright
© 2023. The Author(s).
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