Dataset Information

Effects of the dual orexin receptor antagonist DORA-22 on sleep in 5XFAD mice.

ABSTRACT:

Introduction

Sleep disruption is a characteristic of Alzheimer's disease (AD) that may exacerbate disease progression. This study tested whether a dual orexin receptor antagonist (DORA) would enhance sleep and attenuate neuropathology, neuroinflammation, and cognitive deficits in an AD-relevant mouse model, 5XFAD.

Methods

Wild-type (C57Bl6/SJL) and 5XFAD mice received chronic treatment with vehicle or DORA-22. Piezoelectric recordings monitored sleep and spatial memory was assessed via spontaneous Y-maze alternations. Aβ plaques, Aβ levels, and neuroinflammatory markers were measured by immunohistochemistry, enzyme-linked immunosorbent assay, and real-time polymerase chain reaction, respectively.

Results

In 5XFAD mice, DORA-22 significantly increased light-phase sleep without reducing Aβ levels, plaque density, or neuroinflammation. Effects of DORA-22 on cognitive deficits could not be determined because the 5XFAD mice did not exhibit deficits.

Discussion

These findings suggest that DORAs may improve sleep in AD patients. Further investigations should optimize the dose and duration of DORA-22 treatment and explore additional AD-relevant animal models and cognitive tests.

SUBMITTER: Duncan MJ

PROVIDER: S-EPMC6396100 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature

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Publications

Effects of the dual orexin receptor antagonist DORA-22 on sleep in 5XFAD mice.

Duncan Marilyn J MJ Farlow Hannah H Tirumalaraju Chairtra C Yun Do-Hyun DH Wang Chanung C Howard James A JA Sanden Madison N MN O'Hara Bruce F BF McQuerry Kristen J KJ Bachstetter Adam D AD

Alzheimer's & dementia (New York, N. Y.) 20190228

<h4>Introduction</h4>Sleep disruption is a characteristic of Alzheimer's disease (AD) that may exacerbate disease progression. This study tested whether a dual orexin receptor antagonist (DORA) would enhance sleep and attenuate neuropathology, neuroinflammation, and cognitive deficits in an AD-relevant mouse model, 5XFAD.<h4>Methods</h4>Wild-type (C57Bl6/SJL) and 5XFAD mice received chronic treatment with vehicle or DORA-22. Piezoelectric recordings monitored sleep and spatial memory was assesse ...[more]

PMID: 30859123

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Dataset Information

Effects of the dual orexin receptor antagonist DORA-22 on sleep in 5XFAD mice.

Introduction

Methods

Results

Discussion

Publications

Effects of the dual orexin receptor antagonist DORA-22 on sleep in 5XFAD mice.

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