No evidence in support of a prodromal respiratory control signature in the TgF344-AD rat model of Alzheimer's disease.


Journal

Respiratory physiology & neurobiology
ISSN: 1878-1519
Titre abrégé: Respir Physiol Neurobiol
Pays: Netherlands
ID NLM: 101140022

Informations de publication

Date de publication:
07 2019
Historique:
received: 29 03 2018
revised: 25 05 2018
accepted: 29 06 2018
pubmed: 4 7 2018
medline: 3 4 2020
entrez: 4 7 2018
Statut: ppublish

Résumé

Alzheimer's disease (AD) is a progressive neurodegenerative condition disturbing major brain networks, including those pivotal to the motor control of breathing. The aim of this study was to examine respiratory control in the TgF344-AD transgenic rat model of AD. At 8-11 months of age, basal minute ventilation and ventilatory responsiveness to chemostimulation were equivalent in conscious wild-type (WT) and TgF344-AD rats. Under urethane anesthesia, basal diaphragm and genioglossus EMG activities were similar in WT and TgF344-AD rats. The duration of phenylbiguanide-induced apnoea was significantly shorter in TgF344-AD rats compared with WT. Following bilateral cervical vagotomy, diaphragm and genioglossus EMG responsiveness to chemostimulation were intact in TgF344-AD rats. Amyloid precursor protein C-terminal fragments were elevated in the TgF344-AD brainstem, in the absence of amyloid-β accumulation or alterations in tau phosphorylation. Brainstem pro-inflammatory cytokine concentrations were not increased in TgF344-AD rats. We conclude that neural control of breathing is preserved in TgF344-AD rats at this stage of the disease.

Identifiants

pubmed: 29969703
pii: S1569-9048(18)30104-6
doi: 10.1016/j.resp.2018.06.014
pii:
doi:

Substances chimiques

Amyloid beta-Protein Precursor 0
Presenilin-1 0

Types de publication

Journal Article Research Support, Non-U.S. Gov't

Langues

eng

Sous-ensembles de citation

IM

Pagination

55-67

Informations de copyright

Copyright © 2018 Elsevier B.V. All rights reserved.

Auteurs

Eric F Lucking (EF)

Department of Physiology, School of Medicine, College of Medicine & Health, University College Cork, Cork, Ireland.

Kevin H Murphy (KH)

Department of Physiology, School of Medicine, College of Medicine & Health, University College Cork, Cork, Ireland.

David P Burns (DP)

Department of Physiology, School of Medicine, College of Medicine & Health, University College Cork, Cork, Ireland.

Anirudh V Jaisimha (AV)

Department of Pharmacology and Therapeutics, School of Medicine, College of Medicine & Health, University College Cork, Cork, Ireland.

Kevin J Barry-Murphy (KJ)

Department of Physiology, School of Medicine, College of Medicine & Health, University College Cork, Cork, Ireland.

Pardeep Dhaliwal (P)

Department of Physiology, School of Medicine, College of Medicine & Health, University College Cork, Cork, Ireland.

Barry Boland (B)

Department of Pharmacology and Therapeutics, School of Medicine, College of Medicine & Health, University College Cork, Cork, Ireland.

Mark G Rae (MG)

Department of Physiology, School of Medicine, College of Medicine & Health, University College Cork, Cork, Ireland.

Ken D O'Halloran (KD)

Department of Physiology, School of Medicine, College of Medicine & Health, University College Cork, Cork, Ireland. Electronic address: k.ohalloran@ucc.ie.

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Classifications MeSH