No evidence in support of a prodromal respiratory control signature in the TgF344-AD rat model of Alzheimer's disease.
Alzheimer Disease
/ metabolism
Amyloid beta-Protein Precursor
/ metabolism
Anesthesia, General
Animals
Apnea
/ physiopathology
Brain Stem
/ metabolism
Diaphragm
/ physiopathology
Disease Models, Animal
Electromyography
Presenilin-1
/ metabolism
Prodromal Symptoms
Rats
Rats, Inbred F344
Rats, Transgenic
Reflex
/ physiology
Respiration
Tongue
/ physiopathology
Vagotomy
Amyloid precursor protein
Neuroinflammation
Presenilin-1
Pulmonary chemoreflex
Respiratory behaviour
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
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
55-67Informations de copyright
Copyright © 2018 Elsevier B.V. All rights reserved.