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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Sci+Rep
2017 ; 7
(1
): 14941
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Metoprolol prevents chronic obstructive sleep apnea-induced atrial fibrillation
by inhibiting structural, sympathetic nervous and metabolic remodeling of the
atria
#MMPMID29097705
Sun L
; Yan S
; Wang X
; Zhao S
; Li H
; Wang Y
; Lu S
; Dong X
; Zhao J
; Yu S
; Li M
; Li Y
Sci Rep
2017[Nov]; 7
(1
): 14941
PMID29097705
show ga
Chronic obstructive sleep apnea (OSA) may promote the development of atrial
fibrillation (AF) by inducing atrial electrical and structural remodeling as well
as autonomic nerve hyperinnervation. Here, we investigated the roles of
metoprolol in regulation of atrial remodeling induced by chronic OSA. A canine
model of chronic OSA was established by stopping the ventilator and closing the
airway for 4?h/day every other day for 12 weeks, while metoprolol
(5?mg·kg-1·day-1) was continuously administered. Using that model, we observed
that increases in sympathetic sprouting and atrial structural remodeling were
sharply inhibited by metoprolol. Moreover, metoprolol dramatically inhibited the
impairment of atrial energy metabolism by activating the Sirt1-AMPK pathway. In
vitro, metoprolol significantly activated the Sirt1-AMPK pathway in intermittent
hypoxic and isoproterenol-treated HL-1 cells, and the effect was abolished by the
coadministration of EX-527, an inhibitor of Sirt1 activation. In summary,
metoprolol protects against chronic OSA-induced atrial remodeling. Our results
suggest a new and feasible treatment strategy for AF induced by OSA.
|AMP-Activated Protein Kinase Kinases
[MESH]
|Adrenergic beta-1 Receptor Antagonists/pharmacology/*therapeutic use
[MESH]
|Animals
[MESH]
|Atrial Fibrillation/*etiology/metabolism/pathology/*prevention & control
[MESH]