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2016 ; 6
(ä): 37166
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Cinaciguat prevents the development of pathologic hypertrophy in a rat model of
left ventricular pressure overload
#MMPMID27853261
Németh BT
; Mátyás C
; Oláh A
; Lux Á
; Hidi L
; Ruppert M
; Kellermayer D
; Kökény G
; Szabó G
; Merkely B
; Radovits T
Sci Rep
2016[Nov]; 6
(ä): 37166
PMID27853261
show ga
Pathologic myocardial hypertrophy develops when the heart is chronically
pressure-overloaded. Elevated intracellular cGMP-levels have been reported to
prevent the development of pathologic myocardial hypertrophy, therefore we
investigated the effects of chronic activation of the cGMP producing enzyme,
soluble guanylate cyclase by Cinaciguat in a rat model of pressure
overload-induced cardiac hypertrophy. Abdominal aortic banding (AAB) was used to
evoke pressure overload-induced cardiac hypertrophy in male Wistar rats. Sham
operated animals served as controls. Experimental and control groups were treated
with 10?mg/kg/day Cinaciguat (Cin) or placebo (Co) p.o. for six weeks,
respectively. Pathologic myocardial hypertrophy was present in the AABCo group
following 6 weeks of pressure overload of the heart, evidenced by increased
relative heart weight, average cardiomyocyte diameter, collagen content and
apoptosis. Cinaciguat did not significantly alter blood pressure, but effectively
attenuated all features of pathologic myocardial hypertrophy, and normalized
functional changes, such as the increase in contractility following AAB. Our
results demonstrate that chronic enhancement of cGMP signalling by
pharmacological activation of sGC might be a novel therapeutic approach in the
prevention of pathologic myocardial hypertrophy.
|Animals
[MESH]
|Apoptosis/*drug effects
[MESH]
|Benzoates/*pharmacology
[MESH]
|Blood Pressure/drug effects
[MESH]
|Cyclic GMP/*metabolism
[MESH]
|Hypertrophy, Left Ventricular/metabolism/pathology/physiopathology/*prevention &
control
[MESH]