Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Warning: imagejpeg(C:\Inetpub\vhosts\kidney.de\httpdocs\phplern\26078813
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Oxid+Med+Cell+Longev
2015 ; 2015
(ä): 691070
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Hydrogen Sulfide Donor GYY4137 Protects against Myocardial Fibrosis
#MMPMID26078813
Meng G
; Zhu J
; Xiao Y
; Huang Z
; Zhang Y
; Tang X
; Xie L
; Chen Y
; Shao Y
; Ferro A
; Wang R
; Moore PK
; Ji Y
Oxid Med Cell Longev
2015[]; 2015
(ä): 691070
PMID26078813
show ga
Hydrogen sulfide (H2S) is a gasotransmitter which regulates multiple
cardiovascular functions. However, the precise roles of H2S in modulating
myocardial fibrosis in vivo and cardiac fibroblast proliferation in vitro remain
unclear. We investigated the effect of GYY4137, a slow-releasing H2S donor, on
myocardial fibrosis. Spontaneously hypertensive rats (SHR) were administrated
with GYY4137 by intraperitoneal injection daily for 4 weeks. GYY4137 decreased
systolic blood pressure and inhibited myocardial fibrosis in SHR as evidenced by
improved cardiac collagen volume fraction (CVF) in the left ventricle (LV), ratio
of perivascular collagen area (PVCA) to lumen area (LA) in perivascular regions,
reduced hydroxyproline concentration, collagen I and III mRNA expression, and
cross-linked collagen. GYY4137 also inhibited angiotensin II- (Ang II-) induced
neonatal rat cardiac fibroblast proliferation, reduced the number of fibroblasts
in S phase, decreased collagen I and III mRNA expression and protein synthesis,
attenuated oxidative stress, and suppressed ?-smooth muscle actin (?-SMA),
transforming growth factor-?1 (TGF-?1) expression as well as Smad2
phosphorylation. These results indicate that GYY4137 improves myocardial fibrosis
perhaps by a mechanism involving inhibition of oxidative stress, blockade of the
TGF-?1/Smad2 signaling pathway, and decrease in ?-SMA expression in cardiac
fibroblasts.