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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 J+Geriatr+Cardiol
2017 ; 14
(5
): 301-307
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Xinfuli Granule improves post-myocardial infarction ventricular remodeling and
myocardial fibrosis in rats by regulating TGF-?/Smads signaling pathway
#MMPMID28630605
Ma J
; Li ZY
; Liang XP
; Guo CX
; Lu PP
; Ma LH
J Geriatr Cardiol
2017[May]; 14
(5
): 301-307
PMID28630605
show ga
BACKGROUND: Recent clinical and experimental studies have confirmed the effects
of Xinfuli Granule (XG), a compound Chinese medicine in the prevention and
treatment of heart failure (HF). This study aimed to investigate the effects and
the mechanisms of XG on ventricular reconstruction in rats with acute myocardial
infarction (AMI). METHODS: Sprague-Dawley rats were subjected to left anterior
descending branch ligation. The rats that survived 24 h were randomly assigned to
five groups: medium-dose of XG group (MI+XGM), high-dose of XG group (MI+XGH),
carvedilol group (MI+C), medium-dose of XG + carvedilol group (MI+C+XGM).
Fourteen rats underwent identical surgical procedures without artery ligation,
serving as sham controls. At 28 days, left ventricular weight to body weight
(LVW/BW) and heart weight to body weight (HW/BW) were calculated; left
ventricular ejection fraction (LVEF), left ventricular shortening fraction
(LVFS), left ventricular internal diameter at systole (LVIDS) were measured by
ultrasound; HE staining, Masson staining, and Sirius red staining were used to
assess the myocardial pathological and physiological changes as well as
myocardial fibrosis area and non-infarct zone I/III collagen ratio. Expression of
Smad3 were detected and analyzed by Western blot, immunohistochemistry and
immunofluorescence. P-Smad3, Smad2 and Smad7 in the TGF-?/Smads signaling pathway
were also analyzed by Western blot. RESULTS: The LVIDS (P < 0.01), HW/BW (P <
0.05), type I/III collagen ratio (P < 0.01) and myocardial collagen (P < 0.01)
decreased significantly while the LVW/BW, LVFS (P < 0.05) increased significantly
in MI+XGM group as compared with those in other groups. The expression of key
signal molecules of the TGF-?/Smads signaling pathway, including Smad3, P-Smad3
and Smad2 protein were decreased, while the expression of Smad7 increased in both
XG and carvedilol treatment groups as compared to those of the MI group (all P <
0.01). Immunohistochemistry and immunofluorescence further confirmed the
down-regulated Smad3 expression. CONCLUSION: XG can improve ventricular
reconstruction and inhibit myocardial fibrosis in rats with AMI by regulating
TGF-?/Smads signaling pathway.