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2017 ; 15
(5
): 2604-2610
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Vatalanib, a tyrosine kinase inhibitor, decreases hepatic fibrosis and sinusoidal
capillarization in CCl4-induced fibrotic mice
#MMPMID28447731
Kong LJ
; Li H
; Du YJ
; Pei FH
; Hu Y
; Zhao LL
; Chen J
Mol Med Rep
2017[May]; 15
(5
): 2604-2610
PMID28447731
show ga
Among the various consequence arising from lung injury, hepatic fibrosis is the
most severe. Decreasing the effects of hepatic fibrosis remains one of the
primary therapeutic challenges in hepatology. Dysfunction of hepatic sinusoidal
endothelial cells is considered to be one of the initial events that occur in
liver injury. Vascular endothelial growth factor signaling is involved in the
progression of genotype changes. The aim of the present study was to determine
the effect of the tyrosine kinase inhibitor, vatalanib, on hepatic fibrosis and
hepatic sinusoidal capillarization in a carbon tetrachloride (CCl4)?induced mouse
model of liver fibrosis. Liver fibrosis was induced in BALB/c mice using CCl4 by
intraperitoneal injection for 6 weeks. The four experimental groups included a
control, and three experimental groups involving administration of CCl4,
vatalanib and a combination of the two. Histopathological staining and measuring
live hydroxyproline content evaluated the extent of liver fibrosis. The
expression of ??smooth muscle actin (SMA) and cluster of differentiation (CD) 34
was detected by immunohistochemistry. Collagen type I, ??SMA, transforming growth
factor (TGF)??1 and vascular endothelial growth factor receptor (VEGFR)
expression levels were measured by reverse transcription-quantitative polymerase
chain reaction (RT?qPCR). The average number of fenestrae per hepatic sinusoid
was determined using transmission electron microscopy. Liver fibrosis scores and
hydroxyproline content were decreased in both vatalanib groups. In addition, both
doses of vatalanib decreased mRNA expression levels of hepatic ?-SMA, TGF-?1,
collagen?1, VEGFR1, and VEGFR2. Levels of ??SMA and CD34 protein were decreased
in the vatalanib group compared with the CCl4 group. There were significant
differences in the number of fenestrae per sinusoid between the groups. The
present study identified that administration of vatalanib was associated with
decreased liver fibrosis and hepatic sinusoidal capillarization in CCl4-induced
mouse models, and is a potential compound for counteracting liver fibrosis.