Inhibitory effect of angiotensin (1-7) on hepatic sinusoid angiogenesis in bile duct ligation-induced hepatic fibrosis of rats / 中华肝脏病杂志
Chinese Journal of Hepatology
;
(12): 907-913, 2013.
Article
in Chinese
| WPRIM
| ID: wpr-252300
ABSTRACT
<p><b>OBJECTIVE</b>To explore the inhibitory effect of angiotensin (1-7) on hepatic sinusoid angiogenesis using a rat model of hepatic fibrosis.</p><p><b>METHODS</b>Eighteen male Wistar rats were randomly divided into three equal groups for sham operation (untreated/uninduced control group), bile duct ligation (BDL) (untreated model group), or BDL with angiotensin (1-7) treatment (treated model group). Histological analysis was used to assess the liver fibrosis score, by hematoxylin-eosin staining, and the level of fibrosis, by Masson's trichrome staining. Immunohistochemistry, western blotting, and immunofluorescence were used to assess the expression of the angiogenesis markers vWF, VEGFA, and CD31.</p><p><b>RESULTS</b>Compared with the untreated/uninduced control group, the untreated BDL model group showed remarkably higher fibrosis score, area of the type I collagen expression, and expression levels of vWF, VEGFA, and CD31. However, the angiotensin (1-7)-treatment protected against the BLD-related changes, as evidenced by decreased robustness and down-regulation of the corresponding indicators. Moreover, the expression level of VEGFA was highly correlated to the expression level of vWF (r = 0.956, P = 0.000).</p><p><b>CONCLUSION</b>BDL-induced hepatic fibrosis is accompanied by significant increases in angiogenesis-related factors, but angiotensin (1-7) treatment may inhibit hepatic sinusoid angiogenesis during the liver fibrosis process.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Pathology
/
Peptide Fragments
/
General Surgery
/
Bile Ducts
/
Von Willebrand Factor
/
Angiotensin I
/
Rats, Wistar
/
Platelet Endothelial Cell Adhesion Molecule-1
/
Vascular Endothelial Growth Factor A
/
Therapeutic Uses
Type of study:
Prognostic study
Limits:
Animals
Language:
Chinese
Journal:
Chinese Journal of Hepatology
Year:
2013
Type:
Article
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