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| Status |
Public on Oct 18, 2007 |
| Title |
Angiogenesis inhibitors ameliorates inflammatory infiltrate, fibrosis and portal pressure in cirrhotic rats |
| Organism |
Rattus norvegicus |
| Experiment type |
Expression profiling by array
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| Summary |
Background and aims: There are considerable evidences demonstrating that angiogenesis and chronic inflammation are mutually dependent. However, although cirrhosis progression is characterized with a chronic hepatic inflammatory process, this connection is not sufficiently explored as a therapeutic strategy. Therefore, this study was aimed to assess the potential benefits of targeting angiogenesis in cirrhotic livers to modulate inflammation and fibrosis. For this purpose, we evaluate the therapeutic utility of angiogenesis inhibitors. Methods: The in vivo effects of angiogenesis inhibitors were monitored in liver of cirrhotic rats by measuring angiogenesis, inflammatory infiltrate, fibrosis, a-smooth muscle actin (a-SMA) accumulation, differential gene expression (by microarrays), and portal pressure. Results: Cirrhosis progression was associated with a significant enhancement of vascular density and expression of vascular endothelial growth factor-A (VEGF-A), angiopoietin-1, angiopoietin-2 and placental growth factor (PlGF) in cirrhotic livers. The newly formed hepatic vasculature expressed vascular cell adhesion molecule-1 (VCAM-1) and intercellular adhesion molecule-1 (ICAM-1). Interestingly, the expression of these adhesion molecules correlated well with local inflammatory infiltrate. Livers of cirrhotic rats treated with angiogenesis inhibitors presented a significant decrease in hepatic vascular density, inflammatory infiltrate, a-SMA abundance, collagen expression and portal pressure. Conclusion: Angiogenesis inhibitors may offer a potential novel therapy for cirrhosis due to its multiple mechanisms of action against angiogenesis, inflammation and fibrosis in cirrhotic livers.
Keywords: angiogenesis, cirrhosis, liver, Affymetrix, fibrosis
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| Overall design |
RNA from liver of 4 non-treated cirrhotic rats or 4 rats treated with angiogenesis inhibitors was hybridized to 8 high-density oligonucleotide microarray (Rat2302, Affymetrix, Santa Clara, CA)
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| Contributor(s) |
Morales-Ruiz M, Tugues S, Jimenez W |
| Citation(s) |
17935226 |
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| Submission date |
Feb 01, 2007 |
| Last update date |
Jul 31, 2017 |
| Contact name |
Manuel Morales-Ruiz |
| E-mail(s) |
morales@clinic.ub.es
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| Phone |
34932275400 (2667)
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| Organization name |
Hospital Clinic
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| Department |
Biochemistry and Molecular Genetics
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| Street address |
Villarroel 170
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| City |
Barcelona |
| ZIP/Postal code |
08036 |
| Country |
Spain |
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| Platforms (1) |
| GPL1355 |
[Rat230_2] Affymetrix Rat Genome 230 2.0 Array |
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| Samples (8)
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| Relations |
| BioProject |
PRJNA98087 |
| Supplementary file |
Size |
Download |
File type/resource |
| GSE6929_RAW.tar |
33.2 Mb |
(http)(custom) |
TAR (of CEL) |
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