Abstract | BACKGROUND: METHODS: We generated a mouse model of lung fibrosis induced by bleomycin to investigate the fibrotic effect of gefitinib. C57BL/6 mice were injected intratracheally with bleomycin or saline, with intragastric administration of gefitinib or saline. Lung tissues were harvested on day 14 or 21 for histology and genetic analysis. RESULTS: The histological results showed that bleomycin successfully induced lung fibrosis in mice, and gefitinib prevented lung fibrosis and suppressed the proliferation of S100A4-positive fibroblast cells. In addition, Western blotting analysis revealed that gefitinib decreased the expression of phosphorylated EGFR (p-EGFR). Furthermore, quantitative real-time PCR (qRT-PCR) demonstrated that gefitinib inhibited the accumulation of collagens I and III. CONCLUSIONS:
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Authors | Ping Wang, Qing Tian, Zhi-xin Liang, Zhen Yang, Shu-feng Xu, Ji-ping Sun, Liang-an Chen |
Journal | Chinese medical journal
(Chin Med J (Engl))
Vol. 123
Issue 16
Pg. 2259-64
(Aug 2010)
ISSN: 2542-5641 [Electronic] China |
PMID | 20819676
(Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
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Chemical References |
- Collagen Type I
- Collagen Type III
- Protein Kinase Inhibitors
- Quinazolines
- Bleomycin
- EGFR protein, mouse
- ErbB Receptors
- Gefitinib
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Topics |
- Animals
- Bleomycin
(toxicity)
- Blotting, Western
- Collagen Type I
(genetics)
- Collagen Type III
(genetics)
- ErbB Receptors
(metabolism)
- Gefitinib
- Male
- Mice
- Mice, Inbred C57BL
- Protein Kinase Inhibitors
(therapeutic use)
- Pulmonary Fibrosis
(chemically induced, drug therapy)
- Quinazolines
(therapeutic use)
- Reverse Transcriptase Polymerase Chain Reaction
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