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Experimental study on residual tumor angiogenesis after cryoablation
Chun-Hua Ma1, Rong Jiang, Jin-Duo Li
1Department of Tumor Intervention, Key Laboratory of Cerebrovascular and Neurodegenerative Diseases in Tianjin, Tianjin, China
Asian Pacific Journal of Cancer Prevention : APJCP
|April 26, 2014
Summary
Cryoablation effectively inhibits tumor growth. However, residual tumors show increased angiogenesis, driven by high vascular endothelial growth factor (VEGF) expression, indicating its crucial role in this process.
Area of Science:
- Oncology
- Cancer Research
- Angiogenesis
Background:
- Tumor angiogenesis is critical for tumor growth and metastasis.
- Understanding the role of vascular endothelial growth factor (VEGF) in tumor angiogenesis is essential for developing effective cancer therapies.
Purpose of the Study:
- To investigate the mechanism and significance of tumor angiogenesis after cryoablation.
- To analyze changes in micro-vessel density (MVD) and VEGF expression in residual tumors post-cryoablation.
Main Methods:
- Established A549 lung adenocarcinoma xenograft models in nude mice.
- Compared cryoablation with control and cisplatin (DDP) treatment groups.
- Assessed micro-vessel density (MVD) and VEGF expression using immunohistochemistry in tumor tissues.
Main Results:
- Cryoablation significantly inhibited tumor growth compared to control and DDP groups (P < 0.01).
- Micro-vessel density (MVD) and VEGF expression were significantly higher in the cryoablation group (P < 0.01).
- A strong positive correlation was observed between MVD and VEGF expression (r = 0.928, P < 0.01).
Conclusions:
- Cryoablation is an effective method for inhibiting tumor growth.
- Residual tumors after cryoablation exhibit increased angiogenesis.
- High VEGF expression plays a significant role in promoting angiogenesis in residual tumors post-cryoablation.
