Liu KL, Yu RJ, Feng GS, Wu J. Expression of insulin-like growth factor 1 in colorectal cancer: Relationship with angiogenesis.
Shijie Huaren Xiaohua Zazhi 2015;
23:3384-3389. [DOI:
10.11569/wcjd.v23.i21.3384]
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Abstract
AIM: To investigate the relationship between the expression of insulin-like growth factor 1 (IGF-1) and clinicopathological parameters, as well as tumor angiogenesis in colorectal cancer.
METHODS: The expression of IGF-1 was detected using immunohistochemical method in 56 colorectal carcinoma and 20 normal colon tissues. Microvessel density (MVD) was counted by evaluating the expression of endothelial marker CD34.
RESULTS: The positive rates of IGF-1 in colorectal carcinoma and normal mucosa were 85.71% and 35%, respectively. The expression of IGF-1 correlated with lymph node metastasis significantly (P < 0.05). MVD values were 8.76±2.67 and 35.55 ± 7.78 in normal colon tissue and colorectal cancer, respectively. MVD correlated significantly with differentiation degree, invasion depth, Duke's stage and lymph node metastasis (P < 0.05 for all).
CONCLUSION: IGF-1 is highly expressed in colorectal adenocarcinoma and may be involved in the progression of colorectal cancer through enhancing tumor angiogenesis.
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