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  • Title: [Expression of hypoxia inducible factor-1α and insulin in pancreatic cancer and their correlation].
    Author: Wang TL, Liu T, Gou SM, Wang L, Zhou W, Wang CY.
    Journal: Zhonghua Zhong Liu Za Zhi; 2012 May; 34(5):348-51. PubMed ID: 22883454.
    Abstract:
    OBJECTIVE: To explore the correlation between the expressions of hypoxia inducible factor-1α (HIF-1α) and insulin in pancreatic cancer. METHODS: HIF-1α and insulin expression was detected by immunohistochemistry in the center and the edge of pancreatic adenocarcinoma specimens of 65 cases. Western blot was used to detect HIF-1α expression and insulin level in the center and the edge of pancreatic adenocarcinoma specimens of 28 cases. The relationship between HIF-1α expression and insulin level in the pancreatic cancer was analyzed. RESULTS: The results of immunohistochemistry and Western blot showed that HIF-1α protein expression was high in both the center and the edge of pancreatic cancers (P > 0.05), and insulin level was significantly higher at the edge of specimen than that in the center (P < 0.05). HIF-1α protein and insulin levels were positively correlated at the edge of cancer tissue (r = 0.374, P < 0.05), but no significant correlation between them in the center of cancerous tissue (r = -0.145, P > 0.05). CONCLUSION: Insulin may promote the local invasion and metastasis of pancreatic cancer by up-regulating HIF-1α.
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