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  • Title: [Expression of vascular endothelial growth factor and its receptors KDR and Flt1 in acute myeloid leukemia].
    Author: Wang Y, Xiao ZJ, Liu P, Yang C, Yang RC, Cai YL, Han ZC.
    Journal: Zhonghua Xue Ye Xue Za Zhi; 2003 May; 24(5):249-52. PubMed ID: 12859876.
    Abstract:
    OBJECTIVE: To evaluate the expression of vascular endothelial growth factor (VEGF) and its receptors KDR and Flt1 in patients with acute myeloid leukemia (AML). METHODS: The expression of VEGF and its receptors mRNA was assayed by RT-PCR, the plasma of VEGF by ELISA. RESULTS: In 13 AML cell lines, the expression of VEGF, KDR and Flt1 mRNA were found in 13 (100%), 7 (53.8%) and 12 (92.3%), respectively. There were 21 (65.6%), 1 (3.1%), and 17 (53.1%) of 31 (AML) patients bone marrow mononuclear cells (BMMNCs) expressing VEGF, KDR and Flt1 mRNA, respectively. None of BMMNCs from 3 normal donor and CD(34)(+) cells from 2 normal donor was found to express VEGF, KDR and Flt1 mRNA. The plasma level of VEGF of 39 patients (new diagnosed, relapsed and secondary-AML) before treatment was (135.3 +/- 87.9) ng/L which was significantly higher than that of 15 complete remission (CR) patients (80.6 +/- 36.9) ng/L and 12 normal donors (80.6 +/- 33.1) micro g/L (P = 0.028, 0.007). The plasma level of VEGF of 15 non-responsive patients was (188.2 +/- 118.6) ng/L after two cycles of chemotherapy which was higher than that of 20 CR patients [(104.2 +/- 30.9) ng/L] (P = 0.004). CONCLUSION: VEGF and its receptors KDR and Flt1 mRNAs were expressed in BMMNCs of AML patients. The plasma level of VEGF directly affected the response to chemotherapy in AML patients.
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