Relationship between classification of Doppler ultrasound blood flow signals and angiogenesis in primary hepatocellular carcinoma
Objective To investigate the relationship of the classification of Doppler ultrasound blood flow signals with matrix metalloproteinase- 9 ( MMP- 9) expression and microvessel density ( MVD) in primary hepatocellular carcinoma ( PHC) . Methods Sixty patients with PHC, who underwent surgical resection in the Second Affiliated Hospital of Dalian Medical University from April 2008 to April 2013, were included in the study. These patients underwent ultrasound examination before operation. The classification of Doppler ultrasound blood flow signals in the focus was recorded. The expression of MMP- 9 and CD31 in carcinoma tissues was detected by immunohistochemistry, and MVD was calculated. Continuous data were analyzed by t test, while categorical data by chi- square test; the relationship was evaluated by Spearman correlation analysis. Results The classification of Doppler ultrasound blood flow signals was as follows: grade 0 ( 15 cases) ;grade 1 ( 20 cases) ; grade 2 ( 15 cases) ; grade 3 ( 10 cases) . The positive rate of MMP- 9 expression was 72. 3%. The MVD was 43. 2 ±5. 4. The classification of Doppler ultrasound blood flow signals in the focus was positively correlated with MMP- 9 expression and MVD ( r =0.56, P <0.05) . Conclusion The classification of Doppler ultrasound blood flow signals can reveal vascular changes in the focus, and it can be used in the clinical evaluation of angiogenesis in tumor tissues and the clinical diagnosis and treatment of PHC.
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