基质金属蛋白酶9及微血管密度在前列腺癌组织中的表达及意义

目的 研究前列腺癌(PCa)组织中基质金属蛋白酶9(MMP-9)的表达和微血管密度(MVD),探讨二者与PCa侵袭转移的关系.方法 对42例PCa标本和28例良性前列腺增生症(BPH)标本行MMP-9、CD34(标记MVD)免疫组化染色,检测它们在前列腺组织中的表达情况,对照临床分期及病理结果,采用统计学方法 进行分析.结果 MMP-9在BPH和PCa组织中的阳性表达率分别为10.7%(3/28)、54.8%(23/42),MMP-9在PCa组织中的阳性表达率明显高于BPH(P<0.05).MMP-9在PCa转移者(C+D期)和局限者(A+B期)中阳性表达率分别为76.9%(20/26)、18.8%(3/16),两者比较差异有统计学意义(P<0.01).PCa转移者MVD值为(69.47±11.86)个/视野,局限者MVD值为(51.09±11.98)个/视野,两者比较差异有统计学意义(P<0.01),而且PCa标本的MVD值均明显高于BPH标本的(27.92±8.41)个/视野(P<0.01).在PCa中MVD值与MMP-9阳性表达呈显著正相关(r=0.325,P<0.05).结论 MVD值、MMP-9阳性表达可作为判断PCa浸润转移的指标.

Abstract：

Objective To study the expression of matrix metalloproteinase 9 (MMP-9) and microvessel density (MVD) in prostatic cancer (PCa) and correlation with their metastasis. Methods The expression of MMP-9 and CD34(marked MVD) was detected by immunohistochemistry in 70 cases of prostatic diseases,including PCa (42 cases) and benign prostatic hyperplasia (BPH)(28 cases), compared clinical-stage and pathology and studied their results by statistical methods. Results The positive rate of MMP-9 in BPH and PCa was 10.7% (3/28) and 54.8% (23/42), the positive rate of MMP-9 was significantly higher in PCa than that in BPH (P< 0.05). The positive rate of MMP-9 in PCa metastasis group (C+D phase) and situ group (A+B phase) was 76.9% (20/26) and 18.8% (3/16),there was statistically significant difference between PCa metastasis group and situ group (P < 0.01). The concentration of MVD in PCa metastasis group and situ group was (69.47 ± 11.86), (51.09 ± 11.98) points each view, there was statistically significant difference between PCa metastasis group and situ group(P< 0.01) ,and all of MVD in PCa was significantly higher than that in BPH (27.92 ± 8.41) points each view (P < 0.01). The higher MMP-9 expression was positively correlated with increased MVD in PCa (r = 0.325,P< 0.05). Conclusion MMP-9 and MVD can be as indicator to pridict the metastasis of PCa.

Significance and expression of matrix metalloproteinase 9 and microvessel density in prostatic cancer

Objective To study the expression of matrix metalloproteinase 9 (MMP-9) and microvessel density (MVD) in prostatic cancer (PCa) and correlation with their metastasis. Methods The expression of MMP-9 and CD34(marked MVD) was detected by immunohistochemistry in 70 cases of prostatic diseases,including PCa (42 cases) and benign prostatic hyperplasia (BPH)(28 cases), compared clinical-stage and pathology and studied their results by statistical methods. Results The positive rate of MMP-9 in BPH and PCa was 10.7% (3/28) and 54.8% (23/42), the positive rate of MMP-9 was significantly higher in PCa than that in BPH (P< 0.05). The positive rate of MMP-9 in PCa metastasis group (C+D phase) and situ group (A+B phase) was 76.9% (20/26) and 18.8% (3/16),there was statistically significant difference between PCa metastasis group and situ group (P < 0.01). The concentration of MVD in PCa metastasis group and situ group was (69.47 ± 11.86), (51.09 ± 11.98) points each view, there was statistically significant difference between PCa metastasis group and situ group(P< 0.01) ,and all of MVD in PCa was significantly higher than that in BPH (27.92 ± 8.41) points each view (P < 0.01). The higher MMP-9 expression was positively correlated with increased MVD in PCa (r = 0.325,P< 0.05). Conclusion MMP-9 and MVD can be as indicator to pridict the metastasis of PCa.