The action mechanism of matrix metalloproteinases-2 （MMP-2） and tissue inhibitor of metalloproteinases-2 （TIMP-2） in the genesis, development and degeneration of haemangioma was investigated by detecting their exp...The action mechanism of matrix metalloproteinases-2 （MMP-2） and tissue inhibitor of metalloproteinases-2 （TIMP-2） in the genesis, development and degeneration of haemangioma was investigated by detecting their expression in the tissue of haemangioma in different phases by using the immunohistochemistry. Fifty paraffin-embedded specimens of skin capillary haemangioma were collected, which were documented in the Department of Pathology, Renmin Hospital of Wuhan University from 2000 to 2006. All samples were stained by regular HE method, and proliferative cell nuclear antigen （PCNA） was tested by immunohistochemical S-P method. The samples were classified according to the Mulliken criteria and the expression pattern of PCNA. Immunohistochemical S-P method was ap- plied to detect the expression of MMP-2 and TIMP-2 in proliferative and degenerative phases of cutaneous capillary haemangioma, and in normal skin tissues. In combination with the detection of the expression of factor Ⅷ-related antigen, it was verified that in haemangioma tissues, the cells expressing MMP-2 and TIMP-2 were vascular endothelial cells. The MMP-2 and TIMP-2 expression was quantitatively analyzed by image analysis system （HPIAS-1000）, and one-way ANOVA（107） and SNK（q） test were done to analyze average absorbance （A） and positive area rate of immunohistochemically positive particles by using SPSS11.5. The results showed： （1） Among 50 samples of haemangioma, there were 26 proliferative haemangiomas, and 24 degenerative haemangiomas, respectively; （2） The expression of MMP-2 was weak in normal vascular endothelial cells, cytoplasm of connective tissues and extracellular matrix around blood vessels. The expression of MMP-2 in proliferative group was significantly higher than in degenerative group and control group （normal skin） （P〈0.05）, but there was no statistically significant difference between the latter two groups; （3） TIMP-2 was highly expressed in normal tissues, degenerative vascular en展开更多
目的探讨基质金属蛋白酶(matrix metalloproteinase,MMP)-2、14及基质金属蛋白酶组织抑制因子-2(tissueinhibitor of metalloproteinase,TIMP-2)在胃癌中的表达及其意义。方法用免疫组织化学方法(SP法)检测80例胃癌手术患者胃癌组织及3...目的探讨基质金属蛋白酶(matrix metalloproteinase,MMP)-2、14及基质金属蛋白酶组织抑制因子-2(tissueinhibitor of metalloproteinase,TIMP-2)在胃癌中的表达及其意义。方法用免疫组织化学方法(SP法)检测80例胃癌手术患者胃癌组织及30例同期癌旁≥5cm正常组织中MMP-2、MMP-14及TIMP-2的表达。结果①在胃癌、正常胃组织中,MMP-2阳性表达率分别为75.00%和36.67%,MMP-14阳性表达率分别为82.50%和33.33%,差异有统计学意义(均P<0.01);TIMP-2阳性表达率分别为45.00%和40.00%,差异无统计学意义。②癌组织中,MMP-2、MMP-14的表达与肿瘤分化程度、浸润深度、淋巴结有无转移和TNM临床分期密切相关(均P<0.01)。TIMP-2的表达仅与淋巴结有无转移相关(P<0.05)。③生存期<2年患者的MMP-2、MMP-14表达率明显高于生存期≥2年患者(均P<0.01)。结论胃癌组织中,MMP-2、MMP-14高表达,联合检测MMP-2、MMP-14或MMP-2、MMP-14、TIMP-2可作为胃癌恶性程度及预后判断的指标。展开更多
基金supported by a grant from the National Natural Sciences Foundation of China (No.30872688)
文摘The action mechanism of matrix metalloproteinases-2 （MMP-2） and tissue inhibitor of metalloproteinases-2 （TIMP-2） in the genesis, development and degeneration of haemangioma was investigated by detecting their expression in the tissue of haemangioma in different phases by using the immunohistochemistry. Fifty paraffin-embedded specimens of skin capillary haemangioma were collected, which were documented in the Department of Pathology, Renmin Hospital of Wuhan University from 2000 to 2006. All samples were stained by regular HE method, and proliferative cell nuclear antigen （PCNA） was tested by immunohistochemical S-P method. The samples were classified according to the Mulliken criteria and the expression pattern of PCNA. Immunohistochemical S-P method was ap- plied to detect the expression of MMP-2 and TIMP-2 in proliferative and degenerative phases of cutaneous capillary haemangioma, and in normal skin tissues. In combination with the detection of the expression of factor Ⅷ-related antigen, it was verified that in haemangioma tissues, the cells expressing MMP-2 and TIMP-2 were vascular endothelial cells. The MMP-2 and TIMP-2 expression was quantitatively analyzed by image analysis system （HPIAS-1000）, and one-way ANOVA（107） and SNK（q） test were done to analyze average absorbance （A） and positive area rate of immunohistochemically positive particles by using SPSS11.5. The results showed： （1） Among 50 samples of haemangioma, there were 26 proliferative haemangiomas, and 24 degenerative haemangiomas, respectively; （2） The expression of MMP-2 was weak in normal vascular endothelial cells, cytoplasm of connective tissues and extracellular matrix around blood vessels. The expression of MMP-2 in proliferative group was significantly higher than in degenerative group and control group （normal skin） （P〈0.05）, but there was no statistically significant difference between the latter two groups; （3） TIMP-2 was highly expressed in normal tissues, degenerative vascular en
文摘目的探讨基质金属蛋白酶(matrix metalloproteinase,MMP)-2、14及基质金属蛋白酶组织抑制因子-2(tissueinhibitor of metalloproteinase,TIMP-2)在胃癌中的表达及其意义。方法用免疫组织化学方法(SP法)检测80例胃癌手术患者胃癌组织及30例同期癌旁≥5cm正常组织中MMP-2、MMP-14及TIMP-2的表达。结果①在胃癌、正常胃组织中,MMP-2阳性表达率分别为75.00%和36.67%,MMP-14阳性表达率分别为82.50%和33.33%,差异有统计学意义(均P<0.01);TIMP-2阳性表达率分别为45.00%和40.00%,差异无统计学意义。②癌组织中,MMP-2、MMP-14的表达与肿瘤分化程度、浸润深度、淋巴结有无转移和TNM临床分期密切相关(均P<0.01)。TIMP-2的表达仅与淋巴结有无转移相关(P<0.05)。③生存期<2年患者的MMP-2、MMP-14表达率明显高于生存期≥2年患者(均P<0.01)。结论胃癌组织中,MMP-2、MMP-14高表达,联合检测MMP-2、MMP-14或MMP-2、MMP-14、TIMP-2可作为胃癌恶性程度及预后判断的指标。
