Objective： To investigate the relationship between matrix metalloproteinases-9 （MMP-9） and sialyl Lewis X （CD15s） antigen in invasion and metastasis of gastric carcinoma. Methods： Expression of CD105, MMP-9 and ...Objective： To investigate the relationship between matrix metalloproteinases-9 （MMP-9） and sialyl Lewis X （CD15s） antigen in invasion and metastasis of gastric carcinoma. Methods： Expression of CD105, MMP-9 and CD15s in 47 cases of gastric carcinoma undergone radical surgery were evaluated by SP immunohistochemical staining using the respective monoclonal antibody. The microvessel density （MVD） marked with CD105 was detected. Correlation between MVD and MMP-9, CD15s was also statistically analyzed. Results： The MVD in both MMP-9 and CD15s positive expression group was higher significantly than that in MMP-9 or CD15s positive expression alone group, and it was also significantly higher than that in both MMP-9 and CD15s negative expression group. Conclusion： MMP-9 is a marker of invasion and CD15s is a marker of metastasis in gastric carcinoma. Combining detection of MMP-9 and CD15s has certain clinical significance for diagnosis, treatment and assessing the prognosis for gastric caner.展开更多
Background Transforming growth factor beta (TGF β) and matrix metalloproteinases 9 (MMP 9) have been implicated in the pathogenesis of human atherosclerosis but their relationship during lesion progression are poorly...Background Transforming growth factor beta (TGF β) and matrix metalloproteinases 9 (MMP 9) have been implicated in the pathogenesis of human atherosclerosis but their relationship during lesion progression are poorly understood The objective of this study was to investigate the expression of MMP 9, TGF β1 and TGF β receptor Ⅰ (TβR Ⅰ) in human atherosclerotic plaque and their relationship and plaque stability Methods Specimens of human coronary artery atherosclerotic plaques were obtained from 41 patients undergoing coronary endarterectomy, and were paraffin embedded, sectioned at 4 μm intervals then stained with haematoxylin and eosin They were divided into stable (with no or only little lipid core) and unstable plaque groups (with lipid core size>40%): the immunohistochemical staining were performed for MMP 9,TGF β1 and TβR Ⅰ Results The expression of MMP 9 in the unstable plaques was much higher than in the stable ones, but the expression of TGF β1 was higher in the stable plaques There was no similar significant difference for TβR Ⅰ Correlation analysis showed that there was a negative correlation between the expression of MMP 9 and TGF β1 ( r =-0 332, P =0 034 for average areal density; r =-0 373, P = 0 016 for average optical density) Conclusions There were close relationships between MMP 9, TGF β1 and plaque stability Enhanced production of MMP 9 may participate in the formation of unstable plaque, while TGF β1 maybe an important stabilizing factor in preventing transition into an unstable plaque phenotype展开更多
文摘Objective： To investigate the relationship between matrix metalloproteinases-9 （MMP-9） and sialyl Lewis X （CD15s） antigen in invasion and metastasis of gastric carcinoma. Methods： Expression of CD105, MMP-9 and CD15s in 47 cases of gastric carcinoma undergone radical surgery were evaluated by SP immunohistochemical staining using the respective monoclonal antibody. The microvessel density （MVD） marked with CD105 was detected. Correlation between MVD and MMP-9, CD15s was also statistically analyzed. Results： The MVD in both MMP-9 and CD15s positive expression group was higher significantly than that in MMP-9 or CD15s positive expression alone group, and it was also significantly higher than that in both MMP-9 and CD15s negative expression group. Conclusion： MMP-9 is a marker of invasion and CD15s is a marker of metastasis in gastric carcinoma. Combining detection of MMP-9 and CD15s has certain clinical significance for diagnosis, treatment and assessing the prognosis for gastric caner.
文摘Background Transforming growth factor beta (TGF β) and matrix metalloproteinases 9 (MMP 9) have been implicated in the pathogenesis of human atherosclerosis but their relationship during lesion progression are poorly understood The objective of this study was to investigate the expression of MMP 9, TGF β1 and TGF β receptor Ⅰ (TβR Ⅰ) in human atherosclerotic plaque and their relationship and plaque stability Methods Specimens of human coronary artery atherosclerotic plaques were obtained from 41 patients undergoing coronary endarterectomy, and were paraffin embedded, sectioned at 4 μm intervals then stained with haematoxylin and eosin They were divided into stable (with no or only little lipid core) and unstable plaque groups (with lipid core size>40%): the immunohistochemical staining were performed for MMP 9,TGF β1 and TβR Ⅰ Results The expression of MMP 9 in the unstable plaques was much higher than in the stable ones, but the expression of TGF β1 was higher in the stable plaques There was no similar significant difference for TβR Ⅰ Correlation analysis showed that there was a negative correlation between the expression of MMP 9 and TGF β1 ( r =-0 332, P =0 034 for average areal density; r =-0 373, P = 0 016 for average optical density) Conclusions There were close relationships between MMP 9, TGF β1 and plaque stability Enhanced production of MMP 9 may participate in the formation of unstable plaque, while TGF β1 maybe an important stabilizing factor in preventing transition into an unstable plaque phenotype
