AIM： To investigate the prognostic significance of PECAM-1, ICAM-3 and HLA-DR antigens in patients with primary non-Hodgkin＇s gastric lymphoma. METHODS： We immunohistochemically studied PECAM-1, ICAM-3 and HLA-DR a...AIM： To investigate the prognostic significance of PECAM-1, ICAM-3 and HLA-DR antigens in patients with primary non-Hodgkin＇s gastric lymphoma. METHODS： We immunohistochemically studied PECAM-1, ICAM-3 and HLA-DR antigen expression in 36 B-cell MALT-type primary gastric lymphoma patients. Ten non-malignant and ten healthy gastric tissue specimens were used as controls. Clinicopathological and survival data were correlated with the staining results. RESULTS： HLA-DR antigen expression was detected in 33 gastric lymphoma patients （91.7%） and 6 nonmalignant patients （54.5%）. PECAM-1 stained tumor cells of 10 patients （27.8%）, endothelial cells of 9 patients （25%） and inflammatory infiltrate of 4 patients （40%） with benign gastric disease. ICAM-3 expression was observed on the tumor cells of 17 patients （47.2%）, while 5 non-malignant patients （50%） were stained positive as well. None of the healthy controls was stained for any of the genes studied. In the multivariate analysis, HLA-DR antigen and PECAM-1 were proved to be statistically significant independent prognostic factors associated with a favourable and an unfavourable prognosis respectively （P= 0.009 and P= 0.003）. In the univariate analysis, PECAM-1（＋）/ICAM-3（-） and HLA-DR（-）/ICAM-3（-） patients exhibited a significantly decreased overall survival compared to those with the exactly opposite gene expression patterns （P=0.0041 and P= 0.0091, respectively）. Those patients who were HLA-DR（＋ ）/ICAM-3（＋ ）/PECAM-I（-） （n = 8） had a significantly higher survival rate compared to the rest of the group （n = 24） （P= 0.0289）. CONCLUSION： PECAM-1, ICAM-3 and HLA-DR are representative markers of tumor expansion potential and host immune surveillance respectively. Their combined use may help us to identify high-risk patients who could benefit from more aggressive therapeutic protocols.展开更多
Although the effectiveness of methotrexate (MTX) in the treatment of psoriasis is very well established, the mechanism of action is poorly understood. It was suggested that the therapeutic effect of MTX in psoriasis m...Although the effectiveness of methotrexate (MTX) in the treatment of psoriasis is very well established, the mechanism of action is poorly understood. It was suggested that the therapeutic effect of MTX in psoriasis might be mediated by inhibition of adhesion molecule expression. The aim of our study was to investigate the different effects of MTX treatment on cell proliferation, inflammatory infiltrate, adhesion molecules, and angiogenesis in psoriasis, and to clarify the mechanism by which MTX exerts its therapeutic effects. Clinical response, the morpho- phenot- ypic changes, epidermal thickness, and mitosis count were analyzed and the expression of CD31 and ICAM- 3, proliferative markers such as Ki- 67, PCNA, were evaluated by immunohistochemical techniques in lesional psoriatic epidermis, before and after the treatment with MTX in ten patients. In posttreatment biopsies a decrease in the degree of epidermal hyperplasia and a significant reduction in the severity of the inflammatory infiltrate (P< 0.05) were observed. In addition,CD31 and ICAM- 3 expression was significantly decreased ondermal cellular infiltrate, (respectively; P< 0.05,P< 0.01). Ki67 and PCNA expression were suppressed concurrently in about 90% of cases (P< 0.01). We suggest that MTX may have an inhibitory effect on an initial integral component of the pathways that lead to psoriasis. Immunopharmacologic intervention in adhesion event has the potential to improve psoriasis. Inhibition of revascularization may be another mechanism of actionof MTX.展开更多
目的研究腹主动脉瘤患者血清Fibulin-3、骨桥蛋白(OPN)、ICAM-1的表达及意义,分析血清Fibulin-3、OPN、ICAM-1与腹主动脉瘤的关系。方法选取收治的50例腹主动脉瘤患者为AAA组,同时选取同时期体检的50例健康人为对照组。采用酶联免疫吸...目的研究腹主动脉瘤患者血清Fibulin-3、骨桥蛋白(OPN)、ICAM-1的表达及意义,分析血清Fibulin-3、OPN、ICAM-1与腹主动脉瘤的关系。方法选取收治的50例腹主动脉瘤患者为AAA组,同时选取同时期体检的50例健康人为对照组。采用酶联免疫吸附法检测Fibulin-3、OPN水平,采用酶标仪双抗体夹心法测定ICAM-1水平。结果AAA组血清Fibulin-3表达水平低于对照组,OPN、ICAM-1表达水平高于对照组,差异有统计学意义(P<0.05)。随着腹主动脉瘤不断增大Fibulin-3表达水平不断降低,OPN、ICAM-1水平表达不断升高(P<0.05)。受试者工作特征(ROC)曲线分析Fibulin-3、OPN、ICAM-1预测腹主动脉瘤的曲线下面积(area under the curve,AUC)分别为0.942、0.616、0.868、0.869。结论Fibulin-3在腹主动脉瘤患者中低表达,OPN、ICAM-1在腹主动脉瘤患者中高表达,Fibulin-3低表达与OPN、ICAM-1高表达是腹主动脉瘤患者发病的风险预测因子。展开更多
基金Supported by the Athens University and the Greek Ministry of Health and Welfare
文摘AIM： To investigate the prognostic significance of PECAM-1, ICAM-3 and HLA-DR antigens in patients with primary non-Hodgkin＇s gastric lymphoma. METHODS： We immunohistochemically studied PECAM-1, ICAM-3 and HLA-DR antigen expression in 36 B-cell MALT-type primary gastric lymphoma patients. Ten non-malignant and ten healthy gastric tissue specimens were used as controls. Clinicopathological and survival data were correlated with the staining results. RESULTS： HLA-DR antigen expression was detected in 33 gastric lymphoma patients （91.7%） and 6 nonmalignant patients （54.5%）. PECAM-1 stained tumor cells of 10 patients （27.8%）, endothelial cells of 9 patients （25%） and inflammatory infiltrate of 4 patients （40%） with benign gastric disease. ICAM-3 expression was observed on the tumor cells of 17 patients （47.2%）, while 5 non-malignant patients （50%） were stained positive as well. None of the healthy controls was stained for any of the genes studied. In the multivariate analysis, HLA-DR antigen and PECAM-1 were proved to be statistically significant independent prognostic factors associated with a favourable and an unfavourable prognosis respectively （P= 0.009 and P= 0.003）. In the univariate analysis, PECAM-1（＋）/ICAM-3（-） and HLA-DR（-）/ICAM-3（-） patients exhibited a significantly decreased overall survival compared to those with the exactly opposite gene expression patterns （P=0.0041 and P= 0.0091, respectively）. Those patients who were HLA-DR（＋ ）/ICAM-3（＋ ）/PECAM-I（-） （n = 8） had a significantly higher survival rate compared to the rest of the group （n = 24） （P= 0.0289）. CONCLUSION： PECAM-1, ICAM-3 and HLA-DR are representative markers of tumor expansion potential and host immune surveillance respectively. Their combined use may help us to identify high-risk patients who could benefit from more aggressive therapeutic protocols.
文摘Although the effectiveness of methotrexate (MTX) in the treatment of psoriasis is very well established, the mechanism of action is poorly understood. It was suggested that the therapeutic effect of MTX in psoriasis might be mediated by inhibition of adhesion molecule expression. The aim of our study was to investigate the different effects of MTX treatment on cell proliferation, inflammatory infiltrate, adhesion molecules, and angiogenesis in psoriasis, and to clarify the mechanism by which MTX exerts its therapeutic effects. Clinical response, the morpho- phenot- ypic changes, epidermal thickness, and mitosis count were analyzed and the expression of CD31 and ICAM- 3, proliferative markers such as Ki- 67, PCNA, were evaluated by immunohistochemical techniques in lesional psoriatic epidermis, before and after the treatment with MTX in ten patients. In posttreatment biopsies a decrease in the degree of epidermal hyperplasia and a significant reduction in the severity of the inflammatory infiltrate (P< 0.05) were observed. In addition,CD31 and ICAM- 3 expression was significantly decreased ondermal cellular infiltrate, (respectively; P< 0.05,P< 0.01). Ki67 and PCNA expression were suppressed concurrently in about 90% of cases (P< 0.01). We suggest that MTX may have an inhibitory effect on an initial integral component of the pathways that lead to psoriasis. Immunopharmacologic intervention in adhesion event has the potential to improve psoriasis. Inhibition of revascularization may be another mechanism of actionof MTX.
文摘目的研究腹主动脉瘤患者血清Fibulin-3、骨桥蛋白(OPN)、ICAM-1的表达及意义,分析血清Fibulin-3、OPN、ICAM-1与腹主动脉瘤的关系。方法选取收治的50例腹主动脉瘤患者为AAA组,同时选取同时期体检的50例健康人为对照组。采用酶联免疫吸附法检测Fibulin-3、OPN水平,采用酶标仪双抗体夹心法测定ICAM-1水平。结果AAA组血清Fibulin-3表达水平低于对照组,OPN、ICAM-1表达水平高于对照组,差异有统计学意义(P<0.05)。随着腹主动脉瘤不断增大Fibulin-3表达水平不断降低,OPN、ICAM-1水平表达不断升高(P<0.05)。受试者工作特征(ROC)曲线分析Fibulin-3、OPN、ICAM-1预测腹主动脉瘤的曲线下面积(area under the curve,AUC)分别为0.942、0.616、0.868、0.869。结论Fibulin-3在腹主动脉瘤患者中低表达,OPN、ICAM-1在腹主动脉瘤患者中高表达,Fibulin-3低表达与OPN、ICAM-1高表达是腹主动脉瘤患者发病的风险预测因子。
