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
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。
