细胞间黏附分子-2与血小板内皮细胞黏附分子-1在心脏移植慢性排斥中的表达及意义

细胞间黏附分子-2（ICAM-2）及血小板内皮细胞黏附分子-1（PECAM-1）与同种异体器官移植排斥反应联系密切，但与慢性排斥反应（CR）的关系还不十分明确。我们采用供者脾细胞（SPC）和环磷酰胺（CP）预处理移植受者，诱导受者对移植物的免疫耐受，     

大鼠异体肢体移植术后急性排斥反应阶段血管内皮细胞ICAM-1表达的动态变化

目的 研究大鼠异体肢体移植术后急性排斥反应阶段,移植肢体血管内皮细胞细胞间黏附分子-1(intercellular adhesion molecule-1,ICAM-1)动态变化及环孢素A(cyclosporine A,CsA)抗免疫排斥的作用.方法 建立大鼠肢体移植动物模型,随机分为对照组(Wistar大鼠→Wistar大鼠)、排斥组(SD大鼠→ Wistar大鼠)和CsA治疗组(SD大鼠→Wistar大鼠),术后1、4、7 d获取移植肢体股动脉行病理学观察,采用免疫组化法检测移植肢体血管ICAM-1表达的变化.结果 对照组供体移植肢体股动脉血管内皮细胞仅出现轻微肿胀与ICAM-1表达微弱;排斥组血管内皮细胞肿胀明显,淋巴细胞大量浸润,ICAM-1的表达强度和数量明显增加;CsA治疗组移植肢体血管内皮细胞仅有少量淋巴细胞浸润,ICAM-1表达较弱.结论 大鼠异体肢体移植术后急性排斥反应阶段,血管内皮细胞ICAM-1表达水平与排斥反应的发生和发展有关,CsA可降低移植肢体血管内皮细胞ICAM-1表达,抑制复合组织移植术后急性排斥反应.     

大鼠异体肢体移植术后急性排斥反应阶段血管内皮细胞ICAM-1表达的动态变化

Objective To investigate the dynamic changes of intercellular adhesion molecule-1 (ICAM-1) expression in endothelial cells (EC) during hindlimb allograft acute rejection in rats and the inhibitory effect of cyclospofine A (CsA) on the acute rejection. Methods The rat model of hindlimb allograft was developed. The rats were randomly divided into following groups: control group (Wistar→Wistar), rejection group ( Sprague-Dawley→Wistar) and CsA-treated group (Sprague-Dawley→Wistar). At postoperative day 1, day 4 and day 7samples of the femoral artery from the allograft limb were harvested to observe the pathologic changes. ICAM-1 expression in EC was quantified using immunohistochemical assay. Results Slight swelling and weak ICAM-1expression of EC were observed in the control group. In the rejection groups, obvious EC swelling and massive lymphocyte infiltration were seen. ICAM-1 expression in EC was significantly stronger and elevated. In CsA-group only mild infiltration of lymphocytes was seen and ICAM-I expression in EC was also much weaker.Conclusion During rat hindlimb allograft acute rejection the expression of ICAM-1 in EC was closely related to the occurrence and development of acute rejection. CsA could reduce the expression of ICAM-1 in EC and hence inhibit acute rejection of composite allograft.     

大鼠异体肢体移植术后急性排斥反应阶段血管内皮细胞ICAM-1表达的动态变化

Objective To investigate the dynamic changes of intercellular adhesion molecule-1 (ICAM-1) expression in endothelial cells (EC) during hindlimb allograft acute rejection in rats and the inhibitory effect of cyclospofine A (CsA) on the acute rejection. Methods The rat model of hindlimb allograft was developed. The rats were randomly divided into following groups: control group (Wistar→Wistar), rejection group ( Sprague-Dawley→Wistar) and CsA-treated group (Sprague-Dawley→Wistar). At postoperative day 1, day 4 and day 7samples of the femoral artery from the allograft limb were harvested to observe the pathologic changes. ICAM-1 expression in EC was quantified using immunohistochemical assay. Results Slight swelling and weak ICAM-1expression of EC were observed in the control group. In the rejection groups, obvious EC swelling and massive lymphocyte infiltration were seen. ICAM-1 expression in EC was significantly stronger and elevated. In CsA-group only mild infiltration of lymphocytes was seen and ICAM-I expression in EC was also much weaker.Conclusion During rat hindlimb allograft acute rejection the expression of ICAM-1 in EC was closely related to the occurrence and development of acute rejection. CsA could reduce the expression of ICAM-1 in EC and hence inhibit acute rejection of composite allograft.     

大鼠异体肢体移植术后急性排斥反应阶段血管内皮细胞ICAM-1表达的动态变化

Objective To investigate the dynamic changes of intercellular adhesion molecule-1 (ICAM-1) expression in endothelial cells (EC) during hindlimb allograft acute rejection in rats and the inhibitory effect of cyclospofine A (CsA) on the acute rejection. Methods The rat model of hindlimb allograft was developed. The rats were randomly divided into following groups: control group (Wistar→Wistar), rejection group ( Sprague-Dawley→Wistar) and CsA-treated group (Sprague-Dawley→Wistar). At postoperative day 1, day 4 and day 7samples of the femoral artery from the allograft limb were harvested to observe the pathologic changes. ICAM-1 expression in EC was quantified using immunohistochemical assay. Results Slight swelling and weak ICAM-1expression of EC were observed in the control group. In the rejection groups, obvious EC swelling and massive lymphocyte infiltration were seen. ICAM-1 expression in EC was significantly stronger and elevated. In CsA-group only mild infiltration of lymphocytes was seen and ICAM-I expression in EC was also much weaker.Conclusion During rat hindlimb allograft acute rejection the expression of ICAM-1 in EC was closely related to the occurrence and development of acute rejection. CsA could reduce the expression of ICAM-1 in EC and hence inhibit acute rejection of composite allograft.     

大鼠异体肢体移植术后急性排斥反应阶段血管内皮细胞ICAM-1表达的动态变化

Objective To investigate the dynamic changes of intercellular adhesion molecule-1 (ICAM-1) expression in endothelial cells (EC) during hindlimb allograft acute rejection in rats and the inhibitory effect of cyclospofine A (CsA) on the acute rejection. Methods The rat model of hindlimb allograft was developed. The rats were randomly divided into following groups: control group (Wistar→Wistar), rejection group ( Sprague-Dawley→Wistar) and CsA-treated group (Sprague-Dawley→Wistar). At postoperative day 1, day 4 and day 7samples of the femoral artery from the allograft limb were harvested to observe the pathologic changes. ICAM-1 expression in EC was quantified using immunohistochemical assay. Results Slight swelling and weak ICAM-1expression of EC were observed in the control group. In the rejection groups, obvious EC swelling and massive lymphocyte infiltration were seen. ICAM-1 expression in EC was significantly stronger and elevated. In CsA-group only mild infiltration of lymphocytes was seen and ICAM-I expression in EC was also much weaker.Conclusion During rat hindlimb allograft acute rejection the expression of ICAM-1 in EC was closely related to the occurrence and development of acute rejection. CsA could reduce the expression of ICAM-1 in EC and hence inhibit acute rejection of composite allograft.     

大鼠异体肢体移植术后急性排斥反应阶段血管内皮细胞ICAM-1表达的动态变化

Objective To investigate the dynamic changes of intercellular adhesion molecule-1 (ICAM-1) expression in endothelial cells (EC) during hindlimb allograft acute rejection in rats and the inhibitory effect of cyclospofine A (CsA) on the acute rejection. Methods The rat model of hindlimb allograft was developed. The rats were randomly divided into following groups: control group (Wistar→Wistar), rejection group ( Sprague-Dawley→Wistar) and CsA-treated group (Sprague-Dawley→Wistar). At postoperative day 1, day 4 and day 7samples of the femoral artery from the allograft limb were harvested to observe the pathologic changes. ICAM-1 expression in EC was quantified using immunohistochemical assay. Results Slight swelling and weak ICAM-1expression of EC were observed in the control group. In the rejection groups, obvious EC swelling and massive lymphocyte infiltration were seen. ICAM-1 expression in EC was significantly stronger and elevated. In CsA-group only mild infiltration of lymphocytes was seen and ICAM-I expression in EC was also much weaker.Conclusion During rat hindlimb allograft acute rejection the expression of ICAM-1 in EC was closely related to the occurrence and development of acute rejection. CsA could reduce the expression of ICAM-1 in EC and hence inhibit acute rejection of composite allograft.     

大鼠异体肢体移植术后急性排斥反应阶段血管内皮细胞ICAM-1表达的动态变化

Objective To investigate the dynamic changes of intercellular adhesion molecule-1 (ICAM-1) expression in endothelial cells (EC) during hindlimb allograft acute rejection in rats and the inhibitory effect of cyclospofine A (CsA) on the acute rejection. Methods The rat model of hindlimb allograft was developed. The rats were randomly divided into following groups: control group (Wistar→Wistar), rejection group ( Sprague-Dawley→Wistar) and CsA-treated group (Sprague-Dawley→Wistar). At postoperative day 1, day 4 and day 7samples of the femoral artery from the allograft limb were harvested to observe the pathologic changes. ICAM-1 expression in EC was quantified using immunohistochemical assay. Results Slight swelling and weak ICAM-1expression of EC were observed in the control group. In the rejection groups, obvious EC swelling and massive lymphocyte infiltration were seen. ICAM-1 expression in EC was significantly stronger and elevated. In CsA-group only mild infiltration of lymphocytes was seen and ICAM-I expression in EC was also much weaker.Conclusion During rat hindlimb allograft acute rejection the expression of ICAM-1 in EC was closely related to the occurrence and development of acute rejection. CsA could reduce the expression of ICAM-1 in EC and hence inhibit acute rejection of composite allograft.     

大鼠异体肢体移植术后急性排斥反应阶段血管内皮细胞ICAM-1表达的动态变化

Objective To investigate the dynamic changes of intercellular adhesion molecule-1 (ICAM-1) expression in endothelial cells (EC) during hindlimb allograft acute rejection in rats and the inhibitory effect of cyclospofine A (CsA) on the acute rejection. Methods The rat model of hindlimb allograft was developed. The rats were randomly divided into following groups: control group (Wistar→Wistar), rejection group ( Sprague-Dawley→Wistar) and CsA-treated group (Sprague-Dawley→Wistar). At postoperative day 1, day 4 and day 7samples of the femoral artery from the allograft limb were harvested to observe the pathologic changes. ICAM-1 expression in EC was quantified using immunohistochemical assay. Results Slight swelling and weak ICAM-1expression of EC were observed in the control group. In the rejection groups, obvious EC swelling and massive lymphocyte infiltration were seen. ICAM-1 expression in EC was significantly stronger and elevated. In CsA-group only mild infiltration of lymphocytes was seen and ICAM-I expression in EC was also much weaker.Conclusion During rat hindlimb allograft acute rejection the expression of ICAM-1 in EC was closely related to the occurrence and development of acute rejection. CsA could reduce the expression of ICAM-1 in EC and hence inhibit acute rejection of composite allograft.     

大鼠异体肢体移植术后急性排斥反应阶段血管内皮细胞ICAM-1表达的动态变化

Objective To investigate the dynamic changes of intercellular adhesion molecule-1 (ICAM-1) expression in endothelial cells (EC) during hindlimb allograft acute rejection in rats and the inhibitory effect of cyclospofine A (CsA) on the acute rejection. Methods The rat model of hindlimb allograft was developed. The rats were randomly divided into following groups: control group (Wistar→Wistar), rejection group ( Sprague-Dawley→Wistar) and CsA-treated group (Sprague-Dawley→Wistar). At postoperative day 1, day 4 and day 7samples of the femoral artery from the allograft limb were harvested to observe the pathologic changes. ICAM-1 expression in EC was quantified using immunohistochemical assay. Results Slight swelling and weak ICAM-1expression of EC were observed in the control group. In the rejection groups, obvious EC swelling and massive lymphocyte infiltration were seen. ICAM-1 expression in EC was significantly stronger and elevated. In CsA-group only mild infiltration of lymphocytes was seen and ICAM-I expression in EC was also much weaker.Conclusion During rat hindlimb allograft acute rejection the expression of ICAM-1 in EC was closely related to the occurrence and development of acute rejection. CsA could reduce the expression of ICAM-1 in EC and hence inhibit acute rejection of composite allograft.     

大鼠异体肢体移植术后急性排斥反应阶段血管内皮细胞ICAM-1表达的动态变化

Objective To investigate the dynamic changes of intercellular adhesion molecule-1 (ICAM-1) expression in endothelial cells (EC) during hindlimb allograft acute rejection in rats and the inhibitory effect of cyclospofine A (CsA) on the acute rejection. Methods The rat model of hindlimb allograft was developed. The rats were randomly divided into following groups: control group (Wistar→Wistar), rejection group ( Sprague-Dawley→Wistar) and CsA-treated group (Sprague-Dawley→Wistar). At postoperative day 1, day 4 and day 7samples of the femoral artery from the allograft limb were harvested to observe the pathologic changes. ICAM-1 expression in EC was quantified using immunohistochemical assay. Results Slight swelling and weak ICAM-1expression of EC were observed in the control group. In the rejection groups, obvious EC swelling and massive lymphocyte infiltration were seen. ICAM-1 expression in EC was significantly stronger and elevated. In CsA-group only mild infiltration of lymphocytes was seen and ICAM-I expression in EC was also much weaker.Conclusion During rat hindlimb allograft acute rejection the expression of ICAM-1 in EC was closely related to the occurrence and development of acute rejection. CsA could reduce the expression of ICAM-1 in EC and hence inhibit acute rejection of composite allograft.     

大鼠异体肢体移植术后急性排斥反应阶段血管内皮细胞ICAM-1表达的动态变化

Objective To investigate the dynamic changes of intercellular adhesion molecule-1 (ICAM-1) expression in endothelial cells (EC) during hindlimb allograft acute rejection in rats and the inhibitory effect of cyclospofine A (CsA) on the acute rejection. Methods The rat model of hindlimb allograft was developed. The rats were randomly divided into following groups: control group (Wistar→Wistar), rejection group ( Sprague-Dawley→Wistar) and CsA-treated group (Sprague-Dawley→Wistar). At postoperative day 1, day 4 and day 7samples of the femoral artery from the allograft limb were harvested to observe the pathologic changes. ICAM-1 expression in EC was quantified using immunohistochemical assay. Results Slight swelling and weak ICAM-1expression of EC were observed in the control group. In the rejection groups, obvious EC swelling and massive lymphocyte infiltration were seen. ICAM-1 expression in EC was significantly stronger and elevated. In CsA-group only mild infiltration of lymphocytes was seen and ICAM-I expression in EC was also much weaker.Conclusion During rat hindlimb allograft acute rejection the expression of ICAM-1 in EC was closely related to the occurrence and development of acute rejection. CsA could reduce the expression of ICAM-1 in EC and hence inhibit acute rejection of composite allograft.     

细胞间黏附分子-1在移植肾缺血再灌注损伤中的作用

本文主要阐述了细胞问黏附分子-1的生物学特性,在肾移植缺血再灌注损伤中作用,以及肾缺血再灌注损伤时的抗细胞黏附治疗.     

核因子κB在烧伤血清诱导内皮细胞细胞间黏附分子1表达中的作用

目的探讨核因子κB(NF-κB)在烧伤血清诱导内皮细胞(EC)分泌细胞间黏附分子(ICAM)1中的作用。方法人脐静脉内皮细胞(HUVEC)培养后,分别用正常人血清(对照组)、烧伤患者血清(烧伤血清组)、吡咯烷二硫代氨基甲酸盐(PDTC)+烧伤患者血清(PDTC组)刺激。于刺激0.5、1.0、2.0、4．0 b时采用电泳迁移率分析法测定HUVEC NF-κB的活性;流式细胞术检测刺激3．0、6.0、12．0、24．0 h时HUVEC膜表面ICAM-1的表达。结果刺激后烧伤血清组、PDTC组细胞NF-κB活性均明显高于对照组(P<0．01),1．0 h时达峰值[(21.03±4．87)、(7.44±0．60)×104积分灰度值],以后逐渐降低;PDTC组明显低于烧伤血清组(P<0.01)。刺激后烧伤血清组、PDTC组ICAM-1的表达均增加,刺激12．0 h吋达峰值(平均荧光密度各为327±37、142±31),与对照组比较,差异有统计学意义(P<0．01);PDTC组刺激12．0、24．0 h时低于烧伤血清组(P<0．01)。结论烧伤血清通过活化NF-κB,从而启动EC对黏附分子的合成和释放,提示NF-κB在烧伤血清诱导EC分泌黏附分子过程中起重要作用。     

细胞间黏附分子-1在移植肾缺血再灌注损伤中的作用

本文主要阐述了细胞间黏附分子-1的生物学特性,在肾移植缺血再灌注损伤中作用,以及肾缺血再灌注损伤时的抗细胞黏附治疗。     

细胞间粘附分子-1和血管细胞粘附分子-1在慢性排斥反应中的表达

为了探讨移植肾慢性排斥反应的发病机制，应用免疫组化技术（ＡＢＣ法）对１６例肾移植术后发生慢性排斥反应患者的移植肾组织及５例正常肾组织行细胞间粘附分子－１（ＩＣＡＭ－１）、血管细胞粘附分子－１（ＶＣＡＭ－１）染色及ＨＥ染色。结果表明ＩＣＡＭ－１、ＶＣＡＭ－１在正常肾脏和慢性排斥反应移植肾脏上的表达分布不同；结果提示，它们在移植肾慢性排斥反应的发生、发展过程中起重要作用     

细胞间黏附分子-1在肝癌发生发展中的表达及作用

细胞间黏附分子-1与肝癌的发生、发展和转移过程密切相关.多种炎症因子及刺激通过核因子-κB信号通路对细胞间黏附分子-1的表达产生影响.在炎症阶段、肝硬化期和肿瘤期,细胞间黏附分子-1通过不同表达对细胞产生不同作用,促进肿瘤的发生与转移.细胞间黏附分子-1对AFP阴性或可疑阳性的肝细胞癌有早期诊断意义,是评估肝癌转移及预后的生物标记.许多治疗肝癌的新方法基于在不同层面对细胞间黏附分子-1的影响进而产生抗肿瘤作用.     

血管内皮细胞和移植排斥反应

排斥反应是影响移植物存活率的主要因素之一,而血管内皮细胞是血液与组织间的重要屏障,是器官移植后供、受者细胞间最早接触的场所,是最早被免疫系统识别,且具备独特的生物学功能,在移植排斥反应中有重要作用。本文对血管内皮细胞在移植排斥反应中的作用做一综述。一、血管内皮细胞的一般特性血管内皮细胞(EC)为衬贴于心血管内腔面的单层扁平细胞。心脏和大多数血管的EC为连续内皮,毛细血管的EC则因功能不同而形态多样。EC在血液和组织液间有广泛的联系和物质交换,不仅具有选择性通透性、抗血栓性、血管紧张调节、毛细血管形成、产生细…     

霉酚酸酯对糖尿病大鼠肾组织单核细胞趋化蛋白-1与细胞间黏附分子-1表达的影响

糖尿病肾病(DN)肾内单核细胞趋化蛋白-1(MCP-1)、细胞间黏附分子-1(ICAM-1)表达上调,单核/巨噬细胞浸润等炎症机制越来越受到重视犤1犦。本研究探讨霉酚酸酯(MMF)对糖尿病(DM)肾组织MCP-1、ED-1、ICAM-1表达的影响,旨在为DN的抗炎治疗提供实验依据。一、材料和方法1.糖尿病模型建立及分组:30只雄性昆明种SD大鼠(安医大实验动物中心提供),行右肾切除术和腹腔注射单剂量STZ65mg/kg。随机分3组:对照组(C);模型组(DM);MMF给药组(DM MMF),每组10只。MMF10mg·kg-1·d-1灌胃。整个实验期间不用胰岛素。2.指标检测:术后8周末测尿…     

血清白细胞介素-6和细胞黏附分子-1监测在肾移植急性排斥诊断中的意义

白细胞介素 (IL) 6属于促炎症性细胞因子 ,广泛参与机体的免疫反应[1 3 ] ,细胞黏附分子 (ICAM ) 1是白细胞功能相关抗原的配体 ,为细胞膜糖蛋白 ,属于免疫球蛋白超家族 ,此二类因子在免疫应答和器官移植免疫排斥反应中起重要作用[4 6] 。我们通过监测 40例肾脏移植术后患者血清IL 6和ICAM 1水平的改变 ,探讨此二类因子在肾移植急性排斥反应监测中的意义。一、材料与方法1.材料 :2 0 0 2年 1月～ 2 0 0 2年 12月我院行肾移植 40例 ,其中男 2 5例 ,女15例 ,平均年龄 3 5 .9岁。术后常规服用三联免疫抑制剂 :环孢素 (CsA)或普乐可复 (…