早期介入和应用血小板膜糖蛋白Ⅱb／Ⅲa受体抑制剂：保护心肌

急性冠状动脉综合征(acute coronary syndromes,ACS)治疗中最重要的进展是明确了血小板在ACS发病机制中的作用.斑块破裂和血管壁损伤后可引起血小板激活和聚集,在经皮冠状动脉内介入(percutaneous coro-naryinterventions,PCI)过程中也可发生.随着对ACS发病机制理解的加深,研制了印制血小板聚集的强效药物:血小板膜糖蛋白(glycoprotein,GP)Ⅱb/Ⅲa受体抑制,常用的有阿昔单抗、安普利泰和替罗非班.     

层粘连蛋白受体的研究进展

层粘连蛋白受体的研究进展苏玲，周柔丽层粘连蛋白受体（ｌａｍｉｎｉｎｒｅｃｅｐｔｏｒ，ＬＮ－Ｒ）是存在于细胞表面的跨膜糖蛋白，它广泛存在于肿瘤细胞及某些附着于基膜的正常细胞表面。由于ＬＮ－Ｒ与基膜中的层粘连蛋白（ｌａｍｉｎｉｎ，ＬＮ）的相互作用与恶性肿...     

肾透明细胞癌中Dysadherin的表达7／it5床病理学意义

Dysadherin是近来被证实的与肿瘤转移有关的一种细胞膜糖蛋白，在细胞间黏附机制中起关键作用，如抗细胞黏附、下调E-cadherin的表达和促进肿瘤转移。肾透明细胞癌（RCCC）是最常见的肾细胞癌亚型，与其他亚型相比．RCCC预后更差，寻找与其预后有关的因素十分关键。本研究通过检测Dysadherin和E-cadherin在RCCC标本和正常肾组织中的表达情况，     

苏州地区汉族人血小板糖蛋白Ⅲa基因TaqI多态性与脑梗死的相关性研究

目的　研究苏州地区汉族人血小板糖蛋白Ⅲa基因TaqⅠ多态性与脑梗死发生的相关性。 方法　应用PCR技术结合TaqⅠ酶切分析、聚丙烯酰胺凝胶电泳 ,研究了苏州地区汉族正常人与脑梗死患者血小板糖蛋白Ⅲa基因TaqⅠ多态性特点。 结果　正常对照组TaqⅠ等位基因的频率分别为C 5 3.8%、A 4 6 .2 %。脑梗死组TaqⅠ等位基因频率分别为C 5 0 .6 %、A 4 9.4 %。脑梗死组和对照组之间无显著性差异 (P >0 .0 5 )。结论　苏州地区汉族人血小板糖蛋白Ⅲa基因TaqⅠ多态性与脑梗死发生无关。     

RNA干扰抑制马桑内酯诱导的大鼠星形胶质细胞Mdr1基因的表达

目的观察RNA干扰对培养的大鼠星形胶质细胞逆转P-糖蛋白介导的多药耐药现象的影响。方法用短发夹RNA表达载体p-SIREN shuttle质粒转染马桑内酯诱导表达P-糖蛋白的星形胶质细胞，荧光定量聚合酶链反应（PCR）测定Mdr1 mRNA的表达量，免疫细胞化学方法检测P-糖蛋白表达的变化，流式细胞术检测转染前后细胞罗丹明蓄积外排的变化。结果建立表达P-糖蛋白的星形胶质细胞模型，有效地将p-SIREN shuttle质粒转染该细胞模型。转染后实验组细胞Mdr1 mRNA水平被抑制达67．70％，P-糖蛋白表达明显低于对照组（P〈0．01），实验组P-糖蛋白作用底物罗丹明的细胞外泵出率（23．08％）明显低于对照组（78．35％，P〈0．01）。结论RNA干扰对马桑内酯诱导的星形胶质细胞Mdr1表达有明显抑制作用，并且在很大程度上逆转多药耐药蛋白的耐药作用。     

抗β2糖蛋白1抗体与习惯性流产

目的 探讨抗β2 GP1抗体与习惯性流产间的关系。方法 选取122例有习惯性流产史未妊娠妇女为流产组，选取60名未妊娠正常生育育龄妇女为正常对照组，用酶联免疫法检测两组血清中抗β2 GP1抗体。结果 122例不明原因习惯性流产史的患者中，抗β2 GP1IgA、IgG、IgM型抗体阳性率分别为13．1％、9．0％和15．6％。这三型自身抗体阳性率均明显高于正常对照组，差别有显著性(P分别为P=0．009、P=0．011、P=0．003)。结论 对不明原因习惯性流产史的患者作抗β2 GP1抗体检测，将有助于病因的诊断。     

Wnt pathway in the formation of ischemic brain injury*★ Interventional pathway of basic fibroblast growth factor

BACKGROUND: Basic fibroblast growth factor (bFGF) can reduce neuronal apoptosis following ischemia/reperfusion (I/R) injury. Mechanism of the phenomenon should be elucidated. OBJECTIVE: The goal of this study was to observe the effect of bFGF on the expressions of Dickkopf-1(DKK-1) and β-catenin in the Wnt pathway in hippocampal tissue of rats following brain I/R injury, in order to investigate the role of Wnt pathway in the formation of ischemic brain injury. DESIGN: Randomized controlled experiment. SETTING: Shenyang Medical College. MATERIALS: Thirty healthy 3 months old male Wistar rats, weighing 300–350 g, were provided by the Experimental Animal Center of Shenyang Medical College. Thirty rats were randomized into sham-operation group, model group and treatment group. Goat anti-rat monoclonal antibody β-catenin was purchased from SANTA CRUZ Company. BFGF was developed by Beijing SL Pharmaceutical Co., Ltd. METHODS: This experiment was carried out in the Shenyang Medical College between November 2005 and May 2006. ①Focal brain I/R by suture-occluded method was modeled in rats in the treatment group and model group. Their middle cerebral artery was occluded 1 hour and reperfused for 24 hours. While in the sham-operation group, only the right common carotid artery and external carotid artery of rats were occluded for 90 minutes. ② The rats in the treatment group were intraperitoneally injected with 10 μg/kg bFGF, and those in the other groups were intraperitoneally injected with the same amount of saline. MAIN OUTCOME MEASURES: Following I/R 48 hours, the expressions of β-catenin and Dickkopf-1 mRNA in the neurons of hippocampal CA1 region by immunohistochemical SABC and RT-PCR. RESULTS: Following I/R 48 hours, the expressions of β-catenin and Dickkopf-1 mRNA in the neurons of hippocampal CA1 region was evaluated by means of immunohistochemical SABC and RT-PCR. ① Expression of DKK-1 mRNA in the sham-operation group was at low level, it was significantly higher in the model group compared to the sham-operation group; Expression of DKK-1 mRNA in the treatment group was significantly lower than that in the model group. ② Expression of β-catenin in the cerebral cortex and hippocampal cytoplasm of rats: The mean gray scale of β-catenin of model group was significantly lower than that of sham-operation group (74.27±2.65 vs. 111.36±5.39，P < 0.05); The mean gray scale of β-catenin of treatment group was significantly higher than that of model group (86.18±7.41 vs. 74.27±2.65, P < 0.05). CONCLUSION: bFGF may influence Wnt pathway by participating in the regulation of DKK-1 mRNA and β-catenin expressions, and thereby protect neurons.