衰老红细胞与带3蛋白

循环系统里的成熟红细胞在其生命过程里经历着氧化性衰老，相应细胞组份出现血红蛋白变性、膜蛋白交联、带3蛋白聚集以及带3蛋白降解等多种修饰。这些修饰作为红细胞膜上的衰老信号参与构成衰老细胞抗原，由此启动与IgG自身抗体(主要为带3蛋白抗体)的结合以及补体的沉淀，最终是免疫吞噬系统对异常细胞的识别清除．现就衰老红细胞与带3蛋白的关系作一综述。     

A cross-reactive idiotype in scleroderma

Autoantibodies to centromere proteins (anti-CENPs) and to topoisomerase-I are highly specific for scleroderma. Unlike most autoantibodies in other diseases, these autoantibodies are mutually exclusive. We have analysed the idiotypes (Ids) expressed by anti-CENP-B, antitopoisomerase-I, and IgGs from 20 scleroderma patients. Rabbit anti-Ids were prepared to antitopoisomerase-I from two scleroderma patients, and to anti-CENP-B from four patients. These six anti-Ids were used to study the purified autoantibodies from 20 scleroderma patients: four antitopoisomerase-I, 10 anti-CENP-B, and six purified IgG from scleroderma patients who were negative for both autoantibodies. In addition, we studied sera from 40 normal autoantibody-negative controls, and sera and purified immunoglobulins from 17 systemic lupus erythematosus (SLE) patients containing high titres of anti-double-stranded DNA, and/or autoantibodies to extractable nuclear antigens (ENA). Using direct binding, and competitive inhibition ELISAs and immunoblots, we identified an Id present in the heavy chains of all the affinity-purified antitopoisomerase-I, and anti-CENP-B. Interestingly, this Id was also present in the immunoglobulins of the scleroderma patients who had neither of the two autoantibodies. By contrast, cross-reactive Id-EM was not found in the sera or immunoglobulins from 17 SLE patients, or in the sera from 40 normal subjects. Several samples from two patients showed that this cross-reactive Id-EM was stable over time. The scleroderma disease-specific autoantibodies may be identified through a common structural feature at the variable region of the heavy chain: cross-reactive Id-EM.     

泪腺肿瘤中P53蛋白表达的意义

目的了解P53基因在泪腺肿瘤的表达及其临床病理学意义。方法应用免疫组织化学ABC法检测57例泪腺上皮性肿瘤患者和10例正常人泪腺组织中P53蛋白的表达情况，并与病理分级、复发相联系。结果10例正常人泪腺组织中P53表达全部为阴性；恶性肿瘤患者的表达率为48．6％，良性肿瘤中P53达率为18％，二者相比有显著性差异（P＜0．025）；复发患者阳性率为76．9％，明显高于未复发患为31．8％（P＝0．015）。结论P53基因参与了泪腺肿瘤的发生发展并与肿瘤的分化和复发有关。     

氢化可的松对大鼠脊髓星形胶质细胞体外分泌TNF-α及释放EAAs的影响

目的观察氢化可的松对体外培养的大鼠脊髓星形胶质细胞分泌TNF-α及释放EAAs的影响.方法体外纯化培养大鼠脊髓星形胶质细胞,分为正常对照(C组),LPS终浓度为0.1 mg/L(L1组);LPS终浓度为1 mg/L(L2组);LPS终浓度为1 mg/L及氢化可的松终浓度为10-6mol/L(HC1组),LPS终浓度为1mg/L及氢化可的松终浓度为10-5mol/L(HC2组).分别孵育0,1和2h后取细胞培养液,应用酶联免疫分析方法(ELASA)检测上清液中TNF-α的浓度;用高效液相色谱仪测定各组培养细胞在0,1和2 h时谷氨酸(Glu)、天门冬氨酸(Asp)的释放量.结果在1,2 h时,与C组相比,L1、L2组TNF-α分泌量,Glu,Asp释放量均显著升高(P＜0.05);与L2组比较,HC1,HC2组的TNF-α分泌量降低(P＞0.05和P＜0.05),HC1,HC2组的Glu,Asp释放量降低(P＜0.05).结论氢化可的松在体外抑制脊髓灰质星形胶质细胞分泌TNF-α及释放EAAs,抑制程度与浓度相关.     

2 132 例不同人群血清中SARS-CoV抗体水平调查

目的：探讨SARS-CoV(IgG)抗体检测辅助诊断非典型肺炎的临床应用价值。方法：采用ELISA方法及蛋白芯片法对2132例不同人群的血液标本检测SARS-CoV(IgG)抗体，分析SAILS康复者与其它疾病患者和正常人群抗体水平的差异。结果：用ELISA方法测定SARS康复者、肾病、恶性肿瘤、肺部疾病和糖尿病患者、其它疾病的SARS-CoV(IgG)抗体阳性率分别为75．6％(118／156)、29．3％(22／75)、22．3％(19／85)、22．7％(10／44)、13．6％(8／59)，500例健康查体人员全部为阴性，500例密切接触人员也为阴性。蛋白芯片方法测定SARS康复者的抗体阳性率为86％，对62例ELISA方法阳性的非SARS患者测定，仅发现4例阳性。结论：SARS-CoV(IgG)抗体可辅助回顾性诊断是否有SARS-CoV的感染。与ELISA方法相比，蛋白芯片方法具有更高的特异性和灵敏度。     

慢性非细菌性前列腺炎/慢性盆腔疼痛综合征患者前列腺液中炎症因子差异表达的临床意义

Objective To investigate the role of inflammatory cytokines in the pathogenesis of chronic non-bacterial prostatitis/chronic pelvic pain syndrome (CAP/CPPS) patients. Methods The 38 cases with CAP/CPPS patients (18 cases of CAP and 20 cases of CPPS) and 20 cases of healthy controls were selected. The differential expressions of 40 kinds of inflammatory cytokines were detec-ted by antibody arrays in prostate fluid. Results The inflammatory cytokines which increased more than 1.5 times expression have been found. There were seven kinds in CAP including monocyte che-moattractant protein (MCP)-1, solution tumor necrosis factor receptor Ⅱ(s TNF R Ⅱ), platelet-de-rived growth faetor-BB (PDGF-BB), interleukin (IL)-β, IL-11、IL-6、MCP-2 and five kinds in CPPS groups including MCP-1、PDGF-BB、MCP-2、s TNF R Ⅱ、It-11 respectively, compared with healthy control group. The cluster analysis results showed that protein expression of Monocyte chemoattrac-tant protein 1 (MCP-1)and platelet-derived growth factor BB (PDGF-BB) were significantly increased in CAP (3.47 and 2.07 times) and CPPS (2.25 and 2.19 times) compared with healthy control group and were the final polymerization of inflammatory cytokines. The protein expression of interleukin 1 β (IL-1 β), MCP-1 and soluble tumor necrosis factor Ⅱ (s TNF R Ⅱ) in CAP group was increased more than 1.85,1.55,1.67 times compared with CPPS group. Conclusions Elevated expression of inflammatory cytokines may play an important role in the course of CAP/CPPS disease. The extent of the inflammatory response of CAP was higher than CPPS. The inflammatory factors of MCP-1 and PDGF-BB could serve as a novel diagnostic marker.     

脊髓髓内肿瘤综合治疗进展

脊髓髓内肿瘤种类多样，其治疗方法及疗效也不尽相同。本文主要就脊髓髓内肿瘤综合治疗进展作一综述。     

体外培养的小鼠骨髓基质细胞对血细胞集落形成的支持

为探讨骨髓基质细胞在液体条件下支持造血的能力,对小鼠骨髓有核细胞体外培养,在液体培养基中形成基质细胞贴壁层,更换培养液,再种植骨髓有核细胞。结果在贴壁的基质细胞上形成了细胞集落。按细胞形态特征分为两类:一类为基质细胞集落,仅为偶见。另一类为造血细胞集落,数量较多,并且集落通过一定的结构与贴壁的基质细胞连接。结果提示,造血细胞集落的形成,需要有与骨髓基质细胞接触的微环境,并可对基质细胞的生长发育有一定的反作用。本文提出了造血细胞集落的液体培养法。     

大鼠全脑照射后早期血清S-100B变化特征

目的 观察大鼠全脑不同剂量照射后1月内不同时间点血清中S-100B的变化,以探讨S-100OB在早期放射性脑损伤中的变化特征.方法 对大鼠予4 MeV电子线分别单次全脑照射2、10和30 Gv制备大鼠早期放射性脑损伤模型.采用酶联免疫吸附试验(ELISA)检测照射后1 h、6 h、12 h、24 h、3 d、1周、1个月血清中S-100B的浓度.结果 大鼠血清S-100B浓度在照射后6 h升高最明显,照射后12 h浓度下降,照后24 h再升高(除外2 Gy组为在照射后3 dR升高),随后下降直到最后观察时间点.结论 大鼠全脑照射后血清S-100B水平发生了变化,不同剂量组血清S-100B浓度有显著性差异,剂最越高,浓度越高.结果 提示S-100B可能会成为检测早期放射性脑损伤的重要血清指标.     

腹主动脉瘤腔内修复术的评价

1986年,Balko等[1]提出经股动脉向腹主动脉腔内置入支架修复腹主动脉瘤(AAA)的设想。1991年,Parodi等[2]首次报道临床以腔内手术(EVR)治疗AAA成功。基于AAA发生的病理基础及手术进步,目前,EVR已在全球广泛开展,在许多医疗中心,半数以上的AAA已采用EVR治疗[4]。10余年来临床经验