参照C28-A2确定胱抑素C的参考值范围

目的建立本实验室胱抑素C（胱氨酸蛋白酶抑制剂,Cytatin C,Cys-C）免疫透射比浊法测定试剂盒的参考值范围。方法随机抽取240例健康人员的新鲜血清,利用市售胱抑素C测定试剂盒（免疫透射比浊法）进行测定,测定结果按CLSIC28-A2（临床实验室参考值范围的定义和确认．第2版）进行统计处理。结果本实验室1～49岁健康人群胱抑素C参考值范围为0．59—1．06mg／L,50-88岁健康人群胱抑素C参考值范围为0．48～1．32mg／L。结论实验室有．必要根据CLSIC28-A2文件的规定建立自己的参考值范围。     

动脉硬化患者氧化型低密度脂蛋白的定量研究

目的　为探讨氧化型低密度脂蛋白 (Ox -LDL)对动脉粥样硬化的致病作用和临床意义。方法　我们利用克隆抗体酶联免疫吸附试验 ,定量测定了 2 0 0例急性心脑血管病患者和 2 0 0例健康对照者血浆中氧化型低密度脂蛋白 (Ox -LDL)的水平。结果　显示急性心脑血管病患者血中Ox -LDL含量 (886 .7± 2 48.9μg/L) ,明显高于对照组 (32 3.1± 83.0 μg/L)。 结论　血中氧化型低密度脂蛋白参与与动脉粥样硬化的发病 ,抗低密度脂蛋白的氧化修饰是预防和治疗心脑血管疾病的重要措施。     

大剂量血浆置换技术及置换液的研究进展

血浆置换(plasma exchange,PE)属于血液技术净化的一部分,是将患者血液抽出体外后,将血浆中含有毒素或致病物质选择性地分离后弃去,然后将余下的血液成分和相应的置换液回输至患者体内,以清除血浆内致病物质的一种血液净化方法[1]。血浆置换又称血浆分离(plasmaphresis)。"Plasmaphresis"是希腊语,意思是血浆清除(Plasmaremoval)。血浆置换包括两部分,即血浆分离和补充置换液。血浆分离又可分为膜式血浆分离和离心式血浆分离。     

急性心肌梗死患者血清同型半胱氨酸的水平变化

同型半胱氨酸(homocystine,HCY)为含硫氨基酸,可甲基化生成蛋氨酸,或被转硫化作用生成半胱氨酸,是蛋氨酸和半胱氨酸代谢过程中的中间产物。许多学者认为高同型半胱氨酸血症是动脉粥样硬化的一个重要危险因素。我们利用荧光偏振免疫法测定了部分急性心肌梗死患者治疗前后的血清同型半胱氨酸水平,以探讨其对急性心肌梗死诊断、疗效观察和预防中的临床意义,现报告如下。     

类产碱假单胞菌的分离鉴定

类产碱假单胞菌的分离鉴定苏保鑫，丁昌鸿（山东淄博市第一医院检验科２５５２００）我们从一例慢性肾盂肾炎病人尿中培养出类产硷假单胞菌，且初次分离菌体形态为丝状，现报道如下：１病例摘要。患者，男，６４岁，因急性广泛性心肌梗塞被收住院，既往有慢性肾盂肾炎史十...     

胸腹水中C反应蛋白等免疫化学指标测定的临床意义

用生化法或电化学发光法测定48例结核性与82例恶性肿瘤患者胸腹水中C反应蛋白等免疫化学指标.结核性胸腹水中C反应蛋白、腺苷脱氨酶、β2-微球蛋白的水平,较恶性组明显升高（均P〈0.01）;而恶性组胸腹水中总胆固醇、乳酸脱氢酶、癌胚抗原、铁蛋白、糖链抗原153、细胞角蛋白19成分、神经元特异性烯醇化酶、甲胎蛋白、糖链抗原125、糖链抗原199的水平,较结核组明显升高（均P〈0.01）.联合检测C反应蛋白等多个免疫化学指标有利于诊断或鉴别诊断结核性和癌性胸腹水.     

各类胸腹水中淋巴细胞亚群分布水平的研究

Objective To determine counts of T lymphocyte sub-populations in malignant and tuberculous pleural effusion or ascites and evaluate its significance in difierential diagnosis.Methods T lymphocyte sub-populations in pleural effusion or ascites and peripheral blood were determined in 30 patients with tuberculosis and 31 patients with cancer by flow cytometry.Concentrations of cytokines Th1 and Th2,γ-interferon(IFN-γ),interleukin-12(IL-12)and IL-4 in pleural effusion or ascites were measured by enzyme-linked immunosorbent assay(ELISA).Results Compared to that in peripheral blood,percentage of CD3+ and CD4+ T-celI counts were all higher in both malignant and tuberculous pleural effusion or ascites [(73±6)%and(67±20)%vs.(51±19)%and(48±14)%,P＜0.05].Although CD3+T-cells count was higher in tuberculous pleural effusions or ascites,no difference in ratio of CD3+ and CD4+/CD3+ and CD8+ T-cell counts was found between malignant and tuberculous pleural effusions or ascites.However,ratios of IFN-γ and IL-12 to IL-4 were higher in tuberculous pleural effusion or ascites(54±24 and 82±19vs.8±6 and 19±10,t=10.34 and 16.28,respectively,P＜0.01).Conclusions CD3+ and CD4+ Tcells can be aggregated in both malignant and tuberculous pleural effusions or ascites,80 nature (tuberculosis or malignancy)of pleural effusion or ascites can not be differentiated by CD4+ and/or CD8+ T-cell counts only,and determination of cytokines Th1 and Th2 can help their differentiation.     

各类胸腹水中淋巴细胞亚群分布水平的研究

Objective To determine counts of T lymphocyte sub-populations in malignant and tuberculous pleural effusion or ascites and evaluate its significance in difierential diagnosis.Methods T lymphocyte sub-populations in pleural effusion or ascites and peripheral blood were determined in 30 patients with tuberculosis and 31 patients with cancer by flow cytometry.Concentrations of cytokines Th1 and Th2,γ-interferon(IFN-γ),interleukin-12(IL-12)and IL-4 in pleural effusion or ascites were measured by enzyme-linked immunosorbent assay(ELISA).Results Compared to that in peripheral blood,percentage of CD3+ and CD4+ T-celI counts were all higher in both malignant and tuberculous pleural effusion or ascites [(73±6)%and(67±20)%vs.(51±19)%and(48±14)%,P＜0.05].Although CD3+T-cells count was higher in tuberculous pleural effusions or ascites,no difference in ratio of CD3+ and CD4+/CD3+ and CD8+ T-cell counts was found between malignant and tuberculous pleural effusions or ascites.However,ratios of IFN-γ and IL-12 to IL-4 were higher in tuberculous pleural effusion or ascites(54±24 and 82±19vs.8±6 and 19±10,t=10.34 and 16.28,respectively,P＜0.01).Conclusions CD3+ and CD4+ Tcells can be aggregated in both malignant and tuberculous pleural effusions or ascites,80 nature (tuberculosis or malignancy)of pleural effusion or ascites can not be differentiated by CD4+ and/or CD8+ T-cell counts only,and determination of cytokines Th1 and Th2 can help their differentiation.     

端粒、端粒酶与肿瘤

人类对肿瘤及肿瘤细胞系研究表明端粒酶活性对于永生性肿瘤细胞生长可能起到关键作用 ,而正常体细胞大多未检出端粒酶活性 ,仅胚胎细胞、男性生殖细胞、造血干细胞和活化淋巴细胞中有表达。因此 ,分析和研究端粒酶活性 ,对于癌变的诊断、作为癌症化疗策略的抗端粒酶药物的潜在作用 ,都是十分令人感兴趣的 [1 ,2 ] 。1　端粒、端粒酶的结构与功能端粒 (telomere)是真核细胞染色体末端的特殊 DNA-蛋白质结构 ,端粒 DNA内含有大量的 5′TTAGGG3′重复序列 ,在体外形成发夹样折叠的 2级结构 ,为染色体末端提供了一个保护性的“帽子”,对防…     

端粒酶检测对恶性胸腹水的诊断价值探讨

目的探讨端粒酶活性对良恶性腩腹水的诊断价值。方法用TRAP银染法检测120份脚腹水脱落细胞的端粒酶活性,以瑞氏染色对脱落细胞进行细胞学检杳。结果在37例细胞学阳性的恶性胸腹水中端粒酶全部表达,在48例良性胸腹水中有2例端粒酶表达,在35例细胞学阴性的可疑恶性胸腹水中有29例端粒酶表达,测定的敏感性91.6%,特异性95.8%,阳性预示值97.0%,阴性预示值为88.5%,实验有效率93.3%。结论端粒酶活性表达与恶性胸腹水呈高度相关,检测端粒酶活性是临床鉴别良恶性胸腹水的一种有效方法。