国产ELISA试剂盒应用于兴奋剂控制中的hCG检测

本文介绍用国产酶免定量药盒测定血、尿样中ｈＣＧ含量的一种ＥＬＩＳＡ方法。该方法特异性好、经济可靠而且简便快捷，适用于运动员尿样的兴奋剂检测。文中还报道了该方法应用于测定两例志愿者注射ｈＣＧ后的血、尿样及国际奥委会医学委员会１９９４年水平考试和１９９５年资格复试ｈＣＧ阳性尿样的结果，并讨论了测得值与其它试剂盒测定结果的差异及原因。     

组织型纤溶酶原激活物双单抗夹心ELISA建立及临床应用

本文动用自制ｔ－ＰＡ单克隆抗体建立ｔ－ＰＡ：Ａａ夹心ＥＬＩＳＡ法。结合ｔ－ＰＡ：Ａ、ＰＡＩ：Ａ测定，对５０例正常人，８７例肝病，４７例冠心病和１９例深静脉血栓 成患者的血浆ｔ－ＰＡ：Ａｇ、ｔ－ＰＡ：Ａ、ＰＡＩ：Ａ水平进行了研究。     

长沙市动物饲养员和屠宰工人等特殊人群弓形虫感染调查

目的 为了解长沙市动物饲养员、屠宰工人和宠物商贩等几种特殊人群弓形虫感染的情况。方法 采用ELISA法检测弓形虫抗体。结果 检测88名特殊人群，弓形虫IgG抗体阳性率为3．41％。结论 长沙市动物饲养员、屠宰工人和宠物商贩几种特殊人群弓形虫感染率低于全国平均水平，但仍有必要加强对动物密切接触者的健康教育，提高他们的自我防护意思。     

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。     

斑点酶联免疫吸附试验检测伤寒特异性抗体

目的　验证斑点酶联免疫吸附试验 (Dot -ELISA)检测伤寒抗体的敏感性和特异性。方法　采用Dot -ELISA测定伤寒沙门菌包膜抗原V、菌体抗原O和鞭毛抗原Hd 的特异性抗体 ,并与肥达氏反应相比较。结果　肥达氏反应均为阴性 ,而经Dot -ELISA试验 ,疑似伤寒患者血清中检出 3种抗体阳性 1例 ,非伤寒发热病人血清中检出单项Hd 抗体阳性1例。Dot -ELISA法比肥达氏反应敏感 10倍以上 ,且无交叉反应。结论　该法有较高的特异性和敏感性 ,且操作简单、快速、无需特殊设备 ,宜于临床推广应用。     

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.     

RENIN SECRETION FROM MALIGNANT PULMONARY METASTATIC TUMOUR CELLS OF VASCULAR ORIGIN

1. A pulmonary chemodectoma/glomangiosarcoma that had metastasized from the thigh was studied after removal from a 22 year old Algerian patient with hypertension, high plasma prorenin and signs of secondary aldosteronism. 2. Renin and renin mRNA were localized in sections of the tumour tissue using monoclonal anti-human renin antibody and human renin cDNA probe, respectively. 3. The cells grew prolifically in culture, but, even though their renin content was similar to that of transfected human juxtaglomerular cell tumour cells (approximately 1 pg/microgram DNA), their rate of secretion of renin was much lower (0.05-0.15 cf. 0.5-1.5 pg/h per microgram DNA). 4. Forskolin (10 mumol/l for 24 h) increased secretion of renin from 1.9 +/- 0.36 to 4.1 +/- 0.64 pg/ml per h of culture (P less than 0.001, n = 11), consistent with cAMP being a second messenger in the secretory mechanism. 5. The cells should provide valuable information about intracellular mechanisms for the regulation of renin synthesis and secretion.     

Evaluation of human antibody responses to diphtheria toxin subunits A and B in various age groups

This study aimed to evaluate human antibody responses to diphtheria toxin subunits in various age groups. Antibodies against the intact diphtheria toxin and the diphtheria toxin subunits A and B were evaluated in 1319 individuals using a double-antigen ELISA. Although high levels of protection (83.6%, 95% CI 79.2-87.4) were found in children and adolescents, the middle-aged adult population was less protected (28.8%, 95% CI 24.3-33.6). An increase in age was associated with a decrease in the frequency of protected individuals in the 0-39-year age group (p <0.001). Anti-subunit B levels correlated well (p <0.01) with levels of antibodies against the intact toxin. In children aged < or =16 years, the intervals at which the peaks in geometric mean titres of anti-subunit B antibodies were observed were found to correlate with the ages at which booster doses are administered. Overall, males appeared to be more protected than females (OR 1.67, 95% CI 1.34-2.08, p <0.001). A small group of individuals had antibody levels of > or =0.1 IU/mL against the intact toxin, but did not have protective antibody against subunit B. Determination of anti-subunit B antibody levels should help in evaluating the effectiveness of diphtheria boosters and other aspects of diphtheria immunity.     

ELISA双抗原夹心法在梅毒检测中的重要分析

目的通过三种实验方法对梅毒进行检测.方法应用TEUST、SLISA和TPPA实验检测80例患者血液.结果80例ELISA法阳性TRUST法阴性标本中TPPA阳性为72例(90%),阴性为8例(10%).结论实验结果说明ELISA法对梅毒检测的检出率较高.