宫腔放置水囊联合腹腔镜下子宫病灶切除在抢救剖宫产瘢痕妊娠初治出血中的应用

目的探讨官腔放置水囊联合腹腔镜下子宫病灶切除在抢救剖宫产瘢痕妊娠初治出血中的可行性及价值。方法2010年10月～2019年6月,对5例初治出血的剖宫产瘢痕妊娠,先在宫腔内放置水囊压迫止血,然后立即行腹腔镜下剖宫产瘢痕妊娠病灶切除及缝合修补。结果5例均获成功,无中转开腹及手术并发症。手术时间35～50min,平均42min。术中出血量10～30ml,平均21ml。术后4周内血β-hCG均降至正常,月经规律来潮。结论官腔放置水囊联合腹腔镜子宫病灶切除具有微创、疗效确切等优点,是抢救初治出血的剖宫产瘢痕妊娠病例的有效方法。     

PEG修饰长效干扰素血清定量检测方法的建立及评价

目的建立PEG-IIFNm血清定量检测方法,用于人体药代动力学研究。方法采用鼠单抗为包被抗体,生物素标记兔多抗为捕获抗体,辣根酶标记亲和素显色,检测血清中不同浓度的PEGIIFNm,评价该方法的特异性、灵敏度、准确度和精密度。结果建立双抗体夹心定量检测方法,血清中药物浓度的定量检测范围为0.25~10 ng/ml,相关系数R2=0.999,检测准确度为80.0%~92.0%,批内和批间差均10%,与市售其他PEG修饰干扰素无交叉反应。结论已建立血清PEG-IIFNm药物浓度双抗体夹心定量检测方法,灵敏度、特异性、精密度以及准确性符合临床药代动力学研究要求。     

采用TaqMan MGB探针定量检测HCV 1b基因型C区氨基酸70变异

目的 建立一种定量检测HCV 1b基因型C区氨基酸70位点主要野生株（Arg-CGG,70w）和变异株（GIn-CAG,70M）的方法.方法 设计一对分别针对70 W和70 M的TaqMan MGB探针,建立一种实时逆转录聚合酶链反应定量检测方法.验证方法的敏感性、特异性和准确性.结果 所设计的引物和探针具有良好的特异性,敏感性可达5拷贝/反应.进一步的克隆测序证实了新方法的可靠性.结论 建立了一套HCV 1b亚型C区氨基酸70变异的定量检测系统,具有较高的敏感性、特异性和准确性,为研究70 W和70 M在抗病毒治疗中的动态变化提供了技术手段.     

Interferon-α induced severe thrombocytopenia:A case report and review of the literature

We report a case of severe thrombocytopenia following pegylated interferon-α 2a(Peg-IFN-α 2a)treatment of hepatitis C virus infection and summarize the clinical characteristics of 16 cases of IFN-α induced severe thrombocytopenia and its immune-mediated mechanism.Discontinuation of IFN-α and early administration of immunosuppressants are the effective therapy for IFN-αinduced severe thrombocytopenia.     

An alternative strategy to western blot as a confirmatory diagnostic test for HIV infection

BackgroundIn China, western blot (WB) is the recommended procedure for the diagnosis of HIV infection. However, this technique is time consuming and labor intensive, and its complexity restricts wide application in resource-limited regions.ObjectiveThe aim of this study was to evaluate the efficacy of a dry blood spots (DBS)–urine paired enzyme-linked immunosorbent assay (ELISA) test, instead of WB, for HIV antibody detection.Study designPlasma, DBS, and urine samples were collected from 1213 subjects from different populations. Two diagnostic testing strategies were conducted in parallel. The equivalence of the paired ELISA and WB strategies was assessed.ResultsA diagnosis of HIV was determined in 250 subjects according to the paired ELISA test, and in 249 according to the WB strategy. The discordant case was judged HIV-positive during follow-up. In total, 18 subjects were diagnosed with possible HIV using the paired ELISA test, among whom, 11 subjects tested negative with WB, and one was confirmed to be HIV-positive during follow-up. For the remaining 945 subjects, both strategies indicated a negative result. The kappa test indicated good conformity (kappa = 0.954) between the two diagnostic strategies.ConclusionThe DBS–urine paired ELISA could be applied as an alternative to WB in HIV diagnosis, which would be valuable in resource-limited regions owing to the associated affordability and ease of use.     

原发性肝癌患者介入合并无水乙醇注射治疗前后血清IGF-Ⅱ、CA19-9和AFP联检的疗效观察

目的探讨原发性肝癌患者介入合并无水乙醇注射治疗前后血清胰岛素样生长因子（IGF）-Ⅱ、CA19-9和AFP的变化及临床意义。方法应用放射免疫分析法对57例原发性肝癌患者（病例组）进行了血清IGF-Ⅱ、CA19-9和AFP含量检测，并设对照组（42例）进行比较。结果病例组介入合并无水乙醇注射治疗前血清IIGF-Ⅱ、CA19-9和AFP显著高于对照组（P〈0．01），病例组介入合并无水乙醇注射治疗后1个月血清IGF-Ⅱ、CA19-9和AFP皆已接近正常，治疗后6个月再测，未复发者仍然属于正常水平，而复发者又恢复至介入合并无水乙醇注射治疗前水平。结论测定原发性肝癌患者血清IGF-Ⅱ、CA19-9和AFP的变化对患者治疗效果和预后判定均具有重要的临床价值。     

SARS冠状病毒核衣壳蛋白单克隆抗体的制备及鉴定

目的:SARS 冠状病毒(SARS-CoV)核衣壳蛋白 N(nucleocapsid protein)单克隆抗体(monoclonal antibody,McAb)的制备及鉴定。方法:用基因重组的 SARS-CoV N 蛋白免疫 BALB/c 小鼠制备 McAb,并采用间接 ELISA、免疫印迹法进行筛选和鉴定。结果:筛选出2株抗 SARS-CoV N 蛋白 McAb 杂交瘤细胞株,间接 ELISA 证实这组单克隆抗体仅与 SARS-CoV 产生特异性反应,而与其他病原体无交叉反应,IgG 亚类鉴定1株为 IgG1,另1株为 IgG2b。2株抗体亲和常数分别为4.14×10~(-9)和3.19×10~(-9)。结论:获得特异性针对 SARS-CoV 的单克隆抗体,为 SARS-CoV 早期诊断试剂的研制奠定了基础。     

门静脉插管防治脾切除断流术后门静脉血栓形成

目的探讨门静脉插管防治脾切除断流术后门静脉血栓形成的安全性和有效性。方法自2004年4月至2005年5月,北京佑安医院肝胆外科共行脾切除断流术60例,其中35例留置门静脉插管,术后根据情况予以抗凝、溶栓等治疗。观察比较了该组患者手术前后血小板的变化、门静脉血流动力学变化、感染发生率、门静脉血栓的发生率和溶栓效果。结果脾切除断流术后患者血小板进行性升高,术后2周左右达到峰值,术后1月降至正常水平;术后门静脉最大流速、平均流速均明显减慢;门静脉插管感染1例;5例患者术前存在门静脉血栓,发生率为14.28%;术后7例患者出现门静脉血栓,发生率为20%;经门静脉插管予以溶栓抗凝治疗后,出院时复查门静脉血栓为6例,新发血栓者溶栓成功率为85.72%。结论经门静脉插管溶栓抗凝可有效防治脾切除断流术后门静脉血栓形成,为患者今后可能施行的肝移植手术保留条件。