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目的:构建pRSETA/AGAP/CD13scFv重组表达质粒,为重组CD13单链抗体/蝎毒素AGAP融合蛋白的表达奠定实验基础.方法:利用RT-PCR法从东亚钳蝎尾腺中获得AGAP目的基因,并与克隆质粒TOPO载体连接转入DH5α菌,用EcoR I和Hind III将目的基因从克隆质粒上切下并与同样双酶切后的表达质粒 pRSETA连接;在含CD13单链抗体(CD13scFv)的pSecTag2HygroC/CD13 -1/RFP质粒中获得CD13scFv目的基因,用EcoR I、Xho I双酶切并与同样双酶切后的pRSETA/AGAP连接转入DH5α菌,提取重组质粒进行酶切及测序鉴定.结果:目的基因AGAP与表达质粒pRSETA连接,成功构建了pRSETA/AGAP重组质粒;目的基因CD13scFv再与该重组质粒连接,成功构建了pRSETA/AGAP/CD13scFv.结论:AGAP目的基因能经RT-PCR法获得,并能成功与表达质粒连接,构建pRSETA/AGAP;目的基因CD13scFv能由pSecTag2HygroC质粒中获得,并成功与pRSETA/AGAP连接,得pRSETA/AGAP/CD13scFv重组质粒.为该重组质粒体外融合蛋白的表达及今后研究CD13scFv和蝎毒素AGAP协同性杀伤CD13阳性肿瘤细胞提供了良好的实验基础及理论依据. 相似文献
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摘 要 目的:探讨地西他滨联合CAG方案治疗难治性贫血伴原始细胞增多型骨髓增生异常综合征(MDS RAEB)及难治性急性髓系白血病(AML)的疗效及其安全性。方法:138例MDS RAEB及难治性AML随机分为观察组(n=69)与对照组(n=69)。对照组采用CAG化疗方案,观察组在对照组基础上加用地西他滨治疗。两组疗程均为4周。比较两组MDS RAEB患者和难治性AML患者的治疗疗效及药品不良反应发生情况。结果:观察组MDS RAEB患者治疗RR为70.00%,高于对照组的47.37%(P<0.05);观察组难治性AML治疗的RR为68.97%,高于对照组的41.94%(P<0.05)。治疗后,两组白细胞、血小板计数均较治疗前明显增加,血红蛋白则较前明显降低(P<0.05),且观察组白细胞、血小板计数高于对照组,血红蛋白水平低于对照组(P<0.05)。两组药品不良反应发生率比较,差异无统计学意义(P>0.05)。结论:地西他滨联合CAG方案治疗MDS RAEB及难治性AML疗效显著,且未明显增加化疗毒副反应,安全性良好。 相似文献
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目的探索人卵泡液(human follicular fluid, hFF)中肾素-血管紧张素系统(renin-angiotensin system, RAS)与年龄、卵巢功能及体外受精(in vitro fertilization, IVF)实验室结局的相关关系。方法设计非干预的观察性研究, 收集2021年1月至2022年2月期间在苏州大学附属第一医院生殖医学中心单纯因男方因素接受IVF女性患者的hFF及不包含个人身份的病历信息。采用酶联免疫吸附试验试剂盒检测hFF中的肾素、血管紧张素转换酶(angiotensin converting enzyme, ACE)、ACE2、血管紧张素(angiotensin, Ang)Ⅱ和Ang 1-7的水平。一元线性回归用于RAS组分与年龄的相关性分析, 多元线性回归用于RAS组分与卵巢功能及IVF实验室结局的相关性分析。结果①共获139例可分析样本。②年龄与肾素(Pearson’’sr=-0.313 3, P<0.001)、ACE(Pearson’’sr=-0.183 6, P=0.031)、AngⅡ(Pearson’’sr=-0.218 6... 相似文献
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通过分析眼后节光学相干断层扫描仪的轴向分辨率理论计算模型,设计并研制了一套用于测量其轴向分辨率的检测装置.针对一台商业化的眼后节光学相干断层扫描仪,理论计算其轴向分辨率为5.07μm,实际测量值为5.45μm.对检测装置进行不确定度评定,结果为(5.45±0.10)μm,检测装置所引入的测量误差很小;同时,利用该检测装... 相似文献
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常规免疫预防阻断乙型肝炎病毒母婴感染的效果 总被引:3,自引:1,他引:3
目的 评价免疫预防措施在实际应用中阻断乙型肝炎病毒(hepatitis B virus,HBV)母婴感染的效果,阐明孕妇孕晚期使用乙肝免疫球蛋白(hepatitis B immunoglobulin,HBIG)能否减少HBV母婴感染.方法 将2002年7月至2004年8月江苏省14个县市的419例乙型肝炎表面抗原(hepatitis B surface antigen,HBsAg)阳性孕妇所分娩子女作为研究组,同地区同期的453例 HBsAg-孕妇分娩的子女作为对照组,于2009年10月至2010年3月期间对2组研究对象进行随访,调查母亲孕期HBIG使用情况以及子女出生后HBIG和乙型肝炎疫苗接种情况,检测儿童HBV血清标志物.率的比较采用χ2分析或者Fisher精确概率法,均数的比较采用t检验.结果研究组实际随访298例(71.12%),其中11例(3.69%) HBsAg+;而随访的328例(72.41%)对照组中,HBsAg阳性率为0.00 (χ2=12.32,P<0.01).共11例儿童HBsAg+,其母亲均为HBsAg和HBeAg同时阳性,除1例具体情况不详外,9例儿童在出生时明确没有使用HBIG或延迟接种疫苗,仅1例同时规范使用了HBIG和乙型肝炎疫苗.2组儿童抗-HBs阳性率分别为69.46%和69.21% (χ2=0.01,P=0.95).孕晚期注射HBIG的92例孕妇中,2例(2.17%)儿童HBsAg+;未使用HBIG的197例孕妇中,9例(4.57%)儿童HBsAg+ (χ2=0.98,P=0.51).结论 江苏省常规免疫预防措施在阻断母婴HBV感染方面取得了良好的效果,但对HBV携带孕妇(特别是HBeAg+者)的新生儿仍需强调及时注射HBIG.孕妇孕晚期使用HBIG不能减少母婴HBV感染.Abstract: Objective To assess the protective effect of vaccination in routine application on hepatitis B virus (HBV) exposed infants and to clarify whether hepatitis B immunoglobulin (HBIG) administration of pregnant women may reduce the risk of maternal-fetal transmission of HBV. Methods Serum samples of 6398 pregnant women at gestation of 15-20 weeks from 6 urban and 8 rural areas across Jiangsu province were previously tested for serologic markers of HBV by ELISA from July 2002 to August 2004. In this study, infants born to 419 HBV carrier mothers were taken as the study group, while infants born to 453 non-carrier mothers were taken as the control group by stratified random sampling. They were followed-up and screened for HBV markers during October 2009 to March 2010. Information including HBIG administration during pregnancy, HBV vaccination and HBIG administration of the infants were collected. χ2 test or Fisher′s exact method were used to compare the rates and the comparison of the means was by t test. Results The follow-up rates of the study group and control group were 71.12% (298/419) and 72.41% (328/453), respectively. Of the 298 infants born to HBV carrier mothers, 11 (3.7%) were positive for HBsAg, while none of the 328 infants born to non-carrier mothers was HBsAg positive (χ2=12.32, P<0.01). All of the 11 children were born to mothers with both HBsAg and HBeAg positive, and nine of the 11 children were not injected HBIG or not immunized with hepatitis B vaccine within 24 hours after birth, with only one received regular vaccination and detailed information was unknown in one case. The positive rates of anti-HBs in the study group and the control group were 69.46% and 69.21% respectively (χ2=0.01, P=0.95). HBsAg positive rate of the children born to pregnant women treated with HBIG during late pregnancy (n=92) was 2.17% (n=2), whereas that in the children born to women not treated with HBIG (n=197) was 4.57% (χ2=0.98, P=0.51). Conclusions The protective effect of immunoprophylaxis in routine application against perinatal HBV infection in Jiangsu province is good. Efforts are required to emphasize the importance of HBIG administration in infants born to HBV carrier mothers, especially in HBeAg positive mothers within 24 hours after delivery. Treatment of HBsAg positive pregnant women with HBIG in third trimester would not decrease the risk of maternal-fetal transmission of HBV. 相似文献
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目的 探讨水化治疗双版提示卡对择期接受冠状动脉介入治疗术(PCI)的老年冠心病(CHD)患者饮水依从性及护理工作满意度的影响.方法 将96例老年CHD患者按入院时间分为对照组(47例)和研究组(49例),两组均行择期PCI术.对照组予以常规护理,研究组在对照组基础上予以水化治疗双版提示卡.比较两组的护理效果.结果 研究... 相似文献
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