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| 1 | Characterization of polyclonal antibodies against nonstructural protein 9 from the porcine reproductive and respiratory syndrome virus显示文摘Porcine reproductive and respiratory syndrome(PRRS) is considered to be one of the most important infectious diseases impacting the swine industry and is characterized by reproductive failure in late term gestation in sows and respiratory disease in pigs of all ages.The nonstructural protein 9 gene,Nsp9,encoding the RNA-dependent RNA polymerase,is generally regarded as fairly conserved when compared to other viral proteins.Antibodies against Nsp9 will be of great importance for the diagnosis and treatment of the causal agent,PRRS virus.A study was undertaken to generate polyclonal antibodies against the immunodominant Nsp9.For this purpose,the Nsp9 was expressed in Escherichia coli and subsequently used as an antigen to immunize New Zealand rabbits.Antiserum was identified via an indirect ELISA,and then verified based on the ability to react with both naturally and artificially expressed Nsp9.Results of virus neutralization test showed that this antiserum could not neutralize the PRRSV.Nevertheless,this antiserum as a diagnostic core reagent should prove invaluable for further investigations into the mechanism of PRRS pathogenesis. | Mengmeng ZHAO Juanjuan QIAN Jiexiong XIE Tiantian CUI Songling FENG Guoqiang WANG Ruining WANG Guihong ZHANG | 2016 | Frontiers of Agricultural Science and Engineering2016，3，2： | 2 |
| 2 | Rare Metal Materials and Engineering显示文摘 | Wang Ruining Xi Zhengping Zhao Yongqing | 2008 | 37(8):13562008，37，8： | 1 |
| 3 | A microcalorimetric method for studying the biological effects of La^3+ on Escherichia coli 显示文摘 | Zhao Ruining Liu Yi Xie Zhlxiong | 2000 | Biochem Biophys Methods2000，46，： | 1 |
| 4 | Efficient purification of cell culture-derived classical swine fever virus by ultrafiltration and size-exclusion chromatography显示文摘Large-scale production of cell culture-based classical swine fever virus(CSFV)vaccine is hampered by the adverse reactions caused by contaminants from host cell and culture medium.Hence,we have developed an efficient method for purifying CSFV from cell-culture medium.Pure viral particles were obtained with two steps of tangential-flow filtration(TFF)and size-exclusion chromatography(SEC),and were compared with particles from ultracentrifugation by transmission electron microscopy(TEM),infectivity and recovery test,and real time fluorescent quantitative PCR(FQ-PCR).TFF concentrated the virus particles effectively with a retention rate of 98.5%,and 86.2%of viral particles were obtained from the ultrafiltration retentate through a Sepharose 4 F F column on a biological liquid chromatography system.CSFV purified by TFF-SEC or ultracentrifugation were both biologically active from 1.0×10–4.25 TCID50·mL^(–1) to 3.0×10^(–6.25) TCID50·mL^(–1),but the combination of TFF and SEC produced more pure virus particles than by ultracentrifugation alone.In addition,pure CSFV particles with the expected diameter of 40–60 nm were roughly spherical without any visible contamination.Mice immunized with CSFV purified by TFF-SEC produced higher antibody levels compared with immunization with ultracentrifugation-purified CSFV(P<0.05).The purification procedures in this study are reliable technically and feasible for purification of large volumes of viruses. | Ruining WANG Yubao ZHI Junqing GUO Qingmei LI Li WANG Jifei YANG Qianyue JIN Yinbiao WANG Yanyan YANG Guangxu XING Songlin QIAO Mengmeng ZHAO Ruiguang DENG Gaiping ZHANG | 2015 | Frontiers of Agricultural Science and Engineering2015，2，3： | 1 |
| 5 | Clinical features of 162 fatal cases of COVID-19:a multi-center retrospective study显示文摘Background:The coronavirus disease 2019(COVID-19)has affected approximately 2 million individuals worldwide;however,data regarding fatal cases have been limited.Objective:To report the clinical features of 162 fatal cases of COVID-19 from 5 hospitals in Wuhan between December 30,2019 and March 12,2020.Methods:The demographic data,signs and symptoms,clinical course,comorbidities,laboratory findings,computed tomographic(CT)scans,treatments,and complications of the patients with fatal cases were retrieved from electronic medical records.Results:The median patient age was 69.5(interquartile range:63.0–77.25)years,and 80%of the patients were over 61 years.A total of 112(69.1%)patients were men.Hypertension(45.1%)was the most common comorbidity,while 59(36.4%)patients had no comorbidity.At admission,131(81.9%)patients had severe or critical COVID-19,whereas 39(18.1%)patients with hypertension or chronic lung disease had moderate COVID-19.In total,126(77.8%)patients received antiviral treatment,while 132(81.5%)patients received glucocorticoid treatment.A total of 116(71.6%)patients were admitted to the intensive care unit(ICU),and 137(85.1%)patients received mechanical ventilation.Most patients received mechanical ventilation before ICU admission.Approximately 93.2%of the patients developed respiratory failure or acute respiratory distress syndrome.There were no significant differences in the inhospital survival time among the hospitals(P=0.14).Conclusion:Young patients with moderate COVID-19 without comorbidity at admission could also develop fatal outcomes.The in-hospital survival time of the fatal cases was similar among the hospitals of different levels in Wuhan. | Xianlong Zhou Guoyong Ding Qing Fang Jun Guo Luyu Yang Ping Wang Shou-Zhi Fu Ang Li Jian Xia Jiangtao Yu Jianyou Xia Min Ma Zhuanzhuan Hu Lei Huang Ruining Liu Cheng Jiang Shaoping Li Mingxia Yu Xizhu Xu Yan Zhao Quan Hu Weijia Xing Zhigang Zhao | 2022 | Emergency and Critical Care Medicine2022，2，3： | 0 |
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