胆道感染和深部脓肿中无芽胞厌氧菌的分离和鉴定

近年来,国外时无芽胞厌氧菌的研究非常重视。许多资料指出,无芽胞厌氧菌能使所有的器官和组织发生感染,引起各种类型的疾患,已成为主要的内流性感染的病原菌之一。我们从1980年以来,自胆道感染和深部脓肿病人的检材中,分离出8株无芽胞厌氧菌。做了形态学观察,生化反应和药物敏感性试验。其由胆道感染病的十二指肠引流中分得5株,经鉴定有了3株属Veillonella,1株为 B.fragilis,另1株为 Peptostreptococcus。此外,由脑脓     

插入CpG序列的汉坦病毒S基因真核表达载体的构建及表达

肾综合征出血热(HFRS)是一类由汉坦病毒引起的以发热、出血和急性肾功能损伤为特征的急性病毒性传染病.     

插入CpG序列的汉坦病毒S基因真核表达载体的构建及表达

To improve the effect of the gene immunization against Hantaan virus, we constructed the eukaryotic expression vector pTARGET-hans(ISS) containing Hantaan Virus S gene coding region and CpG motif by cloning S gene segment with CpG motif into eukaryotic expression vector pTARGET^TM.After conformed by enzyme analysis, the recombinant expression vector pTARGET-hans(ISS) was transferred into Vero-E6 cells by electroporation and the transient expression of Hantaan virus nucleocapsid protein was detected by indirect immunofluorescence assay(IFA). In some transferred Vero-E6, the green fluorescence was showed, thus we can conclude that the eukaryotic expression vector pTARGET-hans(ISS) was successfully constructed and expressed in vitro,which will lay a foundation for further animal vaccination.     

枯草杆菌B_(224)菌培养物体外抑菌效果观察

为了探讨枯草杆菌BS_(224)菌株的抑菌原理,我们采用了小钢杯法观察BS_(224)菌培养物及其代谢产物对几种常见化脓性细菌的抑菌情况。结果,BS_(224)菌培养物有明显的抑制金黄色葡萄球菌、绿脓杆菌及大肠杆菌的作用。BS_(224)菌的代谢产物无抑菌作用。说明BS_(224)菌的抑菌作用由其细菌自身引起。