To study the immune effect of recombinant avian influenza virus H5 subtype bivalent inactivated vaccine （ HSN1, Re-6 strain ＋ Re-4 strain） and to provide the basis for formulating reasonable immune procedure of avi...To study the immune effect of recombinant avian influenza virus H5 subtype bivalent inactivated vaccine （ HSN1, Re-6 strain ＋ Re-4 strain） and to provide the basis for formulating reasonable immune procedure of avian influenza vaccine in clinical practice. A total of 12 batches of vaccines from three companies were used for the iannune of SPF chickens and SPF ducks. Each chicken or duck serum was separately collected every 3 weeks until the immunization up to the 24^th week. The serum antibody titers of Re-6 and Re-4 were detected. The results showed that the HI titers of the inoculated SPF chickens and SPF ducks roached the peak when the immune time were the 6^th and 3^rd week after the first immunization respectively; then the titer decreased gradually as time prolonged; the highest titer of SPF chickens was greater than that of SPF ducks; the high titer duration of SPF chickens were longer than that of SPF ducks ; and all the vaccines from the three companies showed a good immune effect.展开更多
目的用甲型肝炎病毒（hepatitis A virus,HAV）L-A-1减毒株制备甲型肝炎灭活疫苗,并检测其免疫原性。方法用细胞工厂培养人胚肺二倍体细胞（2BS株）,感染L-A-1减毒株增殖病毒,收获含病毒的细胞,经裂解、聚乙二醇（polyethylene glycol,...目的用甲型肝炎病毒（hepatitis A virus,HAV）L-A-1减毒株制备甲型肝炎灭活疫苗,并检测其免疫原性。方法用细胞工厂培养人胚肺二倍体细胞（2BS株）,感染L-A-1减毒株增殖病毒,收获含病毒的细胞,经裂解、聚乙二醇（polyethylene glycol,PEG）6000沉淀、三氯甲烷抽提、凝胶过滤层析纯化后,甲醛灭活,氢氧化铝佐剂吸附,制备3批试验疫苗。按照《中国药典》三部（2010版）中甲肝灭活疫苗标准进行各项检定,并进行小鼠效力试验,计算半数有效稀释倍数;将疫苗于37℃存放5、10、15、20、25和30 d,考察疫苗的加速稳定性。结果甲型肝炎病毒经提取纯化后,抗原回收率达80%以上,杂蛋白去除率达95%以上;制备的3批试验疫苗各项检定结果均符合《中国药典》三部（2010版）要求;小鼠效力试验结果显示,半数有效稀释倍数分别为进口疫苗和国产疫苗的1.25～1.40和2.02～2.26倍;37℃保存30 d,疫苗的体外相对效力仍在合格范围内。结论制备了纯度较高的甲型肝炎灭活疫苗,其在小鼠体内具有良好的免疫原性,为进一步规模化生产甲型肝炎灭活疫苗奠定了基础。展开更多
基金Supported by Shandong Winning Project of Quality Monitoring of Avian Influenza Vaccine
文摘To study the immune effect of recombinant avian influenza virus H5 subtype bivalent inactivated vaccine （ HSN1, Re-6 strain ＋ Re-4 strain） and to provide the basis for formulating reasonable immune procedure of avian influenza vaccine in clinical practice. A total of 12 batches of vaccines from three companies were used for the iannune of SPF chickens and SPF ducks. Each chicken or duck serum was separately collected every 3 weeks until the immunization up to the 24^th week. The serum antibody titers of Re-6 and Re-4 were detected. The results showed that the HI titers of the inoculated SPF chickens and SPF ducks roached the peak when the immune time were the 6^th and 3^rd week after the first immunization respectively; then the titer decreased gradually as time prolonged; the highest titer of SPF chickens was greater than that of SPF ducks; the high titer duration of SPF chickens were longer than that of SPF ducks ; and all the vaccines from the three companies showed a good immune effect.
