[目的]研制兔病毒性出血症新型疫苗。[方法]分别以黄芪多糖、蜂胶、铝胶、生理盐水为佐剂,研制兔病毒性出血症黄芪多糖佐剂、蜂胶佐剂、铝胶佐剂以及常规灭活疫苗,并从安全、免疫效果等方面对这4种疫苗进行比较。[结果]4种疫苗均有良好...[目的]研制兔病毒性出血症新型疫苗。[方法]分别以黄芪多糖、蜂胶、铝胶、生理盐水为佐剂,研制兔病毒性出血症黄芪多糖佐剂、蜂胶佐剂、铝胶佐剂以及常规灭活疫苗,并从安全、免疫效果等方面对这4种疫苗进行比较。[结果]4种疫苗均有良好的安全性。免疫后7 d 4种疫苗产生的特异性抗体效价均逐步升高,攻毒保护率均达到100%。免疫后14 d黄芪多糖佐剂抗体效价显著高于蜂胶佐剂、铝胶佐剂以及常规灭活疫苗。免疫后180 d黄芪多糖佐剂疫苗的保护率达75%,蜂胶佐剂与铝胶佐剂可达到50%,常规灭活疫苗的保护率达25%。[结论]这4种疫苗均具有良好的安全性和免疫原性,其中黄芪多糖灭活苗的免疫效果最好。展开更多
Ultrastructural pathological changes in the gut-associated lymphoid tissues of sacculus rotundus (SR) of rabbits infected with rabbit haemorrhagic disease virus (RHDV) were first observed. There were numerous holes at...Ultrastructural pathological changes in the gut-associated lymphoid tissues of sacculus rotundus (SR) of rabbits infected with rabbit haemorrhagic disease virus (RHDV) were first observed. There were numerous holes at the luminal and basement membrane surfaces of the dome epithelium (DE), consistently accompanied by necrosis of lymphocytes and M-cells, and pronounced depletion of lymphocytes in the domes and follicles, decrease of DE complex with formation of pseudomembranous structure on the surface of the dome epithelium. A specific finding in lymphocytes and macrophages was that severe destruction detraction of the membrane of rough endoplasmic reticulum(RER) was accompanied by conspicious increase of solitary, ribo-some-like particles in the cytoplasm, with appearances of intranuclear particles and intranuclear inclusions. It was found that there were many round and dense virion-like particles, with 26 nm in diameter, in the nuclei and cytoplasm of lymphoctes, plasma cells, macrophages and fibroblasts, or in degenerated cells and cellular debris. At the same time, another round virion-like particles about 34 nm in diameter were also seen in the cytoplasm of some cells and interstitium. The results indicated that the appearances of the ribosome-like particles, virion-like particles and inclusion bodies were related to the replication and assembly of RHDV. The present observations suggested that DE of sacculus rotundus could be a open pathway and a transporting route for the entry of antigens into hosts. While the antigen is profoundly deleterious, DE may be as a closed portal or a barrier preventing the foreign antigenic materials from invading.展开更多
文摘[目的]研制兔病毒性出血症新型疫苗。[方法]分别以黄芪多糖、蜂胶、铝胶、生理盐水为佐剂,研制兔病毒性出血症黄芪多糖佐剂、蜂胶佐剂、铝胶佐剂以及常规灭活疫苗,并从安全、免疫效果等方面对这4种疫苗进行比较。[结果]4种疫苗均有良好的安全性。免疫后7 d 4种疫苗产生的特异性抗体效价均逐步升高,攻毒保护率均达到100%。免疫后14 d黄芪多糖佐剂抗体效价显著高于蜂胶佐剂、铝胶佐剂以及常规灭活疫苗。免疫后180 d黄芪多糖佐剂疫苗的保护率达75%,蜂胶佐剂与铝胶佐剂可达到50%,常规灭活疫苗的保护率达25%。[结论]这4种疫苗均具有良好的安全性和免疫原性,其中黄芪多糖灭活苗的免疫效果最好。
基金This work was supported by the National Natural Science Foundation of China(39200092,39870584).
文摘Ultrastructural pathological changes in the gut-associated lymphoid tissues of sacculus rotundus (SR) of rabbits infected with rabbit haemorrhagic disease virus (RHDV) were first observed. There were numerous holes at the luminal and basement membrane surfaces of the dome epithelium (DE), consistently accompanied by necrosis of lymphocytes and M-cells, and pronounced depletion of lymphocytes in the domes and follicles, decrease of DE complex with formation of pseudomembranous structure on the surface of the dome epithelium. A specific finding in lymphocytes and macrophages was that severe destruction detraction of the membrane of rough endoplasmic reticulum(RER) was accompanied by conspicious increase of solitary, ribo-some-like particles in the cytoplasm, with appearances of intranuclear particles and intranuclear inclusions. It was found that there were many round and dense virion-like particles, with 26 nm in diameter, in the nuclei and cytoplasm of lymphoctes, plasma cells, macrophages and fibroblasts, or in degenerated cells and cellular debris. At the same time, another round virion-like particles about 34 nm in diameter were also seen in the cytoplasm of some cells and interstitium. The results indicated that the appearances of the ribosome-like particles, virion-like particles and inclusion bodies were related to the replication and assembly of RHDV. The present observations suggested that DE of sacculus rotundus could be a open pathway and a transporting route for the entry of antigens into hosts. While the antigen is profoundly deleterious, DE may be as a closed portal or a barrier preventing the foreign antigenic materials from invading.
