Pseudomonas aeruginosa toxoid

P. aeruginosa adsorbed toxoid has been obtained. The stabilization of exotoxins and the content of proteases, hemolysin, lecithinase in their structure have been found to enhance the immunogenic potency of preparations which protect test animals from death caused by the experimental injections of toxins, homologous and heterologous to bacterial strains of different O-serogroups, into these animals. Antibodies neutralizing the lethal action of P. aeruginosa exotoxin have been detected in the blood sera of immunized animals.     

精制破伤风类毒素产毒及精制工艺的改进

用超滤、硫酸铵二段盐析法取代等电点沉淀法后,精制破伤风类毒素（精破类）的纯度由８０７Ｌｆ／ｍｇＰＮ提高到１８８３Ｌｆ／ｍｇＰＮ,纯度提高一倍以上。使用双胨培养基取代酪素培养基后,产毒水平由４７Ｌｆ／ｍｌ提高到８８Ｌｆ／ｍｌ（ｔ＝６．４６,ｐ＜０．００１）;用新法精制后,精破类纯度分别为１９４９Ｌｆ／ｍｇＰＮ及１７８５Ｌｆ／ｍｇＰＮ（ｔ＝０．３３４,ｐ＞０．０５）,引用双胨培养基后可提高产毒水平,但不影响精破类的纯度。     

百日咳、白喉、破伤风、乙型肝炎联合疫苗的实验研究

对制备无细胞百日咳菌苗、白喉、破伤风、乙型肝炎联合疫苗的实验室条件进行了初步探索,实验结果表明,联合疫苗的配方以每毫升无细胞百日咳组分１５－１８μｇ．ＰＮ、白喉类毒素３０ｌｆ、破伤风类毒素７－１０ｌｆ和基因工程乙肝表面抗原２０μｇ为宜,稀释缓冲液选用０．８５％ＮａＣｌ溶液吸附效果较好,动物实验证明联合疫苗中各组分均安全有效。