Application of McAbs against rabies nucleocapsid in diagnosis of rabies street virus / 中华流行病学杂志

<p><b>OBJECTIVE</b>McAbs against rabies nucleocapsid were used to detect rabies street viruses in animal brain specimens with indirect immunofluorescent assay to evaluate the sensitivity and specificity of this assay.</p><p><b>METHODS</b>62 specimen from rabid animal brains including genotype 1 to 7 and 271 specimens from different normal animal brains collected in Pasteur Institute in 2003 were tested and compared, using indirect immunofluorescent assay. All these specimens were identified and compared using rapid rabies enzyme immunodiagnosis, fluorescent antibody test and rabies virus isolation assay in neuroblastoma cell culture which were all provided by Pasteur Institute.</p><p><b>RESULTS</b>Both sensitivity and the specificity of the indirect immunofluorescent assay were 100%.</p><p><b>CONCLUSION</b>The results showed a positive of rabies virus detection with these methods.</p>

Study on Purification and Immunogenicity of Rabies Virus Nucleo protein / 中国病毒学

In order to establish the optimum condition for purifica tion of the nucleoprotein(NP) of rabies virus by immunoaffinity chromatography, the efficient and non-denaturative eluents(Mg-el) was obtained by using ELISA elution model; furthermore, it didn't damage the activity of NP. Two kind of NPs , expressed by recombinant vaccinia virus (rVac-N) and recombinant baculovirus (BRN), were purified by a Sepharose CL 4B column and a 2C12- Sepharose 4B colum n. By Western-blot and SDS-PAGE, high purity and good antigenical intact NPs w ere identified. The purified ribonucleoprotein (RNP) of rabies virus 5aG strain was also obtained. After immunized with NP and RNP, mice developed a strong anti -nucleoprotein response and were protected against a lethal challenge of rabies virus CVS strain. There were not difference been observed among the mice immuni zed with different purified protein. These data indicate that the NPs are antige nical and immunogenical comparable to the authentic rabies RNP and therefore pre sent a potential source of an effective ,safe and economical subunit vaccine.