Abstract
The study of purified alkaline phosphatase and crude extract antigen immunogenicity from Echinococcus multilocularis was carried out on BALB/c mice. The animals were immunized, then infected with E. multilocularis metacestode. The immune response against purified alkaline phosphatase was studied. Flow cytometry analysis of the CD4+ and CD8+ lymphocyte populations showed a predominance of CD4+ populations in infected immunized mice. The specific humoral response to purified alkaline phosphatase was analyzed by enzyme-linked immunosorbent assay method. We noted a stimulation of an immunoglobulin IgG response. The isotypic profile showed a prevalence of IgG1 and IgG3 in immunized infected mice compared to IgG2a and IgG2b. In addition, analysis of the profiles of the in vitro secreted cytokines, after stimulation of the splenocytes from immunized mice, was performed. The cytokine profile was a mix of Th1/Th2 types in the infected and uninfected immunized mice. The results of this study suggest a humoral mixed Th1/Th2 response, with a high predominance of Th2 response. A similar study was conducted in mice immunized with crude total antigen. The comparison of the immune response showed an important immune response in mice immunized with purified alkaline phosphatase compared to mice immunized with the crude total antigen.
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Acknowledgements
The authors thank Centre Commun d’Imagerie Laennec (CeCIL IFR 62), and Simone Peyrol for technical support. The authors declare that the experiments comply with the current laws of the country in which the experiments were performed.
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Issaadi, N., Fraize, M., Azzouz, S. et al. Echinococcus multilocularis: immunity response to purified alkaline phosphatase in BALB/c mice. Parasitol Res 98, 218–226 (2006). https://doi.org/10.1007/s00436-005-0041-7
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DOI: https://doi.org/10.1007/s00436-005-0041-7