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Preventive immunization with whole inactivated Mycobacterium vaccae (MV) confers protection against HIV-associated tuberculosis (TB) in BCG-immunized adults with CD4 counts ≥200 cells/μl. We evaluated the immunogenicity of MV in the 2013 subjects of the phase III DarDarTrial using an interferon gamma (IFN-γ) enzyme linked immunosorbent assay (ELISA), tritiated thymidine lymphocyte proliferation assay...
In this study experimental mouse model for Chlamydia pneumoniae infection was used to elucidate the nature of immune response developing during primary and secondary infection. First we examined the mononuclear cells from different lymphoid organs in BALB/c mice during C. pneumoniae infection and detected a strong lymphocyte influx into mediastinal lymph nodes (MLN). To further characterize the C...
In interleukin-10 knock out (IL-10 KO) mice, accelerated clearance of pulmonary Chlamydia pneumoniae infection was observed. On the other hand, the histopathological changes in lung tissue were more pronounced in IL-10 KO mice at all time points after infection and repeated infection than in the wild type mice. Both ex vivo induced antigen-specific proliferation as well as production of proinflammatory...
T-cell-mediated responses against the liver-stage of Plasmodium falciparum are critical for protection in the human irradiated sporozoite model and several animal models. Heterologous prime-boost approaches, employing plasmid DNA and viral vector delivery of malarial DNA sequences, have proved particularly promising for maximising T-cell-mediated protection in animal models. The T-cell responses induced...
Heterologous prime-boost immunisation with RTS,S/AS02A and the poxvirus MVA-CS was evaluated in 18 healthy malaria-naïve subjects in Oxford. Both priming with RTS,S and boosting MVA-CS, and the reverse, were found to be safe and well tolerated. T cell responses as measured by IFN-γ ex vivo ELISPOT were induced, but the responses were low to moderate in both groups, with heterologous boosting yielding...
ICC-1132, a recombinant virus-like particle comprising of a modified hepatitis B core protein with a B cell (NANP) and two T cell epitopes of Plasmodium falciparum circumsporozoite protein (CSP), was administered i.m. as a single 50μg dose in Seppic ISA 720 to 11 volunteers. Local reactogenicity and systemic side effects were acceptable with the predominant finding being mild pain at the injection...
We conducted a randomized, controlled clinical trial to determine the immunogenicity of intradermal immunization with recombinant hepatitis B vaccine among HIV-positive subjects. Induction of antibody concentration over 10IU/L or four-fold increase in the antibody concentration against hepatitis B surface antigen was regarded a successful immunization. Intradermal immunization induced protective immunity...
Vaccination against Chlamydia pneumoniae would be a beneficial strategy for either preventing or controlling infection by this human respiratory pathogen that also causes persistent infections. In the present study, we used recombinant Semliki Forest virus (rSFV) particles for delivering C. pneumoniae antigens major outer membrane protein (MOMP) or outer membrane protein 2 (Omp2) to the mice or applied...
Immune responses induced by intramuscular DNA immunization with Chlamydia pneumoniae genes coding for the major outer membrane protein (MOMP), cysteine-rich outer membrane protein 2 (Omp2) or the heat shock protein 60 (Hsp60) were studied. BALB/c mice were vaccinated intramuscularly three times at 3-week intervals and challenged intranasally 2 weeks after the last injection. Immunization with pmomp...
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