Oral Immunization
Mostrando 25-36 de 355 artigos, teses e dissertações.
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25. Mucosal and systemic immunizations with killed Pseudomonas aeruginosa protect against acute respiratory infection in rats.
The aim of this study was to determine the efficacies of prior mucosal (oral, intra-Peyer's patch, or intratracheal) and systemic (subcutaneous) immunizations with killed Pseudomonas aeruginosa in clearance of an acute P. aeruginosa respiratory infection in rats. Rats were immunized with paraformaldehyde-killed P. aeruginosa at various doses, and 2 weeks lat
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26. Oral Administration of Influenza Vaccine in Combination with the Adjuvants LT-K63 and LT-R72 Induces Potent Immune Responses Comparable to or Stronger than Traditional Intramuscular Immunization
Mucosal immunization strategies are actively being pursued in the hopes of improving the efficacy of vaccines against the influenza virus. Our group investigated the oral immunization of mice via intragastric gavage with influenza hemagglutinin (HA) combined with mutant Escherichia coli heat-labile enterotoxins K63 (LT-K63) and R72 (LT-R72). These oral immun
American Society for Microbiology.
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27. Oral immunization with recombinant Salmonella typhimurium expressing surface protein antigen A of Streptococcus sobrinus: persistence and induction of humoral responses in rats.
Recombinant Salmonella typhimurium has been used as an oral vaccine for various microbial pathogens. Here we report immune responses in Fischer rats orally immunized with a recombinant S. typhimurium strain encoding surface protein antigen A (SpaA) of Streptococcus sobrinus. The attenuated S. typhimurium chi 4072 delta cya delta crp delta asd mutant used in
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28. Porphyromonas gingivalis-Specific Immunoglobulin G Prevents P. gingivalis-Elicited Oral Bone Loss in a Murine Model
Active immunization with Porphyromonas gingivalis whole-cell preparations has been shown to prevent P. gingivalis infection and oral bone loss. Employing passive antibody transfer and opsonization, we demonstrate with this study that immunization-elicited P. gingivalis-specific immunoglobulin G facilitates clearance of P. gingivalis in a subcutaneous chamber
American Society for Microbiology.
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29. Oral Immunization with L-Forms of Vibrio cholerae in Human Volunteers
Oral administration of heat-inactivated lysates of Vibrio cholerae Ogawa L-forms elicited significantly high coproantibody, serum indirect hemagglutinating antibody, and vibriocidal antibody responses in human volunteers, against both homologous and heterologous subtypes of V. cholerae and V. El Tor. Five oral biweekly doses produced an adequate antibody res
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30. Cross-Protective Immunity of Mice Induced by Oral Immunization with Pneumococcal Surface Adhesin A Encapsulated in Microspheres
The global use of a capsular polysaccharide-based pneumococcal vaccine has been limited because of serotype-specific protection and poor effectiveness in individuals with low immunocompetency. The mucosal immune system develops earlier in infants and lasts longer in the elderly than does the systemic immune system. Furthermore, mucosal immunization is benefi
American Society for Microbiology.
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31. Enhancement of anti-Shigella lipopolysaccharide (LPS) response by addition of the cholera toxin B subunit to oral and intranasal proteosome-Shigella flexneri 2a LPS vaccines.
Addition of the cholera toxin B subunit to oral and intranasal proteosome-Shigella flexneri 2a lipopolysaccharide vaccines improved their immunogenicities. Enhancement of anti-O-Shigella immunoglobulin A levels was most evident in lung lavages following oral immunization and in lung and intestinal fluids when suboptimal doses were used with either immunizati
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32. Immunoprophylaxis of Chlamydia trachomatis lymphogranuloma venereum pneumonitis in mice by oral immunization.
Groups of BALB/c mice were orally immunized with chlamydiae and challenged intranasally to determine whether oral immunization offers protection against pulmonary disease and to characterize the nature and kinetics of the chlamydial antibody response in the lung and other mucosal sites. Protection by oral immunization from chlamydial lung disease was demonst
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33. Experimental Oral Immunization with L-Forms of Vibrio cholerae
It has been found that oral administration of lysates of L-forms of Vibrio cholerae are antigenic and capable of eliciting an early and high coproantibody response. The L-forms of V. cholerae did not produce any booster effect. Coproantibody rise persists to significant levels even six weeks after oral immunization. L-form lysates of V. cholerae also produce
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34. Rabies ribonucleocapsid as an oral immunogen and immunological enhancer.
The administration of rabies ribonucleocapsid (RNP) by oral as well as parenteral routes was found to prime specific T cells and elicit N-protein-specific antibodies. per os and intramuscular immunization led to the production of antibodies of the IgA and IgG isotypes, respectively. Mice primed orally with RNP produced significantly enhanced amounts of virus
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35. Effect of oral immunization with recombinant urease on murine Helicobacter felis gastritis.
The ability of oral immunization to interfere with the establishment of infection with Helicobacter felis was examined. Groups of Swiss Webster mice were immunized orally with 250 micrograms of Helicobacter pylori recombinant urease (rUrease) and 10 micrograms of cholera toxin (CT) adjuvant, 1 mg of H. felis sonicate antigens and CT, or phosphate-buffered sa
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36. Persistence of serum and salivary antibody responses after oral immunization with a bacterial protein antigen genetically linked to the A2/B subunits of cholera toxin.
Primary oral immunization of mice with a bacterial protein antigen genetically coupled to the A2 and B subunits of cholera toxin induced specific secretory immunoglobulin A and serum immunoglobulin G antibodies that persisted at substantial levels for at least 11 months. A subsequent single booster immunization did not further enhance the antibody responses.