Protective and cross-protective mucosal immunization of mice by influenza virus type A with bacterial adjuvant
Language English Country Netherlands Media print-electronic
Document type Journal Article, Research Support, Non-U.S. Gov't
PubMed
18160106
DOI
10.1016/j.imlet.2007.11.001
PII: S0165-2478(07)00285-4
Knihovny.cz E-resources
- MeSH
- Adjuvants, Immunologic * MeSH
- Bacillus immunology MeSH
- Influenza, Human immunology mortality prevention & control virology MeSH
- Cytokines biosynthesis immunology MeSH
- Immunization MeSH
- Orthomyxoviridae Infections immunology mortality prevention & control MeSH
- Humans MeSH
- Mice, Inbred BALB C MeSH
- Mice MeSH
- Lung immunology pathology MeSH
- Antibodies, Viral blood immunology MeSH
- Immunity, Mucosal MeSH
- Influenza Vaccines immunology MeSH
- Influenza A Virus, H1N1 Subtype immunology MeSH
- Influenza A Virus, H3N2 Subtype immunology MeSH
- Cross Reactions MeSH
- Animals MeSH
- Check Tag
- Humans MeSH
- Mice MeSH
- Female MeSH
- Animals MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
- Names of Substances
- Adjuvants, Immunologic * MeSH
- Cytokines MeSH
- Antibodies, Viral MeSH
- Influenza Vaccines MeSH
Mucosal immunization by inactivated viruses often fails to evoke a sufficient immune response. Intensive efforts have been made to enhance the response by suitable adjuvants. We used the G+ nonpathogenic delipidated bacterium Bacillus firmus with pronounced immunostimulatory properties as an adjuvant for immunizing mice with inactivated influenza virus type A. BALB/c mice were immunized intratracheally with inactivated influenza A H1N1 and H3N2 viruses. The production of antibodies in sera and secretions was determined by the ELISA. The local situation in the lungs was assessed histologically and by testing the cytokine expression. The protective and cross-protective effect against infection was tested in in vivo experiments after infection with influenza virus A H1N1. B. firmus as adjuvant increased both systemic and mucosal antibody responses, improved protection against homologous virus and induced cross-protection against virus H1N1 after immunization with virus H3N2.
References provided by Crossref.org
Immunomodulatory properties of subcellular fractions of a G+ bacterium, Bacillus firmus
