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The induction of mucosal immune responses by a liposome-formulated Y. pestis vaccine (formaldehyde-killed whole cell vaccine; KWC) was evaluated. We demonstrated that intranasal immunization of mice with Y. pestis KWC vaccine, formulated with liposomes, significantly enhanced mucosal immune responses in the lung when compared to the responses induced with KWC vaccine alone. These immune responses...
The induction of protective immunity stemming from vaccines delivered by mucosal routes is dependent on the development of safe and effective mucosal adjuvants. The immunostimulant monophosphoryl lipid A (MPL(R)) was evaluated for its ability to enhance both systemic and mucosal immunity to three distinct antigens. Vaccines formulated with MPL(R) and hepatitis B surface antigen, tetanus toxoid or...
The properties of various vaccine-adjuvant formulations that are capable of inducing both systemic and common mucosal immunity subsequent to their intradermal administration are described. Effective mucosal adjuvants, including bacterial toxins, chemical enhancers of cyclic AMP, and the active form of vitamin D3, all shared the ability to promote dendritic cell migration from the skin to Peyer's patches...
The intranasal (i.n.) route of immunisation, has recently been of active interest in endeavours to improve the efficacy of vaccination against a number of respiratory infections. Here, we examined the outcome of tuberculous infection in BALB/c mice. I.n. application of the BCG-Pasteur strain was found to be highly protective against challenge infection with the pathogenic H37Rv strain given after...
The presence of secretory (S-) IgA in middle-ear fluid and localization of IgA-secreting cells in its mucosae suggest that the middle ear is an effector site of the mucosal immune system. Several strategies have been devised to induce potent, long-lasting, and recallable mucosal S-IgA antibodies, as well as circulating IgG antibodies and Th1- or Th2-type help, according to the most appropriate responses...
Antigen-specific mucosal immunity is thought to be important for protection against influenza virus infection. Currently licensed parenteral influenza vaccines stimulate the production of serum antibodies, but are poor inducers of mucosal immunity. The adjuvant MF59 has been shown to enhance the humoral immune response to parenteral influenza vaccine in humans and the mucosal immune response to intranasally-administered...
We investigated the antigen-specific mucosal and systemic immune responses of newborn lambs following enteric immunization, targeting jejunal Peyer's patches with a human adenovirus vector that expressed the glycoprotein D (gD) of bovine herpesvirus-1. Both humoral and cell-mediated gD-specific mucosal immune responses were detected in newborn lambs (1-4 days old) after a single immunization and these...
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