1999
DOI: 10.1163/156856299x00892
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Intranasal immunization against influenza virus using polymeric particles

Abstract: The aim of this study was to evaluate the potential of poly(D,L-lactide-co-glycolide) nano-and microspheres, with a mean diameter of 220 nm and 8 microm, respectively, to enhance the nasal and systemic immune responses against influenza virus antigen. High encapsulation levels of antigen were achieved in all cases. Neither the molecular weight nor the antigenicity of the entrapped antigen were affected by the encapsulation procedure. Following nasal immunization, the nasal washes IgA and the serum IgG response… Show more

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Cited by 25 publications
(4 citation statements)
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“…Carr et al showed that polystyrene microparticles with a diameter of 1 µm can adhere to NALT and improve particle uptake by intranasal administration [99]. Lemoine et al noted that uptake of polymeric particles by NALT appeared to be crucial for enhancement in the immune response [101]. In their study, nasally administered PLGA particles with a diameter of 220 nm or 8 µm did not reach the NALT in mice, and consequently the nasal wash IgA and serum IgG levels were not enhanced compared to soluble antigen.…”
Section: Mucosal Vaccine Delivery Systemsmentioning
confidence: 99%
“…Carr et al showed that polystyrene microparticles with a diameter of 1 µm can adhere to NALT and improve particle uptake by intranasal administration [99]. Lemoine et al noted that uptake of polymeric particles by NALT appeared to be crucial for enhancement in the immune response [101]. In their study, nasally administered PLGA particles with a diameter of 220 nm or 8 µm did not reach the NALT in mice, and consequently the nasal wash IgA and serum IgG levels were not enhanced compared to soluble antigen.…”
Section: Mucosal Vaccine Delivery Systemsmentioning
confidence: 99%
“…In both mucosal and parenteral vaccination approaches, although NPs delivery enhanced Ab-mediated immune responses, at least one booster vaccination was required to generate significantly higher amounts of antibody responses. Previously, it has been reported that nasal vaccination of mice with influenza encapsulated in PLGA NPs without surface modification induced lower IgA in nasal washes due to rapid clearance of the particles from the nasal mucosa [ 54 ]. Moreover, mucosal delivery (via aerosol, intranasal and pulmonary routes) of inactivated AIV vaccines combined with conventional and molecular adjuvants failed to induce mucosal IgA in chickens [ 55 57 ].…”
Section: Discussionmentioning
confidence: 99%
“…In the studies cited, various levels of immune responses were induced. Vila et al 41 studied nasal immunization with tetanus toxoid following encapsulation and administration in the forms of PEG-coated polylactic acid nanospheres, chitosan-coated polylactic-glycolic acid nanospheres and chitosan nanospheres. They observed that PEG-coated nanospheres induced higher levels of tetanus toxoid in the blood compared to chitosan-coated nanospheres.…”
Section: Vaccines and Dnamentioning
confidence: 99%