Effect of age and maternal antibodies on the systemic and mucosal immune response after neonatal immunization in a porcine model.

Abstract:

:Newborn mammals are highly susceptible to respiratory infections. Although maternal antibodies (MatAb) offer them some protection, they may also interfere with their systemic immune response to vaccination. However, the impact of MatAb on the neonatal mucosal immune response remains incompletely described. This study was performed to determine the effect of ovalbumin (OVA) -specific MatAb on the anti- OVA antibody response in sera, nasal secretions and saliva from specific pathogen-free Vietnamese miniature piglets immunized at 7 or 14 days of age. Our results demonstrated that MatAb increased antigen-specific IgA and IgG responses in sera, and transiently enhanced an early secretory IgA response in nasal secretions of piglets immunized at 7 days of age. In contrast, we detected a lower mucosal (nasal secretion and saliva) anti- OVA IgG response in piglets with MatAb immunized at 14 days of age, compared with piglets with no MatAb, suggesting a modulatory effect of antigen-specific maternal factors on the isotype transfer to the mucosal immune exclusion system. In our porcine model, we demonstrated that passive maternal immunity positively modulated the systemic and nasal immune responses of animals immunized early in life. Our results, therefore, open the possibility of inducing systemic and respiratory mucosal immunity in the presence of MatAb through early vaccination.

journal_name

Immunology

journal_title

Immunology

authors

Guzman-Bautista ER,Garcia-Ruiz CE,Gama-Espinosa Al,Ramirez-Estudillo C,Rojas-Gomez OI,Vega-Lopez MA

doi

10.1111/imm.12222

subject

Has Abstract

pub_date

2014-04-01 00:00:00

pages

609-16

issue

4

eissn

0019-2805

issn

1365-2567

journal_volume

141

pub_type

杂志文章