Abstract:
:The authors examined the antibody responses of mice orally immunized with pneumococcal polysaccharide (type 23F) or a pneumococcal polysaccharide conjugated to the outer membrane protein complex of Neisseria meningitides (23F-OMPC). These antigens were administered either in solution or entrapped within microcapsules. Only the mice receiving the encapsulated conjugate vaccine produced significant levels of anti-polysaccharide serum antibodies. These responses, observed after a second oral immunization with the conjugate, were predominantly IgG. Thus, the conversion from a T-cell-independent to a T-cell dependent response, achieved through conjugation was maintained following oral delivery. However, no local secretory IgA anti-polysaccharide response was detected in these mice indicating that while the OMPC carrier augments orally induced IgG responses, it was insufficient for the induction of secretory IgA.
journal_name
Vaccinejournal_title
Vaccineauthors
Flanagan MP,Michael JGdoi
10.1016/s0264-410x(98)00118-2subject
Has Abstractpub_date
1999-01-01 00:00:00pages
72-81issue
1eissn
0264-410Xissn
1873-2518pii
S0264-410X(98)00118-2journal_volume
17pub_type
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