AIDS Res Hum Retroviruses. 1999 Aug 10;15(12):1121-36. Unique Identifier
We determined the efficacy of immunization with microsphere-encapsulated
whole inactivated simian immunodeficiency virus (SIV) by combined
systemic and mucosal administration to protect female rhesus macaques
against vaginal challenge with homologous rhesus PBMC-grown SIVmac251.
Animals in one group were primed and boosted intramuscularly. Two groups
were primed intramuscularly and boosted either intratracheally or
orally. A final group was primed by vaccinia/rgp140 scarification and
subdivided for either intratracheal or oral boosting. Strong ELISA
titers of circulating SIV-specific IgG and modest IgA responses were
elicited in the animals primed intramuscularly. Intratracheal boosting
in the intramuscularly primed macaques resulted in high bronchial
alveolar wash (BAW) IgG and less pronounced IgA. SIV-specific vaginal
wash (VW) IgG was also present in the intramuscular/intramuscular and
intramuscular/intratracheal groups. Vaccinia/rgp140 priming gave low
ELISA titers to whole SIV, and failed to elicit mucosal antibody
regardless of the booster route. No animal in any group developed serum
neutralizing antibody to homologous SIVmac251. On vaginal challenge none
of the immunized groups was infected at a lesser frequency than the
unimmunized controls. These data suggest that the use of microspheres in
a combined parenteral and mucosal regimen is an effective method of
eliciting IgG and IgA antibody at mucosal surfaces.
JOURNAL ARTICLE Animal Antibodies, Viral/*BIOSYNTHESIS/BLOOD
Enzyme-Linked Immunosorbent Assay Female Immunity, Mucosal Macaca
mulatta Microspheres Neutralization Tests Support, U.S. Gov't, P.H.S.
SIV/*IMMUNOLOGY Trachea/*IMMUNOLOGY Vagina/*IMMUNOLOGY Viral
Vaccines/*ADMINISTRATION & DOSAGE