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M9630033.TXT
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1996-02-27
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Document 0033
DOCN M9630033
TI Genital-associated lymphoid tissue in female non-human primates.
DT 9603
AU Lehner T; Panagiotidi C; Bergmeier LA; Tao L; Brookes R; Gearing A;
Adams S; Department of Immunology, UMDS of Guy's Hospital, London,
United; Kingdom.
SO Adv Exp Med Biol. 1995;371A:357-65. Unique Identifier : AIDSLINE
MED/96001537
AB We investigated genital-associated lymphoid tissue (GENALT) in non-human
primates (macaques), by augmenting vaginal with oral immunization. The
vaccine was a recombinant particulate SIV antigen (p27:Ty-VLP), linked
to CT-B, and administered into the vagina by a paediatric naso-gastric
tube and into the stomach by a gastric tube. Oro-vaginal or vagino-oral
sequence of immunization elicited specific CD4+ T cell proliferative
responses to p27 antigen in the genital lymph nodes and the spleen but
not in unrelated lymph nodes. CD4+ T cells reconstituted with B cells
and macrophages from the genital lymph nodes induced specific IgA and to
a lesser extent IgG anti-p27 antibodies. However, the corresponding
splenic cells induced greater IgG than IgA antibody synthesis.
Intramuscular immunization primed splenic but not genital lymph node
cells, and induced CD4+ T cell proliferative responses and predominantly
B cell IgG antibody synthesis. Finding primed B and T cells in the
genital lymph nodes after augmenting vaginal by oral immunization
provides experimental evidence for GENALT in non-human primates. This
primate model of vaginal immunization suggests 3 levels of specific
immunity: (1) secretory IgA (and IgG) in the cervico-vaginal mucosal
epithelium; (2) primed CD4+ T cells and B cells in the genital lymph
nodes and the spleen; and (3) circulating CD4+ T cells, B cells and IgG
and IgA antibodies specific to the immunizing antigen.
DE Administration, Intravaginal Administration, Oral Animal Antibody
Formation Antibody Specificity Cervix Uteri/*IMMUNOLOGY Cholera
Toxin/ADMINISTRATION & DOSAGE/GENETICS/IMMUNOLOGY Female Gene
Products, gag/ADMINISTRATION & DOSAGE/GENETICS/*IMMUNOLOGY
IgA/BIOSYNTHESIS IgG/BIOSYNTHESIS Lymph Nodes/IMMUNOLOGY Lymphocyte
Cooperation Lymphocyte Subsets/*IMMUNOLOGY Lymphoid Tissue/*IMMUNOLOGY
Macaca fascicularis/*IMMUNOLOGY Macaca mulatta/*IMMUNOLOGY
Macrophages/IMMUNOLOGY Retrotransposons/GENETICS Spleen/IMMUNOLOGY
SIV/GENETICS/*IMMUNOLOGY Vaccination/*METHODS Vaccines,
Synthetic/*ADMINISTRATION & DOSAGE/IMMUNOLOGY Vagina/*IMMUNOLOGY
Vibrio cholerae/IMMUNOLOGY Viral Vaccines/*ADMINISTRATION &
DOSAGE/IMMUNOLOGY JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).