title: Antigen-specific B cells in tissues after oral typhoid vaccination.
abstract: Six human subjects who were to receive elective bowel surgery for a variety of diseases were vaccinated with the oral typhoid vaccine, Ty21a. Intestinal tissue (ileum in two, large intestine in four) removed 7-26 days after the first dose of vaccine was examined for the presence and distribution of antigen-specific B cells. This was compared with intestinal tissue derived from two unvaccinated controls. A number of B cell differentiation antigens were also assessed on these cells by immunofluorescence using dual-labelling. Antigen-specific cells were found randomly distributed in the lamina propria of all the vaccinated subjects in low frequency (6 +/- 0.5 to 37 +/- 31 [mean +/- s.e.m.] antigen specific cells/10 mm2 of tissue). The lymphocyte differentiation antigens CD45RA, CD45RO, L-selectin, CD-11a CD-38, CD-44 and VLA-4 were all found on antigen-specific cells, but no particular pattern was recognizable in this small series of six subjects with different disease processes affecting the intestine.
authors.affiliation: Department of Medicine, Royal Adelaide Hospital, South Australia.
authors.forename: C E
authors.initials: CE
authors.lastname: Gibson
authors.forename: I A
authors.initials: IA
authors.lastname: Penttila
authors.forename: A S
authors.initials: AS
authors.lastname: Leong
authors.forename: H
authors.initials: H
authors.lastname: Zola
authors.forename: J T
authors.initials: JT
authors.lastname: Labrooy
mesh_terms: D000284:Administration, Oral; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001402:B-Lymphocytes / Q000276:immunology*; D005260:Female; D006801:Humans; D007422:Intestines / Q000276:immunology* / Q000473:pathology; D008297:Male; D008856:Microscopy, Fluorescence; D008875:Middle Aged; D014436:Typhoid-Paratyphoid Vaccines / Q000008:administration & dosage / Q000276:immunology*
chemical_list: D014436:Typhoid-Paratyphoid Vaccines