title: Ring-like distribution of IgG-containing cells around the lymph follicle in the human intestine.
abstract: Immunoglobulin (Ig)-containing cells were studied in the lamina propria of the normal human large bowel and around the lymph follicle, including Peyer's patches, in the normal intestine. Ig-containing cells were identified by the indirect immunoperoxidase staining method, using mouse anti-human Ig monoclonal antibodies. In the lamina propria in the large bowel, the mean percentage of IgA+ (IgA1+ cells and IgA2+ cells), IgM+, IgD+, IgG+ and IgE+ cells was 75.9, 8.5, 7.3, 5.8, 2.5, respectively (total 100), namely there was a marked preponderance of IgA+ cells in comparison to IgG+ cells. However, IgG+ cells were observed not only on the epithelial but also in the serosal side of lymph follicles, showing a ring-like pattern. Ig+ cells of the other four classes did not show such a pattern. The ring-like distribution of IgG+ cells around lymph follicles was observed in both the large and small intestine including Peyer's patches. This tendency was observed in 9 out of 14 follicles (64.3 per cent). A large number of IgG+ cells were observed outside lymph follicles, while a small number of IgG+ cells were observed at the most outer rim of lymph follicles which suggested a local maturation of IgG+ cells. The significance and the role of the newly recognized IgG+ cells in the vicinity of lymph follicles remain to be resolved.
authors.affiliation: First Department of Internal Medicine, Akita University School of Medicine, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Chiba
authors.forename: H
authors.initials: H
authors.lastname: Ohta
authors.forename: M
authors.initials: M
authors.lastname: Iizuka
authors.forename: O
authors.initials: O
authors.lastname: Masamune
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D007082:Ileum / Q000276:immunology; D007124:Immunoenzyme Techniques; D007071:Immunoglobulin A, Secretory / Q000032:analysis; D007072:Immunoglobulin D / Q000032:analysis; D007073:Immunoglobulin E / Q000032:analysis; D007074:Immunoglobulin G / Q000032:analysis*; D007075:Immunoglobulin M / Q000032:analysis; D007413:Intestinal Mucosa / Q000276:immunology*; D007420:Intestine, Large / Q000276:immunology; D008198:Lymph Nodes / Q000276:immunology*; D008297:Male; D008875:Middle Aged
chemical_list: D007071:Immunoglobulin A, Secretory; D007072:Immunoglobulin D; D007074:Immunoglobulin G; D007075:Immunoglobulin M; D007073:Immunoglobulin E