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The distribution of lymphoid cells in the small intestine of germ-free and conventional piglets.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Potockova, Hana Sinkorova, Jana Karova, Kristyna Sinkora, Marek
Description	Country affiliation: Czech Republic Author Affiliation: Potockova H ( Laboratory of Gnotobiology, Institute of Microbiology of the Czech Academy of Sciences, v.v.i., Novy Hradek 54922, Czech Republic.); Sinkorova J ( Laboratory of Gnotobiology, Institute of Microbiology of the Czech Academy of Sciences, v.v.i., Novy Hradek 54922, Czech Republic.); Karova K ( Laboratory of Gnotobiology, Institute of Microbiology of the Czech Academy of Sciences, v.v.i., Novy Hradek 54922, Czech Republic.); Sinkora M ( Laboratory of Gnotobiology, Institute of Microbiology of the Czech Academy of Sciences, v.v.i., Novy Hradek 54922, Czech Republic. Electronic address: Marek.Sinkora@worldonline.cz.)
Abstract	Porcine ileum is populated with a high proportion of B cells but previous studies have shown that they are not developed there. While B cells prevail in the ileum even in germ-free animals, microbial colonization is a major factor that causes even a greater prevalence of B cells in the ileum and further differential representation of lymphoid cells throughout small intestine. Analysis of lymphoid subpopulations showed that the effector cells appear only after colonization. These include class-switched IgM(+)IgA(+) B cells, primed CD2(-)CD21(+) B cells, antibody-producing/memory CD2(+)CD21(-) B cells, and effector/memory CD4(+)CD8(+) ß Th cells. While colonization resulted in a uniform distribution of effector cells throughout the gut, it caused a decrease in the frequency of cytotoxic ß and CD2(+)CD8(+) Î³Î´ T cells. These results suggest that the ileum is a site where naive B cells expand presumably to increase antibody repertoire but the entire small intestine is immunofunctionally comparable.
File Format	HTM / HTML
ISSN	0145305X
Issue Number	1
Volume Number	51
e-ISSN	18790089
Journal	Developmental & Comparative Immunology
Language	English
Publisher	Elsevier
Publisher Date	2015-07-01
Publisher Place	United States
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Discipline Immunology B-lymphocyte Subsets Immunology B-lymphocytes Ileum Receptors, Antigen, T-cell, Gamma-delta Metabolism Sus Scrofa T-lymphocytes, Cytotoxic T-lymphocytes, Helper-inducer Animals Antigens, Cd Microbiology Bacteria Growth & Development Germ-free Life Immunoglobulin Class Switching Immunologic Memory Immunophenotyping Lymphocyte Activation Microbiota Receptors, Antigen, T-cell, Alpha-beta Journal Article Research Support, Non-u.s. Gov't
Content Type	Text
Resource Type	Article
Subject	Developmental Biology Immunology

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