Peyer's patches in murine AIDS: dissociation between lymphoproliferation and anergy.

Détails

ID Serval
serval:BIB_8119142CD7D1
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Peyer's patches in murine AIDS: dissociation between lymphoproliferation and anergy.
Périodique
Scandinavian Journal of Immunology
Auteur(s)
Colombi S., Moutschen M., de Leval L., Demoitié M.A., Trebak M., Martin M.T., Boniver J.
ISSN
0300-9475[print], 0300-9475[linking]
Statut éditorial
Publié
Date de publication
1997
Volume
45
Numéro
2
Pages
175-181
Langue
anglais
Résumé
RadLV-Rs infection induces a murine immunodeficiency syndrome associated with a dramatic enlargement of spleen and lymph nodes. Surprisingly, the lymphoproliferation excludes thymus and Peyer's patches (PP). To understand the cellular interactions underlying lymphoproliferation further, the authors investigated the fate of PP in RadLV-Rs infected mice. The atrophy of PP was mostly due to the depletion of B cells, while the proportion of CD4+ and CD8+ T cells was increased. Nevertheless, B cell phenotype was modified with the emergence of lymphocytes with a low expression of B220 in infected PP. T cells characterized by a memory/activated phenotype in control PP did not undergo phenotypical changes after viral infection (i.e. regarding Thy-1 and CD44 expression). Despite the absence of lymphoproliferation, PP T and B cells displayed altered responses to mitogens in vitro. Finally, alterations of the expression of adhesion molecules and vascular addressins could not explain the atrophy of PP by a reduced homing to this lymphoid site. B cells and T cells from normal PP are clearly different from lymph nodes (LN) lymphocytes. The authors propose that the particular functional state which characterizes PP lymphocytes influences the B cell/T cell crosstalk necessary for RadLV-Rs-induced lymphoproliferation.
Mots-clé
Animals, Antigens, CD44/biosynthesis, Antigens, CD45/biosynthesis, Antigens, Thy-1/biosynthesis, B-Lymphocytes/immunology, CD4-Positive T-Lymphocytes/immunology, CD8-Positive T-Lymphocytes/immunology, Cell Adhesion Molecules, Flow Cytometry, Immune Tolerance, Immunoglobulins/biosynthesis, Immunohistochemistry, Integrins/biosynthesis, L-Selectin/biosynthesis, Lymph Nodes/immunology, Lymphocyte Activation, Lymphocyte Count, Lymphocyte Function-Associated Antigen-1/biosynthesis, Male, Mice, Mice, Inbred C57BL, Mucoproteins/biosynthesis, Murine Acquired Immunodeficiency Syndrome/immunology, Peyer's Patches/immunology, Proviruses/genetics, T-Lymphocytes/immunology
Pubmed
Création de la notice
29/10/2010 8:54
Dernière modification de la notice
03/03/2018 18:47
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