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M9550029.TXT
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1995-03-04
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Document 0029
DOCN M9550029
TI Phenotypic analysis of donor cells infiltrating the small intestinal
epithelium and spleen during graft-versus-host disease.
DT 9505
AU Schattenfroh NC; Hoffman RA; McCarthy SA; Simmons RL; Department of
Surgery, University of Pittsburgh, Pennsylvania; 15261.
SO Transplantation. 1995 Jan 27;59(2):268-73. Unique Identifier : AIDSLINE
MED/95141394
AB One of the principal target organs during graft-versus-host disease
(GvHD) is the intestinal epithelium, although the reasons for the
preferential involvement of particular organs in this disease are not
known. This study analyzed the subset distribution of donor and host
lymphocytes in the small intestinal epithelium and the spleen during
GvHD in a parent (C57BL/6J) into F1 (C57BL/6JxDBA2/J F1) model. While
the donor cell population in the spleen consisted of B and T cells, the
donor cell population in the intestine contained only T cells during the
course of GvHD. These infiltrating donor cells resembled the host
intraepithelial lymphocytes (IELs), which are predominantly CD8+ T
cells. This subset distribution of donor cells in the intestinal
epithelium was remarkable since they originated from a donor splenocyte
population containing few CD8+ lymphocytes. In addition, although the
injected donor splenic T cells were virtually all alpha/beta TCR+,
several months after GvHD induction more than 30% of the donor cells in
the intestine were gamma/delta TCR+, thereby resembling the host IELs
not only in their expression of CD4 and CD8, but also in their TCR
expression. In contrast, no gamma/delta TCR+ donor cells were detectable
in the spleen of GvHD mice. The subset distribution of donor and host
IELs remained constant throughout the disease, while in the spleen a
decrease of both donor and host B cells and a temporary increase of both
donor and host CD8+ cells was observed. These findings demonstrate that
in a given target organ during GvHD the disease process affects both
donor and host lymphoid populations. In addition the different tissue
microenvironments eventually lead to donor cell repopulation with a
subset distribution similar to the host natural lymphoid population of
the particular target organ.
DE Animal B-Lymphocyte Subsets/IMMUNOLOGY Comparative Study CD4-CD8
Ratio CD8-Positive T-Lymphocytes/IMMUNOLOGY Disease Models, Animal
Epithelium/CYTOLOGY/IMMUNOLOGY Graft vs Host
Disease/*IMMUNOLOGY/*PATHOLOGY Intestinal Mucosa/CYTOLOGY/IMMUNOLOGY
Intestine, Small/*CYTOLOGY/*IMMUNOLOGY Lymphocyte Subsets/*IMMUNOLOGY
Male Mice Mice, Inbred C57BL Mice, Inbred DBA Phenotype Receptors,
Antigen, T-Cell, gamma-delta/ANALYSIS/IMMUNOLOGY
Spleen/*CYTOLOGY/*IMMUNOLOGY Support, Non-U.S. Gov't Support, U.S.
Gov't, P.H.S. T-Lymphocyte Subsets/IMMUNOLOGY Tissue Donors JOURNAL
ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).