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M9630697.TXT
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1996-02-27
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Document 0697
DOCN M9630697
TI Loss of CD4 T lymphocytes in patients infected with human
immunodeficiency virus type 1 is more pronounced in the duodenal mucosa
than in the peripheral blood. Berlin Diarrhea/Wasting Syndrome Study
Group.
DT 9603
AU Schneider T; Jahn HU; Schmidt W; Riecken EO; Zeitz M; Ullrich R;
Department of Medicine, Klinikum Benjamin Franklin, Free; University of
Berlin.
SO Gut. 1995 Oct;37(4):524-9. Unique Identifier : AIDSLINE MED/96097882
AB Although changes in T lymphocyte subset distribution in the peripheral
blood of patients infected with human immunodeficiency virus (HIV) are
well defined it is not known whether these changes reflect changes in
lymphoid compartments clearly involved in HIV related disease like the
intestinal mucosa. This study analysed lymphocytes isolated
simultaneously from the peripheral blood and duodenal biopsy specimens
by three colour flow cytometry in eight asymptomatic HIV infected
patients, 26 AIDS patients, and 23 controls. The proportion of CD4, CD8,
CD4-CD8-, or gamma delta T cells did not correlate between circulating
and duodenal T cells. CD4 T cells were reduced in the peripheral blood
(7.5% (25th-75th percentile, 2-16%) v 52% (41-63%), p < 0.0005) and even
more reduced in the duodenum (1% (1-2%) v 36% (23-57%), p < 0.0005) of
AIDS patients compared with controls. Patients with asymptomatic HIV
infection had intermediate CD4 T cells in the peripheral blood (24%
(22-35%); p < 0.002 v controls; p < 0.01 v AIDS) but like AIDS patients
very low CD4 T cells in the duodenum (3% (1-6%); p < 0.002 v controls).
The ratio of duodenal to circulating CD4+ T cells was significantly
reduced to 0.2 (0-1) in AIDS patients (p < 0.001) and even to 0.1
(0.04-0.5) in asymptomatic HIV infected patients (p < 0.002) compared
with 0.72 (0.44-0.95) in controls. These findings show an early and
preferential loss of duodenal CD4 T cells in HIV infection.
Immunological abnormalities in HIV infection are distinct between
lymphoid compartments, and profound immunodeficiency may occur in the
intestinal immune system although circulating T cells are largely
preserved.
DE Acquired Immunodeficiency Syndrome/IMMUNOLOGY Adult Aged Comparative
Study CD4 Lymphocyte Count CD4-Positive T-Lymphocytes/*IMMUNOLOGY
Duodenum/IMMUNOLOGY Female Flow Cytometry Human HIV
Infections/*IMMUNOLOGY *HIV-1 Immunophenotyping Intestinal
Mucosa/*IMMUNOLOGY Male Middle Age Support, Non-U.S. Gov't JOURNAL
ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).