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1996-02-26
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Document 0595
DOCN M9620595
TI The effect of 2-acetyl-4-tetrahydroxybutylimidazole on lymphocyte
subsets during a contact hypersensitivity response in the NOD mouse.
DT 9602
AU Gugasyan R; Losinno C; Mandel T; Walter and Eliza Hall Institute of
Medical Research, Parkville,; Victoria, Australia.
SO Immunol Lett. 1995 Jun;46(3):221-7. Unique Identifier : AIDSLINE
MED/96089928
AB The compound 2-acetyl-4-tetrahydroxybutylimidazole (THI) is known to
suppress a contact hypersensitivity (CH) response. The effect of THI on
lymphocyte subsets during treatment and in a CH response has not been
shown in mice. To further define the immunosuppressive potential of THI,
a time-course study during the CH response to oxazolone (OX) was
performed. While THI can prevent the induction of CH, if treatment is
started before sensitization, it has a low therapeutic capability since
it could not significantly inhibit the response when continuous oral
treatment was commenced during the course of CH. We report that during
this response continuous oral treatment of non-obese diabetic (NOD) mice
with THI reduced the number of CD4+ and CD8+ T cells in the peripheral
blood. In the draining lymph nodes THI treatment had no effect on
lymphocyte subsets prior to contact sensitization, but subsequent
sensitization and elicitation with OX could not stimulate a significant
increase in the number of CD4+ T cells in the treated mice, whereas
untreated control mice showed elevated numbers of these lymphocytes.
These findings suggest that THI can inhibit an CH response by preventing
the recruitment of CD4+ T cells in the draining lymph nodes through an
unknown mechanism.
DE Animal Cell Count CD4-Positive T-Lymphocytes/DRUG EFFECTS
CD8-Positive T-Lymphocytes/DRUG EFFECTS Dermatitis, Contact/BLOOD/DRUG
THERAPY/*IMMUNOLOGY Female Imidazoles/*PHARMACOLOGY/THERAPEUTIC USE
Immunosuppressive Agents/*PHARMACOLOGY/THERAPEUTIC USE Lymph Nodes/DRUG
EFFECTS Lymphopenia/CHEMICALLY INDUCED Mice Mice, Inbred NOD
Support, Non-U.S. Gov't T-Lymphocyte Subsets/*DRUG EFFECTS JOURNAL
ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).