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1996-02-27
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Document 0379
DOCN M9630379
TI Alteration of spleen lymphocyte populations in rats with arthritis
induced by muramyl dipeptide analogue or complete adjuvant.
DT 9603
AU Sugawara T; Miyamoto M; Takada S; Nomura M; Kato M; Drug Safety Research
Center, Daiichi Pharmaceutical Co., Ltd.,; Tokyo, Japan.
SO Int J Tissue React. 1995;17(1):5-13. Unique Identifier : AIDSLINE
MED/96020392
AB To examine the involvement of lymphocytes in the development of
MDP-Lys(L18)-induced arthritis (MIA) in rats and the exacerbation of MIA
by cyclosporin A (CsA), we analysed the spleen lymphocyte subset using
monoclonal antibodies and flow cytometry during the development of
arthritis and compared the results with those found in adjuvant-induced
arthritis (AIA). Subcutaneous injection of MDP-Lys(L18) 4 mg/kg to male
Lewis rats for 14 days caused very slight and quite clear increases in
tarsal joint thickness on days 8 and 15, respectively. This increase was
significantly enhanced by co-administration of CsA 10 mg/kg on both of
these days. Adjuvant intracutaneously injected once increased the
thickness only on day 15, and this was completely inhibited by CsA. The
populations of CD4+ and CD8+ cells were increased and decreased,
respectively, increasing the CD4+/CD8+ ratio, from day 8 in MIA. CsA
enhanced the MDP-Lys(L18)-induced changes in these populations and
caused additional decreases in the number of CD5+ cells. Only the CD4+
cell population was increased on day 15 in AIA, and this increase was
inhibited by CsA. These results suggest that the spleen lymphocyte
subsets in MIA have a different role from those in AIA, and that the
contribution of enhancement of the subset changes to the exacerbating
effect of CsA on MIA.
DE Acetylmuramyl-Alanyl-Isoglutamine/ANALOGS & DERIVATIVES Adjuvants,
Immunologic Animal Antibodies, Monoclonal Arthritis,
Adjuvant/*PATHOLOGY Cyclosporine/*TOXICITY CD4-CD8 Ratio Flow
Cytometry Lymphocyte Subsets/*DRUG EFFECTS Male Rats Rats, Inbred
Lew Spleen/CYTOLOGY/*DRUG EFFECTS Tarsus, Animal/PATHOLOGY JOURNAL
ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).