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M9620809.TXT
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1996-02-26
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Document 0809
DOCN M9620809
TI The effects of FK506 and dexamethasone on rat thymocyte differentiation.
DT 9602
AU Tsuchida M; Takai K; Jojima K; Naito K; Fujikura Y; Fukumoto T;
Department of Urology, Yamaguchi University School of Medicine,; Japan.
SO Ther Immunol. 1994 Jun;1(3):135-41. Unique Identifier : AIDSLINE
MED/96053297
AB We investigated the effects of FK506 and glucocorticoids (GC) on rat
thymocytes using flow cytofluorometry. Rats were treated with GC (0.1
mg/body, by single injection), with FK506 (1 mg/kg/day, for 7 days), or
with FK506 and GC. GC alone significantly decreased the percentage of
CD4+8+ thymocytes and increased the percentages of CD4-8-, CD4+8- and
CD4-8+ thymocytes on day 7. FK decreased the percentage of CD4+8- and
CD4-8+ thymocytes and increased the percentage of CD4+8+ thymocytes on
days 5 to 14. FK and GC induced a significant decrease in the number of
CD4+8+ thymocytes greater than that seen with GC alone on day 7. The
absolute number of TCR alpha beta high MHC class Ihigh thymocytes after
FK and GC was significantly lower than that of the control group, and
was slightly lower than that after FK alone on day 14. These results
suggest that combined treatment with FK506 and GC acts complexly to
decrease rat CD4+8+ thymocytes and prevents thymocyte differentiation
and maturation.
DE Animal Body Weight/DRUG EFFECTS Cell Differentiation/DRUG EFFECTS
CD4-Positive T-Lymphocytes/CYTOLOGY CD8-Positive T-Lymphocytes/CYTOLOGY
Dexamethasone/PHARMACOLOGY Flow Cytometry Histocompatibility Antigens
Class I/METABOLISM Immunosuppressive Agents/*PHARMACOLOGY Male Rats
Rats, Inbred Lew Receptors, Antigen, T-Cell, alpha-beta/METABOLISM
T-Lymphocyte Subsets/*CYTOLOGY Tacrolimus/*PHARMACOLOGY Thymus
Gland/*CYTOLOGY JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).