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M9650440.TXT
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1996-03-09
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Document 0440
DOCN M9650440
TI Effect of phosphodiesterase inhibition on IL-4 and IL-5 production of
the murine TH2-type T cell clone D10.G4.1.
DT 9605
AU Schmidt J; Hatzelmann A; Fleissner S; Heimann-Weitschat I; Lindstaedt R;
Szelenyi I; ASTA Medica AG, Department of Pharmacology, Frankfurt/Main,;
Germany.
SO Immunopharmacology. 1995 Sep;30(3):191-8. Unique Identifier : AIDSLINE
MED/96128551
AB The effect of various phosphodiesterase (PDE) inhibitors on anti-CD3
induced interleukin-(IL)-4 and IL-5 production of the murine T helper
cell clone of type 2 phenotype D10.G4.1 (D10) has been investigated in
vitro. D10 cells were incubated in the presence of drugs and anti-CD3
mAb for 16 h before measurement of cytokines in the cell supernatants by
ELISA. Whereas all PDE inhibitors tested exerted minimal effects on
anti-CD3 induced IL-4 production, a marked increase in IL-5 production
by the non-selective PDE inhibitors IBMX, theophylline and enprofylline
was observed. The action of these non-selective PDE inhibitors was
mimicked by the PDE IV-selective inhibitor rolipram and in part by the
PDE III-selective inhibitors motapizone and milrinone, whereas the PDE
V-selective inhibitor zaprinast was inactive. Rolipram and motapizone
enhanced IL-5 production in a synergistic fashion. In support of the
functional importance of PDE III and IV for IL-5 synthesis in intact
murine D10 cells, we have found PDE III and IV to be the predominant
isoenzyme activities in corresponding cell lysates. The stimulatory
effect of rolipram on IL-5 production was almost totally reversed by the
protein kinase A inhibitor KT-5720. In addition, the membrane-permeable
cAMP analogue 8-bromo-cAMP mimicked the stimulatory effect of PDE
inhibitors on IL-5 production while leaving IL-4 levels unaffected. Both
results support the view that the action of the PDE inhibitors on murine
D10 cells is mediated via an elevation of intracellular cAMP.
DE Animal Antibodies, Monoclonal/IMMUNOLOGY Cells, Cultured Clone Cells
Cyclic AMP-Dependent Protein Kinases/ANTAGONISTS & INHIB/ PHYSIOLOGY
Interleukin-4/*BIOSYNTHESIS Interleukin-5/*BIOSYNTHESIS
Isoenzymes/ANTAGONISTS & INHIB Mice Mice, Inbred AKR
Phosphodiesterase Inhibitors/*PHARMACOLOGY Pyridazines/PHARMACOLOGY
Th2 Cells/*DRUG EFFECTS/ENZYMOLOGY/METABOLISM 8-Bromo Cyclic Adenosine
Monophosphate/PHARMACOLOGY JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).