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M9550102.TXT
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1995-03-04
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Document 0102
DOCN M9550102
TI Prostaglandin-E2 is a potent inhibitor of human interleukin 12
production.
DT 9505
AU van der Pouw Kraan TC; Boeije LC; Smeenk RJ; Wijdenes J; Aarden LA;
Department of Autoimmune Diseases, Central Laboratory of the;
Netherlands Red Cross Blood Transfusion Service, Amsterdam.
SO J Exp Med. 1995 Feb 1;181(2):775-9. Unique Identifier : AIDSLINE
MED/95138710
AB During human immunodeficiency virus infection and allergic diseases,
characterized by a dominant T helper (Th) 2 response, overproduction of
prostaglandin E2 (PGE2) is observed. In this paper we studied the effect
of PGE2 on interleukin (IL)-12 synthesis, because this cytokine has been
described to be essential in induction of Th1 responses. IL-12 synthesis
was induced in monocytes that were stimulated with Neisseria
meningitidis-derived lipopolysaccharide in whole blood cultures. PGE2
almost completely inhibited lipopolysaccharide induced IL-12 production,
whereas IL-6 production was only partially inhibited by PGE2. In
contrast, the production of IL-10 was approximately twofold enhanced at
these conditions. The effects of PGE2 were due to its cAMP-inducing
capacity, since they could be mimicked by other cAMP inducers.
Recombinant human IL-10 also inhibited IL-12 and IL-6 production.
However, the inhibitory effect of PGE2 on IL-12 production was
independent of IL-10 since neutralizing anti-IL-10 antibodies were
unable to reverse this inhibition. These results suggest that the
capacity of an antigen to induce PGE2 synthesis may play a crucial role
in the development of either a Th1 or Th2 response.
DE Cyclic AMP/METABOLISM/PHARMACOLOGY Dinoprostone/*PHARMACOLOGY Human
In Vitro Interleukin-10/BIOSYNTHESIS Interleukin-12/*ANTAGONISTS &
INHIB/BIOSYNTHESIS Interleukin-6/BIOSYNTHESIS
Lipopolysaccharides/PHARMACOLOGY 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).