Abstract:
:We have investigated the effects of intravenous immunoglobulin (IVIg), a therapeutic preparation of normal human polyspecific IgG, on the synthesis and release of cytokines by peripheral blood monocytes. IVIg was found to selectively induce gene transcription and secretion of interleukin-1 receptor antagonist (IL-1ra) and IL-8 in cultures of normal human monocytes. The addition of IVIg to cultures of purified monocytes induced a dose-dependent secretion of IL-1ra and IL-8 without stimulating the production of IL-1 alpha, IL-1 beta, tumor necrosis factor-alpha or IL-6. The effects of IVIg required both the Fc and F(ab')2 portions of IgG. IVIg-induced production of IL-8 by monocytes was enhanced by lipopolysaccharide (LPS), although LPS inhibited the secretion of IL-1ra, suggesting that IVIg and LPS stimulate distinct intracellular pathways in monocytes. Induction of IL-1ra and IL-8 by IVIg was enhanced in the presence of autologous T lymphocytes. Our observations document the selectivity of the effects of IVIg on the synthesis of cytokines and cytokine antagonists by human monocytes. Induction of IL-1ra and IL-8 by IVIg may contribute to the anti-inflammatory effects of immunoglobulin therapy in patients with autoimmune and systemic inflammatory disorders.
journal_name
Eur J Immunoljournal_title
European journal of immunologyauthors
Ruiz de Souza V,Carreno MP,Kaveri SV,Ledur A,Sadeghi H,Cavaillon JM,Kazatchkine MD,Haeffner-Cavaillon Ndoi
10.1002/eji.1830250521subject
Has Abstractpub_date
1995-05-01 00:00:00pages
1267-73issue
5eissn
0014-2980issn
1521-4141journal_volume
25pub_type
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journal_title:European journal of immunology
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