Abstract：
:Immunoglobulin D (IgD) is normally present in only low concentrations in serum. In the hyper-IgD and periodic fever syndrome (HIDS), however, serum levels exceed 140 mg/l. This syndrome is further characterized by recurrent inflammatory febrile attacks together with an acute phase response and appearance of cytokines in the circulation. The role of IgD in the pathogenesis of HIDS and its relation to the increased cytokine concentrations is unclear. Therefore, we tested whether IgD, IgG and alpha 1-acid glycoprotein (AGP) isolated from human serum influence the synthesis of interleukin-1 beta (IL-1 beta), tumour necrosis factor-alpha (TNF-alpha), and IL-1ra, as measured by specific radioimmunoassays, in human peripheral blood mononuclear cells (PBMC). Incubation of PBMC with IgD and AGP for 24 hr led to increased release of IL-1 beta, TNF-alpha, and IL-lra. The magnitude of stimulation of IgD exceeded that of AGP; the effect by IgD was dose-dependent and showed a 30-fold (TNF-alpha) to almost 150-fold (IL-1 beta) increase at the highest concentration (50 mg/l), while AGP (750 micrograms/ml) only increased the cytokine secretion fourfold (TNF-alpha) to almost 30-fold (IL-1 beta). The effect of IgD on IL-1ra was less dramatic but a fivefold increase was observed at 50 mg/l compared with a 2.5-fold increase with AGP. IgD potentiated the effect of lipopolysaccharide (LPS) on secretion of both IL-1 beta and TNF-alpha, although the effect was most apparent for TNF-alpha. Apart from inducing IL-1ra synthesis, IgG did not influence cytokine release in human PBMC. These data indicate that IgD is a potent inducer of TNF-alpha, IL-1 beta and IL-1ra and thus may contribute to the pathogenesis of HIDS.
journal_name
Immunologyjournal_title
Immunologyauthors
Drenth JP,Göertz J,Daha MR,van der Meer JWdoi
10.1046/j.1365-2567.1996.d01-672.xsubject
Has Abstractpub_date
1996-07-01 00:00:00pages
355-62issue
3eissn
0019-2805issn
1365-2567journal_volume
88pub_type
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