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| Content Provider | Springer Nature Link |
|---|---|
| Author | Möller, B. Kukoc Zivojv, N. Koyama, N. Grapenthin, S. Kessler, U. Klein, S. A. Kalina, U. Kaltwasser, J. P. Hoelzer, D. Ottmann, O. G. |
| Copyright Year | 2002 |
| Abstract | Objective: Interleukin (IL)-18 is involved in host defense mechanisms and inflammatory diseases, among them rheumatoid arthritis (RA). High levels of IL-18 expression in RA joints are contrasted by reduced IL-18 expression in RA peripheral blood mononuclear cells (PBMC). Here, we investigated a putative IL-18 regulating role of corticosteroids.¶Methods: IL-18 transcript and protein levels in PBMC from untreated and prednisolone treated RA patients, and from healthy donors were assessed by semiquantitative reverse transcriptase polymerase chain reaction (RT-PCR) and immunoblotting. IL-18 regulation was determined in PBMC and U937 cells upon exposure to prednisolone in vitro by RT-PCR and Northern Blot analysis, by ELISA in cell culture supernatants, and in transiently transfected THP-1 cells by IL-18 promoter activity luciferase assays.¶Results: In RA PBMC, IL-18 transcript levels were dose dependently restored, in parallel with administered prednisolone treatment, to subnormal levels. The corresponding intracellular IL-18 deposits in contrast were depleted. In cultured PBMC and promonocytic cell lines, prednisolone up-regulated IL-18 transcription in parallel with increasing the IL-18 protein release into cell culture supernatants.¶Conclusion: Prednisolone increases IL-18 expression and release in PBMC and monocytic cell lines. |
| Starting Page | 457 |
| Ending Page | 463 |
| Page Count | 7 |
| File Format | |
| ISSN | 10233830 |
| Journal | Inflammation Research |
| Volume Number | 51 |
| Issue Number | 9 |
| e-ISSN | 1420908X |
| Language | English |
| Publisher | Birkhäuser Verlag |
| Publisher Date | 2002-09-01 |
| Publisher Place | Basel |
| Access Restriction | One Nation One Subscription (ONOS) |
| Content Type | Text |
| Resource Type | Article |
| Subject | Pharmacology Immunology |
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