Expression of IL-19 correlates with Th2 cytokines in uraemic patients

Chung-Hsi Hsing, Chuan-Chih Hsu, Wei Yu Chen, Lih Yun Chang, Jyh Chang Hwang, Ming Shi Chang

Research output: Contribution to journalArticlepeer-review

32 Citations (Scopus)

Abstract

Background. Patients with end-stage renal disease are thought to be in a chronic state of inflammation. They also have an impaired immune response with a dysregulated Th1/Th2 cytokine network. Interleukin (IL)-19, which belongs to the IL-10 family, is a newly discovered proinflammatory cytokine. IL-19 alters the balance of Th1/Th2 cells in favour of Th2. The aims of the present study were to assess the changes in serum levels of IL-19 and their correlation with Th2 cytokine production in uraemic patients. Methods. Seventy-three uraemic patients with haemodialysis were evaluated; 33 healthy volunteers served as controls. Serum levels of IL-19, -4, -5, -6, -10, -13 and tumour necrosis factor (TNF)-α were analysed using ELISA. Monocytes and T cells isolated from the patients and healthy volunteers were cultured in vitro, and cytokine production was determined. Results. IL-19 expression in the patients; but not in healthy controls, correlated positively with both the proinflammatory cytokines (IL-6 and TNF-α) and the Th2 cytokines (IL-4, IL-5, IL-6, IL-10 and IL-13). Cultured monocytes from patients with high IL-19 serum levels produced more IL-19 in vitro. Additionally, uraemic serum or oxidized low-density lipoproteins up-regulated the IL-19 transcripts expression in resting monocytes. Compared with T cells from healthy controls, uraemic T cells expressed more endogenous Th2 cytokine transcripts and further responded to IL-19 stimulation in Th2 cytokine production in vitro. Conclusions. IL-19 expression in uraemic patients correlated with Th2 immune responses which might be involved in the cytokine dysregulation in uraemia.

Original languageEnglish
Pages (from-to)2230-2238
Number of pages9
JournalNephrology Dialysis Transplantation
Volume22
Issue number8
DOIs
Publication statusPublished - Aug 2007

Keywords

  • Cytokines
  • Haemodialysis
  • Interleukin-19
  • Uraemia

ASJC Scopus subject areas

  • Nephrology
  • Transplantation

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