IL-19 is involved in the pathogenesis of endotoxic shock

Chung-Hsi Hsing, Chiau Juon Chiu, Lih Yun Chang, Chuan-Chih Hsu, Ming Shi Chang

Research output: Contribution to journalArticlepeer-review

41 Citations (Scopus)

Abstract

IL-19, a proinflammatory cytokine, belongs to the IL-10 family. IL-19 is induced in systemic inflammatory response syndrome, but its pathophysiological function in sepsis is unclear. Our aim was to determine the roles of IL-19 in endotoxin-induced tissue damage in vivo and in vitro. We examined serum levels of IL-19 in sepsis patients and healthy volunteers, determined the in vitro effects of IL-19 on lung epithelial cells, liver cells, and neutrophils, and analyzed the tissue expression of IL-19 and its receptors in murine endotoxic shock. Electroporation-mediated gene transfer of mouse IL-19-soluble receptor plasmid DNA was used to determine the effects of IL-19 depletion in preventing endotoxic shock-induced tissue damage in mice. We found that serum levels of IL-19 were higher in patients than in healthy volunteers (n = 28, P = 0.001). IL-19 induced apoptosis in lung epithelial cells and reactive oxygen species production in liver cells in vitro. IL-19 also promoted neutrophil chemotaxis, reduced neutrophil apoptosis, and induced the production of proinflammatory cytokines and chemokines (IL-1β, IL-6, IL-8, CCL5, and CXCL9) in lung epithelial cells. In LPS-challenged mice, transcripts of IL-19 and its receptors were up-regulated in heart, lung, liver, and kidney tissue. Neutrophil infiltration in lung and liver tissue, and serum levels of alanine transaminase and aspartate transaminase, were lower in mice electroporated with IL-19-soluble receptor plasmid DNA before LPS treatment compared with control mice. These results suggest that up-regulated IL-19 may be involved in lung and liver tissue injury in murine endotoxic shock.

Original languageEnglish
Pages (from-to)7-15
Number of pages9
JournalShock
Volume29
Issue number1
DOIs
Publication statusPublished - Jan 2008

Keywords

  • Cytokines
  • Endotoxin
  • IL-19
  • Sepsis
  • Septic shock
  • Systemic inflammatory response syndrome

ASJC Scopus subject areas

  • Critical Care and Intensive Care Medicine
  • Physiology

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