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Apoptotic cell-free DNA promotes inflammation in haemodialysis patients.
MedLine Citation:
PMID:  22167588     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
BACKGROUND: A proinflammatory environment characterized by the continuous activation of the innate immune system is thought to contribute to the markedly elevated mortality in haemodialysis (HD) patients with end-stage renal disease (ESRD). The presence of circulating cell-free DNA (cfDNA) has been demonstrated as biomarker in many pathologies.METHODS: We evaluated the occurrence of cfDNA in HD patients and its functional relevance for innate immunity and inflammation.RESULTS: Here, we found that cfDNA was enhanced in the plasma of ESRD patients after HD compared to healthy controls. Functionally, cfDNA selectively stimulated the production of the proinflammatory cytokine interleukin (IL)-6 by human monocytes, whereas tumour necrosis factor-α or IL-10 was not induced. Conversely, plasma from HD patients, but not from healthy controls or DNase I-treated HD plasma, induced IL-6 production from monocytes.CONCLUSION: We provide the first evidence that cfDNA has selective immunostimulatory effects on human monocytes. This process may contribute to the proinflammatory milieu observed in HD patients.
Authors:
Johanna Atamaniuk; Chantal Kopecky; Sonja Skoupy; Marcus D Säemann; Thomas Weichhart
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-12-13
Journal Detail:
Title:  Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association     Volume:  -     ISSN:  1460-2385     ISO Abbreviation:  -     Publication Date:  2011 Dec 
Date Detail:
Created Date:  2011-12-14     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8706402     Medline TA:  Nephrol Dial Transplant     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
1Institute of Laboratory Diagnostics, Kaiser Franz Josef Hospital, Vienna, Austria.
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