NDLI: Origin of Circulating Free DNA in Sepsis: Analysis of the CLP Mouse Model

Content Provider	PubMed Central
Author	Hamaguchi, Shigeto Akeda, Yukihiro Yamamoto, Norihisa Seki, Masafumi Yamamoto, Kouji Oishi, Kazunori Tomono, Kazunori
Copyright Year	2015
Abstract	Recently, it has been reported that circulating free DNA (cf-DNA) in the blood is increased in various infectious diseases, including sepsis. Moreover, a relationship between cf-DNA and neutrophil extracellular traps (NETs) has been suggested. However, it is still unclear what the source and physiological role of cf-DNA in sepsis are. In this study, we examined the source of cf-DNA by detecting citrullinated histone H3, a characteristic feature of NET formation, in cecal ligation and puncture- (CLP-)operated mice. In addition, neutrophil depletion using anti-Ly6G antibodies was performed to assess the association between neutrophils and cf-DNA. Increased cf-DNA levels were observed only in CLP mice and not in the control groups; the qPCR findings revealed that the cf-DNA was mainly host-derived, even in bacteremic conditions. Citrullinated histone H3 was not increased in the neutrophils upon CLP, and the depletion of neutrophils showed limited effects on decreasing the amount of cf-DNA. Taken together, these results suggested that elevated cf-DNA levels during early-phase sepsis may represent a candidate biomarker for the severity of sepsis and that, contrary to previous findings, cf-DNA is not derived from neutrophils or NETs.
Related Links	http://dx.doi.org/10.1155/2015/614518
Starting Page	614518
File Format	PDF
ISSN	09629351
e-ISSN	14661861
Journal	Mediators of Inflammation
Volume Number	2015
Language	English
Publisher	Hindawi Publishing Corporation
Publisher Date	2015-01-01
Access Restriction	Open
Rights Holder	Hindawi Publishing Corporation
Subject Keyword	Immunology Cell Biology Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Cell Biology Immunology

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