title: Characterization of changes in plasma and tissue oxylipin levels in LPS and CLP induced murine sepsis.
abstract: OBJECTIVE
  The present study aimed to comprehensively investigate the changes in oxylipins during murine sepsis induced by lipopolysaccharide (LPS) or cecal ligation and puncture (CLP).
  
  
  METHODS
  Twenty-four hours after induction of sepsis in male C57BL/6 mice by LPS or CLP, plasma and liver, lung, kidney and heart tissues were sampled. Oxylipin levels in plasma and tissue were quantified by means of LC-MS. Moreover, clinical chemistry parameters were determined in plasma and interleukin levels (MCP-1 and IL-6) were determined in kidney and liver.
  
  
  RESULTS
  Elevation of liver function plasma parameters at 24 h revealed that both models were successful in the induction of sepsis. LPS induced sepsis resulted in a dramatic increase of plasma PGE2 (2,100% change in comparison to control) and other cyclooxygenase metabolites, whereas this effect was less pronounced in CLP induced sepsis (97% increase of PGE2). Plasma epoxy-fatty acids (FAs) and hydroxy-FAs and most of the dihydroxy-FAs were elevated in both models of sepsis. Changes of tissue oxylipin concentrations were organ dependent. Only few changes were detected in the lung and liver tissue, epoxy-FAs were elevated in the kidney. In the heart tissue a trend towards lower levels of hydroxy-FAs and epoxy-FAs was observed.
  
  
  CONCLUSIONS
  Both murine models of sepsis are characterized by changes of oxylipins formed in all branches of the arachidonic acid (AA) cascade. The more pronounced effects in the LPS model make this model more suitable for the investigation of the AA cascade and its pharmacological modulation in sepsis.
authors.affiliation: Institute for Food Toxicology and Analytical Chemistry, University of Veterinary Medicine Hannover, Bischofsholer Damm 15, 30173, Hannover, Germany.
authors.forename: Ina
authors.initials: I
authors.lastname: Willenberg
authors.affiliation: Institute for Food Toxicology and Analytical Chemistry, University of Veterinary Medicine Hannover, Bischofsholer Damm 15, 30173, Hannover, Germany.
authors.forename: Katharina
authors.initials: K
authors.lastname: Rund
authors.affiliation: Department of Nephrology, Hannover Medical School, Hannover, Germany.|The Transplantation Center of the Affiliated Hospital, Zunyi Medical College, Zunyi, China.
authors.forename: Song
authors.initials: S
authors.lastname: Rong
authors.affiliation: Department of Nephrology, Hannover Medical School, Hannover, Germany.|Phenos GmbH, Hannover, Germany.
authors.forename: Nelli
authors.initials: N
authors.lastname: Shushakova
authors.affiliation: Department of Nephrology, Hannover Medical School, Hannover, Germany.|Phenos GmbH, Hannover, Germany.
authors.forename: Faikah
authors.initials: F
authors.lastname: Gueler
authors.affiliation: Institute for Food Toxicology and Analytical Chemistry, University of Veterinary Medicine Hannover, Bischofsholer Damm 15, 30173, Hannover, Germany. schebb@wwu.de.|Institute of Food Chemistry, University of Wuppertal, Wuppertal, Germany. schebb@wwu.de.
authors.forename: Nils Helge
authors.initials: NH
authors.lastname: Schebb
mesh_terms: D000527:Alprostadil / Q000097:blood / Q000378:metabolism; D000818:Animals; D002432:Cecum / Q000601:surgery; D018932:Chemokine CCL2 / Q000235:genetics; D015232:Dinoprostone / Q000097:blood / Q000378:metabolism; D015850:Interleukin-6 / Q000235:genetics; D007668:Kidney / Q000378:metabolism; D008026:Ligation; D008070:Lipopolysaccharides; D008099:Liver / Q000378:metabolism; D008168:Lung / Q000378:metabolism; D008297:Male; D008810:Mice, Inbred C57BL; D009206:Myocardium / Q000378:metabolism; D054883:Oxylipins / Q000097:blood* / Q000378:metabolism; D012333:RNA, Messenger / Q000378:metabolism; D018805:Sepsis / Q000097:blood* / Q000378:metabolism
chemical_list: C491768:Ccl2 protein, mouse; D018932:Chemokine CCL2; D015850:Interleukin-6; D008070:Lipopolysaccharides; D054883:Oxylipins; D012333:RNA, Messenger; C577686:interleukin-6, mouse; D000527:Alprostadil; D015232:Dinoprostone
keywords: Cecal ligation and puncture; Lipid mediators; Lipopolysaccharide (LPS); Sepsis