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NF-kappaB expression in mononuclear cells of patients with sepsis resembles that observed in lipopolysaccharide tolerance.

Adib-Conquy, M and Adrie, C and Moine, P and Asehnoune, K and Fitting, C and Pinsky, MR and Dhainaut, JF and Cavaillon, JM (2000) NF-kappaB expression in mononuclear cells of patients with sepsis resembles that observed in lipopolysaccharide tolerance. Am J Respir Crit Care Med, 162 (5). 1877 - 1883. ISSN 1073-449X

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Abstract

The expression of NF-kappaB was studied in freshly isolated peripheral blood mononuclear cells (PBMC) of patients with severe sepsis and major trauma. The expression of p65p50 heterodimer, the active form of NF-kappaB, was significantly reduced for all patients as compared with control subjects. The p50p50 homodimer, an inhibitory form of NF-kappaB, was reduced in the survivors of sepsis and in patients with trauma. Subsequent in vitro stimulation of PBMC with lipopolysaccharide (LPS) did not induce further NF-kappaB nuclear translocation: the survivors of sepsis and trauma patients showed low expression of both p65p50 and p50p50, whereas nonsurvivors of sepsis showed a predominance of the inactive homodimer and a low p65p50/p50p50 ratio when compared with control subjects. In the later group of patients there was a reverse correlation between plasma IL-10 levels and the p65p50/p50p50 ratio after in vitro LPS stimulation (r = -0.8, p = 0.04). The reduced expression of nuclear NF-kappaB was not due to its inhibition by IkappaBalpha, as very low expression of IkappaBalpha, as well as low levels of p65 and p50 were found in the cytoplasm of PBMC from patients with sepsis and trauma when compared with control subjects. These results demonstrate that upon LPS activation, PBMC of patients with systemic inflammatory response syndrome show patterns of NF-kappaB expression that resemble those reported during LPS tolerance: global down-regulation of NF-kappaB in survivors of sepsis and trauma patients and the presence of large amounts of the inactive homodimer in the nonsurvivors of sepsis.


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Details

Item Type: Article
Status: Published
Creators/Authors:
CreatorsEmailPitt UsernameORCID
Adib-Conquy, M
Adrie, C
Moine, P
Asehnoune, K
Fitting, C
Pinsky, MRpinsky@pitt.eduPINSKY0000-0001-6166-700X
Dhainaut, JF
Cavaillon, JM
Date: November 2000
Date Type: Publication
Journal or Publication Title: Am J Respir Crit Care Med
Volume: 162
Number: 5
Page Range: 1877 - 1883
DOI or Unique Handle: 10.1164/ajrccm.162.5.2003058
Schools and Programs: School of Medicine > Critical Care Medicine
Refereed: Yes
Uncontrolled Keywords: Adolescent, Adult, Aged, Blotting, Western, Cell Nucleus, Cytoplasm, Electrophoresis, Female, Humans, In Vitro Techniques, Interleukin-10, Leukocytes, Mononuclear, Lipopolysaccharides, Male, Middle Aged, NF-kappa B, NF-kappa B p50 Subunit, Sepsis, Transcription Factor RelA, Wounds and Injuries
ISSN: 1073-449X
PubMed ID: 11069829
Date Deposited: 22 Mar 2012 20:54
Last Modified: 30 Jan 2020 16:55
URI: http://d-scholarship.pitt.edu/id/eprint/11436

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