Τίτλος:
Early changes of the kinetics of monocyte trem-1 reflect final outcome in human sepsis
Γλώσσες Τεκμηρίου:
Αγγλικά
Περίληψη:
Background: TREM-1 (triggering receptor expressed on myeloid cells), a receptor expressed on neutrophils and monocytes, is upregulated in sepsis and seems to tune the inflammatory response. We explored the expression of TREM-1 at the gene level and on cell membranes of monocytes and association with clinical outcome. Methods: Peripheral venous blood was sampled from 75 septic patients (39 patients with sepsis, 25 with severe sepsis and 11 with septic shock) on sepsis days 1, 3 and 7. TREM-1 on monocytes was measured by flow cytometry; gene expression of in circulating mononuclear cells was assessed by real-time PCR. sTREM-1 was measured in serum by an enzyme immunoassay. Results: Although surface TREM-1, sTREM-1 and gene expression did not differ between sepsis, severe sepsis and septic shock on day 1, survivors had greater expression of surface TREM-1 on days 3 and 7 compared to non-survivors. sTREM-1 on non-survivors decreased on day 3 compared to baseline. Patients with increase of monocyte gene expression of from day 1 to day 3 had prolonged survival compared to patients with decrease of gene expression of from day 1 to day 3 (p: 0.031). Conclusions: Early decrease of gene expression of in monocytes is associated with poor outcome. A reciprocal decrease of the pro-inflammatory surface receptor TREM-1 linked with sepsis-induced immunosuppression may be part of the explanation. © Marioli et al.
Συγγραφείς:
Marioli, A.
Koupetori, M.
Raftogiannis, M.
Patrani, M.
Antonakos, N.
Pavlaki, M.
Adamis, G.
Dougekou, G.
Damoraki, G.
Tsangaris, I.
Περιοδικό:
BMC Immunology
Εκδότης:
BioMed Central Ltd.
Λέξεις-κλειδιά:
adult; aged; Article; controlled study; enzyme immunoassay; female; flow cytometry; gene expression; genetic association; human; human cell; immune response gene; major clinical study; male; monocyte; observational study; peripheral blood mononuclear cell; real time polymerase chain reaction; sepsis; septic shock; serum; severe sepsis; survival rate; survivor; treatment outcome; triggering receptor expressed on myeloid cells 1 gene; blood; clinical trial; disease free survival; follow up; gene expression regulation; immunology; kinetics; metabolism; middle aged; mortality; pathology; sepsis; very elderly, immunoglobulin receptor; membrane protein; TREM1 protein, human, Aged; Aged, 80 and over; Disease-Free Survival; Female; Follow-Up Studies; Gene Expression Regulation; Humans; Kinetics; Male; Membrane Glycoproteins; Middle Aged; Monocytes; Receptors, Immunologic; Sepsis; Survival Rate
DOI:
10.1186/s12865-014-0063-y
