title: The diminished postoperative capacity of blood leukocytes to produce IL-6 is associated with high concentrations of IL-6 in the circulation.
abstract: Surgical trauma is followed both by a transient increase of interleukin 6 (IL-6) concentrations in the serum and impaired function of circulating leukocytes. Perioperatively, we investigated the relationship of IL-6 concentrations in the serum with lipopolysaccharide (LPS)-stimulated cytokine production in the whole blood of patients undergoing elective major abdominal operations. In 50 patients, we found a transient increase of IL-6 concentrations in the serum. Six hours after skin incision, in vitro stimulated production of IL-6 and TNFalpha was diminished by 72% (P<0.05). A significant increase in cytokine production was observed three days postoperatively, however this was 63% below the preoperative values. Patients with high concentrations of circulating IL-6 showed a significantly lower stimulated IL-6 production than patients with low serum concentrations of IL-6. We conclude, that two opposing effects are associated with surgery: an activation leading to IL-6-release into the circulation, and a prolonged hyporesponsiveness of circulating leukocytes. These reactions are positively related.
authors.affiliation: Department of Surgery, University of Erlangen-Nuremberg, Germany. Jutta.Riese@chir.med.uni-erlangen.de
authors.forename: J
authors.initials: J
authors.lastname: Riese
authors.forename: C
authors.initials: C
authors.lastname: Denzel
authors.forename: C
authors.initials: C
authors.lastname: Mehler
authors.forename: M
authors.initials: M
authors.lastname: Zowe
authors.forename: W
authors.initials: W
authors.lastname: Hohenberger
authors.forename: W
authors.initials: W
authors.lastname: Haupt
mesh_terms: D000005:Abdomen / Q000601:surgery; D005260:Female; D006801:Humans; D015850:Interleukin-6 / Q000096:biosynthesis* / Q000097:blood; D007962:Leukocytes / Q000276:immunology*; D008297:Male; D008875:Middle Aged; D019990:Perioperative Care; D011184:Postoperative Period; D014409:Tumor Necrosis Factor-alpha / Q000096:biosynthesis
chemical_list: D015850:Interleukin-6; D014409:Tumor Necrosis Factor-alpha