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  • Title: Inflammatory cytokine response in patients with septic shock secondary to generalized peritonitis.
    Author: Riché FC, Cholley BP, Panis YH, Laisné MJ, Briard CG, Graulet AM, Guéris JL, Valleur PD.
    Journal: Crit Care Med; 2000 Feb; 28(2):433-7. PubMed ID: 10708179.
    Abstract:
    OBJECTIVES: The aims of this study were the following: a) to assess the proinflammatory cytokine (tumor necrosis factor [TNF]-alpha, interleukin [IL]-1, and IL-6) response in patients with septic shock secondary to generalized peritonitis; and b) to evaluate the influence of bacteremic status, type of peritonitis (acute perforation or postoperative), and peritoneal microbial status (mono- or polymicrobial) on cytokine expression and mortality. DESIGN: Prospective study. SETTING: Surgical intensive care unit of a university hospital. PATIENTS: Fifty-two consecutive patients with septic shock caused by generalized peritonitis. INTERVENTIONS: Routine blood tests, blood cultures, and cytokine assays were performed during the first 3 days after onset of shock. MEASUREMENTS AND MAIN RESULTS: Serum TNF-alpha and IL-6 concentrations were measured by using a radioimmunoassay, and IL-1 concentrations were measured by using ELISA. Median serum concentrations on day 1 were: TNF-alpha, 90 pg/mL; IL-1, 7 pg/mL; and IL-6, 5000 pg/mL. TNF-alpha and IL-6 concentrations decreased significantly between the first and third days of septic shock (p = .0001), whereas IL-1 concentrations remained low. The decrease in IL-6 tended to be more pronounced in the survivors group (p = .057). Median TNF-alpha serum concentrations were higher in bacteremic compared with nonbacteremic patients (151 vs. 73 pg/mL, p = .003). TNF-alpha, IL-1, and IL-6 serum concentrations and mortality were not different between acute perforation vs. postoperative peritonitis and mono- versus polymicrobial peritonitis. CONCLUSIONS: The systemic release of TNF-alpha and IL-6 during septic shock caused by generalized peritonitis was maximal on day 1 and decreased rapidly during the next days. No systemic release of IL-1 was observed. IL-6 serum concentrations remained higher in patients who subsequently died. Among the different features of peritonitis studied, only bacteremia influenced the systemic cytokine response (higher TNF-alpha).
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