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Antimicrobial Agents and Chemotherapy, August 2004, p. 2793-2798, Vol. 48, No. 8
0066-4804/04/$08.00+0     DOI: 10.1128/AAC.48.8.2793-2798.2004
Copyright © 2004, American Society for Microbiology. All Rights Reserved.

Comparative Effects of Ciprofloxacin and Ceftazidime on Cytokine Production in Patients with Severe Sepsis Caused by Gram-Negative Bacteria

C. A. Gogos,* A. Skoutelis, A. Lekkou, E. Drosou, I. Starakis, M. N. Marangos, and H. P. Bassaris

Department of Internal Medicine, Infectious Diseases Section, Patras University Medical School, Patras, Greece

Received 16 January 2004/ Returned for modification 6 February 2004/ Accepted 26 April 2004

In the present study the effect of ciprofloxacin versus ceftazidime on concentrations of pro- and anti-inflammatory cytokines in the sera of patients with severe sepsis was evaluated. The study included 58 previously healthy patients suffering from severe sepsis caused by gram-negative bacteria, treated with either ciprofloxacin or ceftazidime after thorough clinical and microbiological evaluation and followed up for clinical outcome. Levels of the proinflammatory cytokines tumor necrosis factor alpha (TNF-{alpha}), interleukin-1b (IL-1b), IL-6, and IL-8 and of the anti-inflammatory cytokine IL-10, as well as of IL-1 receptor antagonist and soluble TNF receptors I and II, in serum were measured at baseline and 24 and 48 h after the first antimicrobial dose. Mean SAPS-II scores, development of septic shock, and mortality rates were similar in the two groups (43.2 ± 9.2, 21.4%, and 14.3% in the ceftazidime group versus 49.8 ± 11.3, 20%, and 13.3% in the ciprofloxacin group). Serum TNF-{alpha} and IL-6 levels at 24 and 48 h were significantly lower in the ciprofloxacin group, while the IL-10/TNF-{alpha} ratio was significantly higher, than those for the ceftazidime group. Among patients with high baseline TNF-{alpha} levels, there were significant increases in the IL-10/TNF-{alpha} ratio at both 24 and 48 h over that at admission for the ciprofloxacin group, while no differences were noted in the ceftazidime group. These results indicate that ciprofloxacin may have an immunomodulatory effect on septic patients by attenuating the proinflammatory response, while there is no evidence that differences in the cytokines measured have any impact on the final outcome.

* Corresponding author. Mailing address: Department of Internal Medicine, Infectious Diseases Section, Patras University Medical School, Patras, Greece. Phone: 30-2-610999744. Fax: 30-2-610999740. E-mail: cgogos{at}med.upatras.gr.

Antimicrobial Agents and Chemotherapy, August 2004, p. 2793-2798, Vol. 48, No. 8
0066-4804/04/$08.00+0     DOI: 10.1128/AAC.48.8.2793-2798.2004
Copyright © 2004, American Society for Microbiology. All Rights Reserved.





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