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Tumor Necrosis Factor α and Interleukin 1β in Synovial Fluid of Infants and Children With Suppurative Arthritis

Xavier Sáez Llorens, MD; Mahmoud M. Mustafa, MD; Octavio Ramilo, MD; Chester Fink, MD; Bruce Beutler, MD; John D. Nelson, MD
Am J Dis Child. 1990;144(3):353-356. doi:10.1001/archpedi.1990.02150270103035.
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• Tumor necrosis factor α and interleukin 1β concentrations were measured in synovial fluid of 24 infants and children with diagnoses of suppurative arthritis (n = 16) and other kinds of arthritis (n = 8). Large concentrations of tumor necrosis factor α (range, 100 to 85 000 pg/mL) were found in 12(75%) of 16 patients with bacterial infection and in none of the patients with noninfectious origins. Large concentrations of interleukin 1β (200 pg/mL) were found in 15(94%) of 16 patients with bacterial infection and in none of the other patients. In the latter group, small concentrations of interleukin 1 (range, 40 to 120 pg/mL) were present in 5 (63%) of 8 patients. Serum samples obtained simultaneously were negative for both cytokines. Tumor necrosis factor α and interleukin 1β concentrations correlated significantly and with leukocyte counts in synovial fluid. We conclude that large concentrations of tumor necrosis factor α and interleukin 1β are produced locally in patients with suppurative arthritis and they may be potentially useful in differentiating this condition from other kinds of arthritis.

(AJDC. 1990;144:353-356)

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