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This study was designed to examine circulating and urine cytokine levels in patients receiving long-term home total parenteral nutrition (TPN) support. Twelve patients who had been receiving home TPN for more than 1 year (range, 1.3-19.5 years) were enrolled for study. To avoid the potential confounding effects of intercurrent infection, patients were studied during periods of clinical stability without clinical evidence of infection. Ten normal healthy volunteers served as controls. Serum levels of albumin and C-reactive protein, temperature, body weight, and blood white cell counts were determined. The levels of soluble tumor necrosis factor receptor II (sTNF-RII) and interleukin 6 (IL-6) were measured in serum and 24-hr urine. The results showed that the concentrations of sTNF-RII and IL-6 in 24-hr urine and serum were significantly higher in patients, indicating that long-term home TPN may be associated with a persistent low-grade inflammatory state. |
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