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Plasma cytokine levels in necrotizing enterocolitis
Authors:JA Morecroft  L Spitz  PA Hamilton  SJK Holmes
Affiliation:Department of Surgery, Institute of Child Health, London;Department of Neonatology, St George's Hospital, London, UK;Department of Paediatric Surgery, St George's Hospital, London, UK
Abstract:
Plasma concentrations of tumour necrosis factor (TNF) and interleukin-6 (IL-6) were measured by ELISA in samples taken from 24 infants with necrotizing enterocolitis (NEC) between 0 and 306 h from diagnosis. TNF was detected (>10pg/ml) in 71% samples with a mean of 48pg/ml (95% CI 42 to 55 pg/ml) and did not vary with either time from diagnosis or severity of disease. IL-6 was raised during the first 48 h with a significant difference between stage II (mean 127 pg/ml, 95% CI 10 to 329 pg/ml) and stage HI (mean 3127 pg/ml, 95% CI 1809 to 4445 pg/ml, p = 0.001). Postoperative plasma IL-6 concentration fell to similar levels seen in stage II (mean 150 pg/ml, 95% CI 37 to 283 pg/ ml, p = 0.79). We conclude that plasma concentration of IL-6 rather than TNF reflects the clinical severity of necrotizing enterocolitis and that the relative level of these cytokines has important implications for the use of anti-cytokine therapy in NEC.
Keywords:Interleukin-6    necrotizing enterocolitis    tumour necrosis factor
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