Journal
BRITISH JOURNAL OF HAEMATOLOGY
Volume 143, Issue 1, Pages 84-91Publisher
WILEY-BLACKWELL
DOI: 10.1111/j.1365-2141.2008.07298.x
Keywords
haemophagocytic syndrome; cytokine; diagnosis; prognosis; infection
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The haemophagocytic syndrome (HPS) is a rare but frequently fatal disorder of immune regulation caused by hypercytokinemia. Using cytometric bead array technique, the serum T-helper cell type 1 (Th1) and 2 (Th2) cytokines including interferon-gamma (IFN-gamma), tumour necrosis factor (TNF), interleukin (IL)-10, IL-6, IL-4 and IL-2 were determined in 24 children with de novo HPS and 87 children as control. The median levels of serum IFN-gamma, IL-10 and IL-6 in the acute phase of HPS were 901.7, 879.0 and 63.8 pg/ml, respectively, significantly higher than those after remission, and in the healthy volunteers and patients with viral infection. IL-4 was slightly elevated while IL-2 and TNF were within normal range in acute phase. Patients with bacterial sepsis showed an extremely high level of IL-6 and moderate level of IL-10, whereas IFN-gamma was only slightly elevated. Five patients were diagnosed with HPS according to the Th1/Th2 cytokine pattern 3-13 d earlier than they fulfilled the relevant diagnostic criteria. IL-10 level > 2000 pg/ml was an unfavorable prognostic factor for HPS treatment response (P = 0.033) and outcome (P = 0.009). We conclude that the significant increase of IFN-gamma and IL-10 and a slightly increased level of IL-6 is an early, specific and prognostic cytokine pattern for childhood HPS.
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