H Nakae, S Endo, K Inada, T Takakuwa, T Kasai, M Yoshida
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Relationship between cytokines and leukotriene B4 in sepsis.
To clarify the relationship between cytokines and arachidonic acid metabolites, we measured tumor necrosis factor (TNF-alpha), interleukin 8 (IL-8), and leukotriene B4 (LTB4). The subjects consisted of 30 patients with sepsis. The results were compared between patients who died (Group A) and those who survived (Group B). All TNF-alpha, IL-8, and LTB4 levels were significantly higher in Group A than in Group B, reflecting the severity of the disease. The LTB4 levels were significantly correlated with the TNF-alpha level and the IL-8 level. These results suggest that inflammatory cytokines, excessively produced due to inflammatory reactions, stimulate as a mediator the release of arachidonic acid, increasing LTB4 production.
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