Abstract
To determine whether interleukin 8 (IL-8) can be used as an index of biocompatibility of dialysis membranes, the effects of hemodialysis (HD) on plasma IL-8 levels and the expression of IL-8 mRNA in peripheral blood mononuclear cell (PBMC) were compared among regenerated cellulose (RC), polyacrylonitrile (PAN) and polymethylmethacrylate (PMMA) dialyzers. HD using RC dialysers significantly increased plasma IL-8 levels and induced abundant expression of IL-8 mRNA in PBMC. HD using PMMA dialyzers also increased plasma IL-8 levels and induced slight expression of IL-8 mRNA. In contrast, HD using PAN dialyzers neither increased plasma IL-8 levels nor induced the expression of IL-8 mRNA. In vitro studies demonstrated that IL-8 was considerably adsorbed by PAN membranes and not at all by RC and PMMA. These studies indicate that plasma IL-8 level and expression of PBMC IL-8 mRNA can be used as indices of biocompatibility of dialysis membranes.
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