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Nephrology Dialysis Transplantation, Vol 12, Issue 8 1635-1639, Copyright © 1997 by Oxford University Press

ORIGINAL ARTICLES

In vitro mitochondrial test to assess haemodialyser biocompatibility

L Tabouy, A Chauvet-Monges, P Brunet, D Braguer, P Garcia, Y Berland and A Crevat
Laboratoire de Biophysique, Faculte de Pharmacie, 27 Bd Jean Moulin, 13385 Marseille Cedex 5, France; Service de Nephrologie, Hopital Sainte-Marguerite, Marseille, France; Corresponding author

Background: This paper describes an in vitro mitochondrial test to assess the biocompatibility of haemodialysers. Method: We tested on isolated liver mitochondria the effect of solutions obtained by an aqueous rinse of different haemodialysers (cuprophane, cellulose acetate, Hemophan, polyacrylonitrile, polymethhylmethacrylate, polysulphone, polyamide). Moreover, to determine the penetration into the cell and the cytotoxicity of these solutions from haemodialysers, we examined the effect of rinse solutions on HT29-D4 cells. Results: Our results showed that rinse solutions from haemodialysers decrease the mitochondrial ATP synthesis. Cuprophane has the most marked effect, and the synthetic membranes exhibited only mild effects. Rinse solutions penetrated the cell and were cytotoxic by acting on mitochondria in the cell. In this respect, cellulosic membranes were the most toxic. Conclusion: Taken together our findings lead to a classification of haemodialyser membranes which is identical to one based on criteria such as activation of complement (cuprophane>other cellulosics>synthetics). Moreover isolated mitochondria make it possible to differentiate among the synthetic membranes. Isolated mitochondria thus appear to be a good in vitro test to assess the biocompatibility of haemodialysers. Keywords: ATP; biocompatibility; haemodialyser; mitochondria
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