Trace Elements Concentration in Dialysis

In hemodialysis population the study team finds high concentrations of toxic trace elements (2 times higher than the general population for cadmium 4 to 13 times for lead). Several recent studies suggest a role of chronic exposure to cadmium in the loss of residual renal function, osteoporosis, graft failure, arteriosclerosis, as well as in excess cardiovascular mortality. Moreover, in hemodialysis population, a deficit of certain essential trace elements (manganese, selenium, zinc) is observed. For example, in the population undergoing chronic hemodialysis, a zinc deficiency is found in 40 to 78% of cases. Zinc is a cofactor of more than 70 enzymes. In this observational cohort, the study team seeks to understand the impact of HD and HDF on the serum concentrations of heavy metals and also oligometals, by studying their concentrations in the dialysate during dialysis sessions by inductive coupled plasma mass-spectrometry (ICP-MS).