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Ornithine Decarboxylase Activity and Polyamines level from red Cells Lysate of Uraemic Patients and Normal Healthy Subjects

We studied the ornithine decarboxylase (ODC) activity and polyamines (PAs) content in the red cells lysate before and after haemodialysis of 15 uremic patients and 15 healthy subjects. ODC activity is significantly increased after haemodialysis but the PAs concentrations (particularly spermine and spermidine) do not increase. This could be because of a minimal loss of PAs surplus production. On the contrary the increase of ODC activity could be explained in several ways, e.g. by stimuli during haemodialysis (hypoxia of the first hour of treatment, decrease of plasmatic osmolarity and biological stimulation of the blood during its passage through the filter).