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[Importance of determining the absolute CD3+ lymphocyte count during induction therapy with antithymocyte globulin in

B Drasković-Pavlović, R Hrvacević, Lj Ignjatović

    Vojnosanitetski Pregled
    |October 20, 2000
    PubMed

    Antithymocyte globulin (ATG) is successfully applied in prophylaxis and treatment of renal allograft rejection. However, it is an expensive mode of therapy, associated with increased risk of opportunistic infections and lymphoproliferative diseases. For this reason, monitoring of ATG immunosuppressive effects as well as individual dose adjustment represent an important therapeutic approach. Here we report our results of ATG dose titration according to total lymphocyte count (< 300/microliter) and absolute CD3+ count (< 50/microliter) in seven renal transplant patients. Monitoring of absolute CD3+ count enabled reduction of the mean daily dose from the recommended dosage in all patients. Our results have also shown that the absolute CD3+ count is a more reliable parameter than the total lymphocyte count for monitoring of ATG biological effects on T cells. When rapid, significant and stable decrease of absolute CD3+ count is reached, ATG dose can be further adjusted according to the total lymphocyte count. With this approach, ATG treatment becomes rational and safe, with well established immunosuppressive effect, reduced risk of overimmunosuppression and considerable cost benefit.

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