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  • Title: Effect of lidocaine on the hematopoietic properties of recombinant human erythropoietin in the uremic rat.
    Author: Kaplan RA, Allen S, Warady BA, Alon US.
    Journal: Pediatr Nephrol; 1994 Aug; 8(4):477-9. PubMed ID: 7947041.
    Abstract:
    Subcutaneous injections of recombinant human erythropoietin (rHuEPO) produce considerable pain which can result in noncompliance. As a prelude to an investigation of the possible use of local anesthetics as additives to subcutaneous rHuEPO, we examined the effect of the addition of lidocaine on the erythropoietic properties of rHuEPO. Two weeks after 5/6 nephrectomy, 22 rats were randomly assigned to the following groups: normal saline, rHuEPO, lidocaine, and rHuEPO plus lidocaine. Injections were given three times a week for 2 weeks. No change in hematocrit was observed in the saline and lidocaine groups. The hematocrit of the rHuEPO rats increased from 44.5 +/- 1.4% (mean +/- SD) to 61.6 +/- 2.1% (P < 0.0005), and that of the rHuEPO plus lidocaine group from 42.8 +/- 4.3% to 63.9 +/- 3.0% (P < 0.005), with no difference between the groups. We conclude that the combination of rHuEPO plus lidocaine is as effective as rHuEPO alone in increasing the hematocrit of rats with chronic renal failure.
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