title: Effect of lidocaine on the hematopoietic properties of recombinant human erythropoietin in the uremic rat.
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.
authors.affiliation: Division of Pediatric Nephrology, Children's Mercy Hospital, University of Missouri at Kansas City 64108.
authors.forename: R A
authors.initials: RA
authors.lastname: Kaplan
authors.forename: S
authors.initials: S
authors.lastname: Allen
authors.forename: B A
authors.initials: BA
authors.lastname: Warady
authors.forename: U S
authors.initials: US
authors.lastname: Alon
mesh_terms: D000818:Animals; D003404:Creatinine / Q000097:blood / Q000652:urine; D004338:Drug Combinations; D004920:Erythropoiesis / Q000187:drug effects*; D004921:Erythropoietin / Q000494:pharmacology*; D008012:Lidocaine / Q000494:pharmacology*; D008297:Male; D011897:Random Allocation; D051381:Rats; D017207:Rats, Sprague-Dawley; D011994:Recombinant Proteins / Q000494:pharmacology; D014511:Uremia / Q000097:blood / Q000150:complications* / Q000652:urine
chemical_list: D004338:Drug Combinations; D011994:Recombinant Proteins; D004921:Erythropoietin; D008012:Lidocaine; D003404:Creatinine