title: Effect of oxygen-carrying resuscitation fluids on the pharmacokinetics of antipyrine, diazepam, penicillin, and sulfamethazine in rats.
abstract: The effects of exchange transfusion with an oxygen-carrying resuscitation fluid, Fluosol DA 20% or stroma-free hemoglobin, on the pharmacokinetics of antipyrine, diazepam, penicillin, and sulfamethazine were studied in rats. After transfusion with Fluosol DA 20% or stroma-free hemoglobin the pharmacokinetics of antipyrine, diazepam, and penicillin were unchanged when compared to control animals. After transfusion with Fluosol DA 20%, the t 1/2 of sulfamethazine was increased from 3.15 +/- 0.56 to 7.65 +/- 2.41 hr (p less than 0.05) and the Vd was increased from 60.7 +/- 17.5 to 152 +/- 16 ml (p less than 0.05). In contrast, after transfusion with stroma-free hemoglobin, the AUC of sulfamethazine was decreased from 129 +/- 28 to 80.5 +/- 27.7 micrograms X h X ml-1 (p less than 0.05) and there was an increase in Cl from 12.2 +/- 3.4 to 20.2 +/- 6.0 ml X h-1 (p less than 0.05) and Vd from 60.1 +/- 11.8 to 132 +/- 49 ml (p less than 0.05). The reason for these alterations is not clear. Fluosol DA 20% and stroma-free hemoglobin may alter the acetylation of sulfamethazine.
mesh_terms: D000818:Animals; D000983:Antipyrine / Q000378:metabolism*; D001802:Blood Substitutes; D003975:Diazepam / Q000378:metabolism*; D004338:Drug Combinations; D005466:Fluorocarbons; D006454:Hemoglobins; D006895:Hydroxyethyl Starch Derivatives; D007700:Kinetics; D008297:Male; D010406:Penicillins / Q000378:metabolism*; D051381:Rats; D011919:Rats, Inbred Strains; D013418:Sulfamethazine / Q000378:metabolism*
chemical_list: D001802:Blood Substitutes; D004338:Drug Combinations; D005466:Fluorocarbons; D006454:Hemoglobins; D006895:Hydroxyethyl Starch Derivatives; D010406:Penicillins; D013418:Sulfamethazine; C017323:glucose, glycerol, hydroxyethyl starch, perfluorodecalin, perfluorotripropylamine, pluronic F-68, salts, yolk phospholipids drug combination; D003975:Diazepam; D000983:Antipyrine