Aronoff G R, Pottratz S T, Brier M E, Walker N E, Fineberg N S, Glant M D, Luft F C
Antimicrob Agents Chemother. 1983 Jan;23(1):74-8. doi: 10.1128/AAC.23.1.74.
To test the hypotheses that the renal parenchymal accumulation kinetics of aminoglycosides can predict nephrotoxicity, we measured renal parenchymal concentrations in rats receiving gentamicin and tobramycin. In addition to comparing the drugs as single daily injections, we also examined the effect of multiple doses versus a single daily dose. Gentamicin accumulated to much greater concentrations in the kidney than did tobramycin. Gentamicin given twice daily accumulated more rapidly and to greater concentrations than did the same total dose given once daily. We conclude that aminoglycoside accumulation in the kidney depends on the drug and dose regimen. These differences may explain relative nephrotoxicities.
为了验证氨基糖苷类药物在肾实质中的蓄积动力学能否预测肾毒性这一假说,我们测定了接受庆大霉素和妥布霉素的大鼠肾实质浓度。除了比较单次每日注射给药的药物外,我们还研究了多次给药与单次每日给药的效果。庆大霉素在肾脏中的蓄积浓度远高于妥布霉素。每日两次给药的庆大霉素比每日一次给予相同总剂量的庆大霉素蓄积更快且浓度更高。我们得出结论,氨基糖苷类药物在肾脏中的蓄积取决于药物和给药方案。这些差异可能解释了相对肾毒性。