Evaluation of nephrotoxic effects of aristolochic acid on zebrafish (Danio rerio) larvae

To analyze the toxic effects of aristolochic acid (AA) on developed kidneys in zebrafish larvae, zebrafish at 3 days postfertilization were treated with various concentrations of AA for 24 h before the status of kidney injury was investigated from several points of view. It was found that 21% of the larvae treated with 10 µmoL/L AA exhibited evident periocular edema. When the concentrations of AA were increased to 20 and 40 µmoL/L, defect in the cardiovascular system characterized by slow heart beat and blood flow was seen coupled with periocular edema. Creatinine in the whole larval tissue determined by liquid chromatography–mass spectrometry/mass spectrometry exhibited dramatic increase in the treated groups in a dose-dependent manner within a certain range of doses. Several evident protein bands were detected by sodium dodecyl sulfate–polyacrylamide gel electrophoresis in supernatant of the treated larvae, indicating leakage of glomerular filtration barrier. Results of quantitative polymerase chain rea...