Inhibition of CYP3A mRNA and protein expression, and enzymatic activity, by enrofloxacin in chickens
Hu, H.-F., Gao, Z.-X., Cheng, Y.-Y. Inhibition of CYP3A mRNA and protein expression, and enzymatic activity, by enrofloxacin in chickens. J. vet. Pharmacol. Therap. 33, 546–550.
This study was to investigate the effect of enrofloxacin (EF) on CYP3A in chicken by using quantitative reverse transcription-polymerase chain reaction and immunodetected. The treated chickens were given 5, 25 and 125 mg/kg of EF while the control chickens were treated with the same volume saline. There was no significant difference between the low dose group and controls in the concentration of hepatic microsome protein and total CYP content, while the middle and high dose EF caused the down regulation. Depression of the CYP3A activity, mRNA and protein were observed in treated chickens, and the inhibition degree was different from each group. It was concluded that EF caused the inhibition of CYP3A both in genetic transcription and protein levels. But the inhibition metabolism still needs further researches.
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