简介:AIMTostudytheeffectofketoconazole(KTZ),aselectiveinhibitorofCYP3A,oninvivoandinvitrometabolicactivityofhepaticCYP3Ainratwithmidazolam(MDZ)asprobe,whichwasassessedbypharmacokineticparametersofMDZ.,andtoestablishasuitablemarkerorindicatorforestimatingdrugmetabolizingactivityofhepaticCYP3A.METHODS1.Invivostudy:SeveralloadingdosesofKTZpreparedinamixtureofPEG400andpropyleneglycol(9:1)wereadministratedthroughratsublingualveinfollowedbyconstantinfusionatdifferentratesthroughtailveinwithanattempttoachievecorrespondingsteady-stateplasmaconcentrationsinordertoattaincontinuousinhibitiononCYP3A.