Compatibility of Banxia Houpo decoction on hepatic CYP450 and renal organicion transporters in mice / 中国中药杂志

ABSTRACT

By analyzing the related indicators [hepatic CYP450 subtype and renal organic anion and cation transporters (OATs and OCTs)], the present study investigated the effects of formula Banxia Houpo decoction principal drug pinellia, assistant drug magnolia, their compatibility and the principle of the whole decoction on the metabolism ability in the liver and the transport change in the kidney of mice. Biochemical and molecular (RT-PCR and western blotting) results indicated that pinellia increased activity and expression of hepatic Cyp2e1 and Cyp3a11 in mice, respectively. Pinellia and magnolia increased expression of renal OAT1, OAT3, OCT1 and OCT2 in mice, respectively. The compatibility of pinellia and magnolia, as well as Banxia Houpo decoction synergistically restrained the activated effect of pinellia on hepatic Cyp2e1, therefore avoiding liver peroxidation and reducing toxicity potential. The compatibility of this drug pair and Banxia Houpo decoction not only reduced activity and expression of hepatic Cyp3a11 to control drug metabolism speed, but also balanced the expression of renal OAT1/3 and OCT1/2 to enhance drug efficacy. The effect of compatibility of Banxia Houpo decoction was better than that of pinellia and magnolia pair, and the normal dosage was better than the high dosage. The present study proved the advantage of the compatibility of pinellia combined with magnolia and the principle of Banxia Houpo decoction, which related to hepatic CYP450 and renal organic ion transporters, and guided the clinical use of Banxia Houpo decoction to exert its toxicity reduction and efficacy enhancement.