ABSTRACT
AIM To study the interactions of component (group) compatibility of Sanwu Huangqin Decoction in incubation model of rat liver microsomes.METHODS With maackiain and ephedrine as internal standards,HPLC was adopted in the simultaneous content determination of total tlavonoids (baicalin,wogonoside,baicalein,wogonin and oroxylin A) from Scutellariae Radix and total alkaloids (oxymatrine,oxysophocarpine and matrine)from Sophorae flavescentis Radix in whole prescription component (group) compatibility and single medicinal material part (group) at seven time points (0,15,30,45,60,90 and 120 min),followed by the calculation of their in vitro metabolic rates.RESULTS In whole prescription component (group) compatibility,the contents of baicalin and wogonoside were first increased (0-0.5 h) and then decreased (0.5-2.0 h),those of baicalein,wogonin and oroxylin A showed increasing trends (more obvious within 0.5 h).The stable and gende metabolisms of various alkaloids reached balance within 20 min.CONCLUSION The bioavailability improvement and efficacy enhancement of total flavonoids from Scutellariae Radix may attribute to the compatibility with total alkaloids from Sophorae flavescentis Radix and total polysaccharides from Rehmanniae Radix in Sanwu Huangqin Decoction
ABSTRACT
AIM To study the interactions of component (group) compatibility of Sanwu Huangqin Decoction in incubation model of rat liver microsomes.METHODS With maackiain and ephedrine as internal standards,HPLC was adopted in the simultaneous content determination of total tlavonoids (baicalin,wogonoside,baicalein,wogonin and oroxylin A) from Scutellariae Radix and total alkaloids (oxymatrine,oxysophocarpine and matrine)from Sophorae flavescentis Radix in whole prescription component (group) compatibility and single medicinal material part (group) at seven time points (0,15,30,45,60,90 and 120 min),followed by the calculation of their in vitro metabolic rates.RESULTS In whole prescription component (group) compatibility,the contents of baicalin and wogonoside were first increased (0-0.5 h) and then decreased (0.5-2.0 h),those of baicalein,wogonin and oroxylin A showed increasing trends (more obvious within 0.5 h).The stable and gende metabolisms of various alkaloids reached balance within 20 min.CONCLUSION The bioavailability improvement and efficacy enhancement of total flavonoids from Scutellariae Radix may attribute to the compatibility with total alkaloids from Sophorae flavescentis Radix and total polysaccharides from Rehmanniae Radix in Sanwu Huangqin Decoction