“MethodsAn AGP-immobilized protein column was used to develop HPLC methods to evaluate the effect(s) of physiologically relevant HSA and … concentrations on the lactone/carboxylate ratio and hydrolysis kinetics of Karenitecin, camptothecin (CPT), and topotecan (TPT).ResultsPhysiologically relevant concentrations of HSA and AGP substantially slowed Karenitecin lactone hydrolysis.”