title: Simple and sensitive method for quantification of fludarabine triphosphate intracellular concentration in leukemic cells using isocratic liquid chromatography.
abstract: A simple, isocratic HPLC method was newly developed for quantitating intracellular fludarabine triphosphate (F-ara-ATP). Samples (500 microl) were injected onto an anion-exchange column and eluted isocratically with phosphate-acetonitrile buffer (flow rate: 0.7 ml/min) at an ambient temperature. F-ara-ATP was quantitated according to its peak area at the absorbance of 261 nm. The standard curve was linear with minimal within-day and inter-day variability. The low and high quantification limits were 50 pmol and 20 nmol, respectively. The method was capable of measuring F-ara-ATP generated in cultured leukemic cells in vitro. Thus, our method will be useful because of its sensitivity and simplicity as well as applicability to biological materials.
authors.affiliation: First Department of Internal Medicine, Fukui Medical University, 23 Shimoaizuki, Matsuoka, Fukui 910-1193, Japan. tyamauch@fmsrsa.fukui-med.ac.jp
authors.forename: Takahiro
authors.initials: T
authors.lastname: Yamauchi
authors.forename: Takanori
authors.initials: T
authors.lastname: Ueda
mesh_terms: D000970:Antineoplastic Agents / Q000032:analysis*; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D006801:Humans; D007938:Leukemia / Q000473:pathology*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D014740:Vidarabine / Q000031:analogs & derivatives* / Q000032:analysis*
chemical_list: D000970:Antineoplastic Agents; D014740:Vidarabine; C024352:fludarabine