title: UPLC-MS method for quantification of pterostilbene and its application to comparative study of bioavailability and tissue distribution in normal and Lewis lung carcinoma bearing mice.
abstract: A UPLC-MS method was developed for determination of pterostilbene (PTS) in plasma and tissues of mice. PTS was separated on Agilent Zorbax XDB-C18 column (50 × 2.1 mm, 1.8 μm) with gradient mobile phase at the flow rate of 0.2 ml/min. The detection was performed by negative ion electrospray ionization in multiple reaction monitoring mode. The linear calibration curve of PTS in mouse plasma and tissues ranged from 1.0 to 5000 and 0.50 to 500 ng/ml (r(2)>0.9979), respectively, with lowest limits of quantification (LLOQ) were between 0.5 and 2.0 ng/ml, respectively. The accuracy and precision of the assay were satisfactory. The validated method was applied to the study of bioavailability and tissue distribution of PTS in normal and Lewis lung carcinoma (LLC) bearing mice. The bioavailability of PTS (dose 14, 28 and 56 mg/kg) in normal mice were 11.9%, 13.9% and 26.4%, respectively; and the maximum level (82.1 ± 14.2 μg/g) was found in stomach (dose 28 mg/kg). The bioavailability, peak concentration (Cmax), time to peak concentration (Tmax) of PTS in LLC mice was increased compared with normal mice. The results indicated the UPLC-MS method is reliable and bioavailability and tissue distribution of PTS in normal and LLC mice were dramatically different.
authors.affiliation: School of Life Science, Beijing Institute of Technology, 5 South Street Zhongguancun, Beijing 100081, China.
authors.forename: Li
authors.initials: L
authors.lastname: Deng
authors.affiliation: China Astronaut Research and Training Centre, Beijing 100094, China.
authors.forename: Yongzhi
authors.initials: Y
authors.lastname: Li
authors.affiliation: Hebei North University, 11 Zuanshi South Road, Zhangjiakou 075000, China.
authors.forename: Xinshi
authors.initials: X
authors.lastname: Zhang
authors.affiliation: School of Life Science, Beijing Institute of Technology, 5 South Street Zhongguancun, Beijing 100081, China.
authors.forename: Bo
authors.initials: B
authors.lastname: Chen
authors.affiliation: School of Life Science, Beijing Institute of Technology, 5 South Street Zhongguancun, Beijing 100081, China.
authors.forename: Yulin
authors.initials: Y
authors.lastname: Deng
authors.affiliation: School of Life Science, Beijing Institute of Technology, 5 South Street Zhongguancun, Beijing 100081, China.
authors.forename: Yujuan
authors.initials: Y
authors.lastname: Li
mesh_terms: D000284:Administration, Oral; D000818:Animals; D019540:Area Under Curve; D001682:Biological Availability; D002138:Calibration; D018827:Carcinoma, Lewis Lung / Q000188:drug therapy*; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D057230:Limit of Detection; D016014:Linear Models; D008175:Lung Neoplasms / Q000188:drug therapy*; D013058:Mass Spectrometry / Q000379:methods*; D051379:Mice; D008810:Mice, Inbred C57BL; D009368:Neoplasm Transplantation; D011786:Quality Control; D015203:Reproducibility of Results; D013267:Stilbenes / Q000032:analysis*; D014018:Tissue Distribution
chemical_list: D013267:Stilbenes; C107773:pterostilbene
keywords: Bioavailability; Pterostilbene; Tissue distribution; UPLC–MS