Journal
JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS
Volume 114, Issue -, Pages 200-207Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpba.2015.04.045
Keywords
Pterostilbene; UPLC-MS; Bioavailability; Tissue distribution
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Funding
- National Natural Science Foundation of China [81202996]
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A UPLC-MS method was developed for determination of pterostilbene (PTS) in plasma and tissues of mice. PTS was separated on Agilent Zorbax XDB-C-18 column (50 x 2.1 mm, 1.8 mu m) 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 mu g/g) was found in stomach (dose 28 mg/kg). The bioavailability, peak concentration (C-max), time to peak concentration (T-max) 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. (C) 2015 Elsevier B.V. All rights reserved.
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