@article{APS8219,
author = {Ming-mei SHANG and Hai-feng SONG and Xiu-wen LIU and Zhong-ming TANG},
title = {Detection and quantitation of PS20, a phosphorothioate oligodeoxynucleotides in monkey plasma},
journal = {Acta Pharmacologica Sinica},
volume = {25},
number = {6},
year = {2016},
keywords = {},
abstract = {AIM:
To establish the method for quantitation of the phosphorothioate oligodeoxynucleotides (S-ODNs) in plasma.
METHODS:
Two solid-phase extraction columns combined with a strong anion-exchange column were utilized to remove proteins and lipids in plasma, and the salts were removed by a reverse-phase column followed by dialysis with a 2500 Da-cutoff membrane. The concentration of the tested S-ODNs, PS20, and its metabolites extracted from the plasma were determined by the method of non-gel sieving capillary electrophoresis (NGCE) with diode array detection in the presence of internal standard (IS).
RESULTS:
The method was with good base number specificity. Relative standard deviation % of both intra and inter assay were all less than 10 %, and the total mean recovery was about 91 %. The methodology was successfully used to determine the PK behavior of an anti-tumor antisense S-ODNs in monkeys and identify the metabolites with single base difference.
CONCLUSION:
The combined method of solid-phase extraction and NGCE could be used to study the pharmacokinetics of S-ODNs, and the main parameters of the methodology met the requirement of PK study.},
issn = {1745-7254}, url = {http://www.chinaphar.com/article/view/8219}
}