Determination of asperosaponin VI and its active metabolite hederagenin in rat tissues by LC-MS/MS: Application to a tissue distribution study

作者：Zhang, Run; Zhu, He; Ding, Li^*; Yang, Zhonglin

来源：Journal of Chromatography B-Analytical Technologies in the Biomedical and Life Sciences, 2014, 959: 22-26.

DOI：10.1016/j.jchromb.2014.03.030

• Asperosaponin VI
• Hederagenin
• LC-MS/MS
• Tissue distribution

Two high-performance liquid chromatography (HPLC) coupled with electrospray ionization (ESI) mass spectrometry methods were developed and validated for the simultaneous determination of asperosaponin VI (A-VI) and hederagenin (HG) in rats' various tissues. Biological samples were processed with methanol extraction, and glycyrrhetinic acid was chosen as the internal standard (IS). The analytes were separated on a C-18 column with two gradient elution programs for different rat tissue samples. The MS/MS detection was carried out by monitoring the transitions of m/z [M-H](-) 927.5 -> 603.4 for A-VI, m/z [EM-H](-) 471.3 -> 471.3 for HG and m/z [M-H](-) 469.4 -> 425.4 for the IS, respectively. The lower limits of quantification (LLOQ) for the two analytes in different rat tissues were 2-6 ng/mL, respectively. The methods were successfully applied to a tissue distribution study of A-VI and its active metabolite HG in rats. The results of the tissue distribution study showed that the highest concentration of A-VI was in the gastrointestinal (GI) tract. Besides, A-VI was mainly distributed in lung, liver, fat and ovary. HG was almost undetectable in most tissues except for the GI tract.

• 出版日期2014-5-15
• 单位中国药科大学