食品科学

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大鼠血浆中枸杞多糖荧光标记物定量分析方法的建立

陈 忱1,2,唐华丽1,3,马 月1,王少康1,杨立刚1,彭 景4,孙桂菊1,*   

  1. 1.东南大学公共卫生学院营养与食品卫生学系,教育部环境医学工程重点实验室,江苏 南京 210009;
    2.无锡工艺职业技术学院,江苏 无锡 214200;3.重庆三峡学院生命科学与工程学院,重庆 404000;
    4.扬州大学旅游烹饪学院,江苏 扬州 225000
  • 出版日期:2015-01-25 发布日期:2015-01-16
  • 通讯作者: 孙桂菊
  • 基金资助:

    国家自然科学基金面上项目(81273069);国家大学生创新性实验计划项目(1310286097);
    江苏省高等学校大学生实践创新训练计划项目(S2014116)

Establishment of A Method for Detecting Fluorescence Labeled Lycium barbarum Polysaccharide in Rat Plasma

CHEN Chen1,2, TANG Huali1,3, MA Yue1, WANG Shaokang1, YANG Ligang1, PENG Jing4, SUN Guiju1,*   

  1. 1. Key Laboratory of Environmental Medicine and Engineering, Ministry of Education, Department of Nutrition and Food Hygiene,
    School of Public Health, Southeast University, Nanjing 210009, China; 2. Wuxi Institute of Arts and Technology, Wuxi 214200,
    China; 3. College of Life Science and Engineering, Chongqing Three Gorges University, Chongqing 404000, China;
    4. Tourism Institute, Yangzhou University, Yangzhou 225000, China
  • Online:2015-01-25 Published:2015-01-16
  • Contact: SUN Guiju

摘要:

建立大鼠血浆中异硫氰酸荧光素标记的枸杞多糖(fluorescein isothiocyanate labeled Lycium barbarum polysaccharides,LBP-FITC)的荧光定量分析方法,线性方程为y=1 378.7x-14.98(R2=0.998 9),血浆中LBP-FITC质量浓度在0.05~10 μg/mL范围内与荧光强度呈良好的线性关系。方法的精密度、回收率以及稳定性考察分析证明该方法符合生物样品体内定量分析的要求。单次灌胃给予大鼠LBP-FITC后,以药代动力学WinNonlin软件采用非房室模型拟合大鼠单次口服LBP-FITC的经时血药质量浓度数据,计算主要的药代动力学参数为最大峰质量浓度(Cmax)(2.39±0.71) μg/mL、达峰时间(tmax)(1.17±0.41) h;药时曲线下面积AUC0-t为(45.85±7.12)(μg•h)/mL,AUC0-∞为(127.31±39.00)(μg•h)/mL;半衰期(t1/2)为(80.32±32.70) h;清除率为(1693.96±492.47)mL/kg;平均滞留时间为(20.64±1.36) h。

关键词: 异硫氰酸荧光素标记的枸杞多糖, 药代动力学, 稳定性, 回收率

Abstract:

A rapid and sensitive fluorescent method was developed to determine fluorescein isothiocyanate-labeled Lycium
barbarum polysaccharides (LBP-FITC) in rat plasma. The linear calibration curve was obtained in the range from 0.05
to 10 μg/mL in rat plasma and the linear equation was y = 1 378.7x-14.98 (R2 = 0.998 9). The inter-day coefficients of
variation (CVs) at 0.1, 1.0 and 10 μg/mL of LBP-FITC were between 1.97% and 6.90%, and the intraday CVs at the three
concentrations were between 2.62% and 4.15%. The recovery rates of LBP-FITC in rat plasma were between 93.37% and
95.72%. LBP-FITC was stable in rat plasma. The established method is suitable for LBP-FITC pharmacokinetic study. After
oral administration of LBP-FITC to rats, the non-compartmental model was used to calculate the main pharmacokinetic
parameters by WinNonlin software. The results of pharmacokinetic parameters indicated that the peak concentration (Cmax)
was (2.39 ± 0.71) μg/mL, the time to reach the peak value (tmax) was (1.17 ± 0.41) h, the area under the curve (AUC0-t) was
(45.85 ± 7.12) (μg·h)/mL, the AUC0-∞ was (127.31 ± 39.00) (μg·h)/mL, the t1/2 was (80.32 ± 32.70) h, the clearance (CL) was
(1 693.96 ± 492.47) mL/kg, and the mean retention time (MRT) was (20.64 ± 1.36) h.

Key words: fluorescein isothiocyanate-labeled Lycium barbarum polysaccharides (LBP-FITC), pharmacokinetics, stability, recovery rate

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