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首页> 外文期刊>Environmental Science & Technology >Application of Biologically Based Lumping To Investigate the Toxicokinetic Interactions of a Complex Gasoline Mixture
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Application of Biologically Based Lumping To Investigate the Toxicokinetic Interactions of a Complex Gasoline Mixture

机译：基于生物的集总在研究复杂汽油混合物的毒物动力学相互作用中的应用

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摘要

People are often exposed to complex mixtures of environmental chemicals such as gasoline, tobacco smoke, water contaminants, or food additives. We developed an approach that applies chemical lumping methods to complex mixtures, in this case gasoline, based on biologically relevant parameters used in physiologically based pharmacokinetic (PBPK) modeling. Inhalation exposures were performed with rats to evaluate the performance of our PBPK model and chemical lumping method. There were 109 chemicals identified and quantified in the vapor in the chamber. The time-course toxicokinetic profiles of 10 target chemicals were also determined from blood samples collected during and following the in vivo experiments. A general PBPK model was used to compare the experimental data to the simulated values of blood concentration for 10 target chemicals with various numbers of lumps, iteratively increasing from 0 to 99. Large reductions in simulation error were gained by incorporating enzymatic chemical interactions, in comparison to simulating the individual chemicals separately. The error was further reduced by lumping the 99 nontarget chemicals. The same biologically based lumping approach can be used to simplify any complex mixture with tens, hundreds, or thousands of constituents.
机译：人们通常会接触到复杂的环境化学物质混合物，例如汽油，烟草烟雾，水污染物或食品添加剂。我们基于基于生理的药代动力学（PBPK）建模中使用的生物学相关参数，开发了一种将化学集总方法应用于复杂混合物（在本例中为汽油）的方法。用大鼠进行吸入暴露以评估我们的PBPK模型和化学集总法的性能。箱内蒸气中鉴定和定量了109种化学物质。还从体内实验期间和之后收集的血液样本中确定了10种目标化学物质的时程毒物动力学曲线。使用通用的PBPK模型将实验数据与10种目标化学物质的血药浓度模拟值进行比较，这些化学物质的团块数量从0递增到99。从零到99迭代增加。通过比较酶化学相互作用，可以大大降低模拟误差分别模拟每种化学品。通过将99种非目标化学品混为一谈，进一步减少了错误。相同的基于生物的集总方法可用于简化具有数十，数百或数千种成分的任何复杂混合物。

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  • 来源
    《Environmental Science & Technology》 |2016年第6期|3231-3238|共8页
  • 作者

    Micah N. Jasper; Sheppard A. Martin; Wendy M. Oshiro; Jermaine Ford; Philip J. Bushnell; Hisham El-Masri;

  • 作者单位

    National Health and Environmental Effects Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, Research Triangle Park, North Carolina 27709, United States;

    National Health and Environmental Effects Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, Research Triangle Park, North Carolina 27709, United States;

    National Health and Environmental Effects Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, Research Triangle Park, North Carolina 27709, United States;

    National Health and Environmental Effects Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, Research Triangle Park, North Carolina 27709, United States;

    National Health and Environmental Effects Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, Research Triangle Park, North Carolina 27709, United States;

    National Health and Environmental Effects Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, Research Triangle Park, North Carolina 27709, United States,US EPA/NHEERL/ISTD/SBB, 109 T.W. Alexander Drive, B105-03, Research Triangle Park, NC 27709;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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