| Автор | Poulin, Patrick |
| Автор | Krishnan, Kannan |
| Дата выпуска | 1995 |
| dc.description | A biologically-based algorithm for predicting the tissue: blood partition coefficients (PCs) of organic chemicals has been developed. The approach consisted of (i) describing tissues and blood in terms of their neutral lipid, phospho lipid, and water contents, (ii) obtaining data on the solu bility of chemicals in n-octanol and water, and (iii) calcu lating the tissue: blood PCs by assuming that the solubility of a chemical in n-octanol corresponds to its solubility in neutral lipids, the solubility in water corresponds to the solubility in tissue/blood water fraction, and the solubility in phospholipids is a function of solubility in water and n- octanol.The adequacy of this approach was verified by compar ing the predicted values with previously published experi mental data on human tissue (liver, lung, muscle, kidney, brain, adipose tissue): blood PCs for 23 organic chemicals. In the case of liver, lung, and muscle, the predicted PC val ues were in close agreement with the higher-end of the range of experimental PC values found in the literature. The predicted brain: and kidney: blood PCs were greater than the experimental PCs in most cases by approximately a factor of two. Whereas the adipose tissue: blood PCs of relatively less hydrophilic chemicals were adequately pre dicted, the predicted PCs for relatively more hydrophilic chemicals were much greater than the experimentally- determined values.There was a good agreement between the predicted and experimentally-determined blood solubility of the 23 chemicals chosen for this study, indicating that the over- estimation of tissue:blood PCs by the present method is not due to under-estimation of blood solubility of chemicals. Rather, it might be due to the lower tissue solubility of chemicals observed experimentally due to the complexity of the tissue matrices.This novel approach of describing tissues in terms of the type of lipid and water content should enable the predic tion of the tissue:blood PCs of organic chemicals with information on their solubility in water and n-octanol, for developing physiologically-based toxicokinetic models. |
| Издатель | Sage Publications |
| Тема | partition coefficients |
| Тема | tissue |
| Тема | blood partitioning |
| Тема | physiologically-based pharmacokinetic models |
| Название | A biologically-based algorithm for predicting human tissue: blood partition coefficients of organic chemicals |
| Тип | Journal Article |
| DOI | 10.1177/096032719501400307 |
| Print ISSN | 0960-3271 |
| Журнал | Human and Experimental Toxicology |
| Том | 14 |
| Первая страница | 273 |
| Последняя страница | 280 |
| Аффилиация | Poulin, Patrick, Département de Médecine du Travail et d'Hygiène du Milieu Faculté de Médecine, Université de Montréal, Case Postale 6128, Succursale Centre-Ville, Montreal PQ, H3C 3J7, Canada |
| Аффилиация | Krishnan, Kannan, Département de Médecine du Travail et d'Hygiène du Milieu Faculté de Médecine, Université de Montréal, Case Postale 6128, Succursale Centre-Ville, Montreal PQ, H3C 3J7, Canada |
| Выпуск | 3 |
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