A computational investigation of the ventilation structure and maximum rate of metabolism for a physiologically based pharmacokinetic (PBPK) model of inhaled xylene
Physiologically based pharmacokinetic (PBPK) models are systems of ordinary differential equations that estimate internal doses following exposure to toxicants. Most PBPK models use standard equations to describe inhalation and concentrations in blood. This study extends previous work investigating...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Bulgarian Academy of Sciences, Institute of Mathematics and Informatics
2019-02-01
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| Series: | Biomath |
| Subjects: | |
| Online Access: | http://www.biomathforum.org/biomath/index.php/biomath/article/view/1270 |
| _version_ | 1827841740386598912 |
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| author | Karen A Yokley Jaclyn Ashcraft Nicholas S Luke |
| author_facet | Karen A Yokley Jaclyn Ashcraft Nicholas S Luke |
| author_sort | Karen A Yokley |
| collection | DOAJ |
| description | Physiologically based pharmacokinetic (PBPK) models are systems of ordinary differential equations that estimate internal doses following exposure to toxicants. Most PBPK models use standard equations to describe inhalation and concentrations in blood. This study extends previous work investigating the effect of the structure of air and blood concentration equations on PBPK predictions. The current study uses an existing PBPK model of xylene to investigate if different values for the maximum rate of toxicant metabolism can result in similar compartmental predictions when used with different equations describing inhalation. Simulations are performed using values based on existing literature. Simulated data is also used to determine specific values that result in similar predictions from different ventilation structures. Differences in ventilation equation structure may affect parameter estimates found through inverse problems, although further investigation is needed with more complicated models. |
| first_indexed | 2024-03-12T07:56:54Z |
| format | Article |
| id | doaj.art-7967bd3fbf9647bb9afd1f2858771340 |
| institution | Directory Open Access Journal |
| issn | 1314-684X 1314-7218 |
| language | English |
| last_indexed | 2024-03-12T07:56:54Z |
| publishDate | 2019-02-01 |
| publisher | Bulgarian Academy of Sciences, Institute of Mathematics and Informatics |
| record_format | Article |
| series | Biomath |
| spelling | doaj.art-7967bd3fbf9647bb9afd1f28587713402023-09-02T20:07:04ZengBulgarian Academy of Sciences, Institute of Mathematics and InformaticsBiomath1314-684X1314-72182019-02-018110.11145/j.biomath.2019.01.067818A computational investigation of the ventilation structure and maximum rate of metabolism for a physiologically based pharmacokinetic (PBPK) model of inhaled xyleneKaren A Yokley0Jaclyn Ashcraft1Nicholas S Luke2Elon UniversityElon UniversityNorth Carolina A&T State UniversityPhysiologically based pharmacokinetic (PBPK) models are systems of ordinary differential equations that estimate internal doses following exposure to toxicants. Most PBPK models use standard equations to describe inhalation and concentrations in blood. This study extends previous work investigating the effect of the structure of air and blood concentration equations on PBPK predictions. The current study uses an existing PBPK model of xylene to investigate if different values for the maximum rate of toxicant metabolism can result in similar compartmental predictions when used with different equations describing inhalation. Simulations are performed using values based on existing literature. Simulated data is also used to determine specific values that result in similar predictions from different ventilation structures. Differences in ventilation equation structure may affect parameter estimates found through inverse problems, although further investigation is needed with more complicated models.http://www.biomathforum.org/biomath/index.php/biomath/article/view/1270PBPK modeling, xylene |
| spellingShingle | Karen A Yokley Jaclyn Ashcraft Nicholas S Luke A computational investigation of the ventilation structure and maximum rate of metabolism for a physiologically based pharmacokinetic (PBPK) model of inhaled xylene Biomath PBPK modeling, xylene |
| title | A computational investigation of the ventilation structure and maximum rate of metabolism for a physiologically based pharmacokinetic (PBPK) model of inhaled xylene |
| title_full | A computational investigation of the ventilation structure and maximum rate of metabolism for a physiologically based pharmacokinetic (PBPK) model of inhaled xylene |
| title_fullStr | A computational investigation of the ventilation structure and maximum rate of metabolism for a physiologically based pharmacokinetic (PBPK) model of inhaled xylene |
| title_full_unstemmed | A computational investigation of the ventilation structure and maximum rate of metabolism for a physiologically based pharmacokinetic (PBPK) model of inhaled xylene |
| title_short | A computational investigation of the ventilation structure and maximum rate of metabolism for a physiologically based pharmacokinetic (PBPK) model of inhaled xylene |
| title_sort | computational investigation of the ventilation structure and maximum rate of metabolism for a physiologically based pharmacokinetic pbpk model of inhaled xylene |
| topic | PBPK modeling, xylene |
| url | http://www.biomathforum.org/biomath/index.php/biomath/article/view/1270 |
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