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Copyright of Anaesthesiologie & Intensivmedizin is the property of DGAI e.V. - Deutsche Gesellschaft fur Anasthesiologie und Intensivmedizin e.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The paper presents a system-based approach for predicting the changes of the plasma concentration and the therapeutic effect of sodium p-aminosalicylate caused by addition of surfactant Tween 80 to a liquid dosage form. A predictive pharmacokinetic model of the oral administration is synthetized together with the corresponding model of its parametric sensitivity. The sensitivities predicted by the model are then compared to those obtained from the in-vi vo experiment. The close correspondence between them is used to prove the model correctness. Similarly the Emax model of the therapeutic effect predicts influences of the added surfactants on the therapeutic effect. In this context, the problem of determining an optimal absorption rate for the desired time course of the therapeutic effect is solved. As a by-product this study, it is shown that the (in-silico generated) sensitivity of plasma concentration to the drug absorption rate may provide information on how far the in-silico experiment can serve as a substitute for in-vivo bioavailability and bioequivalence studies. [ABSTRACT FROM AUTHOR]

Copyright of Anaesthesist is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)