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Parameter identification and model verification in systems of partial differential equations applied to transdermal drug delivery

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  • Schittkowski, Klaus

Abstract

The purpose of this paper is to present some numerical tools which facilitate the interpretation of simulation or data fitting results and which allow computation of optimal experimental designs. They help to validate mathematical models describing the dynamical behavior of a biological, chemical, or pharmaceutical system, without requiring a priori knowledge about the physical or chemical background. Although the ideas are quite general, we will concentrate our attention to systems of one-dimensional partial differential equations and coupled ordinary differential equations. A special application model serves as a case study and is outlined in detail. We consider the diffusion of a substrate through cutaneous tissue, where metabolic reactions are included in form of Michaelis–Menten kinetics. The goal is to simulate transdermal drug delivery, where it is supposed that experimental data are available for substrate and metabolic fluxes. Numerical results are included based on laboratory data to show typical steps of a model validation procedure, i.e., the interpretation of confidence intervals, the compliance with physical laws, the identification and elimination of redundant model parameters, the computation of optimum experimental designs and the identifiability of parameters by determining weight distributions.

Suggested Citation

  • Schittkowski, Klaus, 2008. "Parameter identification and model verification in systems of partial differential equations applied to transdermal drug delivery," Mathematics and Computers in Simulation (MATCOM), Elsevier, vol. 79(3), pages 521-538.
    • Handle: RePEc:eee:matcom:v:79:y:2008:i:3:p:521-538
    DOI: 10.1016/j.matcom.2008.02.025
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    References listed on IDEAS

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    1. Gallant, A. Ronald, 1975. "Seemingly unrelated nonlinear regressions," Journal of Econometrics, Elsevier, vol. 3(1), pages 35-50, February.
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