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# Modelling and optimal control of blood glucose levels in the human body

• Regulating the blood glucose level is a challenging control problem for the human body. Abnormal blood glucose levels can cause serious health problems over time, including diabetes. Although several mathematical models have been proposed to describe the dynamics of glucose-insulin interaction, none of them have been universally adopted by the research community. In this paper, we consider a dynamic model of the blood glucose regulatory system originally proposed by Liu and Tang in 2008. This model consists of eight state variables naturally divided into three subsystems: the glucagon and insulin transition subsystem, the receptor binding subsystem and the glucose subsystem. The model contains 36 model parameters, many of which are unknown and difficult to determine accurately. We formulate an optimal parameter selection problem in which optimal values for the model parameters must be selected so that the resulting model best fits given experimental data. We demonstrate that this optimal parameter selection problem can be solved readily using the optimal control software MISER 3.3. Using this approach, significant improvements can be made in matching the model to the experimental data. We also investigate the sensitivity of the resulting optimized model with respect to the insulin release rate. Finally, we use MISER 3.3 to determine optimal open loop controls for the optimized model.
Mathematics Subject Classification: Primary: 49M37; Secondary: 65P99, 92C45, 92C50.

 Citation:

•  [1] F. Chee and T. Fernando, Closed Loop Control of Blood Glucose, Springer, Berlin, 2007. [2] R. Hovorka, V. Canonico, L. J. Chassin, U. Haueter, M. Massi-Benedetti, M. O. Federici, T. R. Pieber, H. C. Schaller, L. Schaupp, T. Vering and M. E. Wilinska, Nonlinear model predictive control of glucose concentration in subjects with type 1 diabetes, Physiological Measurement, 25 (2004), 905-920.doi: 10.1088/0967-3334/25/4/010. [3] IDF Diabetes Atlas, 5th Edition, International Diabetes Federation, Brussels, 2011. [4] L. S. Jennings, M. E. Fisher, K. L. Teo and C. J. Goh, MISER3 Optimal Control Software: Theory and User Manual Version 3, University of Western Australia, Perth, 2004. [5] M. Korach-André, H. Roth, D. Barnoud, M. Péan, F. Péronnent and X. Leverve, Glucose appearance in the peripheral circulation and liver glucose output in men after a large C starch meal, The American Journal of Clinical Nutrition, 80 (2004), 881-886. [6] L. Kovács, B. Kulcsár, A. György and Z. Benyó, Robust servo control of a novel type 1 diabetic model, Optimal Control Applications and Methods, 32 (2011), 215-238.doi: 10.1002/oca.963. [7] Q. Lin, R. Loxton and K. L. Teo, The control parameterization method for nonlinear optimal control: A survey, Journal of Industrial and Management Optimization, 10 (2014), 275-309.doi: 10.3934/jimo.2014.10.275. [8] W. Liu and F. Tang, Modelling a simplified regulatory system of blood glucose at molecular levels, Journal of Theoretical Biology, 252 (2008), 608-620.doi: 10.1016/j.jtbi.2008.02.021. [9] R. Loxton, K. L. Teo and V. Rehbock, Optimal control problems with multiple characteristic time points in the objective and constraints, Automatica, 44 (2008), 2923-2929.doi: 10.1016/j.automatica.2008.04.011. [10] G. Marchetti, M. Barolo, L. Jovanovic and H. Zisser, An improved PID switching control strategy for type 1 diabetes, In Proceeding of the 28th IEEE EMBS Annual International Conference, New York, (2006), 5041-5044.doi: 10.1109/IEMBS.2006.259541. [11] R. Martin and K. L. Teo, Optimal Control of Drug Administration in Cancer Chemotherapy, World Scientific, Singapore, 1993.doi: 10.1142/9789812832542. [12] K. L. Teo, C. J. Goh and K. H. Wong, A Unified Computational Approach to Optimal Control Problems, Longman Scientific and Technical, Essex, 1991.

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