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作者单位:Philip J. Aston (1) Gianne Derks (1) Balaji M. Agoram (2) Piet H. van der Graaf (3)
1. Department of Mathematics, University of Surrey, Guildford, UK 2. MedImmune, Pharmacokinetics/Dynamics and Bioanalysis, Cambridge, UK 3. Leiden Academic Centre for Drug Research (LACDR), 2300 RA, Leiden, The Netherlands
ISSN:1432-1416
文摘
We consider the possibility of free receptor (antigen/cytokine) levels rebounding to higher than the baseline level after one or more applications of an antibody drug using a target-mediated drug disposition model. Using geometry and dynamical systems analysis, we show that rebound will occur if and only if the elimination rate of the drug–receptor product is slower than the elimination rates of the drug and of the receptor. We also analyse the magnitude of rebound through approximations and simulations and demonstrate that it increases if the drug dose increases or if the difference between the elimination rate of the drug–receptor product and the minimum of the elimination rates of the drug and of the receptor increases.