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Chemotherapeutic treatments: A study of the interplay among drug resistance, toxicity and recuperation from side effects

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Abstract

A system of differential equations for the control of tumor growth cells in a cycle nonspecific chemotherapy is analyzed. Spontaneously acquired drug resistance is taken into account, and a criterion for the selection of chemotherapeutic treatment is used. This criterion purports to describe the possibility of improvement of the patient's health when treatment is discontinued. Contrary to our early results which also take drug resistance into account, in this context strategies of continuous chemotherapy in which rest periods take part may be better than maximum drug concentration throughout the treatment (which appears to be in accordance with clinical practice). This bears out our previous conjecture that when drug resistance is accounted for, the imperfections in the usual modelling of treatment criteria, which in general do not allow for patient recuperation, ruled out the possibility of rest periods in optimal continuous chemotherapy.

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Authors and Affiliations

  1. Laboratório Nacional de Computação Científica, CNPq, R. Lauro Müller, 455, 22290-160, Rio de Janeiro, RJ, Brasil

    M. I. S. Costa

  2. Instituto de Matemática Estatística e Ciência da Computação, Universidade Estadual de Campinas, C.P. 6065, 13081-970, Campinas, SP, Brasil

    J. L. Boldrini

Authors
  1. M. I. S. Costa
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  2. J. L. Boldrini
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Costa, M.I.S., Boldrini, J.L. Chemotherapeutic treatments: A study of the interplay among drug resistance, toxicity and recuperation from side effects. Bltn Mathcal Biology 59, 205–232 (1997). https://doi.org/10.1007/BF02462001

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  • DOI: https://doi.org/10.1007/BF02462001

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