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Transient behavior towards the stable limit cycle in the Sel’kov model of Glycolysis: A physiological disorder

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  • Das, Tanmay
  • Acharyya, Muktish

Abstract

A simplified model for the complex glycolytic process was historically proposed by Sel’kov. It showed the existence of stable limit cycle as an example of Poincare’-Bendixson theorem. This limit cycle is nothing but the time eliminated Lissajous plot of the concentrations of Adenosine-diphosphate (ADP) and Fructose-6-phosphate (F6P) of a normal/healthy human. Deviation from this limit cycle is equivalent to the deviation of normal physiological behavior. It is very important to know how long a human body will take to reach the glycolytic stable limit cycle, if deviated from it. However, till now the convergence time, depending upon different initial parameter values, was not studied in detail. This may have great importance in understanding the recovery time for a diseased individual deviated from normal cycle. Here the convergence time for different initial conditions has been calculated in original Sel’kov model. It is observed that convergence time, as a function of the distance from the limit cycle, gets saturated away from the cycle. This result seems to be a physiological disorder. A possible mathematical way to incorporate this in the Selkov model, has been proposed.

Suggested Citation

  • Das, Tanmay & Acharyya, Muktish, 2021. "Transient behavior towards the stable limit cycle in the Sel’kov model of Glycolysis: A physiological disorder," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 567(C).
    • Handle: RePEc:eee:phsmap:v:567:y:2021:i:c:s0378437120309821
    DOI: 10.1016/j.physa.2020.125684
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