scholarly journals Complexity of a Peroxidase-Oxidase Reaction Model

Author(s):  
Jason Gallas ◽  
Marcus Hauser ◽  
Lars Folke Olsen

The peroxidase-oxidase oscillating reaction was the first (bio)chemical reaction to show chaotic behaviour. The reaction is rich in bifurcation scenarios, from period-doubling to peak-adding mixed mode oscillations. Here, we study...


The route by which chaos arises from mixed-mode periodic states in a model of the peroxidase enzyme catalysed oxidation of NADH is described. The specific model studied displays a rich variety of exotic dynamical behaviour including simple oscillations, quasiperiodicity, bistability between periodic states, complex periodic oscillations (including the mixed-mode type) and chaos. The route to chaos in this system involves a torus attractor which becomes destabilized and breaks up into a fractal object, a strange attractor. The mixed-mode states correspond to phase-locking on this fractal attractor and are arranged in staircases according to the complexity of the state. In this paper, we investigate the sequence leading from a mixed-mode periodic state to a chaotic one in the staircase region and find a familiar cascade of period-doubling bifurcations, which finally culminate in chaos.



Chemical feedback in the form of chain-branching or autocatalysis can give rise to oscillatory behaviour in very simple models involving only two variables. Many chemical reactions are also exothermic. This chemical heat release can give rise to self-heating and hence to thermal feedback, where the temperature varies as well as the concentrations. When chemical and thermal feedback are coupled, the range of responses that can be observed are increased dramatically. These features are demonstrated through the simple non-isothermal autocatalator scheme p-> A rate = A + 2B-> 3B rate = k1 2, A-^ B rate = kza, C + heat rate = At its simplest, the reaction can be steady or can show simple period-1 oscillations. More complex oscillations, with higher periodicity appear as the experimental conditions are varied, with period doubling, mixed-mode oscillations and aperiodicity (chemical chaos).



2016 ◽  
Vol 26 (09) ◽  
pp. 1630022 ◽  
Author(s):  
Haniyeh Fallah

Pancreatic beta-cells produce insulin to regularize the blood glucose level. Bursting is important in beta cells due to its relation to the release of insulin. Pernarowski model is a simple polynomial model of beta-cell activities indicating bursting oscillations in these cells. This paper presents bursting behaviors of symmetric type in this model. In addition, it is shown that the current system exhibits the phenomenon of period doubling cascades of canards which is a route to chaos. Canards are also observed symmetrically near folds of slow manifold which results in a chaotic transition between [Formula: see text] and [Formula: see text] spikes symmetric bursting. Furthermore, mixed-mode oscillations (MMOs) and combination of symmetric bursting together with MMOs are illustrated during the transition between symmetric bursting and continuous spiking.



2017 ◽  
Vol 16 (4) ◽  
pp. 2165-2195 ◽  
Author(s):  
Cris R. Hasan ◽  
Bernd Krauskopf ◽  
Hinke M. Osinga


2008 ◽  
Vol 18 (1) ◽  
pp. 015102 ◽  
Author(s):  
Daniel Bakeš ◽  
Lenka Schreiberová ◽  
Igor Schreiber ◽  
Marcus J. B. Hauser


2009 ◽  
Vol 2 (4) ◽  
pp. 807-827 ◽  
Author(s):  
Mathieu Desroches ◽  
◽  
Bernd Krauskopf ◽  
Hinke M. Osinga


2015 ◽  
Vol 89 (13) ◽  
pp. 2349-2358 ◽  
Author(s):  
S. N. Blagojević ◽  
Ž. Čupić ◽  
A. Ivanović-Šašić ◽  
Lj. Kolar-Anić


2021 ◽  
Author(s):  
Zdzislaw Trzaska


2017 ◽  
Vol 31 (3) ◽  
pp. 2274-2297 ◽  
Author(s):  
N. A. Slavinskaya ◽  
M. Abbasi ◽  
J. H. Starcke ◽  
R. Whitside ◽  
A. Mirzayeva ◽  
...  


Sign in / Sign up

Export Citation Format

Share Document