Special Session 83: 

Global Dynamics for a Model of Amyloid Fibril Formation in Pancreatic Islet Beta Cells Subjected to a Therapy

Rodrigue Yves R M`pika Massoukou
North-West University
So Africa
Co-Author(s):    S.C. Oukouomi Noutchie; N.A. Mbroh.
Abstract:
Amyloid Polypeptide (IAPP) fibril formation is the main cause of type II diabetes mellitus (T2DM) disease and cardiovascular disease (CVD). Therefore, implementing therapeutic interventions strategies to control IAPP fibril formation plays a crucial role in preventing and managing T2DM disease and CVD. For this purpose, in this paper, we make use of a mathematical model to investigate the effects of drug therapy on the dynamics of amyloid fibril formation (or amyloid plaques). The model is an hybrid system of differential equations consisting of ODEs and (hyperbolic) PDE. The (global) stability analysis is established through construction of suitable Lyapunov functionals and application of Lasalle`s invariance principle. Stability of the disease steady state is fully determined by a threshold condition, which is based on the total population of IAPP polymers. A substantial parameter in elaborating an efficient therapeutic strategies aiming at controlling and stopping the development of T2DM disease is also revealed.