Cited by 241Pancreatic function and diabetesDiabetes Management and ResearchNonlinear Differential Equations Analysis

Modeling the glucose–insulin regulatory system and ultradian insulin secretory oscillations with two explicit time delays

Li, Jiaxu, Kuang, Yang, Mason, Clinton C.·2006·Journal of Theoretical Biology

Abstract

In the glucose-insulin regulatory system, ultradian insulin secretory oscillations are observed to have a period of 50-150 min. After pioneering work traced back to the 1960s, several mathematical models have been proposed during the last decade to model these ultradian oscillations as well as the metabolic system producing them. These currently existing models still lack some of the key physiological aspects of the glucose-insulin system. Applying the mass conservation law, we introduce two explicit time delays and propose a more robust alternative model for better understanding the glucose-insulin endocrine metabolic regulatory system and the ultradian insulin secretory oscillations for the cases of continuous enteral nutrition and constant glucose infusion. We compare the simulation profiles obtained from this two time delay model with those from the other existing models. As a result, we notice many unique features of this two delay model. Based on our intensive simulations, we suspect that one of the possibly many causes of ultradian insulin secretion oscillations is the time delay of the insulin secretion stimulated by the elevated glucose concentration.

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Crossref · 10.1016/j.jtbi.2006.04.002

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  • Time delays are common in modeling the metabolic system.

    “Time delays, which are common in modeling the metabolic system (82–85), may induce uncertainty and make machine learning challenging to capture chaotic phenomena (86, 87).”
  • Both Sturis' and Li's models simulated earlier glucose oscillation than insulin oscillation.

    “Both Sturis' and Li's models simulated earlier glucose oscillation than insulin oscillation.”

    From A mathematical model of brain glucose homeostasis (2009) · cites this paper as [8]

  • Li's model predicted the time difference between glucose and insulin peak levels to be about 20 min, which depended on the glucose infusion rate.

    “For example, Li's model predicted the time difference between glucose and insulin peak levels to be about 20 min, which also depended on the glucose infusion rate.”

    From A mathematical model of brain glucose homeostasis (2009) · cites this paper as [8]

  • The simulated oscillation amplitudes of blood glucose and insulin in the current model were within the amplitude ranges predicted by Li's model.

    “It was confirmed that the simulated oscillation amplitudes of blood glucose and insulin in the current model were within the amplitude ranges predicted by Li's model.”

    From A mathematical model of brain glucose homeostasis (2009) · cites this paper as [8]

  • Li's model demonstrated that both the oscillation amplitude of blood glucose and that of blood insulin depended on the glucose infusion rate.

    “Li's model demonstrated that both the oscillation amplitude of blood glucose and that of blood insulin depended on the glucose infusion rate.”

    From A mathematical model of brain glucose homeostasis (2009) · cites this paper as [8]

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Authors
Li, J., Kuang, Y., & Mason, C. C.
Affiliations
Arizona State University (US)
Corresponding author
Li, Jiaxu
Venue
Journal of Theoretical Biology
Publisher
Elsevier BV
Published
2006-10
Volume
242
Issue
3
Pages
722-735
ISSN
0022-5193 (ISSN-L)
OpenAlex
W2161967671
Cited by
241
References
25
Citations by year
2026: 15 · 2025: 15 · 2024: 11 · 2023: 8 · 2022: 16 · 2021: 12 · 2020: 19 · 2019: 15 · 2018: 9 · 2017: 13 · 2016: 14 · 2015: 14 · 2014: 20 · 2013: 8 · 2012: 10
FWCI
8.50
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Theoretical Biology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Surgery › Pancreatic function and diabetes
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes Management and Research
  • Physical Sciences › Mathematics › Applied Mathematics › Nonlinear Differential Equations Analysis
Keywords
glucose-insulin regulatory system, time delay model, insulin secretion, mass conservation, enteral nutrition, glucose infusion
MeSH terms
Insulin Secretion, Activity Cycles, Computer Simulation, Diabetes Mellitus, Type 2, Enteral Nutrition, Glucose, Humans, Insulin, Islets of Langerhans, Liver, Models, Biological, Secretory Rate, Time Factors

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