A new dynamic index of insulin sensitivity

Gianluigi Pillonetto, Andrea Caumo, Giovanni Sparacino, Claudio Cobelli

Research output: Contribution to journalArticlepeer-review

Abstract

Insulin sensitivity is a crucial parameter of glucose metabolism. The standard measures of insulin sensitivity obtained by an euglycaemic hyperinsulinaemic clamp, S I (clamp), or by the minimal model (MM), S I, do not account for the dynamics of insulin action, i.e., how fast or slow insulin action reaches its plateau value. This is an important physiological information. In this paper we formally define a new insulin sensitivity index which also incorporates information on the dynamics of insulin action, S I D, show its properties, and exemplify how it can be measured both with the clamp and the MM method. Then, by resorting to real and synthetic data, we show both in IVGTT MM and clamp studies why this new index S I D offers, in comparison with S I, a more comprehensive picture of the control of insulin on glucose.

Original languageEnglish
Article number1597487
Pages (from-to)369-379
Number of pages11
JournalIEEE Transactions on Biomedical Engineering
Volume53
Issue number3
DOIs
Publication statusPublished - Mar 2006

Keywords

  • Bayesian estimation
  • Diabetes
  • Glucose clamp
  • Insulin resistance
  • Markov chain Monte Carlo
  • Minimal model

ASJC Scopus subject areas

  • Biomedical Engineering

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