A mathematical model of the Euglycemic Hyperinsulinemic Clamp

Geltrude Mingrone, Umberto Picchini, Andrea De Gaetano, Simona Panunzi, Susanne Ditlevsen

Risultato della ricerca: Contributo in rivistaArticolo in rivista

18 Citazioni (Scopus)

Abstract

BACKGROUND: The Euglycemic Hyperinsulinemic Clamp (EHC) is the most widely used experimental procedure for the determination of insulin sensitivity, and in its usual form the patient is followed under insulinization for two hours. In the present study, sixteen subjects with BMI between 18.5 and 63.6 kg/m2 were studied by long-duration (five hours) EHC. RESULTS: From the results of this series and from similar reports in the literature it is clear that, in obese subjects, glucose uptake rates continue to increase if the clamp procedure is prolonged beyond the customary 2 hours. A mathematical model of the EHC, incorporating delays, was fitted to the recorded data, and the insulin resistance behaviour of obese subjects was assessed analytically. Obese subjects had significantly less effective suppression of hepatic glucose output and higher pancreatic insulin secretion than lean subjects. Tissue insulin resistance appeared to be higher in the obese group, but this difference did not reach statistical significance. CONCLUSION: The use of a mathematical model allows a greater amount of information to be recovered from clamp data, making it easier to understand the components of insulin resistance in obese vs. normal subjects
Lingua originaleEnglish
pagine (da-a)44-54
Numero di pagine11
RivistaTheoretical Biology and Medical Modelling
Stato di pubblicazionePubblicato - 2005

Keywords

  • Euglycemic Clamp
  • Hyperinsulinemic Clamp
  • mathematical modeling

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