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    Exogenous glucagon-like peptide-1 attenuates the glycaemic response to postpyloric nutrient infusion in critically ill patients with type-2 diabetes

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    Author
    Deane, AM; Summers, MJ; Zaknic, AV; Chapman, MJ; Fraser, RJL; Di Bartolomeo, AE; Wishart, JM; Horowitz, M
    Date
    2011-01-01
    Source Title
    Critical Care (UK)
    Publisher
    BIOMED CENTRAL LTD
    University of Melbourne Author/s
    Deane, Adam
    Affiliation
    Medicine and Radiology
    Metadata
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    Document Type
    Journal Article
    Citations
    Deane, A. M., Summers, M. J., Zaknic, A. V., Chapman, M. J., Fraser, R. J. L., Di Bartolomeo, A. E., Wishart, J. M. & Horowitz, M. (2011). Exogenous glucagon-like peptide-1 attenuates the glycaemic response to postpyloric nutrient infusion in critically ill patients with type-2 diabetes. CRITICAL CARE, 15 (1), https://doi.org/10.1186/cc9983.
    Access Status
    Open Access
    URI
    http://hdl.handle.net/11343/255390
    DOI
    10.1186/cc9983
    Abstract
    INTRODUCTION: Glucagon-like peptide-1 (GLP-1) attenuates the glycaemic response to small intestinal nutrient infusion in stress-induced hyperglycaemia and reduces fasting glucose concentrations in critically ill patients with type-2 diabetes. The objective of this study was to evaluate the effects of acute administration of GLP-1 on the glycaemic response to small intestinal nutrient infusion in critically ill patients with pre-existing type-2 diabetes. METHODS: Eleven critically ill mechanically-ventilated patients with known type-2 diabetes received intravenous infusions of GLP-1 (1.2 pmol/kg/minute) and placebo from t = 0 to 270 minutes on separate days in randomised double-blind fashion. Between t = 30 to 270 minutes a liquid nutrient was infused intraduodenally at a rate of 1 kcal/min via a naso-enteric catheter. Blood glucose, serum insulin and C-peptide, and plasma glucagon were measured. Data are mean ± SEM. RESULTS: GLP-1 attenuated the overall glycaemic response to nutrient (blood glucose AUC30-270 min: GLP-1 2,244 ± 184 vs. placebo 2,679 ± 233 mmol/l/minute; P = 0.02). Blood glucose was maintained at < 10 mmol/l in 6/11 patients when receiving GLP-1 and 4/11 with placebo. GLP-1 increased serum insulin at 270 minutes (GLP-1: 23.4 ± 6.7 vs. placebo: 16.4 ± 5.5 mU/l; P < 0.05), but had no effect on the change in plasma glucagon. CONCLUSIONS: Exogenous GLP-1 in a dose of 1.2 pmol/kg/minute attenuates the glycaemic response to small intestinal nutrient in critically ill patients with type-2 diabetes. Given the modest magnitude of the reduction in glycaemia the effects of GLP-1 at higher doses and/or when administered in combination with insulin, warrant evaluation in this group. TRIAL REGISTRATION: ANZCTR:ACTRN12610000185066.

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