Type 2 diabetes is characterized by glucose intolerance, caused by insulin resistance in peripheral metabolic tissues and by impaired glucose-stimulated insulin secretion, the hallmark of beta-cell dysfunction. The glucose tolerance test is used in clinic and research to identify individuals with impaired glucose tolerance and overt type 2 diabetes. It is the most routinely used physiological test for first pass assessment of glucose homeostasis in rodents because of its simplicity. The GTT measures changes in blood glucose concentration over a 2-h period following the administration of a bolus of glucose. However, this simplicity belies several important considerations which need to be addressed, to aid reproducibility and produce interpretable data. Here, we describe in detail how to perform a GTT using four different routes of glucose administration: intraperitoneal, oral, voluntary oral, and intravenous.
CITATION STYLE
Pedro, P. F., Tsakmaki, A., & Bewick, G. A. (2020). The Glucose Tolerance Test in Mice. In Methods in Molecular Biology (Vol. 2128, pp. 207–216). Humana Press Inc. https://doi.org/10.1007/978-1-0716-0385-7_14
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