Review Article

Models for the Study of Whole-Body Glucose Kinetics: A Mathematical Synthesis

Table 2

Example literature values from insulin-independent minimal model for describing glucose kinetics.

Reference
Population (species); per group; body weight (kg)Experimental groups/conditionsIsotopePlasma rate of appearance (mg kg−1 min−1)
C T1 T2 T3

[7]Canine (Beagles); 6;
15.2 ± 0.70
Basal (C), total (T1), and peak (T2) in response to single mixed meal U-14C1.572.303.68
Same as above3-3H2.503.035.20
[8]Canine (Beagles); 7;
12.2 ± 1.0 (C);
17.5 ± 1.7 (T1)
Healthy (C) versus obese (T1) 6,6-2H2.80 ± 0.302.50 ± 0.30
[9]Canine (Mongrel); 6;
27.5 ± 1.5 (C); 29.0 ± 1.70 (T2)
Basal (C) after 6 (T1) and 12 (T2) weeks of moderate-fed feeding3-3H2.60 ± 0.503.30 ± 0.503.30 ± 0.50
[10]Canine (Mongrel); 6; ~22 Basal (C), 7 (T1), 40 (T2), and 120 (T3) mU/kg/h constant insulin infusion during clamped euglycemia3-3H3.43 ± 0.323.22 ± 0.299.85 ± 1.6718.3 ± 2.52
Same parameters as above during clamped hyperglycemia6.48 ± 0.408.30 ± 5.6017.3 ± 1.1230.2 ± 4.36
[11]Canine (Mongrel); 6;
21.1 ± 1.13
Basal (C) versus methylprednisolone (T1) 2-3H3.96 ± 0.347.22 ± 0.45
Same as above3-3H2.59 ± 0.233.32 ± 0.17
Same as aboveU-14C2.60 ± 0.163.47 ± 0.30
[12]Canine (Labrador Retriever); 3; BW not reported Basal (C) versus exercise intensities of 40% (T1), 60% (T2), and 85% (T3) 3-3H4.3816.7 ± 1.6218.9 ± 2.8117.7 ± 3.49
[13]Canine (Mongrel); 6; ~22Basal (C); exercise at 60% (T1); mild diabetic after exercise (T2); diabetic treated with Phlorizin after exercise (T3) 3-3H2.14 ± 0.115.81 ± 0.255.17 ± 0.363.83 ± 0.32
[14]Canine (Mongrel); 6;
20.4 ± 1.6
Basal (C), exercise at 60% (T1); primed constant infusion of AICAR (T2) or free fatty acids (T3)3-3H2.29 ± 0.164.95 3.01 ± 0.222.07 ± 0.14
[15]Canine (Mongrel); 8 healthy; 3 diabetic;
20.1 ± 1.6
Basal (C), primed constant infusion of AICAR (T1), methylpalmoxirate (T2) or both (T3) 3-3H2.343.152.612.88
Same as above in diabetic dogs (alloxan induced)3-3H5.83 ± 0.365.69 ± 0.674.25 ± 0.473.94 ± 0.31
[16]Canine (Mongrel); 8; BW not reported Saline (C); pulsatile (T1) or constant (T2) octanoate infusion 3-3H3.00 ± 0.303.30 ± 0.402.60 ± 0.30

C, control group; T1–3, treatment groups 1–3. All flows are expressed in mg glucose kg−1 min−1 to aid comparison; represents nonsteady-state conditions; “basal” refers to fasted rest; data are presented as mean ± SE; AICAR, 5-Aminoimidazole-4-carboxamide ribonucleotide.