TABLE 2.
Fasting glucose and insulin concentrations in WT and Ucp1−/− mice housed at 23°C or 28°C and fed control or methionine-restricted diets for 11 weeks
| Characteristic | Housing temperature |
|||||||
|---|---|---|---|---|---|---|---|---|
| 23°C |
28°C |
|||||||
| WT |
Ucp1−/− |
WT |
Ucp1−/− |
|||||
| Control | MR | Control | MR | Control | MR | Control | MR | |
| Glucose (mg/dl) | 209 ± 14b | 189 ± 7b,c | 185 ± 5b,c | 160 ± 11c | 177 ± 9b,c | 166 ± 14c | 148 ± 5c | 90 ± 10d |
| Insulin (ng/ml) | 1.3 ± 0.2b | 0.37 ± 0.1c | 0.47 ± 0.1c | 0.26 ± 0.1c | 1.3 ± 0.2b | 0.42 ± 0.1c | 1.4 ± 0.3b | 0.31 ± 0.1c |
Blood glucose was measured after a 6-hour food withdrawal after 10 weeks on diet; serum insulin was measured after 11 weeks on diet after a 4-hour food withdrawal. The serum parameters were compared by a 3-way analysis of variances using genotype, housing temperature, and diet as main effects and testing for interactions. Least squares means were compared using residual variance as the error term and presented as means ± sem (n = 8/group). Means denoted with different superscripts (a–d) differ at P < 0.05.