Table 1.
WWITHOUT | WWITH METFORMIN | HHTgWITHOUT | HHTgWITH METFORMIN | PSTRAIN | PTREATMENT | PINTERACTION | |
---|---|---|---|---|---|---|---|
Body weight (g) | 428 ± 12 | 432 ± 10 | 411 ± 9 | 395 ± 6 | <0.01 | n.s. | n.s. |
LV weight (g/100 g b.w.) | 0.131 ± 0.006 | 0.135 ± 0.005 | 0.134 ± 0.003 | 0.143 ± 0.004 | n.s. | n.s. | n.s. |
EAT weight (g/100 g b.w.) | 1.235 ± 0.034 | 1.196 ± 0.061 | 1.839 ± 0.038 | 1.536 ± 0.048 *** | <0.001 | <0.001 | <0.01 |
Non-fasting glucose (mmol/L) | 6.6 ± 0.2 | 6.6 ± 0.1 | 8.6 ± 0.2 | 8.1 ± 0.2 * | <0.001 | n.s. | n.s. |
AUC0-180min (mmol/L) | 1268 ± 22 | 1176 ± 13 ** | 1476 ± 18 | 1417 ± 13 * | <0.001 | <0.001 | n.s. |
HOMA-IR | 2.1 ± 0.1 | 1.8 ± 0.1 * | 2.7 ± 0.1 | 2.3 ± 0.1 ** | <0.001 | <0.001 | n.s. |
Insulin (nmol/L) | 0.279 ± 0.022 | 0.240 ± 0.036 | 0.273 ± 0.028 | 0.238 ± 0.041 | n.s. | n.s. | n.s. |
Glucagon (pg/mL) | 224.61 ± 14.82 | 212.51 ± 12.33 | 191.22 ± 13.38 | 158.84 ± 4.94 | <0.01 | n.s. | n.s. |
Serum TG (mmol/L) | 1.56 ± 0.11 | 1.03 ± 0.08 * | 3.45 ± 0.26 | 2.65 ± 0.20 ** | <0.001 | <0.001 | n.s. |
Serum cholesterol (mmol/L) | 1.51 ± 0.07 | 1.37 ± 0.06 | 1.77 ± 0.03 | 1.84 ± 0.03 | <0.001 | n.s. | <0.05 |
HDL-C (mmol/L) | 1.27 ± 0.08 | 1.15 ± 0.06 | 0.88 ± 0.03 | 0.91 ± 0.03 | <0.001 | n.s. | n.s. |
NEFA (mmol/L) | 0.496 ± 0.020 | 0.449 ± 0.022 | 0.713 ± 0.015 | 0.646 ± 0.017 * | <0.001 | <0.01 | n.s. |
Two-way ANOVA results: PSTRAIN denotes the significance of W vs. HHTg (strain effects); PTREATMENT denotes the significance of metformin treatment (treatment effects); PINTERACTION denotes the significance of metformin treatment in both strains (treatment vs. strain interaction). For multiple comparisons (metformin treatment vs. non-treated controls), Fisher’s LSD post-hoc test was used; * denotes p < 0.05; ** denotes p < 0.01; *** denotes p < 0.001. Data are mean ± SEM; n = 8 for each group. LV—left ventricle; EAT—epididymal adipose tissue.