Table 2.
Circulating AA, insulin, and glucose concentrations in response to feeding1
| Time (min) | |||||||
|---|---|---|---|---|---|---|---|
| 0 | 30 | 60 | 90 | 120 | 240 | P value | |
| EAA (nmol/mL) | 1010 ± 5.2* | 1404 ± 6.8** | 1422 ± 7.8** | 1357 ± 8.1** | 1437 ± 12.8** | 1012 ± 11.5* | <0.05 |
| NEAA (nmol/mL) | 2028 ± 8.1 | 2124 ± 11.1 | 2234 ± 14 | 2266 ± 16.1 | 2179 ± 27.1 | 1815 ± 18.0 | NS |
| BCAA (nmol/mL) | 451 ± 3.5* | 672 ± 2.1** | 682 ± 3.2** | 630 ± 3.0** | 702 ± 3.5** | 528 ± 2.6* | <0.001 |
| TAA (nmol/mL) | 3038 ± 6.8* | 3528 ± 9.2** | 3657 ± 11.2** | 3623 ± 12.5** | 3616 ± 20.6** | 2827 ± 15.3* | <0.05 |
| Insulin (μU/mL) | 8.3 ± 0.6* | 86.4 ± 7.1** | 103.7 ± 8.0† | 82.5 ± 9.9** | 57.4 ± 6.5§ | 16.6 ± 2.8¶ | <0.001 |
| Glucose (mg/dL) | 81 ± 2.1* | 168 ± 7.0** | 206 ± 10.7† | 186 ± 12.1** | 175 ± 10.5** | 94 ± 7.2** | <0.001 |
1
Values are means ± SEM, n = 6–36. Means in a row with superscripts without a common symbol differ, P < 0.05. Phenylalanine at 240 min is not included in the calculation of EAA and TAA as the flooding dose of [3H] phenylalanine was administered at 210 min and artificially increased levels of EAA and TAA. NEAA: nonessential AA.