Leucine content of dietary proteins is a determinant of postprandial skeletal muscle protein synthesis in adult rats

Table 5 Experiment 2: Post-prandial changes for plasma amino acids ^1-3

Baseline		Whey			Wheat			Wheat + Leu
Time (min)		30	90	135	30	90	135	30	90	135
Leu	86 ± 4	226 ± 17^a*	164 ± 26^a*	173 ± 22^a*	151 ± 8^b*	86 ± 6^b	99 ± 5^b	211 ± 8^a*	137 ± 8^a*	148 ± 3^a*
Ile	69 ± 2	166 ± 11^a*	104 ± 4^a*	134 ± 16^a*	110 ± 6^b*	66 ± 3^b	86 ± 6^b	98 ± 6^b*	60 ± 4^b*	67 ± 1^c
Val	117 ± 5	234 ± 17^a*	161 ± 5^a*	186 ± 19^a*	154 ± 8^b*	91 ± 3^b	104 ± 7^b	131 ± 18^b	77 ± 6^b*	77 ± 2^c*
Lys	608 ± 24	1083 ± 78^*	593 ± 34	688 ± 62	930 ± 64^*	553 ± 28	698 ± 14	933 ± 67	597 ± 55	726 ± 48
Met	49 ± 2	102 ± 6^a*	62 ± 2^a*	80 ± 5^a*	72 ± 3^b*	42 ± 1^b	52 ± 3^b	71 ± 3^b*	44 ± 4^b	46 ± 2^b
Thr	309 ± 9	594 ± 73^*	567 ± 18^a*	554 ± 38^a	383 ± 21	330 ± 18^b	314 ± 22^b	387 ± 12	382 ± 20^ab	308 ± 13^b

¹Plasma amino acids expressed as μmol/L.
²Data are means ± SEM; n = 5−6. Means without a common letter differ between treatments within.
time-points, P < 0.05.* Indicates different from fasted (P < 0.05).
³12 h food-deprived controls.

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