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Table 3 Amino acid concentrations (μmol/l) in blood plasma

From: Alterations in protein and amino acid metabolism in rats fed a branched-chain amino acid- or leucine-enriched diet during postprandial and postabsorptive states

  Fed animals Overnight starved animals
SLD (n = 10) HVLID (n = 10) HLD (n = 9) SLD + S (n =10) HVLID + S (n = 10) HLD + S (n = 10)
Asp 17 ± 1 34 ± 3 a 25 ± 3 11 ± 1 26 ± 3 a 24 ± 6 a
Glu 129 ± 8 111 ± 6 108 ± 4 101 ± 6 129 ± 11 128 ± 10
Ser 254 ± 12 239 ± 4 217 ± 6 a 241 ± 8 232 ± 7 236 ± 7
Asn 70 ± 4 78 ± 2 64 ± 2 c 59 ± 2 b 67 ± 2 b 64 ± 2
Gly 306 ± 23 219 ± 6 a 191 ± 10 a 392 ± 15 b 319 ± 12 a,b 281 ± 10 a,b
Gln 713 ± 25 825 ± 12 a 808 ± 19 a 623 ± 10 b 678 ± 16 b 690 ± 14 a,b
His 66 ± 3 65 ± 2 57 ± 1 a,c 54 ± 2 b 56 ± 1 b 54 ± 2
Tau 324 ± 16 467 ± 50 437 ± 52 227 ± 17 528 ± 57 a 520 ± 31 a
Thr 284 ± 17 206 ± 6 a 206 ± 5 a 232 ± 14 b 230 ± 7 226 ± 6
Ctr 82 ± 4 87 ± 3 79 ± 3 60 ± 2 b 74 ± 2 a,b 69 ± 2
Ala 527 ± 27 667 ± 25 a 627 ± 13 a 364 ± 16 b 379 ± 12 b 412 ± 14 b
Arg 188 ± 9 175 ± 5 165 ± 6 a 150 ± 3 b 165 ± 5 157 ± 4
Pro 262 ± 16 251 ± 7 244 ± 6 131 ± 5 b 147 ± 3 b 140 ± 3 b
Tyr 94 ± 15 77 ± 3 a 71 ± 2 a 89 ± 3 85 ± 3 83 ± 3 b
Cys 123 ± 5 122 ± 2 106 ± 3 123 ± 3 138 ± 5 126 ± 5 b
Val 262 ± 8 444 ± 30 a 158 ± 6 a,c 213 ± 7 213 ± 4 b 206 ± 6
Met 63 ± 3 63 ± 1 56 ± 1 a 55 ± 1 b 52 ± 1 b 52 ± 1
Orn 67 ± 3 68 ± 5 69 ± 3 44 ± 2 b 52 ± 2 b 48 ± 2 b
Lys 339 ± 5 332 ± 9 324 ± 13 334 ± 9 417 ± 13 b 440 ± 11 b
Ile 135 ± 19 227 ± 21 a 91 ± 9 a,c 122 ± 6 122 ± 2 b 134 ± 9 b
Leu 228 ± 18 317 ± 21 a 543 ± 35 a.c 177 ± 7 195 ± 4 b 189 ± 6 b
Phe 72 ± 3 71 ± 1 73 ± 1 69 ± 2 72 ± 2 70 ± 2
BCAA 625 ± 37 988 ± 71 a 793 ± 40 a,c 513 ± 20 530 ± 9 b 529 ± 20 b
∑ - BCAA 3975 ± 151 4157 ± 87 3928 ± 94 3361 ± 86 b 3846 ± 75 a 3819 ± 74 a
  1. Means ± SE, p ˂ 0.05
  2. a compared to the corresponding control (SLD or SLD + S)
  3. b compared to the corresponding fed group
  4. c HLD (HLD + S) vs. HVLID (HVLID + S). Abbreviations as indicated in Table 1