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Table 2 Mean plasma amino acids concentrations (μmol/L) in calves on the final day of a five day intravenous infusion of saline (control); glucose; essential amino acids (EAA) and glucose + EAA.

From: Effect of prolonged intravenous glucose and essential amino acid infusion on nitrogen balance, muscle protein degradation and ubiquitin-conjugating enzyme gene expression in calves

  Control Glucose EAA EAA+Glucose
Leucine 135a ± 7.83 69.8c ± 5.22 239.6b ± 13.15 155a ± 12.05
Isoleucine 110a ± 6.04 59.1c ± 4.09 193.6b ± 7.09 131a ± 8.77
Valine 252a ± 14.31 135c ± 11.39 465.9b ± 24.50 298d ± 19.09
Histidine 50.5a ± 1.96 30.8c ± 2.79 70.3b ± 1.50 68.6b ± 2.93
Phenylalanine 60.9a ± 2.60 49.0a ± 2.62 186.4b ± 6.78 185b ± 9.80
Tyrosine 50.9a ± 2.60 43.6a ± 4.15 67.5b ± 7.04 86.1b ± 6.81
Methionine 15.8a ± 1.31 11.4a ± 1.10 34.7b ± 2.17 36.9b ± 2.03
Arginine 129a ± 8.26 78.6c ± 6.99 169.9b ± 3.39 166b ± 7.54
Lysine 118a ± 7.87 56.9c ± 5.18 186.1b ± 8.84 166b ± 10.5
Threonine 111a ± 7.68 80.2a ± 7.61 179.7b ± 11.49 202b ± 11.24
Tryptophan 34.9ac ± 2.89 27.7a ± 1.87 41.7bc ± 1.07 44.7bc ± 1.68
Serine 76.4 ± 6.15 101 ± 7.29 62.8 ± 4.26 80.7 ± 4.33
Aspartate 25.7 ± 0.89 28.1 ± 0.38 18.8 ± 1.42 21.6 ± 0.98
Asparagine 29.0 ± 2.26 26.1 ± 1.64 22.7 ± 1.65 25.5 ± 1.06
Glutamate 137 ± 12.71 110 ± 5.47 118 ± 9.23 131 ± 8.17
Glutamine 188 ± 13.45 197 ± 10.13 154 ± 9.50 164 ± 9.04
Proline 77.5 ± 3.90 63.0 ± 3.02 63.1 ± 2.99 63.4 ± 2.02
Glycine 221 ± 27.55 386 ± 23.55 156 ± 23.12 292 ± 26.17
Alanine 228 ± 5.79 142 ± 9.72 171 ± 11.77 159 ± 8.40
Citrulline 73.4 ± 5.28 52.6 ± 3.19 77.6 ± 9.05 66.2 ± 3.54
Ornithine 101 ± 8.03 52.2 ± 4.16 117 ± 9.05 84.7 ± 5.71
TAA 2272abc ± 80.10 1842ab ± 106.30 2837c ± 74.53 2687bc ± 117.92
BCAA 497a ± 2.95 264b ± 27.06 899c ± 41.74 584ac ± 33.92
EAA 1018a ± 39.72 598b ± 57.86 1767c ± 37.42 1336d ± 78.87
NEAA 1259 ± 52.10 1243a ± 7.99 1086a ± 48.99 1233a ± 7.99
  1. 6 plasma samples were taken at hourly intervals during the last 6 hours of the infusion and pooled prior to analysis. TAA, total amino acids; BCAA, branched chain aminoacids; NEAA, non-essential amino acids. Values are means ± standard error of the mean (SEM). a,b,c Values within the same row with different superscripts are significantly different (P < 0.05).