Table 4 Fasting serum concentrations of amino acids
Amino acids (µmol/l) | Total (N = 63) | Men (N = 27) | Women (N = 36) | P sex |
|---|---|---|---|---|
Essential amino acids | ||||
Histidine | 80.7 (78.6, 82.8) | 79.4 (76.3, 82.7) | 81.7 (78.8, 84.6) | 0.55 |
Isoleucine | 68.4 (64.9, 72.0) | 78.6 (73.4, 84.3) | 61.1 (58.1, 64.3) | 1.0 × 10–5 |
Leucine | 136 (130, 142) | 155 (146, 164) | 122 (118, 128) | 1.2 × 10–6 |
Lysine | 196 (189, 202) | 200 (190, 210) | 193 (184, 202) | 0.60 |
Methionine | 28.0 (27.0, 29.1) | 30.0 (28.4, 31.6) | 26.6 (25.4, 27.8) | 6.0 × 10–3 |
Phenylalanine | 72.6 (70.6, 74.6) | 74.6 (71.5, 77.7) | 71.0 (68.5, 73.6) | 0.22 |
Threonine | 140 (133, 147) | 139 (128, 151) | 141 (132, 151) | 0.77 |
Tryptophan | 71.1 (68.8, 73.5) | 76.4 (72.9, 80.0) | 67.2 (64.6, 69.9) | 1.7 × 10–3 |
Valine | 270 (259, 282) | 301 (284, 320) | 248 (238, 259) | 2.8 × 10–5 |
Non-essential amino acids | ||||
Alanine | 381 (364, 400) | 394 (368, 422) | 372 (348, 397) | 0.39 |
Arginine | 97.0 (91.9, 102) | 94.6 (86.2, 103.7) | 98.9 (92.4, 106.0) | 0.60 |
Asparagine | 53.0 (51.1, 54.9) | 51.6 (49.1, 54.3) | 54.1 (51.3, 56.9) | 0.33 |
Aspartate | 21.2 (20.1, 22.4) | 21.1 (19.5, 22.9) | 21.2 (19.6, 23.0) | 0.96 |
Total cysteine | 299 (292, 306) | 301 (293, 311) | 296 (286, 307) | 0.63 |
Glutamate | 67.9 (62.5, 73.7) | 76.8 (69.1, 85.3) | 61.5 (54.7, 69.1) | 0.035 |
Glutamine | 554 (539, 569) | 558 (540, 576) | 550 (528, 574) | 0.84 |
Glycine | 249 (236, 263) | 234 (223, 246) | 262 (240, 286) | 0.14 |
Proline | 167 (155, 178) | 174 (155, 194) | 161 (147, 176) | 0.52 |
Serine | 133 (128, 138) | 128 (121, 136) | 137 (130, 144) | 0.22 |
Tyrosine | 70.1 (66.6, 73.8) | 76.2 (71.8, 81.0) | 65.6 (61.0, 70.5) | 0.022 |