TABLE 1

Plasma concentrations of individual AAs (μmol/l) at baseline (0 min) and at the end of AA and saline infusion (330 min)

AAsTime (min)AAControl
Alanine0284 ± 23245 ± 24
330916 ± 60*265 ± 7
Arginine079 ± 474 ± 6
330278 ± 22*44 ± 3
Asparagine043 ± 138 ± 2
330121 ± 10*25 ± 1
Citrulline035 ± 134 ± 2
33054 ± 417 ± 1
Glutamine0520 ± 30476 ± 50
330738 ± 54393 ± 29*
Glutamate058 ± 1864 ± 16
33062 ± 1248 ± 19*
Glycine0210 ± 7192 ± 16
330714 ± 76*167 ± 13
Histidine091 ± 481 ± 7
330259 ± 2370 ± 5
Isoleucine056 ± 361 ± 4
330127 ± 1512 ± 1
Leucine0113 ± 5106 ± 8
330259 ± 27*43 ± 2*
Methionine036 ± 231 ± 2*
330194 ± 20*14 ± 1*
Phenylalanine047 ± 242 ± 3
330140 ± 1325 ± 1
Serine0116 ± 796 ± 7
330181 ± 1068 ± 3
Taurine036 ± 232 ± 2
33042 ± 3§29 ± 1
Threonine0107 ± 391 ± 6
330266 ± 21*62 ± 3
Tryptophan071 ± 563 ± 4
330117 ± 10*37 ± 3*
Tyrosine051 ± 244 ± 2
33036 ± 222 ± 2*
Valine0197 ± 24196 ± 15
330317 ± 34115 ± 6
Branched-chain AAs0366 ± 27353 ± 29
330703 ± 75*142 ± 30
  • Data are means ± SE of seven healthy subjects who underwent both somatostatin insulin glucagon growth hormone clamp tests.

  • P < 0.001 vs. AA,

  • P < 0.01,

  • P < 0.05.

  • *

    * P < 0.001 vs. corresponding baseline value,

  • P < 0.01,

  • §

    § P < 0.05.