Table 2.

Amino Acid Chromatography of Human Plasma

Molecules	Relative Change (%)
Concentration increased after RIPC
3‐Methylhistidine***	7.8
Cystine***	6.0
Kynurenine***	5.9
Arginine***	5.3
Serine***	3.1
AABU***	2.5
1‐Methylhistidine**	8.4
Glutamate*	5.2
Glycine*	2.3
Concentration decreased after RIPC
Aspartate***	−9.2
Ornithine***	−4.7
Tyrosine***	−3.7
Phenylalanine***	−3.4
Tryptophan***	−3.4
Citrulline***	−3.2
Isoleucine**	−1.9
Sarcosine*	−25.8
Valine*	−1.2

AABU indicates α‐aminobutyric acid.

Only metabolite concentrations that varied significantly after remote ischemic preconditioning (RIPC), according to Student t test for paired samples, are displayed. The relative changes (in %) were calculated as 100×(Concentration after RIPC−Concentration before RIPC)/Concentration before RIPC (***P<0.01, **P<0.05, *P<0.08).