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Table 2 Cerebral delivery of large neutral amino acids

From: Cerebral net exchange of large neutral amino acids after lipopolysaccharide infusion in healthy humans

Amino acid

Cerebral delivery μmol/100 g/min Baseline

Cerebral delivery μmol/100 g/min LPS

Phenylalanine

2.8 (2.4-3.2)

3.3 (2.9-3.6)†

Tryptophan

2.6 (2.3-3.0)

2.3 (1.9-2.8)

Tyrosine

3.1 (2.7-3.7)

2.8 (2.3-3.2)

Valine

17.2 (14.3-20.1)

16.2 (13.7-18.6)

Leucine

8.8 (7.1-10.4)

8.4 (7.1-9.6)

Isoleucine

4.6 (3.8-5.3)

4.7 (4.0-5.4)

Methionine

1.1 (1.0-1.2)

0.7 (0.6-0.9)‡†

Histidine

5.7 (4.9-6.5)

4.6 (4.0-5.3)†

Threonine

7.7 (6.5-9.0)

5.8 (4.9-6.9)††

Glutamine

47.3 (39.6-55.1)

36.3 (30.7-42.0)††

  1. LPS = lipopolysaccharide. Different from baseline, †P < 0.05; ††P < 0.01; ‡†P <0.001.