Table 3.
Precursor Contribution to the Synthesis of |
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---|---|---|---|---|
Citrulline as %RaCitrulline |
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Ornithine as %RaOrnithine | From Plasma Ornithine | In Gut | Total | |
Fasting | ||||
Arterial | ||||
Arginine | 61.6 ± 3.72 | 11.5 ± 0.71 | −4.8 ± 0.40 | 6.7 ± 0.63 |
Glutamine | 20.1 ± 3.55 | 3.7 ± 0.62 | 4.8 ± 0.80 | 8.5 ± 0.28 |
Proline | 10.4 ± 1.35 | 2.0 ± 0.30 | 10.9 ± 2.0 | 12.9 ± 1.92 |
Ornithine | 18.6 ± 0.56 | |||
Sum fasting | 92.1 ± 5.32 | 28.0 ± 2.04 | ||
Fed | ||||
Arterial | ||||
Arginine | 47.0 ± 6.99 | 12.6 ± 1.93 | −5.5 ± 1.30 | 7.1 ± 0.67 |
Glutamine | 16.4 ± 2.55 | 4.4 ± 0.70 | −0.1 ± 0.79* | 4.3 ± 0.62 |
Proline | 14.8 ± 1.12 | 3.9 ± 0.33 | 8.3 ± 1.31 | 12.2 ± 1.10 |
Ornithine | 26.7 ± 0.72 | |||
Enteral | ||||
Arginine | 0.4 ± 0.67* | 0.1 ± 0.18* | 1.1 ± 0.27 | 1.2 ± 0.34 |
Glutamine | 2.4 ± 0.27 | 0.6 ± 0.07 | 4.1 ± 0.87 | 4.7 ± 0.88 |
Proline | 18.6 ± 2.62 | 5.0 ± 0.81 | 22.8 ± 2.87 | 27.8 ± 2.44 |
Sum fed | 99.5 ± 8.00 | 57.3 ± 2.98 |
Values are means ± SE.
Not different from zero.