 |
 |

Abnormalities of Phenylalanine and Tyrosine KineticsSignificance in Septic and Nonseptic Burned Patients
Capt David N. Herndon, MC, USA;
Douglas W. Wilmore, MD;
Arthur D. Mason, Jr, MD;
Col Basil A. Pruitt, Jr, MC, USA
Arch Surg. 1978;113(2):133-135.
Abstract
The flow of phenylalanine, the essential amino acid precursor of thyroid hormone and catecholamines, was severely elevated in five septic burned patients (6.70 ± 1.07 mg/kg) and six nonseptic burned patients (5.00 ± 0.44 mg/kg) when compared with seven normal controls (2.10 ± 0.33 mg/kg). Fasting serum concentrations of phenylalanine were elevated in the septic burned patients (2.33 ± 0.37 mg/100 ml of serum) relative to the nonseptic patients (1.28 ± 0.21 mg/100 ml) and the controls (1.01 ± 0.15 mg/100 ml). The rate of appearance of the phenylalanine metabolite, tyrosine, after an oral phenylalanine dose was normal in all burn patients. Increased serum concentrations and increased flow of phenylalanine are an index of rapid protein catabolism, further augmented by sepsis in the thermally injured, and not a reflection of decreased hepatic conversion of phenylalanine to tyrosine.
(Arch Surg 113:133-135, 1978)
Author Affiliations
From the United States Army Institute of Surgical Research, Brooke Army Medical Center, Fort Sam Houston, Tex. Dr Herndon is presently at the New York Hospital, Cornell Medical Center, New York.
Footnotes
Accepted for publication Aug 15, 1977.
The opinions or assertions contained herein are the private views of the authors and are not to be construed as official or as reflecting the views of the Department of the Army or the Department of Defense.
Reprints are not available.
CiteULike Connotea Del.icio.us Digg Reddit Technorati Twitter
What's this?
THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES
Amino acid kinetics in patients with sepsis
Druml et al.
Am. J. Clin. Nutr. 2001;73:908-913.
ABSTRACT
| FULL TEXT
Treatment of burned rats with insulin-like growth factor I inhibits the catabolic response in skeletal muscle
Fang et al.
Am. J. Physiol. Regul. Integr. Comp. Physiol. 1998;275:R1091-R1098.
ABSTRACT
| FULL TEXT
Review: Amino Acid Metabolism in Thermal Burns
Cynober
JPEN J Parenter Enteral Nutr 1989;13:196-205.
ABSTRACT
Metabolic Interaction Between Skeletal Muscle and Liver During Bacteremia
Harkema et al.
Arch Surg 1988;123:1415-1419.
ABSTRACT
The Physiologic and Nutritional Significance of Plasma-free Amino Acid Levels
Abumrad and Miller
JPEN J Parenter Enteral Nutr 1983;7:163-170.
|