Monolignol Compositional Determinants in Loblolly Pine: Aromatic Amino Acid Metabolism and Associated Rate-Limiting Steps

1999 ◽  
pp. 118-144 ◽  
Author(s):  
Hendrik van Rensburg ◽  
Aldwin M. Anterola ◽  
Lanfang H. Levine ◽  
Laurence B. Davin ◽  
Norman G. Lewis
Keyword(s):  
Amino Acid ◽  
Loblolly Pine ◽  
Aromatic Amino Acid ◽  
Amino Acid Metabolism ◽  
Acid Metabolism ◽  
Aromatic Amino Acid Metabolism ◽  
Rate Limiting

Aromatic amino acid metabolism of neonatal piglets receiving TPN: effect of tyrosine precursors

1994 ◽  
Vol 267 (5) ◽  
pp. E672-E679 ◽  
Author(s):  
L. J. Wykes ◽  
J. D. House ◽  
R. O. Ball ◽  
P. B. Pencharz
Keyword(s):  
Amino Acid ◽  
Aromatic Amino Acid ◽  
Amino Acid Metabolism ◽  
Acid Metabolism ◽  
Central Line ◽  
High Plasma ◽  
Control Group ◽  
Neonatal Piglets ◽  
Aromatic Amino Acid Metabolism ◽  
Plasma Tyrosine

Low tyrosine solubility in total parenteral nutrition (TPN) solutions complicates meeting the aromatic amino acid needs of infants. This study compared the effectiveness of two tyrosine precursors to supply the aromatic amino acid needs of TPN-fed neonatal piglets with a control group in which total aromatic acid needs were met by the addition of phenylalanine (Phe). Eighteen 3-day-old male Yorkshire piglets (6/group) received TPN for 8 days by central line. The solution was supplemented with Phe or one of the following two tyrosine precursors: N-acetyltyrosine (N-AcTyr) or glycyltyrosine (GlyTyr). Aromatic amino acid metabolism, growth, and nitrogen utilization were measured. Average amino acid and energy intakes were 14.6 g.kg-1.day-1 and 1,050 kJ.kg-1.day-1. Nitrogen balance and utilization were significantly higher (P < 0.05) in piglets in the control Phe group and on the GlyTyr regimen. The high urinary excretion of N-AcTyr (65%) confirms its low bioavailability. Flux and oxidation were significantly higher (P < 0.05) in the Phe group. High plasma Phe levels and excretion of Phe catabolites, as well as the high plasma tyrosine in the GlyTyr group, indicate that current strategies employed to meet the aromatic amino acid needs of neonates on TPN need further refinement.

scholarly journals Aromatic Amino Acid Metabolism during Liver Failure

2007 ◽  
Vol 137 (6) ◽  
pp. 1579S-1585S ◽  
Author(s):  
Cornelis H. C. Dejong ◽  
Marcel C. G. van de Poll ◽  
Peter B. Soeters ◽  
Rajiv Jalan ◽  
Steven W. M. Olde Damink
Keyword(s):  
Amino Acid ◽  
Liver Failure ◽  
Aromatic Amino Acid ◽  
Amino Acid Metabolism ◽  
Acid Metabolism ◽  
Aromatic Amino Acid Metabolism

Regulation of hepatic aromatic amino acid metabolism

1986 ◽  
Vol 14 (6) ◽  
pp. 999-1001 ◽  
Author(s):  
CHRISTOPHER I. POGSON ◽  
MARK SALTER ◽  
RICHARD G. KNOWLES
Keyword(s):  
Amino Acid ◽  
Aromatic Amino Acid ◽  
Amino Acid Metabolism ◽  
Acid Metabolism ◽  
Aromatic Amino Acid Metabolism

Aromatic Amino Acid Metabolism Across Species

2021 ◽  
Author(s):  
Jianyong Li ◽  
Christopher J. Vavricka ◽  
Cihan Yang ◽  
Qian Han ◽  
Arthur J.L. Cooper
Keyword(s):  
Amino Acid ◽  
Aromatic Amino Acid ◽  
Amino Acid Metabolism ◽  
Acid Metabolism ◽  
Aromatic Amino Acid Metabolism
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