Inverse Correlation between the Nitrogen Balance and Induction of Rat Liver Serine Dehydratase (SDH) by Dietary Protein

2004 ◽  
Vol 68 (4) ◽  
pp. 888-893 ◽  
Author(s):  
Ryuhei KANAMOTO ◽  
Kousuke FUJITA ◽  
Megumi KUMASAKI ◽  
Saeko IMAI ◽  
Makoto KOTARU ◽  
...  
Keyword(s):  
Rat Liver ◽  
Nitrogen Balance ◽  
Dietary Protein ◽  
Inverse Correlation ◽  
Serine Dehydratase

scholarly journals Quantity as Well as Quality of Dietary Protein Affects Serine Dehydratase Gene Expression in Rat Liver

2003 ◽  
Vol 49 (1) ◽  
pp. 33-39 ◽  
Author(s):  
Saeko IMAM ◽  
Iyo YAGI ◽  
Tohru SAEKI ◽  
Makoto KOTARU ◽  
Kimikazu IWAMI
Keyword(s):  
Gene Expression ◽  
Rat Liver ◽  
Dietary Protein ◽  
Serine Dehydratase

scholarly journals Response of the Induction of Rat Liver Serine Dehydratase to Changes in the Dietary Protein Requirement

2003 ◽  
Vol 67 (2) ◽  
pp. 383-387 ◽  
Author(s):  
Saeko IMAI ◽  
Ryuhei KANAMOTO ◽  
Iyo YAGI ◽  
Makoto KOTARU ◽  
Tohru SAEKI ◽  
...  
Keyword(s):  
Rat Liver ◽  
Dietary Protein ◽  
Protein Requirement ◽  
Serine Dehydratase

Dietary protein paradox: decrease of amino acid availability induced by high-protein diets

1993 ◽  
Vol 264 (6) ◽  
pp. G1057-G1065 ◽  
Author(s):  
C. Moundras ◽  
C. Remesy ◽  
C. Demigne
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Dietary Protein ◽  
High Protein ◽  
Glutamine Metabolism ◽  
Metabolic Adaptation ◽  
Casein Diet ◽  
Serine Dehydratase ◽  
High Protein Diets ◽  
Protein Diets

The aim of the present study was to evaluate the effect of changes in dietary protein level on overall availability of amino acids for tissues. For this purpose, rats were adapted to diets containing various concentrations of casein (7.5, 15, 30, and 60%) and were sampled either during the postprandial or postabsorptive period. In rats fed the protein-deficient diet, glucogenic amino acids (except threonine) tended to accumulate in plasma, liver, and muscles. In rats fed high-protein diets, the hepatic balance of glucogenic amino acids was markedly enhanced and their liver concentrations were consistently depressed. This response was the result of a marked induction of amino acid catabolism (a 45-fold increase of liver threonine-serine dehydratase activity was observed with the 60% casein diet). The muscle concentrations of threonine, serine, and glycine underwent changes parallel to plasma and liver concentrations, and a significant reduction of glutamine was observed. During the postabsorptive period, adaptation to high-protein diets resulted in a sustained catabolism of most glucogenic amino acids, which accentuated the drop in their concentrations (especially threonine) in all the compartments studied. The time course of metabolic adaptation from a 60 to a 15% casein diet has also been investigated. Adaptation of alanine and glutamine metabolism was rapid, whereas that of threonine, serine, and glycine was delayed and required 7-11 days. This was paralleled by a relatively slow decay of liver threonine-serine dehydratase (T-SDH) activity in contrast to the rapid adaptation of pyruvate kinase activity after refeeding a high-carbohydrate diet.(ABSTRACT TRUNCATED AT 250 WORDS)

Effect of Dietary Protein Source on the Activity of Polysomal Ornithine Decarboxylase Messenger RNA in Rat Liver

1987 ◽  
Vol 117 (10) ◽  
pp. 1801-1804 ◽  
Author(s):  
Takaaki Kameji ◽  
Yasuko Murakami ◽  
Masaki Takiguchi ◽  
Masataka Mori ◽  
Masamiti Tatibana ◽  
...  
Keyword(s):  
Ornithine Decarboxylase ◽  
Rat Liver ◽  
Dietary Protein ◽  
Messenger Rna ◽  
Protein Source ◽  
Dietary Protein Source
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