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Muscle Fractional Protein Synthesis Is Higher in Iberian than in Landrace Growing Pigs Fed Adequate or Lysine-Deficient Diets1-3
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ABSTRACT
Protein deposition in Iberian pigs is low and the reasons for this are unknown. We investigated differences in protein synthesis rate in tissues of 30 Iberian and Landrace gilts fed 2 diets with adequate amino acid composition containing 160 or 120 g crude protein (CP)/kg, or a lysine-deficient diet (containing 120 or 160 g CP/kg for Iberian and Landrace pigs, respectively). Pigs were infused with a flooding dose of phenylalanine (15% as [^sup 2^H^sub 5^]-phenylalanine). Blood...
Related newspaper, magazine, and journal articles from HighBeam Research
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Effect of Amino Acid Infusion on Human Postoperative Colon Protein Synthesis in Situ
JPEN, Journal of Parenteral and Enteral Nutrition
; ABSTRACT. Background: Amino acids are an integral part of parenteral nutrition because of their anabolic action helping to conserve body protein after surgical stress. At the gastrointestinal tract, an adequate supply of amino acids may be particularly important because of the gut's high rate of
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Luminal amino acids acutely decrease intestinal mucosal protein synthesis and protease mRNA in piglets
The Journal of Nutrition
; Luminal Amino Acids Acutely Decrease Intestinal Mucosal Protein Synthesis and Protease mRNA in Piglets1,2 ABSTRACT Because parenteral feeding is associated with negative N balance and reduced rates of protein synthesis in intestinal mucosa, we hypothesized that luminal exposure to specific amino
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Rates of lysine catabolism are inversely related to rates of protein synthesis when measured concurrently in adult female rats induced to grow at different rates
The Journal of Nutrition
; Rates of Lysine Catabolism Are Inversely Related to Rates of Protein Synthesis When Measured Concurrently in Adult Female Rats Induced to Grow at Different Rates1,2,3 Mark J. Gahl4 N. J. Benevenga*^5 and Thomas D. Crenshaw^ ABSTRACT To test the effect of changes in the rate of protein synthesis on
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Roles of insulin and amino acids in the regulation of protein synthesis in the neonate
The Journal of Nutrition
; Roles of Insulin and Amino Acids in the Regulation of Protein Synthesis in the Neonate1,2 Teresa A. Davis,3 Douglas G. Burrin, Marta L. Fiorotto, Peter J. Reeds and Farook Jahoor ABSTRACT Neonates deposit protein at a very high rate and efficiently utilize dietary amino acids for protein
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Animal Models of Amino Acid Metabolism: A Focus on the Intestine1
The Journal of Nutrition
; ABSTRACT One important advantage of animal models is that they permit invasive approaches and can be especially valuable when evaluating tissue and specific features of metabolism in situ. The focus of this presentation is current models, which are providing insights into the pivotal importance of
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A working model of protein synthesis using Lego building blocks
The American Biology Teacher
; Introduction The effectiveness of instruction about protein synthesis can be greatly improved by using a handson model. Mensch and Rubba (1991) found that using two hands-on models of protein synthesis as instructional activities helped students develop significantly more positive attitudes towards
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The Increase in Human Muscle Protein Synthesis Induced by Food Intake Is Similar When Assessed with the Constant Infusion and Flooding Techniques1
The Journal of Nutrition
; ABSTRACT Food intake is accompanied by a stimulation of muscle protein synthesis. However, the reported magnitude of the response differs with different methods of measurement. The aim of this study was to assess whether the response to feeding is dependent on the technique used for measurement
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Leucine Regulates Translation Initiation of Protein Synthesis in Skeletal Muscle after Exercise1,2
The Journal of Nutrition
; ABSTRACT High-performance physical activity and postexercise recovery lead to significant changes in amino acid and protein metabolism in skeletal muscle. Central to these changes is an increase in the metabolism of the BCAA leucine. During exercise, muscle protein synthesis decreases together with
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Colostrum enhances the nutritional stimulation of vital organ protein synthesis in neonatal pigs
The Journal of Nutrition
; ABSTRACT Our objective was to determine the relative importance of the macronutrient components of colostrum in the stimulation of vital organ protein synthesis in neonatal pigs. We studied colostrum-deprived newborn pigs within 4-6 h after birth (unfed) and three groups fed for 24 h mature milk,
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Leucine-supplemented meal feeding for ten days beneficially affects postprandial muscle protein synthesis in old rats
The Journal of Nutrition
; ABSTRACT Acute leucine supplementation of the diet has been shown to blunt defects in postprandial muscle protein metabolism in old rats. This study was undertaken to determine whether the effect of leucine persists in a 10-d experiment. For this purpose, adult (9 mo) and old (21 mo) rats were fed
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