scholarly journals Short time L-glutamine supplementation of malnourished rats

2005 ◽  
Vol 18 (6) ◽  
pp. 719-725 ◽  
Author(s):  
Andréa Ferreira Schuwartz Tannus ◽  
Márcia Morandi Junqueira-Franco ◽  
Vivian Marques Miguel Suen ◽  
Guilherme Vannucchi Portari ◽  
Júlio Sérgio Marchini
Keyword(s):  
Amino Acid ◽  
Protein Energy Malnutrition ◽  
Plasma Amino Acid ◽  
Nitrogen Excretion ◽  
Glutamine Supplementation ◽  
Nitrogen Accumulation ◽  
Protein Energy ◽  
Short Time ◽  
Tissue Nitrogen ◽  
Urinary Nitrogen

OBJETIVE: Considering that in malnourished patients supplemented with L-glutamine the negativity of the nitrogen balance tends to decrease, the present study aimed to determine whether malnourished Wistar rats supplemented with L-glutamine would show lower urinary nitrogen excretion, a greater deposition of nitrogen content in different tissues, and/or an alteration in the plasma amino acid levels. METHODS: The rats were divided into groups: 1) protein-energy malnutrition, 2) protein malnutrition and 3) normally nourished group. The urinary and tissue nitrogen contents were determined by the Kjeldahl method and plasma amino acids by liquid chromatography. RESULTS: Weight, urinary and tissue nitrogen accumulation were significantly reduced in the group with protein-energy malnutrition, but did not improve with L-glutamine supplementation supplied for a short time. The plasma amino acid concentrations showed no special pattern with L-glutamine supplementation. CONCLUSION: It was concluded that it was not possible to detect any positive effect of L-glutamine supplementation on the tissue and urinary nitrogen metabolism in malnourished rats.

scholarly journals Plasma amino acid concentrations in elderly patients with protein energy malnutrition

1997 ◽  
Vol 26 (6) ◽  
pp. 457-462 ◽  
Author(s):  
ANNE POLGE ◽  
ETIENNETTE BANCEL ◽  
HELENE BELLET DENISE STRUBEL ◽  
SOPHIE POIREY PASCALE PERAY ◽  
CHRISTINE CARLET ◽  
...  
Keyword(s):  
Amino Acid ◽  
Elderly Patients ◽  
Protein Energy Malnutrition ◽  
Plasma Amino Acid ◽  
Protein Energy ◽  
Amino Acid Concentrations

scholarly journals Efficiency of post-dilution online hemodiafiltration therapy in combination with ketoanalogues of amino acid in the correction of protein-energy malnutrition in hemodialysis patients

2018 ◽  
pp. 174-178 ◽  
Author(s):  
A. A. Yakovenko
Keyword(s):  
Body Weight ◽  
Amino Acid ◽  
Protein Energy Malnutrition ◽  
Ideal Body Weight ◽  
Hemodialysis Patients ◽  
Adequate Intake ◽  
Essential Nutrients ◽  
Protein Energy ◽  
Ideal Body ◽  
Keto Analogues

Purpose of the study. Evaluate the efficiency of permanent post-dilution online hemodiafiltration therapy in combination with the prescription of keto analogues of amino acid at a dose of 0,2 g/kg of ideal body weight/day to correct protein-energy malnutrition in hemodialysis patients with adequate intake of essential nutrients. Patients and methods. A total of 645 patients with terminal renal failure received programmed hemodialysis, of which there were 300 men and 345 women aged 58,8 ± 6,9 years. All patients received treatment with programmed GD for 6,9 ± 2,1 years. All patients underwent a comprehensive assessment of nutritional status. The level of leptin and interleukin-6 serum was determined. Patients with signs of protein-energy malnutritian (PEM) were divided into three groups, depending on the method of PEM correction. Results. The study showed the efficiency of postdilution online hemodiafiltration therapy on an ongoing basis in combination with keto-analogues of amino acids at a dose of 0,2 g/kg of ideal body weight/day for correction of PEM in hemodialysis patients. Conclusion. The post-dilution online hemodiafiltration therapy combined with keto-analogues of amino acid at a dose of 0.2 g /kg of ideal body weight/day can be considered one of the pathogenetically grounded methods for correcting PEM in patients receiving programmed hemodialysis with adequate intake of essential nutrients. 

scholarly journals Enteral Glutamine Supplementation for the Very Low Birthweight Infant: Plasma Amino Acid Concentrations

1996 ◽  
Vol 126 (suppl_4) ◽  
pp. 1115S-1120S ◽  
Author(s):  
J. C. Roig ◽  
William H. Meetze ◽  
Nancy Auestad ◽  
Tammy Jasionowski ◽  
Mark Veerman ◽  
...  
Keyword(s):  
Amino Acid ◽  
Low Birthweight ◽  
Plasma Amino Acid ◽  
Glutamine Supplementation ◽  
Very Low Birthweight ◽  
Amino Acid Concentrations ◽  
Very Low Birthweight Infant

scholarly journals PLASMA PROTEIN PRODUCTION INFLUENCED BY AMINO ACID MIXTURES AND LACK OF ESSENTIAL AMINO ACIDS

1945 ◽  
Vol 82 (2) ◽  
pp. 77-92 ◽  
Author(s):  
S. C. Madden ◽  
F. W. Anderson ◽  
J. C. Donovan ◽  
G. H. Whipple
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Plasma Protein ◽  
Protein Production ◽  
Daily Intake ◽  
Essential Amino Acids ◽  
Nitrogen Excretion ◽  
Acid Mixture ◽  
Rapid Weight Loss ◽  
Urinary Nitrogen

When blood plasma proteins are depleted by bleeding with return of red cells suspended in saline (plasmapheresis) it is possible to bring dogs to a steady state of hypoproteinemia and a constant level of plasma protein production if the diet nitrogen intake is controlled and limited. Such dogs are outwardly normal but have a lowered resistance to infection and intoxication and probably to vitamin deficiency. When the diet nitrogen is provided by certain mixtures of the ten growth essential amino acids plus glycine, given intravenously at a rapid rate, plasma protein production is good. The same mixture absorbed subcutaneously at a slower rate may be slightly better utilized. Fed orally the same mixture is better utilized and associated with a lower urinary nitrogen excretion. An ample amino acid mixture for the daily intake of a 10 kilo dog may contain in grams dl-threonine 1.4, dl-valine 3, dl-leucine 3, dl-isoleucine 2, l(+)-lysine·HCl·H2O 2.2, dl-tryptophane 0.3, dl-phenylalanine 2, dl-methionine 1.2, l(+)-histidine·HCl·H2O 1, l(+)-arginine·HCl 1, and glycine 2. Half this quantity is inadequate and not improved by addition of a mixture of alanine, serine, norleucine, proline, hydroxyproline, and tyrosine totalling 1.4 gm. Aspartic acid appears to induce vomiting when added to a mixture of amino acids. The same response has been reported for glutamic acid (8). Omission from the intake of leucine or of leucine and isoleucine results in negative nitrogen balance and rapid weight loss but plasma protein production may be temporarily maintained. It is possible that leucine may be captured from red blood cell destruction. Tryptophane deficiency causes an abrupt decline in plasma protein production. No decline occurred during 2 weeks of histidine deficiency but the urinary nitrogen increased to negative balance. Plasma protein production may be impaired during conditions of dietary deficiency not related to the protein or amino acid intake. Skin lesions and liver function impairment are described. Unidentified factors present in liver and yeast appear to be involved.

Wheat Bread: Potential Approach to Fortify its Lysine Content

2019 ◽  
Vol 15 (7) ◽  
pp. 630-637 ◽  
Author(s):  
Neda Mollakhalili Meybodi ◽  
Leila Mirmoghtadaie ◽  
Zhaleh Sheidaei ◽  
Amir Mohammad Mortazavian
Keyword(s):  
Developing Countries ◽  
Amino Acid ◽  
Protein Energy Malnutrition ◽  
Daily Intake ◽  
Amino Acid Content ◽  
Wheat Bread ◽  
Published Data ◽  
Lysine Content ◽  
Protein Energy ◽  
Essential Amino Acid Content

Wheat bread is the main foodstuff and supply of dietary energy/protein in most developing countries. Wheat based diets are poor regarding essential amino acid content especially lysine as the first limiting amino acid. Since human body is unable to build lysine, it is necessary to be taken via food and/or supplements. Recommended daily intake of lysine is estimated to be around 30-64 mg/kg body weight. Inadequate intake of lysine results in a syndrome called ‘protein energy malnutrition’ which is suspected to be more prevalent in developing countries. Since lysine is provided by different sources (especially meat), there is no published data about the lack of lysine, however it is estimated to be prevalent in developing countries where the lysine-rich sources are generally expensive and low accessible there. The lysine fortification of wheat bread is conducted mainly to provide an accessible lysine-rich source. Biofortification, using lysine rich sources (either as flour or protein concentrates) and directly addition of lysine amino acid and its derivative have been investigated in different studies. The aim of this article is to review the potential strategies to improve the lysine content of wheat bread from both nutritional and technological points of view.

scholarly journals Reasons why hypoalbuminaemia may or may not appear in protein-energy malnutrition

1977 ◽  
Vol 38 (1) ◽  
pp. 115-126 ◽  
Author(s):  
W. A. Coward ◽  
R. G. Whitehead ◽  
P. G. Lunn
Keyword(s):  
Amino Acid ◽  
Dietary Restriction ◽  
Protein Energy Malnutrition ◽  
Protein Diet ◽  
Low Protein Diet ◽  
Albumin Concentration ◽  
Plasma Albumin ◽  
Low Protein ◽  
Protein Energy ◽  
Plasma Albumin Concentration

1.Investigations have been carried out in experimentally-malnourished rats in an attempt to explain the reasons for the development of the two main forms of protein-energy malnutrition in children, kwashiorkor and marasmus.2.Isoenergetic diets with values for protein: energy (P:E) of 0.21 (control diet; C) 0.032 (low-protein diet; LP) and 0.005 (very-low-protein diet; VLP) were fed to groups of twenty-six rats either ad lib. or in restricted amounts from 5 weeks of age. Rats were killed at the start of the experiment and 1, 2 and 3 or 4 weeks later. Estimations were made of plasma albumin, insulin, corticosterone and amino acid concentrations and of the total protein content of the gastrocnemius muscles and liver.3.Rats given diet LP ad lib. gained weight slowly and by week 1 plasma albumin concentration was slightly reduced. Rats given diet VLP ad lib. gradually lost weight and plasma albumin concentrations decreased continuously.4.In contrast the major effect of dietary restriction during the first 2 weeks of the experiment was to maintain plasma albumin concentrations at normal values, irrespective of the diet given.5.At later stages, however, when the ‘restricted’ animals had become very severely wasted, albumin concentrations decreased rapidly to values approaching those found in rats given diet VLP ad lib.6.When diets LP and VLP were given ad lib. body protein was proportionally distributed in favour of muscle rather than liver. For ‘restricted’ rats the reverse was true, at least up to the time when plasma albumin concentration began to decrease.7.Plasma corticosterone concentrations increased and insulin concentrations decreased when diets LP and VLP were fed in both an ad lib. and a ‘restricted’ regimen but the effects were significantly greater in the latter situation.8.Ad lib. feeding of diets LP and VLP produced a distorted plasma amino acid pattern resembling that of kwashiorkor, but although dietary restriction resulted in a decrease in total amino acid concentration, the plasma concentration ratio, non-essential amino acids:essential amino acids was virtually unaffected.9.It was concluded that whilst the lower the protein concentration in the diet the greater is the extent of hypoalbuminaemia which develops, dietary restriction with an increase in plasma glucocorticoid concentration and body-wasting can initially delay the development of the hypoalbuminaemia. However, in the final stages of wasting which ensue, low plasma albumin concentrations can appear because of a failure of the mechanisms which had earlier been able to preserve them at normal levels. It is possible that these two separate and distinct routes to hypoalbuminaemia observed in this study may have parallels in human situations in developing countries.

scholarly journals Evaluation of Protein Nutritional Quality of Four Soybean Varieties Grown in Western Kenya

2018 ◽  
Vol 7 (5) ◽  
pp. 69 ◽  
Author(s):  
Fredrick Agengo ◽  
Charlotte Serrem ◽  
Florence Wamunga
Keyword(s):  
Amino Acid ◽  
Nutritional Quality ◽  
Protein Energy Malnutrition ◽  
Protein Digestibility ◽  
Western Kenya ◽  
Protein Retention ◽  
Protein Energy ◽  
Amino Acid Score ◽  
True Protein

Protein nutrition is important for human health because its deficiency leads to major public health problems such as Protein Energy Malnutrition. Soybean an excellent and cheap source of high quality protein has been introduced into the Western Kenya and other developing countries for improved health and food security, but end use qualities may reduce its utilization. The main objective of this study was to evaluate the protein nutritional quality of four soybean varieties grown in Western Kenya. Protein quality was determined using male weanling albino rats for the indices of net protein retention, food efficiency, apparent and true protein digestibilities and faecal weight. Soybean amino acid efficiency was evaluated using Protein digestibility corrected amino acid score (PDCAAS). Soybean diet SB 132 had the highest protein nutritional quality with the best protein retention of 6.29 g, Apparent Protein digestibility of 89.13%, True Protein Digestibility of 96.48%, weight gain of 5.50 g and a Net Protein Retention Ratio of 4.70. All the four soybean varieties had high amino acid profiles with a Protein digestibility Corrected Amino Acid Score of 1.0. Soybean variety SB 132 is the most superior in digestibility and the study recommends its promotion as a food crop in Western Kenya and other developing countries for the management of Protein Energy Malnutrition and for food security.

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