Advertisement

Topics

Hydrolyzed Casein and Whey Protein Supplementation and the Addition of Leucine to Induce Protein Anabolism in Malnourished COPD Patients

2014-08-27 03:12:31 | BioPortfolio

Summary

The aim of this study is the first aim of a NIH project that consists of 3 aims. The first aim examines the acute effects of two high-quality milk proteins (casein vs. whey) on whole-body and muscle protein metabolism in COPD patients with severe loss of muscle mass and the effects of adding leucine. The principal endpoints will be the extent of stimulation of net whole body protein synthesis as this is the principal mechanism by which either amino acid or protein intake causes muscle anabolism. After determining the optimal nutritional formulation based on the first aim we will continue to work on the second and third aim where fish oil supplementation will be part of the nutritional intervention as well.

Description

Cachectic COPD patients are characterized by a decreased muscle protein synthesis and an elevated myofibrillar protein breakdown. A substantial number of these patients, characterized by an enhanced systemic inflammatory response, fails to respond to nutritional therapy, which is of clinical relevance as weight gain to nutritional therapy is a significant, independent predictor of mortality in COPD.

In the present study, the acute protein anabolic effect of two high-quality milk protein supplements in COPD will be examined by comparing a hydrolyzed casein and whey protein meal. We make use of hydrolyzed proteins to correct for absorption differences. Furthermore the effects of these milk proteins with or without enrichment of leucine will be investigated.

Variables of interest are: net whole body protein synthesis; whole body protein synthesis and breakdown rate; whole body myofibrillar protein breakdown rate; whole body collagen breakdown; kinetics of insulin; glucose; amino acid levels.

It is the investigators hypothesis that a nutritional supplement containing casein protein and high levels of leucine will target the metabolic alterations of these cachectic COPD patients and will specifically stimulate protein anabolism. The knowledge gained from this study will benefit our insight in terms of promotion of protein anabolism in COPD patients. The long-term goal is to reformulate nutritional composition in accord with the effects of COPD on protein metabolism in order to ameliorate or even prevent progressive muscle wasting in these subjects, and improve their quality of life and survival rates.

Study Design

Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Crossover Assignment, Masking: Double Blind (Subject, Investigator)

Conditions

Chronic Obstructive Pulmonary Disease

Intervention

Casein protein hydrolysates, Whey protein hydrolysates, Casein protein hydrolysates + LEU, Whey protein hydrolysates + LEU

Location

University of Arkansas for Medical Sciences
Little Rock
Arkansas
United States
72205

Status

Completed

Source

Texas A&M University

Results (where available)

View Results

Links

Published on BioPortfolio: 2014-08-27T03:12:31-0400

Clinical Trials [2954 Associated Clinical Trials listed on BioPortfolio]

Meat and Whey Protein Supplementation in Athletes

The aim of this project is to investigate the potential benefits of combining a new protein meat hydrolysates extract with a regular resistance training programme on (a) body composition (...

Postprandial Blood Amino Acid Response

This study was designed to obtain information about the change in postprandial amino acids in blood over time, after consumption of different dairy products with varying proportions of whe...

Whey vs Casein to Combat Post-inflammatory Protein and Muscle Waste in Acute Disease

This study compares three different protein supplements (casein, whey and leucine-enriched whey) and their effect on post-inflammatory muscle waste in a model of acute disease. Each test p...

Beef Protein Supplementation in Endurance Athletes

The aim of this project is to investigate the potential benefits of combining a new protein beef hydrolysates extract with a regular endurance training programme on (a) body composition (b...

Influence of Protein Hydrolysis on Dietary Protein Digestibility and Metabolism in Healthy Subjects

Hydrolysis of dietary protein may impact their gastrointestinal kinetics and further metabolism. The primary goal of this work was to measure the metabolic fate of intact or hydrolyzed pro...

PubMed Articles [16676 Associated PubMed Articles listed on BioPortfolio]

Antiulcerative and Antinociceptive Activities of Casein and Whey Proteins.

The aim of this study was to evaluate the antiulcerative and antinociceptive activities of milk proteins using the induced gastric ulcer with ethanol rat model and the acetic acid-induced writhing mou...

Antiulcerative Activity of Milk Proteins Hydrolysates.

Several studies have shown the protective effect of dairy products, especially α-lactalbumin and derived hydrolysates, against induced gastric ulcerative lesions. The mucus strengthening represents a...

Microbial proteases: Production and application in obtaining protein hydrolysates.

The catalytic properties of the proteases have already allowed for their introduction into several industrial processes, such as food, chemical, pharmaceutical, etc. Recent advances in the biotechnolo...

Intake of Protein Hydrolysates and Phenolic Fractions Isolated from Flaxseed Ameliorates TNBS-Induced Colitis.

In an attempt to develop new therapeutic treatments for colitis, we evaluated the effects of phenolic compounds and protein hydrolysates fractions of flaxseed on the in vitro production of pro-inflamm...

A newly effective milk-clotting enzyme from Bacillus subtilis and its application in cheese-making.

A new effective milk-clotting enzyme (BY-1) was produced from Bacillus subtilis PNG27. The analysis of MALDI-TOF-MS/MS showed that it belongs to the peptidase M4 family, and had 521 amino acids. It ha...

Medical and Biotech [MESH] Definitions

A casein kinase that was originally described as a monomeric enzyme with a molecular weight of 30-40 kD. Several ISOENZYMES of casein kinase I have been found which are encoded by separate genes. Many of the casein kinase I isoenzymes have been shown to play distinctive roles in intracellular SIGNAL TRANSDUCTION.

A casein kinase I isoenzyme that plays a role in intracellular signaling pathways including the CELL CYCLE, membrane trafficking, and RNA processing. In DROSOPHILA casein kinase Ialpha has been in regulation of Hedghog and Wingless signaling pathways. Multiple isoforms of casein kinase Ialpha exist and are due ALTERNATIVE SPLICING.

A ubiquitous casein kinase that is comprised of two distinct catalytic subunits and dimeric regulatory subunit. Casein kinase II has been shown to phosphorylate a large number of substrates, many of which are proteins involved in the regulation of gene expression.

A scaffolding protein that is a critical component of the axin signaling complex which binds to ADENOMATOUS POLYPOSIS COLI PROTEIN; GLYCOGEN SYNTHASE KINASE 3; and CASEIN KINASE I.

More From BioPortfolio on "Hydrolyzed Casein and Whey Protein Supplementation and the Addition of Leucine to Induce Protein Anabolism in Malnourished COPD Patients"

Advertisement
Quick Search
Advertisement
Advertisement

 

Relevant Topics

Rheumatology
Arthritis Fibromyalgia Gout Lupus Rheumatic Rheumatology is the medical specialty concerned with the diagnosis and management of disease involving joints, tendons, muscles, ligaments and associated structures (Oxford Medical Diction...

Nutrition
Within medicine, nutrition (the study of food and the effect of its components on the body) has many different roles. Appropriate nutrition can help prevent certain diseases, or treat others. In critically ill patients, artificial feeding by tubes need t...

Pulmonary
Pulmonary relating to or associated with the lungs eg Asthma, chronic bronchitis, emphysema, COPD, Cystic Fibrosis, Influenza,  Lung Cancer, Pneumonia, Pulmonary Arterial Hypertension, Sleep Disorders etc Follow and track Lung Cancer News ...


Searches Linking to this Trial