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Uptake and Utilization of Amino Acids by Splanchnic Bed

2014-08-27 03:17:17 | BioPortfolio

Summary

Splanchnic uptake and metabolism contributes significantly to the differences in flux seen between the intravenous and intragastric ingestion of certain indispensable amino acids.

This is the third in a series of studies designed to increase the investigators knowledge of the metabolism of two indispensable amino acids, threonine and lysine, by the splanchnic bed. In the initial two studies the investigators established the neonatal parenteral requirement of threonine and lysine. In the current study, the investigators will be examining the differences in uptake and metabolism of threonine and lysine across the splanchnic bed.

Description

We propose that we will see a smaller amount of enterally fed isotopes reach the plasma as compared to the amount in plasma from the parenterally delivered isotopes. We also believe that the amount of enterally delivered threonine isotope that reaches the plasma will be significantly less than the amount of enterally fed lysine isotope.

Study Design

Allocation: Randomized, Control: Uncontrolled, Endpoint Classification: Bio-availability Study, Intervention Model: Crossover Assignment, Masking: Open Label, Primary Purpose: Basic Science

Conditions

Healthy Males

Intervention

Threonine, Lysine

Location

The Hospital for Sick Children
Toronto
Ontario
Canada

Status

Recruiting

Source

The Hospital for Sick Children

Results (where available)

View Results

Links

Published on BioPortfolio: 2014-08-27T03:17:17-0400

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PubMed Articles [6575 Associated PubMed Articles listed on BioPortfolio]

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Medical and Biotech [MESH] Definitions

An enzyme that catalyzes the reduction of aspartic beta-semialdehyde to homoserine, which is the branch point in biosynthesis of methionine, lysine, threonine and leucine from aspartic acid. EC 1.1.1.3.

A pyridoxal-phosphate protein that catalyzes the deamination of THREONINE to 2-ketobutyrate and AMMONIA. The role of this enzyme can be biosynthetic or biodegradative. In the former role it supplies 2-ketobutyrate required for ISOLEUCINE biosynthesis, while in the latter it is only involved in the breakdown of threonine to supply energy. This enzyme was formerly listed as EC 4.2.1.16.

Healthy People Programs are a set of health objectives to be used by governments, communities, professional organizations, and others to help develop programs to improve health. It builds on initiatives pursued over the past two decades beginning with the 1979 Surgeon General's Report, Healthy People, Healthy People 2000: National Health Promotion and Disease Prevention Objectives, and Healthy People 2010. These established national health objectives and served as the basis for the development of state and community plans. These are administered by the Office of Disease Prevention and Health Promotion (ODPHP). Similar programs are conducted by other national governments.

An enzyme that activates lysine with its specific transfer RNA. EC 6.1.1.6.

An enzyme that activates threonine with its specific transfer RNA. EC 6.1.1.3.

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