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It is imperative to understand how chemical preservation alters tissue isotopic compositions before using historical samples in ecological studies. Specifically, although compound-specific isotope analysis of amino acids (CSIA-AA) is becoming a widely-used tool, there is little information on how preservation techniques affect amino acid δ N values.
This article was published in the following journal.
Name: Rapid communications in mass spectrometry : RCM
Quantification of the bacterial, fungal, and plant energy channels to the nutrition of detritivores is methodologically challenging. This is especially true for earthworms that ingest large amounts of...
The nanoSIMS-based chemical microscopy has been introduced in biology over a decade ago. The spatial distribution of elements and isotopes analyzed by nanoSIMS can be used to reconstruct images of bio...
Trophic positions (TPs) are key parameters for determining trophic magnification factors (TMFs) of environmental pollutants. We used compound-specific nitrogen isotope analysis of amino acids (CSIA-AA...
The distribution and protonation states of amino acids in water droplets is of considerable concern in studies on the formation of clouds in the atmosphere as well as in many biological contexts. In t...
Amino acid oxidases are an important class of enzymes that mostly participate in the oxidation of amino acids using FAD as a cofactor. Many of them function in the catabolism of amino acids with wider...
In crossover trials, ten (N=10) young men (18-35 y) will receive stable isotope tracer infusions and perform a single bout of resistance exercise. Immediately after resistance exercise, pa...
In a crossover design 10 young healthy adults (20-35 y) will receive stable isotope tracer infusions and perform a single bout of resistance exercise. Immediately after exercise participan...
This is a safety and tolerability study investigating the effect of an amino acid formulation in healthy volunteers during and after limb immobilization.
In a recent randomized, double-blind, cross-over clinical trial, serum growth hormone (hGH) increased 682% above baseline 120 minutes after oral administration of an amino acid-based dieta...
The purpose of the study is to understand how the body uses amino acids in burned patients during the time they cannot eat normally. Amino acids occur naturally in the body and the food we...
Hydrogen. The first chemical element in the periodic table. It has the atomic symbol H, atomic number 1, and atomic weight 1. It exists, under normal conditions, as a colorless, odorless, tasteless, diatomic gas. Hydrogen ions are PROTONS. Besides the common H1 isotope, hydrogen exists as the stable isotope DEUTERIUM and the unstable, radioactive isotope TRITIUM.
Techniques for labeling a substance with a stable or radioactive isotope. It is not used for articles involving labeled substances unless the methods of labeling are substantively discussed. Tracers that may be labeled include chemical substances, cells, or microorganisms.
Drugs used for their actions on any aspect of excitatory amino acid neurotransmitter systems. Included are drugs that act on excitatory amino acid receptors, affect the life cycle of excitatory amino acid transmitters, or affect the survival of neurons using excitatory amino acids.
(2S-(2 alpha,3 beta,4 beta))-2-Carboxy-4-(1-methylethenyl)-3-pyrrolidineacetic acid. Ascaricide obtained from the red alga Digenea simplex. It is a potent excitatory amino acid agonist at some types of excitatory amino acid receptors and has been used to discriminate among receptor types. Like many excitatory amino acid agonists it can cause neurotoxicity and has been used experimentally for that purpose.
Cell surface proteins that bind GROWTH HORMONE with high affinity and trigger intracellular changes influencing the behavior of cells. Activation of growth hormone receptors regulates amino acid transport through cell membranes, RNA translation to protein, DNA transcription, and protein and amino acid catabolism in many cell types. Many of these effects are mediated indirectly through stimulation of the release of somatomedins.