Synthesis of Structurally Identical Fluorine-18 and Iodine Isotope Labeling Compounds for Comparative Imaging

2003 ◽  
Vol 14 (2) ◽  
pp. 287-294 ◽  
Author(s):  
Zizhong Li ◽  
Yu-Shin Ding ◽  
Andrew Gifford ◽  
Joanna S. Fowler ◽  
John S. Gatley
Keyword(s):  
Isotope Labeling ◽  
Iodine Isotope

Electron probe x-ray microanalysis and electron microscopy of amino acid absorption and transport by the small intestine: inhibition by chemical poisons and correlation to the elemental composition of the epithelial cells

1986 ◽  
Vol 44 ◽  
pp. 134-135
Author(s):  
A. J. Tousimis
Keyword(s):  
Small Intestine ◽  
Amino Acid ◽  
Epithelial Cells ◽  
Elemental Composition ◽  
Isotope Labeling ◽  
Structural Components ◽  
X Ray ◽  
Human Small Intestine ◽  
Transport Studies

The elemental composition of amino acids is similar to that of the major structural components of the epithelial cells of the small intestine and other tissues. Therefore, their subcellular localization and concentration measurements are not possible by x-ray microanalysis. Radioactive isotope labeling: I131-tyrosine, Se75-methionine and S35-methionine have been successfully employed in numerous absorption and transport studies. The latter two have been utilized both in vitro and vivo, with similar results in the hamster and human small intestine. Non-radioactive Selenomethionine, since its absorption/transport behavior is assumed to be the same as that of Se75- methionine and S75-methionine could serve as a compound tracer for this amino acid.

scholarly journals A dual-isotope-labeling method of studying the bioavailability of hexaglutamyl folic acid relative to that of monoglutamyl folic acid in humans by using multiple orally administered low doses

2006 ◽  
Vol 84 (5) ◽  
pp. 1128-1133 ◽  
Author(s):  
Alida Melse-Boonstra ◽  
Petra Verhoef ◽  
Clive E West ◽  
Johannes A van Rhijn ◽  
Richard B van Breemen ◽  
...  
Keyword(s):  
Folic Acid ◽  
Isotope Labeling ◽  
Low Doses ◽  
Dual Isotope ◽  
Labeling Method

scholarly journals Cover Feature: A Nickel(II)‐Mediated Thiocarbonylation Strategy for Carbon Isotope Labeling of Aliphatic Carboxamides (Chem. Eur. J. 24/2021)

2021 ◽  
Vol 27 (24) ◽  
pp. 6998-6998
Author(s):  
Simon S. Pedersen ◽  
Aske S. Donslund ◽  
Jesper H. Mikkelsen ◽  
Oskar S. Bakholm ◽  
Florian Papp ◽  
...  
Keyword(s):  
Carbon Isotope ◽  
Isotope Labeling ◽  
J 24

scholarly journals Tracing the fate of phosphorus fertilizer derived cadmium in soil-fertilizer-wheat systems using enriched stable isotope labeling

2021 ◽  
pp. 117314
Author(s):  
Christoph Bracher ◽  
Emmanuel Frossard ◽  
Moritz Bigalke ◽  
Martin Imseng ◽  
Jochen Mayer ◽  
...  
Keyword(s):  
Stable Isotope ◽  
Isotope Labeling ◽  
Stable Isotope Labeling ◽  
Phosphorus Fertilizer ◽  
Soil Fertilizer

scholarly journals Needles in a haystack: H-bonding in an optogenetic protein observed with isotope labeling and 2D-IR spectroscopy

2021 ◽  
Author(s):  
Jeannette Ruf ◽  
Peter Hamm ◽  
David Buhrke
Keyword(s):  
Ir Spectroscopy ◽  
Isotope Labeling ◽  
Vibrational Modes ◽  
2D Ir

Two vibrational modes in a cyanobacterial protein were isolated with isotope labeling and studied with 2D-IR spectroscopy.

A Nickel(II)‐Mediated Thiocarbonylation Strategy for Carbon Isotope Labeling of Aliphatic Carboxamides

2021 ◽  
Author(s):  
Simon S. Pedersen ◽  
Aske S. Donslund ◽  
Jesper H. Mikkelsen ◽  
Oskar S. Bakholm ◽  
Florian Papp ◽  
...  
Keyword(s):  
Carbon Isotope ◽  
Isotope Labeling
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