1H NMR Determination of lactate13C-enrichment in skeletal muscle: Using a double quantum filter for the simultaneous editing of13C-coupled and13C-uncoupled methyl protons resonance

1995 ◽  
Vol 34 (3) ◽  
pp. 353-358 ◽  
Author(s):  
Gilles Bloch ◽  
Laurence Jouvensal ◽  
Pierre G. Carlier
Keyword(s):  
Skeletal Muscle ◽  
1H Nmr ◽  
Double Quantum

1H-NMR investigations. Application of trichloroacetyl isocyanate to structure determination of 3-, 6-, 7-, 7a- and 17-hydroxy steroids

1978 ◽  
Vol 43 (10) ◽  
pp. 2609-2618 ◽  
Author(s):  
Bruno Schönecker ◽  
Dieter Tresselt ◽  
Gerd Schubert ◽  
Ladislav Kohout ◽  
Jan Fajkoš
Keyword(s):  
1H Nmr ◽  
Structure Determination ◽  
Trichloroacetyl Isocyanate

Optimal routine conditions for the determination of the degree of acetylation of chitosan by 1H-NMR

2005 ◽  
Vol 61 (2) ◽  
pp. 155-161 ◽  
Author(s):  
Eduardo Fernandez-Megia ◽  
Ramón Novoa-Carballal ◽  
Emilio Quiñoá ◽  
Ricardo Riguera
Keyword(s):  
1H Nmr ◽  
Degree Of Acetylation

ChemInform Abstract: A 1H NMR Method for the Determination of Enantiomeric Excess and Absolute Configuration of cis-Dihydrodiol Metabolites of Polycyclic Arenes and Heteroarenes.

ChemInform ◽  
2010 ◽  
Vol 23 (40) ◽  
pp. no-no
Author(s):  
D. R. BOYD ◽  
N. D. SHARMA ◽  
R. BOYLE ◽  
R. A. S. MCMORDIE ◽  
J. CHIMA ◽  
...  
Keyword(s):  
1H Nmr ◽  
Absolute Configuration ◽  
Enantiomeric Excess ◽  
Nmr Method

Antecubital Vein Cannula Position Impacts Assessment of Forearm Glucose Uptake During an Oral Glucose Challenge in Healthy Volunteers

2020 ◽  
Author(s):  
Cécile Bétry ◽  
Aline V. Nixon ◽  
Paul L. Greenhaff ◽  
Elizabeth J. Simpson
Keyword(s):  
Skeletal Muscle ◽  
Blood Glucose ◽  
Glucose Uptake ◽  
Venous Blood ◽  
Whole Body ◽  
Oral Glucose ◽  
Antecubital Vein ◽  
Glucose Challenge ◽  
The Impact

Abstract Introduction Skeletal muscle is a major site for whole-body glucose disposal, and determination of skeletal muscle glucose uptake is an important metabolic measurement, particularly in research focussed on interventions that impact muscle insulin sensitivity. Calculating arterial-venous difference in blood glucose can be used as an indirect measure for assessing glucose uptake. However, the possibility of multiple tissues contributing to the composition of venous blood, and the differential in glucose uptake kinetics between tissue types, suggests that sampling from different vein sites could influence the estimation of glucose uptake. This study aimed to determine the impact of venous cannula position on calculated forearm glucose uptake following an oral glucose challenge in resting and post-exercise states. Materials and Methods In 9 young, lean, males, the impact of sampling blood from two antecubital vein positions; the perforating vein (‘perforating’ visit) and, at the bifurcation of superficial and perforating veins (‘bifurcation’ visit), was assessed. Brachial artery blood flow and arterialised-venous and venous blood glucose concentrations were measured in 3 physiological states; resting-fasted, resting-fed, and fed following intermittent forearm muscle contraction (fed-exercise). Results Following glucose ingestion, forearm glucose uptake area under the curve was greater for the ‘perforating’ than for the ‘bifurcation’ visit in the resting-fed (5.92±1.56 vs. 3.69±1.35 mmol/60 min, P<0.01) and fed-exercise (17.38±7.73 vs. 11.40±7.31 mmol/75 min, P<0.05) states. Discussion Antecubital vein cannula position impacts calculated postprandial forearm glucose uptake. These findings have implications for longitudinal intervention studies where serial determination of forearm glucose uptake is required.

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