Quantitation of plasma 13C-galactose and 13C-glucose during exercise by liquid chromatography/isotope ratio mass spectrometry.
Quantitation of plasma 13C-galactose and 13C-glucose during exercise by liquid chromatography/isotope ratio mass spectrometry.
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通过液相色谱/同位素比质谱法对运动期间血浆 13C-半乳糖和 13C-葡萄糖进行定量。
DOI:
10.1002/rcm.5139
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发表时间:
2011
期刊:
影响因子:
--
通讯作者:
Morrison DJ
中科院分区:
文献类型:
--
作者:
Morrison DJ
The utilisation of carbohydrate sources under exercise conditions is of considerable importance in performance sports. Incorporation of optimal profiles of macronutrients can improve endurance performance in athletes. However, gaining an understanding of the metabolic partitioning under sustained exercise can be problematical and isotope labelling approaches can help quantify substrate utilisation. The utilisation of oral galactose was investigated using13C‐galactose and measurement of plasma galactose and glucose enrichment by liquid chromatography/isotope ratio mass spectrometry (LC/IRMS). As little as 100 μL plasma could readily be analysed with only minimal sample processing. Fucose was used as a chemical and isotopic internal standard for the quantitation of plasma galactose and glucose concentrations, and isotopic enrichment. The close elution of galactose and glucose required a correction routine to be implemented to allow the measurement, and correction, of plasma glucose δ13C, even in the presence of very highly enriched galactose. A Bland‐Altman plot of glucose concentration measured by LC/IRMS against glucose measured by an enzymatic method showed good agreement between the methods. Data from seven trained cyclists, undergoing galactose supplementation before exercise, demonstrate that galactose is converted into glucose and is available for subsequent energy metabolism. Copyright © 2011 John Wiley & Sons, Ltd.
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影响因子:
2.9
作者:
Colin Smith;B. Fuller;K. Choy;M. Richards
通讯作者:
M. Richards
DOI:
10.1002/rcm.4572
发表时间:
2010
期刊:
RCM
影响因子:
--
作者:
Morrison DJ
通讯作者:
Morrison DJ
影响因子:
2
作者:
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J. V. van Goudoever
影响因子:
2
作者:
McCullagh, James;Gaye-Siessegger, Julia;Focken, Ulfert
通讯作者:
Focken, Ulfert
影响因子:
2.3
作者:
J. Godin;D. Breuillé;C. Obled;I. Papet;H. Schierbeek;G. Hopfgartner;L. Fay
通讯作者:
L. Fay