A computational model of postprandial adipose tissue lipid metabolism derived using human arteriovenous stable isotope tracer data.
Given the association of disturbances in non-esterified fatty acid (NEFA) metabolism with the development of Type 2 Diabetes and Non-Alcoholic Fatty Liver Disease, computational models of glucose-insulin dynamics have been extended to account for the interplay with NEFA. In this study, we use arteri...
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Online Access: | https://doi.org/10.1371/journal.pcbi.1007400 |
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doaj-410efcecc5b248518df708c5720dcd972021-04-21T15:07:53ZengPublic Library of Science (PLoS)PLoS Computational Biology1553-734X1553-73582019-10-011510e100740010.1371/journal.pcbi.1007400A computational model of postprandial adipose tissue lipid metabolism derived using human arteriovenous stable isotope tracer data.Shauna D O'DonovanMichael LenzRoel G VinkNadia J T RoumansTheo M C M de KokEdwin C M MarimanRalf L M PeetersNatal A W van RielMarleen A van BaakIlja C W ArtsGiven the association of disturbances in non-esterified fatty acid (NEFA) metabolism with the development of Type 2 Diabetes and Non-Alcoholic Fatty Liver Disease, computational models of glucose-insulin dynamics have been extended to account for the interplay with NEFA. In this study, we use arteriovenous measurement across the subcutaneous adipose tissue during a mixed meal challenge test to evaluate the performance and underlying assumptions of three existing models of adipose tissue metabolism and construct a new, refined model of adipose tissue metabolism. Our model introduces new terms, explicitly accounting for the conversion of glucose to glyceraldehye-3-phosphate, the postprandial influx of glycerol into the adipose tissue, and several physiologically relevant delays in insulin signalling in order to better describe the measured adipose tissues fluxes. We then applied our refined model to human adipose tissue flux data collected before and after a diet intervention as part of the Yoyo study, to quantify the effects of caloric restriction on postprandial adipose tissue metabolism. Significant increases were observed in the model parameters describing the rate of uptake and release of both glycerol and NEFA. Additionally, decreases in the model's delay in insulin signalling parameters indicates there is an improvement in adipose tissue insulin sensitivity following caloric restriction.https://doi.org/10.1371/journal.pcbi.1007400 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Shauna D O'Donovan Michael Lenz Roel G Vink Nadia J T Roumans Theo M C M de Kok Edwin C M Mariman Ralf L M Peeters Natal A W van Riel Marleen A van Baak Ilja C W Arts |
spellingShingle |
Shauna D O'Donovan Michael Lenz Roel G Vink Nadia J T Roumans Theo M C M de Kok Edwin C M Mariman Ralf L M Peeters Natal A W van Riel Marleen A van Baak Ilja C W Arts A computational model of postprandial adipose tissue lipid metabolism derived using human arteriovenous stable isotope tracer data. PLoS Computational Biology |
author_facet |
Shauna D O'Donovan Michael Lenz Roel G Vink Nadia J T Roumans Theo M C M de Kok Edwin C M Mariman Ralf L M Peeters Natal A W van Riel Marleen A van Baak Ilja C W Arts |
author_sort |
Shauna D O'Donovan |
title |
A computational model of postprandial adipose tissue lipid metabolism derived using human arteriovenous stable isotope tracer data. |
title_short |
A computational model of postprandial adipose tissue lipid metabolism derived using human arteriovenous stable isotope tracer data. |
title_full |
A computational model of postprandial adipose tissue lipid metabolism derived using human arteriovenous stable isotope tracer data. |
title_fullStr |
A computational model of postprandial adipose tissue lipid metabolism derived using human arteriovenous stable isotope tracer data. |
title_full_unstemmed |
A computational model of postprandial adipose tissue lipid metabolism derived using human arteriovenous stable isotope tracer data. |
title_sort |
computational model of postprandial adipose tissue lipid metabolism derived using human arteriovenous stable isotope tracer data. |
publisher |
Public Library of Science (PLoS) |
series |
PLoS Computational Biology |
issn |
1553-734X 1553-7358 |
publishDate |
2019-10-01 |
description |
Given the association of disturbances in non-esterified fatty acid (NEFA) metabolism with the development of Type 2 Diabetes and Non-Alcoholic Fatty Liver Disease, computational models of glucose-insulin dynamics have been extended to account for the interplay with NEFA. In this study, we use arteriovenous measurement across the subcutaneous adipose tissue during a mixed meal challenge test to evaluate the performance and underlying assumptions of three existing models of adipose tissue metabolism and construct a new, refined model of adipose tissue metabolism. Our model introduces new terms, explicitly accounting for the conversion of glucose to glyceraldehye-3-phosphate, the postprandial influx of glycerol into the adipose tissue, and several physiologically relevant delays in insulin signalling in order to better describe the measured adipose tissues fluxes. We then applied our refined model to human adipose tissue flux data collected before and after a diet intervention as part of the Yoyo study, to quantify the effects of caloric restriction on postprandial adipose tissue metabolism. Significant increases were observed in the model parameters describing the rate of uptake and release of both glycerol and NEFA. Additionally, decreases in the model's delay in insulin signalling parameters indicates there is an improvement in adipose tissue insulin sensitivity following caloric restriction. |
url |
https://doi.org/10.1371/journal.pcbi.1007400 |
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