Imperial College London
Alternate

DrIsabelGarcia Perez

Faculty of Medicine, Department of Metabolism, Digestion and Reproduction

Senior Lecturer in Precision and Systems Medicine
 
 
 
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Contact

 

i.garcia-perez

 
 
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Location

 

101Sir Alexander Fleming BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Byrne:2016:10.3945/ajcn.115.126706,
author = {Byrne, CS and Chambers, ES and Alhabeeb, H and Chhina, N and Morrison, DJ and Preston, T and Tedford, C and Fizpatrick, J and Irani, C and Busza, A and Garcia-Perez, I and Fountana, S and Holmes, E and Goldstone, AP and Frost, GS},
doi = {10.3945/ajcn.115.126706},
journal = {American Journal of Clinical Nutrition},
title = {Increased colonic propionate reduces anticipatory reward responses in the human striatum to high-energy foods},
url = {http://dx.doi.org/10.3945/ajcn.115.126706},
volume = {104},
year = {2016}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - BACKGROUND: Short-chain fatty acids (SCFAs), metabolites produced through the microbial fermentation of nondigestible dietary components, have key roles in energy homeostasis. Animal research suggests that colon-derived SCFAs modulate feeding behavior via central mechanisms. In humans, increased colonic production of the SCFA propionate acutely reduces energy intake. However, evidence of an effect of colonic propionate on the human brain or reward-based eating behavior is currently unavailable. OBJECTIVES: We investigated the effect of increased colonic propionate production on brain anticipatory reward responses during food picture evaluation. We hypothesized that elevated colonic propionate would reduce both reward responses and ad libitum energy intake via stimulation of anorexigenic gut hormone secretion. DESIGN: In a randomized crossover design, 20 healthy nonobese men completed a functional magnetic resonance imaging (fMRI) food picture evaluation task after consumption of control inulin or inulin-propionate ester, a unique dietary compound that selectively augments colonic propionate production. The blood oxygen level-dependent (BOLD) signal was measured in a priori brain regions involved in reward processing, including the caudate, nucleus accumbens, amygdala, anterior insula, and orbitofrontal cortex (n = 18 had analyzable fMRI data). RESULTS: Increasing colonic propionate production reduced BOLD signal during food picture evaluation in the caudate and nucleus accumbens. In the caudate, the reduction in BOLD signal was driven specifically by a lowering of the response to high-energy food. These central effects were partnered with a decrease in subjective appeal of high-energy food pictures and reduced energy intake during an ad libitum meal. These observations were not related to changes in blood peptide YY (PYY), glucagon-like peptide 1 (GLP-1), glucose, or insulin concentrations. CONCLUSION: Our results suggest that colonic propionate production may play
AU  - Byrne,CS
AU  - Chambers,ES
AU  - Alhabeeb,H
AU  - Chhina,N
AU  - Morrison,DJ
AU  - Preston,T
AU  - Tedford,C
AU  - Fizpatrick,J
AU  - Irani,C
AU  - Busza,A
AU  - Garcia-Perez,I
AU  - Fountana,S
AU  - Holmes,E
AU  - Goldstone,AP
AU  - Frost,GS
DO  - 10.3945/ajcn.115.126706
PY  - 2016///
SN  - 1938-3207
TI  - Increased colonic propionate reduces anticipatory reward responses in the human striatum to high-energy foods
T2  - American Journal of Clinical Nutrition
UR  - http://dx.doi.org/10.3945/ajcn.115.126706
UR  - http://hdl.handle.net/10044/1/34489
VL  - 104
ER  -
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