Title :

Exposure of Caenorhabditis elegans to Dietary Nε-Carboxymethyllysine Emphasizes Endocytosis as a New Route for Intestinal Absorption of Advanced Glycation End Products

Author(s) :

Dubois, Constance [Auteur]
Facteurs de risque et déterminants moléculaires des maladies liées au vieillissement (RID-AGE) - U1167
Facteurs de risque et déterminants moléculaires des maladies liées au vieillissement (RID-AGE) - U1167
Litke, Rachel [Auteur]
Facteurs de Risque et Déterminants Moléculaires des Maladies liées au Vieillissement - U 1167 [RID-AGE]
Rianha, Stéphane [Auteur]
Facteurs de Risque et Déterminants Moléculaires des Maladies liées au Vieillissement - U 1167 [RID-AGE]
Paul-Constant, Charles [Auteur]
Institut d'Électronique, de Microélectronique et de Nanotechnologie (IEMN) - UMR 8520
Lo Guidice, Jean-Marc [Auteur]
IMPact de l'Environnement Chimique sur la Santé humaine (IMPECS) - ULR 4483
Taront, Solenne [Auteur]
Facteurs de Risque et Déterminants Moléculaires des Maladies liées au Vieillissement - U 1167 [RID-AGE]
Tessier, Frederic [Auteur]
Facteurs de Risque et Déterminants Moléculaires des Maladies liées au Vieillissement - U 1167 [RID-AGE]
Facteurs de risque et déterminants moléculaires des maladies liées au vieillissement (RID-AGE) - U1167
Boulanger, Eric [Auteur]
Facteurs de risque et déterminants moléculaires des maladies liées au vieillissement (RID-AGE) - U1167
Fradin, Chantal [Auteur]
Facteurs de risque et déterminants moléculaires des maladies liées au vieillissement (RID-AGE) - U1167

Journal title :

Nutrients

Abbreviated title :

Nutrients

Volume number :

13

Pages :

4398

Publisher :

MDPI AG

Publication date :

2021-12-08

ISSN :

2072-6643

HAL domain(s) :

Sciences du Vivant [q-bio]

English abstract : [en]

The impact of dietary advanced glycation end products (dAGEs) on human health has been discussed in many studies but, to date, no consensual pathophysiological process has been demonstrated. The intestinal absorption ...
Show more >The impact of dietary advanced glycation end products (dAGEs) on human health has been discussed in many studies but, to date, no consensual pathophysiological process has been demonstrated. The intestinal absorption pathways which have so far been described for dAGEs, the passive diffusion of free AGE adducts and transport of glycated di-tripeptides by the peptide transporter 1 (PEPT-1), are not compatible with certain pathophysiological processes described. To get new insight into the intestinal absorption pathways and the pathophysiological mechanisms of dAGEs, we initiated an in vivo study with a so-called simple animal model with a complete digestive tract, Caenorhabditis elegans. Dietary bacteria were chemically modified with glyoxylic acid to mainly produce Nε-carboxymethyllysine (CML) and used to feed the worms. We performed different immunotechniques using an anti-CML antibody for the relative quantification of ingested CML and localization of this AGE in the worms’ intestine. The relative expression of genes encoding different biological processes such as response to stresses and intestinal digestion were determined. The physiological development of the worms was verified. All the results were compared with those obtained with the control bacteria. The results revealed a new route for the intestinal absorption of dietary CML (dCML), endocytosis, which could be mediated by scavenger receptors. The exposure of worms to dCML induced a reproductive defect and a transcriptional response reflecting oxidative, carbonyl and protein folding stresses. These data, in particular the demonstration of endocytosis of dCML by enterocytes, open up new perspectives to better characterize the pathophysiological mechanisms of dAGEs.Show less >

Language :

Anglais

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

Université de Lille
CHU Lille
Institut Pasteur de Lille

Collections :

• IMPact de l'Environnement Chimique sur la Santé humaine (IMPECS) - ULR 4483

Submission date :

2022-04-13T09:35:09Z
2022-04-27T07:57:57Z