Gut carbohydrate inhibits GIP secretion via a microbiota/SCFA/FFAR3 pathway. 2018

Eun-Young Lee, and Xilin Zhang, and Junki Miyamoto, and Ikuo Kimura, and Tomoaki Taknaka, and Kenichi Furusawa, and Takahito Jomori, and Kosuke Fujimoto, and Satoshi Uematsu, and Takashi Miki
Department of Medical Physiology, Chiba University, Graduate School of Medicine, Chiba, Japan.

Mechanisms of carbohydrate-induced secretion of the two incretins namely glucagon-like peptide 1 (GLP-1) and glucose-dependent insulinotropic polypeptide (GIP) are considered to be mostly similar. However, we found that mice exhibit opposite secretory responses in response to co-administration of maltose plus an α-glucosidase inhibitor miglitol (maltose/miglitol), stimulatory for GLP-1, as reported previously, but inhibitory for GIP. Gut microbiota was shown to be involved in maltose/miglitol-induced GIP suppression, as the suppression was attenuated in antibiotics (Abs)-treated mice and abolished in germ-free mice. In addition, maltose/miglitol administration increased plasma levels of short-chain fatty acids (SCFAs), carbohydrate-derived metabolites, in the portal vein. GIP suppression by maltose/miglitol was not observed in mice lacking a SCFA receptor Ffar3, but it was normally seen in Ffar2-deficient mice. Similar to maltose/miglitol administration, co-administration of glucose plus a sodium glucose transporter inhibitor phloridzin (glucose/phloridzin) induced GIP suppression, which was again cancelled by Abs treatment. In conclusion, oral administration of carbohydrates with α-glucosidase inhibitors suppresses GIP secretion through a microbiota/SCFA/FFAR3 pathway.

UI MeSH Term Description Entries
D008320 Maltose A dextrodisaccharide from malt and starch. It is used as a sweetening agent and fermentable intermediate in brewing. (Grant & Hackh's Chemical Dictionary, 5th ed)
D005232 Fatty Acids, Volatile Short-chain fatty acids of up to six carbon atoms in length. They are the major end products of microbial fermentation in the ruminant digestive tract and have also been implicated in the causation of neurological diseases in humans. Fatty Acids, Short-Chain,Short-Chain Fatty Acid,Volatile Fatty Acid,Acid, Short-Chain Fatty,Acid, Volatile Fatty,Fatty Acid, Short-Chain,Fatty Acid, Volatile,Fatty Acids, Short Chain,Short Chain Fatty Acid,Short-Chain Fatty Acids,Volatile Fatty Acids
D005749 Gastric Inhibitory Polypeptide A gastrointestinal peptide hormone of about 43-amino acids. It is found to be a potent stimulator of INSULIN secretion and a relatively poor inhibitor of GASTRIC ACID secretion. Glucose-Dependent Insulinotropic Peptide,Gastric-Inhibitory Polypeptide,Glucose Dependent Insulinotropic Peptide,Glucose-Dependent Insulin-Releasing Peptide,Glucose Dependent Insulin Releasing Peptide,Inhibitory Polypeptide, Gastric,Insulin-Releasing Peptide, Glucose-Dependent,Insulinotropic Peptide, Glucose-Dependent,Peptide, Glucose-Dependent Insulin-Releasing,Peptide, Glucose-Dependent Insulinotropic,Polypeptide, Gastric Inhibitory,Polypeptide, Gastric-Inhibitory
D000069196 Gastrointestinal Microbiome All of the microbial organisms that naturally exist within the GASTROINTESTINAL TRACT. Enteric Bacteria,Gastric Microbiome,Gastrointestinal Flora,Gastrointestinal Microbial Community,Gastrointestinal Microbiota,Gastrointestinal Microflora,Gut Flora,Gut Microbiome,Gut Microbiota,Gut Microflora,Intestinal Flora,Intestinal Microbiome,Intestinal Microbiota,Intestinal Microflora,Bacteria, Enteric,Flora, Gastrointestinal,Flora, Gut,Flora, Intestinal,Gastric Microbiomes,Gastrointestinal Microbial Communities,Gastrointestinal Microbiomes,Gastrointestinal Microbiotas,Gut Microbiomes,Gut Microbiotas,Intestinal Microbiomes,Intestinal Microbiotas,Microbial Community, Gastrointestinal,Microbiome, Gastric,Microbiome, Gastrointestinal,Microbiome, Gut,Microbiome, Intestinal,Microbiota, Gastrointestinal,Microbiota, Gut,Microbiota, Intestinal,Microflora, Gastrointestinal,Microflora, Gut,Microflora, Intestinal
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D017485 1-Deoxynojirimycin An alpha-glucosidase inhibitor with antiviral action. Derivatives of deoxynojirimycin may have anti-HIV activity. 1,5-Deoxy-1,5-imino-D-mannitol,1-Deoxymannojirimycin,1,5-Dideoxy-1,5-imino-D-mannitol,1-Deoxynojirimycin Hydrochloride,Bay n 5595,Moranoline,1 Deoxymannojirimycin,1 Deoxynojirimycin,1 Deoxynojirimycin Hydrochloride
D043562 Receptors, G-Protein-Coupled The largest family of cell surface receptors involved in SIGNAL TRANSDUCTION. They share a common structure and signal through HETEROTRIMERIC G-PROTEINS. G Protein Coupled Receptor,G-Protein-Coupled Receptor,G-Protein-Coupled Receptors,G Protein Coupled Receptors,Receptor, G-Protein-Coupled,Receptors, G Protein Coupled
D050260 Carbohydrate Metabolism Cellular processes in biosynthesis (anabolism) and degradation (catabolism) of CARBOHYDRATES. Metabolism, Carbohydrate
D051379 Mice The common name for the genus Mus. Mice, House,Mus,Mus musculus,Mice, Laboratory,Mouse,Mouse, House,Mouse, Laboratory,Mouse, Swiss,Mus domesticus,Mus musculus domesticus,Swiss Mice,House Mice,House Mouse,Laboratory Mice,Laboratory Mouse,Mice, Swiss,Swiss Mouse,domesticus, Mus musculus
D052216 Glucagon-Like Peptide 1 A peptide of 36 or 37 amino acids that is derived from PROGLUCAGON and mainly produced by the INTESTINAL L CELLS. GLP-1(1-37 or 1-36) is further N-terminally truncated resulting in GLP-1(7-37) or GLP-1-(7-36) which can be amidated. These GLP-1 peptides are known to enhance glucose-dependent INSULIN release, suppress GLUCAGON release and gastric emptying, lower BLOOD GLUCOSE, and reduce food intake. GLP-1,Glucagon-Like Peptide-1,GLP 1,Glucagon Like Peptide 1

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