Reference - Detail
| RRC ID | 75227 |
|---|---|
| Author | Tatsuoka M, Osaki Y, Ohsaka F, Tsuruta T, Kadota Y, Tochio T, Hino S, Morita T, Sonoyama K. |
| Title | Consumption of indigestible saccharides and administration of Bifidobacterium pseudolongum reduce mucosal serotonin in murine colonic mucosa. |
| Journal | Br J Nutr |
| Abstract |
SCFA increase serotonin (5-hydroxytryptamine, 5-HT) synthesis and content in the colon in vitro and ex vivo, but little is known in vivo. We tested whether dietary indigestible saccharides, utilised as a substrate to produce SCFA by gut microbiota, would increase colonic 5-HT content in mice. Male C57BL/6J mice were fed a purified diet and water supplemented with 4 % (w/v) 1-kestose (KES) for 2 weeks. Colonic 5-HT content and enterochromaffin (EC) cell numbers were lower in mice supplemented with KES than those without supplementation, while monoamine oxidase A activity and mRNA levels of tryptophan hydroxylase 1 (Tph1), chromogranin A (Chga), Slc6a4 and monoamine oxidase A (Maoa) genes in the colonic mucosa, serum 5-HT concentration and total 5-HT content in the colonic contents did not differ between groups. Caecal acetate concentration and Bifidobacterium pseudolongum population were higher in KES-supplemented mice. Similar trends were observed in mice supplemented with other indigestible saccharides, that is, fructo-oligosaccharides, inulin and raffinose. Intragastric administration of live B. pseudolongum (108 colony-forming units/d) for 2 weeks reduced colonic 5-HT content and EC cell numbers. These results suggest that changes in synthesis, reuptake, catabolism and overflow of 5-HT in the colonic mucosa are not involved in the reduction of colonic 5-HT content by dietary indigestible saccharides in mice. We propose that gut microbes including B. pseudolongum could contribute to the reduction of 5-HT content in the colonic mucosa via diminishing EC cells. |
| Volume | 127(4) |
| Pages | 513-525 |
| Published | 2022-2-28 |
| DOI | 10.1017/S0007114521001306 |
| PII | S0007114521001306 |
| PMID | 33849681 |
| MeSH | Animals Bifidobacterium Colon* / metabolism Intestinal Mucosa / metabolism Male Mice Mice, Inbred C57BL Monoamine Oxidase / metabolism Serotonin* / metabolism |
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| The most frequently cited source | X(Twitter) |
| Total number of mentions | 2 |
| Altmetric score changes over past 6months | 0.0 |
| Resource | |
| General Microbes | JCM 1395 JCM 1190 JCM 1264 |