Cited by 659Gut microbiota and healthGastrointestinal motility and disordersAnimal Nutrition and Physiology

Critical role of gut microbiota in the production of biologically active, free catecholamines in the gut lumen of mice

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Asano, Yasunari, Hiramoto, Tetsuya, Nishino, Ryo, Aiba, Yuji, Kimura, Tae, Yoshihara, Kazufumi, Koga, Yasuhiro, Sudo, Nobuyuki·2012·American Journal of Physiology-Gastrointestinal and Liver Physiology

Abstract

There is increasing interest in the bidirectional communication between the mammalian host and prokaryotic cells. Catecholamines (CA), candidate molecules for such communication, are presumed to play an important role in the gut lumen; however, available evidence is limited because of the lack of actual data about luminal CA. This study evaluated luminal CA levels in the gastrointestinal tract and elucidated the involvement of gut microbiota in the generation of luminal CA by comparing the findings among specific pathogen-free mice (SPF-M), germ-free mice (GF-M), and gnotobiotic mice. Substantial levels of free dopamine and norepinephrine were identified in the gut lumen of SPF-M. The free CA levels in the gut lumen were lower in GF-M than in SPF-M. The majority of CA was a biologically active, free form in SPF-M, whereas it was a biologically inactive, conjugated form in GF-M. The association of GF-M with either Clostridium species or SPF fecal flora, both of which have abundant β-glucuronidase activity, resulted in the drastic elevation of free CA. The inoculation of E. coli strain into GF-M induced a substantial amount of free CA, but the inoculation of its mutant strain deficient in the β-glucuronidase gene did not. The intraluminal administration of DA increased colonic water absorption in an in vivo ligated loop model of SPF-M, thus suggesting that luminal DA plays a role as a proabsorptive modulator of water transport in the colon. These results indicate that gut microbiota play a critical role in the generation of free CA in the gut lumen.

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Crossref · 10.1152/ajpgi.00341.2012

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Authors
Asano, Y., Hiramoto, T., Nishino, R., Aiba, Y., Kimura, T., Yoshihara, K., Koga, Y., & Sudo, N.
Affiliations
  • Kyushu University (JP)
  • Tokai University (JP)
Corresponding author
Sudo, Nobuyuki
Venue
American Journal of Physiology-Gastrointestinal and Liver Physiology
Published
2012-12-01
Volume
303
Issue
11
Pages
G1288-G1295
ISSN
  • 0193-1857 (ISSN-L)
  • 1522-1547
OpenAlex
W2099594801
Cited by
659
References
55
Citations by year
2026: 30 · 2025: 49 · 2024: 59 · 2023: 56 · 2022: 70 · 2021: 111 · 2020: 67 · 2019: 62 · 2018: 41 · 2017: 31 · 2016: 29 · 2015: 21 · 2014: 24 · 2013: 8 · 2012: 1
FWCI
6.94
Type
journal article
Language
en
Open access
Locations
  • American Journal of Physiology-Gastrointestinal and Liver Physiology (publishedVersion)
  • PubMed (publishedVersion)
  • Kyushu University Institutional Repository (QIR) (Kyushu University) (submittedVersion)
Funders
Japan Society for the Promotion of Science (24659350)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
  • Health Sciences › Medicine › Gastroenterology › Gastrointestinal motility and disorders
  • Life Sciences › Agricultural and Biological Sciences › Animal Science and Zoology › Animal Nutrition and Physiology
Keywords
gut microbiota, catecholamines, dopamine, norepinephrine, beta-glucuronidase, Clostridium, Escherichia coli, germ-free mice, gnotobiotic mice, colonic water absorption, host-microbe communication
MeSH terms
Animals, Catecholamines, Cecum, Clostridium, Dopamine, Escherichia coli, Feces, Female, Germ-Free Life, Glucuronidase, Intestinal Absorption, Male, Norepinephrine, Specific Pathogen-Free Organisms, Water, Gastrointestinal Tract, Mice, Metagenome

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