Astaxanthin attenuated the stress-induced intestinal motility disorder via altering the gut microbiota.

Abstract

Gut microbiota and short-chain fatty acids (SCFAs) are recognized as key factors in the pathophysiology of irritable bowel syndrome. Astaxanthin is a carotenoid with strong antioxidant and anti-inflammatory activities. In this study, we examined the effects of astaxanthin on gut microbiota-, SCFAs-, and corticotropin-releasing factor (CRH)-induced intestinal hypermotility. Male Wistar rats (n=12 per group) were fed a diet with or without 0. 02% (w/w) astaxanthin for four weeks and CRH or saline was administered intravenously. The number of fecal pellets was counted 2 h after injection. Then the rats were sacrificed, and the cecal content were collected 3 h after injection. The number of feces was significantly increased by CRH injection in the control group (2.0 vs. 6.5; p=0.028), but not in the astaxanthin group (1.0 vs. 2.2; p=0.229) (n=6 per group). The cecal microbiota in the astaxanthin group was significantly altered compared with that in the control group. The concentrations of acetic acid (81.1 μmol/g vs. 103.9 μmol/g; p=0.015) and butyric acid (13.4 μmol/g vs. 39.2 μmol/g; p<0.001) in the astaxanthin group were significantly lower than that in the control group (n=12 per group). Astaxanthin attenuates CRH-induced intestinal hypermotility and alters the composition of gut microbiota and SCFAs.

• Authors: Ritsu Yasuda, Kazuhiro Kamada, Takaaki Murakami, Ryo Inoue, Katsura Mizushima, Ryohei Hirose, Ken Inoue, Osamu Dohi, Naohisa Yoshida, Kazuhiro Katada, Kazuhiko Uchiyama, Osamu Handa, Takeshi Ishikawa, Tomohisa Takagi, Hideyuki Konishi, Yuji Naito, Yoshito Itoh
• Journal: International journal for vitamin and nutrition research. Internationale Zeitschrift fur Vitamin- und Ernahrungsforschung. Journal international de vitaminologie et de nutrition (Int J Vitam Nutr Res) Vol. 93 Issue 5 Pg. 427-437 (Oct 2023) ISSN: 0300-9831 [Print] Switzerland
• PMID: 35635517 (Publication Type: Journal Article)

Chemical References

• astaxanthine
• Fatty Acids, Volatile

Topics

• Male
• Rats
• Animals
• Gastrointestinal Microbiome (physiology)
• Rats, Wistar
• Irritable Bowel Syndrome
• Fatty Acids, Volatile (pharmacology)
• Gastrointestinal Motility