Effects of hyperbaric conditions on fecal microbiota

Morihiko OYA; Yutaka TADANO; Yasuhiro TAKIHATA; Wakana MURAKAMI; Shigenori FUJII; Kenji TAMAI; Yuji MORIMOTO; Fumitaka IKOMI; Tetsuji TOKUNAGA

doi:10.12938/bmfh.18-016

Note

Effects of hyperbaric conditions on fecal microbiota

Morihiko OYA, Yutaka TADANO, Yasuhiro TAKIHATA, Wakana MURAKAMI, Shigenori FUJII, Kenji TAMAI, Yuji MORIMOTO, Fumitaka IKOMI, Tetsuji TOKUNAGA

Author information

Morihiko OYA
Research Division, Experimental Department, Maritime Self-Defense Force Undersea Medical Center, Taura Minatocho, Yokosuka, Kanagawa 237-0071, Japan
Yutaka TADANO
Research Division, Experimental Department, Maritime Self-Defense Force Undersea Medical Center, Taura Minatocho, Yokosuka, Kanagawa 237-0071, Japan
Yasuhiro TAKIHATA
Research Division, Experimental Department, Maritime Self-Defense Force Undersea Medical Center, Taura Minatocho, Yokosuka, Kanagawa 237-0071, Japan
Wakana MURAKAMI
Research Division, Experimental Department, Maritime Self-Defense Force Undersea Medical Center, Taura Minatocho, Yokosuka, Kanagawa 237-0071, Japan
Shigenori FUJII
Medical Material Division, Japan Self-Defense Force Yokosuka Hospital, Yokosuka, Japan
Kenji TAMAI
Research Division, Experimental Department, Maritime Self-Defense Force Undersea Medical Center, Taura Minatocho, Yokosuka, Kanagawa 237-0071, Japan
Yuji MORIMOTO
Department of Integrative Physiology and Bio-Nano Medicine, National Defense Medical College, Tokorozawa, Japan
Fumitaka IKOMI
National Defense Medical College Research Institute, Tokorozawa, Japan
Tetsuji TOKUNAGA
Research Division, Experimental Department, Maritime Self-Defense Force Undersea Medical Center, Taura Minatocho, Yokosuka, Kanagawa 237-0071, Japan

Keywords: alteration, fecal microbiota, Clostridium cluster, Bacteroides, T-RFLP analysis

JOURNAL FREE ACCESS

2019 Volume 38 Issue 1 Pages 35-39

DOI https://doi.org/10.12938/bmfh.18-016

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Abstract

We aimed to determine whether the composition of the fecal microbiota changes under hyperbaric conditions. In this study, we collected fecal samples from 6 healthy divers at three points during deep diving training (before, 2.1 MPa, end). The frequency of Clostridium cluster XVIII tended to be increased after compression. The frequencies of Clostridium cluster IV and subcluster XIVa were inversely correlated with that of Bacteroides. The compositional changes in the fecal microbiota exhibited interindividual variability. These findings suggest that hyperbaric conditions affect the fecal microbiota.

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