Gut Dysbiosis in Patients with Anorexia Nervosa

Chihiro Morita, Hirokazu Tsuji, Tomokazu Hata, Motoharu Gondo, Shu Takakura, Keisuke Kawai, Kazufumi Yoshihara, Kiyohito Ogata, Koji Nomoto, Kouji Miyazaki, Nobuyuki Sudo

Research output: Contribution to journalArticle

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Abstract

Anorexia nervosa (AN) is a psychological illness with devastating physical consequences; however, its pathophysiological mechanism remains unclear. Because numerous reports have indicated the importance of gut microbiota in the regulation of weight gain, it is reasonable to speculate that AN patients might have a microbial imbalance, i.e. dysbiosis, in their gut. In this study, we compared the fecal microbiota of female patients with AN (n = 25), including restrictive (ANR, n = 14) and binge-eating (ANBP, n = 11) subtypes, with those of age-matched healthy female controls (n = 21) using the Yakult Intestinal Flora-SCAN based on 16S or 23S rRNA-targeted RT-quantitative PCR technology. AN patients had significantly lower amounts of total bacteria and obligate anaerobes including those from the Clostridium coccoides group, Clostridium leptum subgroup, and Bacteroides fragilis group than the age-matched healthy women. Lower numbers of Streptococcus were also found in the AN group than in the control group. In the analysis based on AN subtypes, the counts of the Bacteroides fragilis group in the ANR and ANBP groups and the counts of the Clostridium coccoides group in the ANR group were significantly lower than those in the control group. The detection rate of the Lactobacillus plantarum subgroup was significantly lower in the AN group than in the control group. The AN group had significantly lower acetic and propionic acid concentrations in the feces than the control group. Moreover, the subtype analysis showed that the fecal concentrations of acetic acid were lower in the ANR group than in the control group. Principal component analysis confirmed a clear difference in the bacterial components between the AN patients and healthy women. Collectively, these results clearly indicate the existence of dysbiosis in the gut of AN patients.

Original languageEnglish
Article numbere0145274
JournalPloS one
Volume10
Issue number12
DOIs
Publication statusPublished - Dec 1 2015

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Dysbiosis
anorexia nervosa
Anorexia Nervosa
digestive system
Clostridium
Clostridium coccoides
Acetic Acid
Control Groups
Bacteroides fragilis
intestinal microorganisms
Clostridium leptum
Principal component analysis
Bacteria
Lactobacillus plantarum
binging
Bulimia
anaerobes
Microbiota
Streptococcus
propionic acid

All Science Journal Classification (ASJC) codes

  • Biochemistry, Genetics and Molecular Biology(all)
  • Agricultural and Biological Sciences(all)

Cite this

Gut Dysbiosis in Patients with Anorexia Nervosa. / Morita, Chihiro; Tsuji, Hirokazu; Hata, Tomokazu; Gondo, Motoharu; Takakura, Shu; Kawai, Keisuke; Yoshihara, Kazufumi; Ogata, Kiyohito; Nomoto, Koji; Miyazaki, Kouji; Sudo, Nobuyuki.

In: PloS one, Vol. 10, No. 12, e0145274, 01.12.2015.

Research output: Contribution to journalArticle

Morita, C, Tsuji, H, Hata, T, Gondo, M, Takakura, S, Kawai, K, Yoshihara, K, Ogata, K, Nomoto, K, Miyazaki, K & Sudo, N 2015, 'Gut Dysbiosis in Patients with Anorexia Nervosa', PloS one, vol. 10, no. 12, e0145274. https://doi.org/10.1371/journal.pone.0145274
Morita, Chihiro ; Tsuji, Hirokazu ; Hata, Tomokazu ; Gondo, Motoharu ; Takakura, Shu ; Kawai, Keisuke ; Yoshihara, Kazufumi ; Ogata, Kiyohito ; Nomoto, Koji ; Miyazaki, Kouji ; Sudo, Nobuyuki. / Gut Dysbiosis in Patients with Anorexia Nervosa. In: PloS one. 2015 ; Vol. 10, No. 12.
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