Biochemistry and Biophysics Reports (Mar 2021)

Evaluation of intestinal microbiota, short-chain fatty acids, and immunoglobulin a in diversion colitis

  • Kentaro Tominaga,
  • Atsunori Tsuchiya,
  • Takeshi Mizusawa,
  • Asami Matsumoto,
  • Ayaka Minemura,
  • Kentaro Oka,
  • Motomichi Takahashi,
  • Tomoaki Yosida,
  • Yuzo Kawata,
  • Kazuya Takahashi,
  • Hiroki Sato,
  • Satoshi Ikarashi,
  • Kazunao Hayashi,
  • Ken-ichi Mizuno,
  • Yosuke Tajima,
  • Masato Nakano,
  • Yoshifumi Shimada,
  • Hitoshi Kameyama,
  • Junji Yokoyama,
  • Toshifumi Wakai,
  • Shuji Terai

Journal volume & issue
Vol. 25
p. 100892

Abstract

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It is reported that an increase in aerobic bacteria, a lack of short-chain fatty acids (SCFAs), and immune disorders in the diverted colon are major causes of diversion colitis. However, the precise pathogenesis of this condition remains unclear. The aim of the present study was to examine the microbiota, intestinal SCFAs, and immunoglobulin A (IgA) in the diverted colon. Eight patients underwent operative procedures for colostomies. We assessed the diverted colon using endoscopy and obtained intestinal samples from the diverted colon and oral colon in these patients. We analyzed the microbiota and SCFAs of the intestinal samples. The bacterial communities were investigated using a 16S rRNA gene sequencing method. The microbiota demonstrated a change in the proportion of some species, especially Lactobacillus, which significantly decreased in the diverted colon at the genus level. We also showed that intestinal SCFA values were significantly decreased in the diverted colon. Furthermore, intestinal IgA levels were significantly increased in the diverted colon. This study was the first to show that intestinal SCFAs were significantly decreased and intestinal IgA was significantly increased in the diverted colon. Our data suggest that SCFAs affect the microbiota and may play an immunological role in diversion colitis.

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