Comparative analysis of gastric bacterial microbiota in Mongolian gerbils after long-term infection with Helicobacter pylori

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• 作者：Takako Osaki^a ; ^{osaki@ks.kyorin-u.ac.jp} ; Takahiro Matsuki^b ; ^{takahiro-matsuki@yakult.co.jp} ; Takashi Asahara^b ; ^{takashi-asahara@yakult.co.jp} ; Cynthia Zaman^a ; ^{c.zaman@gmail.com} ; Tomoko Hanawa^a ; ^{thanawa@ks.kyorin-u.ac.jp} ; Hideo Yonezawa^a ; ^{Yonezawa@ks.kyorin-u.ac.jp} ; Satoshi Kurata^a ; ^{kura@ks.kyorin-u.ac.jp} ; Timothy Derg-hoong Woo^a ; ^{tdhw3@churchillians.net} ; Koji Nomoto^b ; ^{koji-nomoto@yakult.co.jp} ; Shigeru Kamiya^a ; ^{skamiya@ks.kyorin-u.ac.jp}
• 关键词：Helicobacter pylori ; Gastric microbiota ; Mongolian gerbil ; 16S rDNA
• 刊名：Microbial Pathogenesis
• 出版年：2012
• 期刊代码：172_08824010
• 类别：bio
• 出版时间：July, 2012
• 卷：53
• 期：1
• 页码：12-18
• 文件大小：248 K

摘要

Quantitative (qt) real time PCR using 16SrDNA primers is useful for determination of the bacterial composition of the gastric microbiota in Mongolian gerbils. The aim of this study was to determine the change in the gastric microbiota after long-term infection with Helicobacter pylori. One year after inoculation with H.聽pylori, five gerbils were determined as H.聽pylori-positive and 6 gerbils H.聽pylori-negative by culture and real time qt PCR methods. The gastric microbiota of each group of gerbils was also compared with that of 6 gerbils uninfected with H.聽pylori. DNA from the Atopobium cluster, Bifidobacterium spp., Clostridium coccoides group, Clostridium leptum subgroup, Enterococcus spp. and Lactobacillus spp. were detected in the gastric mucus of both infected and uninfected gerbils. In contrast, Eubacterium cylindroides group and Prevotella spp. were detected only in H.聽pylori-negative gerbils. The numbers of C.聽leptum subgroup, C.聽coccoides group and Bifidobacterium spp. in gastric mucus of H.聽pylori-negative Mongolian gerbils were significantly lower than those in non-infected gerbils. The results obtained suggest that the composition of gastric indigenous microbiota in Mongolian gerbils may be disturbed by long-term infection with H.聽pylori, and that these changes may in fact inhibit H.聽pylori infection.