Study of the widespread of drug-resistant Enterobacteriaceae among healthy people in Japan

2011 Fiscal Year Final Research Report

• Project/Area Number: 22659103
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Single-year Grants
• Research Field: Medical sociology
• Research Institution: Osaka Prefectural Institute of Public Health (2011); Osaka University (2010)
• Principal Investigator: YAMAMOTO Yoshimasa 大阪府立公衆衛生研究所, 所長 (20010100)
• Co-Investigator(Kenkyū-buntansha): HIRAI Itaru 大阪大学, 大学院・医学系研究科, 准教授 (00359994) ; YAMAMOTO Mayumi 岐阜大学, 保健管理センター, 教授 (40313879)
• Project Period (FY): 2010 – 2011
• Keywords: 薬剤耐性菌 / 腸内細菌 / 健常人 / 日本

Research Abstract

Multidrug-resistant pathogens that produce extended-spectrumβ-lactamases(ESBLs) have spread rapidly worldwide causing treatment failure and hindering infection control efforts. In the present study, we investigated the prevalence of the fecal carriage of ESBL-producing Enterobacteriaceae among healthy adults in Japan. We found the prevalence of ESBL producers to be 6.3% by phenotypic identification, and 84% of them possessed the bla_<CTX-M> gene. Among the CTX-M ESBL-producing Enterobacteriaceae, the majority of them was Escherichia coli. The findings suggest that the fecal carriage of ESBL producers by healthy people is rapidly increasing from the previous report that showed approximately 0.3% prevalence 10 years ago, in Japan.

Research Products

• [Journal Article] 医療系学生における基質特異性拡張型βラクタマーゼ産生腸内細菌保持率 (2011)
  • Author(s): 仁木真理恵、平井到、山本容正
  • Journal Title: 環境感染誌 Volume: 26 Pages: 154-156
  • Peer Reviewed
• [Journal Article] Extended-spectrum beta-lactamase-producing Escherichia coli strains in the feces of carriers contribute substantially to urinary tract infections in these patients (2011)
  • Author(s): Niki, M., Hirai, I., Yoshinaga, A., Ulzii-Orshikh, L., Nakata, A., Yamamoto, A., Yamamoto, M., Yamamoto, Y.
  • Journal Title: Infection Volume: 39 Pages: 467-471
  • Peer Reviewed
• [Journal Article] Prevalence of fecal carriage of extended-spectrum beta-lactamase-producing Enterobacteriaceae among healthy adult people in Japan (2011)
  • Author(s): Luvsansharav, U. O., Hirai, I., Niki, M., Nakata, A., Yoshinaga, A., Moriyama, T., Yamamoto, Y.
  • Journal Title: J. Infect. Chemother Volume: 60 Pages: 619-624
  • Peer Reviewed
• [Presentation] Inverse PCR RFLPを用いたEscherichia coli O25 : H4-ST131, Phylogroup B2, CTX-M-15臨床分離株のプラスミド解析 (2011)
  • Author(s): 福井直希, 他
  • Organizer: 日本細菌学会関西支部総会
  • Place of Presentation: 大阪府堺市
  • Year and Date: 2011-11-19
• [Presentation] 介護老人保健施設入所者におけるESBL産生菌の検出 (2011)
  • Author(s): 仁木真理恵, 他
  • Organizer: 第26回日本環境感染学会総会
  • Place of Presentation: パシフィコ横浜、横浜市
  • Year and Date: 2011-02-18
• [Presentation] 介護老人保健施設入所者のESBL産生菌保菌について (2010)
  • Author(s): 仁木真理恵, 他
  • Organizer: 第50回近畿医学検査学会
  • Place of Presentation: 奈良県文化会館、奈良市
  • Year and Date: 2010-12-11
• [Presentation] 日本の健常人におけるESBL産生菌の保菌率 (2010)
  • Author(s): 中田有理沙, 他
  • Organizer: 第50回近畿医学検査学会
  • Place of Presentation: 奈良県文化会館、奈良市
  • Year and Date: 2010-12-11
• [Presentation] 日本におけるPhylogroup B2、ST131に属するCTX-M型ESBL産生大腸菌の検出 (2010)
  • Author(s): 吉永亜耶, 他
  • Organizer: 第63回日本細菌学会関西支部総会
  • Place of Presentation: 関西医科大学附属枚方病院講堂、枚方市
  • Year and Date: 2010-11-20
• [Presentation] 近畿圏介護老人保健施設入所者の基質特異性拡張型β-lactamase産生菌出現率の検討 (2010)
  • Author(s): 仁木真理恵, 他
  • Place of Presentation: 関西医科大学附属枚方病院講堂、枚方市
  • Year and Date: 2010-11-20