Multicenter study to clarify infections caused by carbapenem-resistant bacteria

2021 Fiscal Year Final Research Report

• Project/Area Number: 19K19450
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 58030:Hygiene and public health-related: excluding laboratory approach
• Research Institution: National Center for Global Health and Medicine
• Principal Investigator: SAITO SHO 国立研究開発法人国立国際医療研究センター, その他部局等, 国際感染症センター 医師 (40809274)
• Project Period (FY): 2019-04-01 – 2022-03-31
• Keywords: カルバペネム耐性 / 薬剤耐性 / IMP / カルバペネマーゼ / 臨床情報

Outline of Final Research Achievements

In 2019, we established a research network; Multi-Drug Resistant organisms clinical research network (MDRnet). A cooperative framework was established with our institution, Fujita Health University, the University of Tokyo, Japanese Red Cross Narita Hospital, Kyoto University, and Yokohama City University Hospital, and approval was obtained from the Ethics Committee of each institution, and an operational structure was put in place. Five more institutions have since joined the network, and as of March 2022, 639 carbapenem-resistant strains have been collected. In addition, detailed clinical information on patients with confirmed infection or carriage of carbapenem-resistant strains was started, and collection of 389 cases was completed. The analysis revealed that the 30-day mortality rates of carbapenem-resistant Enterobacteriaceae and non-fermentative bacteria in Japan amounted to 30% and 21.8%, respectively, indicating the significant impact of carbapenems on patients.

Free Research Field

感染症

Academic Significance and Societal Importance of the Research Achievements

本研究により日本国内におけるカルバペネム耐性腸内細菌目細菌の30日死亡率は30％、カル
バペネム耐性非発酵菌の死亡率は21.8％に上るため患者に与える影響が大きいという実態を明らかにした。また腸内細菌目細菌、非発酵菌ともにアミノグリコシド系抗菌薬の感受性率が高いため、治療のオプションとなりえると考えられた。