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Akine D, Sasahara T, Kiga K, Ae R, Kosami K, Yoshimura A, Kubota Y, Sasaki K, Kimura Y, Ogawa M, Watanabe S, Morisawa Y, Cui L. Distribution of Extended-Spectrum β-Lactamase Genes and Antimicrobial Susceptibility among Residents in Geriatric Long-Term Care Facilities in Japan. Antibiotics (Basel) 2021; 11:antibiotics11010036. [PMID: 35052913 PMCID: PMC8773109 DOI: 10.3390/antibiotics11010036] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 12/20/2021] [Accepted: 12/27/2021] [Indexed: 12/30/2022] Open
Abstract
A high prevalence of extended-spectrum β-lactamase-producing Enterobacterales (ESBL-PE) may call for monitoring in geriatric long-term care facilities (g-LTCFs). We surveyed the distribution of ESBL-causative gene types and antimicrobial susceptibility in ESBL-PE strains from residents in g-LTCFs, and investigated the association between ESBL-causative gene types and antimicrobial susceptibility. First, we analyzed the types of ESBL-causative genes obtained from 141 ESBL-PE strains collected from the feces of residents in four Japanese g-LTCFs. Next, we determined the minimum inhibitory concentration values for alternative antimicrobial agents against ESBL-PE, including β-lactams and non-β-lactams. Escherichia coli accounted for 96% of the total ESBL-PE strains. Most strains (94%) contained blaCTX-M group genes. The genes most commonly underlying resistance were of the blaCTX-M-9 and blaCTX-M-1 groups. Little difference was found in the distribution of ESBL-causative genes among the facilities; however, antimicrobial susceptibility differed widely among the facilities. No specific difference was found between antimicrobial susceptibility and the number of ESBL-causative genes. Our data showed that ESBL-PEs were susceptible to some antimicrobial agents, but the susceptibility largely differed among facilities. These findings suggest that each g-LTCF may require specific treatment strategies based on their own antibiogram. Investigations into drug resistance should be performed in g-LTCFs as well as acute medical facilities.
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Affiliation(s)
- Dai Akine
- Division of Clinical Infectious Diseases, School of Medicine, Jichi Medical University, Yakushiji 3311-1, Shimotsuke 329-0498, Tochigi, Japan; (D.A.); (Y.M.)
- Health Service Center, Jichi Medical University, Yakushiji 3311-1, Shimotsuke 329-0498, Tochigi, Japan;
| | - Teppei Sasahara
- Division of Clinical Infectious Diseases, School of Medicine, Jichi Medical University, Yakushiji 3311-1, Shimotsuke 329-0498, Tochigi, Japan; (D.A.); (Y.M.)
- Division of Bacteriology, School of Medicine, Jichi Medical University, Yakushiji 3311-1, Shimotsuke 329-0498, Tochigi, Japan; (K.K.); (S.W.); (L.C.)
- Division of Public Health, Center for Community Medicine, Jichi Medical University, Yakushiji 3311-1, Shimotsuke 329-0498, Tochigi, Japan;
- Correspondence: (T.S.); (R.A.); Tel.: +81-285-58-7580 (T.S.)
| | - Kotaro Kiga
- Division of Bacteriology, School of Medicine, Jichi Medical University, Yakushiji 3311-1, Shimotsuke 329-0498, Tochigi, Japan; (K.K.); (S.W.); (L.C.)
| | - Ryusuke Ae
- Division of Public Health, Center for Community Medicine, Jichi Medical University, Yakushiji 3311-1, Shimotsuke 329-0498, Tochigi, Japan;
- Correspondence: (T.S.); (R.A.); Tel.: +81-285-58-7580 (T.S.)
| | - Koki Kosami
- Division of Public Health, Center for Community Medicine, Jichi Medical University, Yakushiji 3311-1, Shimotsuke 329-0498, Tochigi, Japan;
| | - Akio Yoshimura
- Medical Corporation Sanikukai Nissin Hospital, Hishimachi 3 chome, Kiryu 376-0001, Gunma, Japan;
| | - Yoshinari Kubota
- Nikko Citizen’s Hospital, Kiyotakiarasawamachi 1752-10, Nikko 321-1441, Tochigi, Japan;
| | - Kazumasa Sasaki
- Clinical Microbiology Laboratory, Jichi Medical University Hospital, Yakushiji 3311-1, Shimotsuke 329-0498, Tochigi, Japan; (K.S.); (Y.K.)
| | - Yumiko Kimura
- Clinical Microbiology Laboratory, Jichi Medical University Hospital, Yakushiji 3311-1, Shimotsuke 329-0498, Tochigi, Japan; (K.S.); (Y.K.)
| | - Masanori Ogawa
- Health Service Center, Jichi Medical University, Yakushiji 3311-1, Shimotsuke 329-0498, Tochigi, Japan;
| | - Shinya Watanabe
- Division of Bacteriology, School of Medicine, Jichi Medical University, Yakushiji 3311-1, Shimotsuke 329-0498, Tochigi, Japan; (K.K.); (S.W.); (L.C.)
| | - Yuji Morisawa
- Division of Clinical Infectious Diseases, School of Medicine, Jichi Medical University, Yakushiji 3311-1, Shimotsuke 329-0498, Tochigi, Japan; (D.A.); (Y.M.)
| | - Longzhu Cui
- Division of Bacteriology, School of Medicine, Jichi Medical University, Yakushiji 3311-1, Shimotsuke 329-0498, Tochigi, Japan; (K.K.); (S.W.); (L.C.)
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