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Mori N, Nakamura A, Hirai J, Asai N, Shibata Y, Takayama M, Kawamoto Y, Miyazaki N, Sakanashi D, Ohno T, Yamada A, Suematsu H, Koita I, Chida S, Ohta T, Mikamo H. Clinical characteristics and antimicrobial susceptibility of Fusobacterium species isolated over 10 years at a Japanese university hospital. Eur J Clin Microbiol Infect Dis 2024; 43:423-433. [PMID: 38112966 DOI: 10.1007/s10096-023-04734-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Accepted: 12/02/2023] [Indexed: 12/21/2023]
Abstract
PURPOSE Anaerobic bacteria, existing on human skin and mucous membranes, can cause severe infections with complications or mortality. We examined the clinical characteristics of patients infected with Fusobacterium spp. and assessed their antibiotic susceptibility. METHODS Clinical data were collated from patients diagnosed with Fusobacterium infections in a Japanese university hospital between 2014 and 2023. Antibiotic susceptibility tests were conducted following the Clinical and Laboratory Standards Institute guidelines. RESULTS We identified 299 Fusobacterium isolates. The median age was 61 years (range, 14-95 years), with females constituting 43.1% of the patients. Most infections were community-acquired (84.6%, 253/299). Multiple bacterial strains were isolated simultaneously in 74.6% of cases. One-fourth of the patients had solid organ malignancies (25.4%, 76/299), and 14.5% (11/76) of those had colorectal cancer. The 30-day mortality rate was 1.3%. Fusobacterium species were isolated from blood cultures in 6% (18/299) of the patients. Patients, aged 75 years or older, with cerebrovascular disease or hematologic malignancy exhibited significantly higher prevalence of blood culture isolates in univariate analysis. Each Fusobacterium species had its characteristic infection site. Approximately 5% F. nucleatum and F. necrophorum isolates showed penicillin G resistance. Moxifloxacin resistance was observed in varying degrees across strains, ranging from 4.6 to 100% of isolates. All isolates were sensitive to β-lactam/β-lactamase inhibitors, carbapenems, and metronidazole. CONCLUSION We show a link between Fusobacterium species and solid organ malignancies. We observed resistance to penicillin, cefmetazole, clindamycin, and moxifloxacin, warranting caution in their clinical use. This study offers valuable insights for managing Fusobacterium infections and guiding empirical treatments.
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Affiliation(s)
- Nobuaki Mori
- Department of Clinical Infectious Diseases, Aichi Medical University, 1-1 Yazakokarimata Nagakute-Shi, Aichi, 480-1195, Japan
- Department of Infection Prevention and Control, Aichi Medical University Hospital, 1-1 Yazakokarimata Nagakute-Shi, Aichi, 480-1195, Japan
| | - Akiko Nakamura
- Department of Infection Prevention and Control, Aichi Medical University Hospital, 1-1 Yazakokarimata Nagakute-Shi, Aichi, 480-1195, Japan
| | - Jun Hirai
- Department of Clinical Infectious Diseases, Aichi Medical University, 1-1 Yazakokarimata Nagakute-Shi, Aichi, 480-1195, Japan
- Department of Infection Prevention and Control, Aichi Medical University Hospital, 1-1 Yazakokarimata Nagakute-Shi, Aichi, 480-1195, Japan
| | - Nobuhiro Asai
- Department of Clinical Infectious Diseases, Aichi Medical University, 1-1 Yazakokarimata Nagakute-Shi, Aichi, 480-1195, Japan
- Department of Infection Prevention and Control, Aichi Medical University Hospital, 1-1 Yazakokarimata Nagakute-Shi, Aichi, 480-1195, Japan
| | - Yuichi Shibata
- Department of Infection Prevention and Control, Aichi Medical University Hospital, 1-1 Yazakokarimata Nagakute-Shi, Aichi, 480-1195, Japan
| | - Mina Takayama
- Department of Infection Prevention and Control, Aichi Medical University Hospital, 1-1 Yazakokarimata Nagakute-Shi, Aichi, 480-1195, Japan
| | - Yuzuka Kawamoto
- Department of Infection Prevention and Control, Aichi Medical University Hospital, 1-1 Yazakokarimata Nagakute-Shi, Aichi, 480-1195, Japan
| | - Narimi Miyazaki
- Department of Infection Prevention and Control, Aichi Medical University Hospital, 1-1 Yazakokarimata Nagakute-Shi, Aichi, 480-1195, Japan
| | - Daisuke Sakanashi
- Department of Infection Prevention and Control, Aichi Medical University Hospital, 1-1 Yazakokarimata Nagakute-Shi, Aichi, 480-1195, Japan
| | - Tomoko Ohno
- Department of Infection Prevention and Control, Aichi Medical University Hospital, 1-1 Yazakokarimata Nagakute-Shi, Aichi, 480-1195, Japan
| | - Atsuko Yamada
- Department of Infection Prevention and Control, Aichi Medical University Hospital, 1-1 Yazakokarimata Nagakute-Shi, Aichi, 480-1195, Japan
| | - Hiroyuki Suematsu
- Department of Infection Prevention and Control, Aichi Medical University Hospital, 1-1 Yazakokarimata Nagakute-Shi, Aichi, 480-1195, Japan
| | - Isao Koita
- Department of Infection Prevention and Control, Aichi Medical University Hospital, 1-1 Yazakokarimata Nagakute-Shi, Aichi, 480-1195, Japan
| | - Sumie Chida
- Department of Infection Prevention and Control, Aichi Medical University Hospital, 1-1 Yazakokarimata Nagakute-Shi, Aichi, 480-1195, Japan
| | - Toshiaki Ohta
- Department of Infection Prevention and Control, Aichi Medical University Hospital, 1-1 Yazakokarimata Nagakute-Shi, Aichi, 480-1195, Japan
| | - Hiroshige Mikamo
- Department of Clinical Infectious Diseases, Aichi Medical University, 1-1 Yazakokarimata Nagakute-Shi, Aichi, 480-1195, Japan.
- Department of Infection Prevention and Control, Aichi Medical University Hospital, 1-1 Yazakokarimata Nagakute-Shi, Aichi, 480-1195, Japan.
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Li ZT, Han SX, Pu JY, Wang YY, Jiang Y, Gao MJ, Zhan XB, Xu S. In Vitro Digestion and Fecal Fermentation of Low-Gluten Rice and Its Effect on the Gut Microbiota. Foods 2023; 12:foods12040855. [PMID: 36832930 PMCID: PMC9956666 DOI: 10.3390/foods12040855] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 02/11/2023] [Accepted: 02/13/2023] [Indexed: 02/19/2023] Open
Abstract
Low-gluten rice is part of a special diet for chronic kidney disease patients, but its digestive mechanism in the gastrointestinal tract is unclear. In this study, low-gluten rice (LGR), common rice (CR), and rice starch (RS) were used as experimental samples, and their digestion and bacterial fermentation were simulated using an in vitro gastrointestinal reactor to investigate the mechanism of the effect of LGR on human health. The starch digestibility of CR was higher than that of LGR, with statistically significant differences. LGR has growth-promoting and metabolic effects on Akkermansia muciniphila. Among the beneficial metabolites, the concentration of short-chain fatty acids (SCFAs) from LGR reached 104.85 mmol/L, an increase of 44.94% (versus RS) and 25.33% (versus CR). Moreover, the concentration of lactic acid reached 18.19 mmol/L, an increase of 60.55% (versus RS) and 25.28% (versus CR). Among the harmful metabolites, the concentration of branched-chain fatty acids (BCFAs) in LGR was 0.29 mmol/L and the concentration of ammonia was 2.60 mmol/L, which was 79.31% and 16.15% lower than CR, respectively. A significant increase in the concentration of the beneficial intestinal bacteria Bacteroides and Bifidobacterium occurred from LGR. The 16s rDNA sequencing showed that the abundance of the Bacteroidetes and Firmicutes increased and the abundance of the Proteobacteria and Fusobacteria decreased. Thus, LGR has positive effects on digestion and gut microbiota structure and metabolism in humans.
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Affiliation(s)
- Zhi-Tao Li
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Shuang-Xin Han
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Jia-Yang Pu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Yu-Ying Wang
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Yun Jiang
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Min-Jie Gao
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Xiao-Bei Zhan
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
- Correspondence: (X.-B.Z.); (S.X.); Tel.: +86-51085918299 (X.-B.Z.); +86-51068089784 (S.X.)
| | - Song Xu
- Department of Hepatobiliary Surgery, Affiliated Hospital of Jiangnan University, Wuxi 214122, China
- Correspondence: (X.-B.Z.); (S.X.); Tel.: +86-51085918299 (X.-B.Z.); +86-51068089784 (S.X.)
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Yun SY, Lee Y, Hong J, Kim DC, Lee H, Yong D, Lim YK, Kook JK, Lee K. Identification of Fusobacterium Species Using Matrix-Assisted Laser Desorption/Ionization-Time-of-Flight Mass Spectrometry by Updating ASTA CoreDB. Yonsei Med J 2022; 63:1138-1143. [PMID: 36444550 PMCID: PMC9760896 DOI: 10.3349/ymj.2022.0271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 10/14/2022] [Accepted: 10/20/2022] [Indexed: 11/22/2022] Open
Abstract
PURPOSE Fusobacterium species can cause infections, and associations with cancer are being increasingly reported. As their clinical significance differs, accurate identification of individual species is important. However, matrix-assisted laser desorption/ionization-time of flight mass spectrometry has not been found to be effective in identifying Fusobacterium species in previous studies. In this study, we aimed to improve the accuracy and efficacy of identifying Fusobacterium species in clinical laboratories. MATERIALS AND METHODS In total, 229 Fusobacterium isolates were included in this study. All isolates were identified at the species level based on nucleotide sequences of the 16S ribosomal RNA gene and/or DNA-dependent RNA polymerase β-subunit gene (rpoB). Where necessary, isolates were identified based on whole genome sequences. Among them, 47 isolates were used for updating the ASTA database, and 182 isolates were used for the validation of Fusobacterium spp. identification. RESULTS Fusobacterium isolates used for validation (182/182) were correctly identified at the genus level, and most (180/182) were correctly identified at the species level using the ASTA MicroIDSys system. Most of the F. nucleatum isolates (74/75) were correctly identified at the subspecies level. CONCLUSION The updated ASTA MicroIDSys system can identify nine species of Fusobacterium and four subspecies of F. nucleatum in good agreement. This tool can be routinely used in clinical microbiology laboratories to identify Fusobacterium species and serve as a springboard for future research.
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Affiliation(s)
- Shin Young Yun
- Department of Laboratory Medicine and Research Institute of Bacterial Resistance, Yonsei University College of Medicine, Seoul, Korea
| | - Yunhee Lee
- Department of Laboratory Medicine and Research Institute of Bacterial Resistance, Yonsei University College of Medicine, Seoul, Korea
| | - Juwon Hong
- R&D Center, NOSQUEST Inc., Yongin, Korea
| | | | - Hyukmin Lee
- Department of Laboratory Medicine and Research Institute of Bacterial Resistance, Yonsei University College of Medicine, Seoul, Korea.
| | - Dongeun Yong
- Department of Laboratory Medicine and Research Institute of Bacterial Resistance, Yonsei University College of Medicine, Seoul, Korea
| | - Yun Kyong Lim
- Korean Collection for Oral Microbiology and Department of Oral Biochemistry, School of Dentistry, Chosun University, Gwangju, Korea
| | - Joong-Ki Kook
- Korean Collection for Oral Microbiology and Department of Oral Biochemistry, School of Dentistry, Chosun University, Gwangju, Korea.
| | - Kyungwon Lee
- Department of Laboratory Medicine and Research Institute of Bacterial Resistance, Yonsei University College of Medicine, Seoul, Korea
- Seoul Clinical Laboratories Academy, Yongin, Korea
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