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Fernández Vecilla D, Roche Matheus MP, Pérez Ramos IS, Urrutikoetxea Gutiérrez MJ, Iglesias Hidalgo G, Calvo Muro FE, Díaz de Tuesta Del Arco JL. Is Bacteroides finegoldii a new bacterial pathogen? Anaerobe 2023; 79:102690. [PMID: 36586473 DOI: 10.1016/j.anaerobe.2022.102690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 12/24/2022] [Accepted: 12/28/2022] [Indexed: 12/31/2022]
Abstract
Bacteoides finegoldii is a Gram-negative, rod-shaped and obligate anaerobic bacteria isolated in human feces during studies of intestinal microbiota. We present a case report in which B. finegoldii was isolated and identified from the blood culture of a 93-year-old patient with abdominal pain. Microbiological identification was performed by MALDI-TOF MS and confirmed later by 16S rRNA sequencing. An abdomino-pelvic CT scan was conducted, showing a mass of neoplastic appearance that infiltrated the sigmoid colon and bladder, probably producing a colo-vesical fistula. Up to now, this is the first report of B. finegoldii causing human infection.
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Affiliation(s)
- Domingo Fernández Vecilla
- Clinical Microbiology and Parasitology Service, Basurto University Hospital, 18 Avenida Montevideo, 48013, Bilbao, Biscay, Spain; Biocruces Bizkaia Health Research Institute, Cruces Plaza, 48903, Biscay, Spain.
| | - Mary Paz Roche Matheus
- Clinical Microbiology and Parasitology Service, Basurto University Hospital, 18 Avenida Montevideo, 48013, Bilbao, Biscay, Spain; Biocruces Bizkaia Health Research Institute, Cruces Plaza, 48903, Biscay, Spain.
| | - Iris Sharon Pérez Ramos
- Clinical Microbiology and Parasitology Service, Basurto University Hospital, 18 Avenida Montevideo, 48013, Bilbao, Biscay, Spain; Biocruces Bizkaia Health Research Institute, Cruces Plaza, 48903, Biscay, Spain.
| | - Mikel Joseba Urrutikoetxea Gutiérrez
- Clinical Microbiology and Parasitology Service, Basurto University Hospital, 18 Avenida Montevideo, 48013, Bilbao, Biscay, Spain; Biocruces Bizkaia Health Research Institute, Cruces Plaza, 48903, Biscay, Spain.
| | - Gotzon Iglesias Hidalgo
- Radiodiagnosis Service of Cruces University Hospital, Spain; Biocruces Bizkaia Health Research Institute, Cruces Plaza, 48903, Biscay, Spain.
| | - Felicitas Elena Calvo Muro
- Clinical Microbiology and Parasitology Service, Basurto University Hospital, 18 Avenida Montevideo, 48013, Bilbao, Biscay, Spain; Biocruces Bizkaia Health Research Institute, Cruces Plaza, 48903, Biscay, Spain.
| | - José Luis Díaz de Tuesta Del Arco
- Clinical Microbiology and Parasitology Service, Basurto University Hospital, 18 Avenida Montevideo, 48013, Bilbao, Biscay, Spain; Biocruces Bizkaia Health Research Institute, Cruces Plaza, 48903, Biscay, Spain.
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Kaeuffer C, Ruge T, Diancourt L, Romain B, Ruch Y, Jaulhac B, Boyer PH. First Case of Bacteraemia Due to Carbapenem-Resistant Bacteroides faecis. Antibiotics (Basel) 2021; 10:antibiotics10030319. [PMID: 33808699 PMCID: PMC8003481 DOI: 10.3390/antibiotics10030319] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 03/17/2021] [Accepted: 03/18/2021] [Indexed: 11/21/2022] Open
Abstract
Multidrug resistant (MDR) bacteria are increasingly observed in nosocomial and community-acquired settings. Anaerobes are no exception to this rule, but there are fewer reports of MDR in the scientific literature on anaerobes than there are for other bacteria. In this short case report, we describe the first case of bacteraemia caused by a multidrug-resistant Bacteroides faecis, which produces a carbapenemase encoded by the blaCfiA gene. This bacteraemia followed a digestive surgery operation. Surprisingly, these findings did not lead to a change in antibiotic therapy, probably because the patient’s clinical state had improved. Nevertheless this report calls for better knowledge of anaerobic bacteria and for a systematic antimicrobial stewardship procedure following bacteraemia.
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Affiliation(s)
- Charlotte Kaeuffer
- Department of Infectious Disease, Strasbourg University Hospital, 67000 Strasbourg, France; (C.K.); (Y.R.)
| | - Tiffany Ruge
- Laboratory of Bacteriology, Hôpitaux Universitaires de Strasbourg, 67000 Strasbourg, France; (T.R.); (B.J.)
| | - Laure Diancourt
- National Reference Center for Anaerobic Bacteria and Botulism, Institut Pasteur, 25-28 Rue du Docteur Roux, 75724 Paris, France;
| | - Benoît Romain
- Department of Digestive Surgery, Strasbourg University Hospital, 67000 Strasbourg, France;
| | - Yvon Ruch
- Department of Infectious Disease, Strasbourg University Hospital, 67000 Strasbourg, France; (C.K.); (Y.R.)
| | - Benoît Jaulhac
- Laboratory of Bacteriology, Hôpitaux Universitaires de Strasbourg, 67000 Strasbourg, France; (T.R.); (B.J.)
- Institut de Bactériologie, Fédération de Médecine Translationnelle de Strasbourg, University of Strasbourg, 67000 Strasbourg, France
- CHRU Strasbourg, UR7290, ITI InnoVec, 3 Rue Koeberlé, 67000 Strasbourg, France
| | - Pierre H. Boyer
- Laboratory of Bacteriology, Hôpitaux Universitaires de Strasbourg, 67000 Strasbourg, France; (T.R.); (B.J.)
- Institut de Bactériologie, Fédération de Médecine Translationnelle de Strasbourg, University of Strasbourg, 67000 Strasbourg, France
- CHRU Strasbourg, UR7290, ITI InnoVec, 3 Rue Koeberlé, 67000 Strasbourg, France
- Correspondence:
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Guo M, Xu E, Ai D. Inferring Bacterial Infiltration in Primary Colorectal Tumors From Host Whole Genome Sequencing Data. Front Genet 2019; 10:213. [PMID: 30930939 PMCID: PMC6428740 DOI: 10.3389/fgene.2019.00213] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2019] [Accepted: 02/27/2019] [Indexed: 12/13/2022] Open
Abstract
Colorectal cancer is the third most common cancer worldwide with abysmal survival, thus requiring novel therapy strategies. Numerous studies have frequently observed infiltrating bacteria within the primary tumor tissues derived from patients. These studies have implicated the relative abundance of these bacteria as a contributing factor in tumor progression. Infiltrating bacteria are believed to be among the major drivers of tumorigenesis, progression, and metastasis and, hence, promising targets for new treatments. However, measuring their abundance directly remains challenging. One potential approach is to use the unmapped reads of host whole genome sequencing (hWGS) data, which previous studies have considered as contaminants and discarded. Here, we developed rigorous bioinformatics and statistical procedures to identify tumor-infiltrating bacteria associated with colorectal cancer from such whole genome sequencing data. Our approach used the reads of whole genome sequencing data of colon adenocarcinoma tissues not mapped to the human reference genome, including unmapped paired-end read pairs and single-end reads, the mates of which were mapped. We assembled the unmapped read pairs, remapped all those reads to the collection of human microbiome reference, and then computed their relative abundance of microbes by maximum likelihood (ML) estimation. We analyzed and compared the relative abundance and diversity of infiltrating bacteria between primary tumor tissues and associated normal blood samples. Our results showed that primary tumor tissues contained far more diverse total infiltrating bacteria than normal blood samples. The relative abundance of Bacteroides fragilis, Bacteroides dorei, and Fusobacterium nucleatum was significantly higher in primary colorectal tumors. These three bacteria were among the top ten microbes in the primary tumor tissues, yet were rarely found in normal blood samples. As a validation step, most of these bacteria were also closely associated with colorectal cancer in previous studies with alternative approaches. In summary, our approach provides a new analytic technique for investigating the infiltrating bacterial community within tumor tissues. Our novel cloud-based bioinformatics and statistical pipelines to analyze the infiltrating bacteria in colorectal tumors using the unmapped reads of whole genome sequences can be freely accessed from GitHub at https://github.com/gutmicrobes/UMIB.git.
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Affiliation(s)
- Man Guo
- School of Mathematics and Physics, University of Science and Technology Beijing, Beijing, China
| | - Er Xu
- School of Mathematics and Physics, University of Science and Technology Beijing, Beijing, China
| | - Dongmei Ai
- School of Mathematics and Physics, University of Science and Technology Beijing, Beijing, China
- Basic Experimental of Natural Science, University of Science and Technology Beijing, Beijing, China
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Garcia M, Bouvet P, Petitpas F, Jayle C, Legeay C, Sautereau J, Michaud A, Burucoa C, Plouzeau C. First case report of a human sepsis involving a recently identified anaerobic agent: Bacteroides faecis. Anaerobe 2016; 42:74-77. [PMID: 27544037 DOI: 10.1016/j.anaerobe.2016.08.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2016] [Revised: 08/10/2016] [Accepted: 08/14/2016] [Indexed: 11/17/2022]
Abstract
Up until now, Bacteroides faecis, a Gram-negative, anaerobic, non-motile, nonsporeforming rod has been principally described as a commensal microbe isolated from the feces of healthy adults. We report the first case of human Bacteroides faecis sepsis after removal of suspected post-colonic ischemia colonized epicardic electrodes. Electrodes and blood cultures both grew Gram-negative anaerobic rods but usual phenotypic methods and 16S rARN gene sequencing failed to ensure its species identification. B. faecis was finally identified using hsp60 gene sequencing. Because this species is not well-known and is difficult to identify, it may have been overlooked or misidentified in previous studies.
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Affiliation(s)
- M Garcia
- Laboratoire de Virologie et Mycobactériologie, CHU de Poitiers, Poitiers, France; EA 4331 LITEC, Université de Poitiers, Poitiers, France.
| | - P Bouvet
- Centre National de Référence des Bactéries anaérobies et du botulisme, Institut Pasteur, Paris, France
| | - F Petitpas
- Service d'Anesthésie et de Réanimation chirurgicale, CHU de Poitiers, Poitiers, France
| | - C Jayle
- Service de Chirurgie Cardio-Thoracique, CHU de Poitiers, Poitiers, France
| | - C Legeay
- Centre National de Référence des Bactéries anaérobies et du botulisme, Institut Pasteur, Paris, France
| | - J Sautereau
- Centre National de Référence des Bactéries anaérobies et du botulisme, Institut Pasteur, Paris, France
| | - A Michaud
- Laboratoire de Bactériologie, CHU de Poitiers, Poitiers, France
| | - C Burucoa
- EA 4331 LITEC, Université de Poitiers, Poitiers, France; Laboratoire de Bactériologie, CHU de Poitiers, Poitiers, France
| | - C Plouzeau
- Laboratoire de Bactériologie, CHU de Poitiers, Poitiers, France; Unité de Microbiologie Moléculaire et Séquençage, CHU de Poitiers, Poitiers, France
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