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Li X, Xu E, Shi C, Qiao G, Chen S, Xu Y, Liu Y, Bao X. Identification and Antibiotic Susceptibility of Eggerthella lenta in Bloodstream Infections. Pol J Microbiol 2022; 71:257-261. [PMID: 35716165 PMCID: PMC9252136 DOI: 10.33073/pjm-2022-024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Accepted: 05/14/2022] [Indexed: 12/03/2022] Open
Abstract
The identification and antibiotic susceptibility of two clinical isolates of Eggerthella lenta from bloodstream infections were determined. This microorganism is rarely pathogenic, and the findings are presented here to promote the detection and awareness of this infection. The bacteria were obtained from one patient with pressure sores and another with a malignant gastric tumor. Smears were prepared, stained, and examined by microscopy. Single colonies were analyzed by Gram staining, MALDI-TOF MS, and the 16S rRNA gene sequencing. Antibiotic sensitivity was assessed by the agar dilution method. The bacilli were found to be Gram-positive, and the MS results showed 99.8% homology with E. lenta. It was confirmed by gene sequencing. Antibiotic susceptibility tests demonstrated that E. lenta was sensitive to piperacillin-tazobactam, ampicillin-sulbactam, imipenem, meropenem, metronidazole, clindamycin, and vancomycin. This study could increase awareness of this rare infection. ![]()
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Affiliation(s)
- Xiangyun Li
- Department of Laboratory Medicine, the First Affiliated Hospital of Anhui Medical University, Hefei, People's Republic of China
| | - Enjun Xu
- Department of Laboratory Medicine, the First Affiliated Hospital of Anhui Medical University, Hefei, People's Republic of China
| | - Cuixiao Shi
- Department of Laboratory Medicine, the First Affiliated Hospital of Anhui Medical University, Hefei, People's Republic of China
| | - Guanhua Qiao
- Department of Laboratory Medicine, Anhui Medical University, Hefei, People's Republic of China
| | - Shuyi Chen
- Department of Laboratory Medicine, Anhui Medical University, Hefei, People's Republic of China
| | - Yuanhong Xu
- Department of Laboratory Medicine, the First Affiliated Hospital of Anhui Medical University, Hefei, People's Republic of China
| | - Yajing Liu
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Anhui Medical University, Hefei, People's Republic of China.,NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract, Anhui Medical University, Hefei, People's Republic of China.,Anhui Province Key Laboratory of Reproductive Health and Genetics, Anhui Medical University, Hefei, People's Republic of China
| | - Xundi Bao
- Department of Laboratory Medicine, Anhui Chest Hospital, Hefei, People's Republic of China
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Zhao L, Cho WC, Nicolls MR. Colorectal Cancer-Associated Microbiome Patterns and Signatures. Front Genet 2022; 12:787176. [PMID: 35003221 PMCID: PMC8729777 DOI: 10.3389/fgene.2021.787176] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Accepted: 12/07/2021] [Indexed: 01/02/2023] Open
Abstract
The gut microbiome is dynamic and shaped by diet, age, geography, and environment. The disruption of normal gut microbiota (dysbiosis) is closely related to colorectal cancer (CRC) risk and progression. To better identify and characterize CRC-associated dysbiosis, we collected six independent cohorts with matched normal pairs (when available) for comparison and exploration of the microbiota and their interactions with the host. Comparing the microbial community compositions between cancerous and adjacent noncancerous tissues, we found that more microbes were depleted than enriched in tumors. Despite taxonomic variations among cohorts, consistent depletion of normal microbiota (members of Clostridia and Bacteroidia) and significant enrichment of oral-originated pathogens (such as Fusobacterium nucleatum and Parvimonas micra) were observed in CRC compared to normal tissues. Sets of hub and hub-connecting microbes were subsequently identified to infer microbe-microbe interaction networks in CRC. Furthermore, biclustering was used for identifying coherent patterns between patients and microbes. Two patient-microbe interaction patterns, named P0 and P1, can be consistently identified among the investigated six CRC cohorts. Characterization of the microbial community composition of the two patterns revealed that patients in P0 and P1 differed significantly in microbial alpha and beta diversity, and CRC‐associated microbiota changes consist of continuous populations of widespread taxa rather than discrete enterotypes. In contrast to the P0, the patients in P1 have reduced microbial alpha diversity compared to the adjacent normal tissues, and P1 possesses more oral-related pathogens than P0 and controls. Collectively, our study investigated the CRC-associated microbiome changes, and identified reproducible microbial signatures across multiple independent cohorts. More importantly, we revealed that the CRC heterogeneity can be partially attributed to the variety and compositional differences of microbes and their interactions to humans.
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Affiliation(s)
- Lan Zhao
- Department of Medicine, Stanford University School of Medicine, Stanford, CA, United States.,VA Palo Alto Health Care System, Palo Alto, CA, United States
| | - William C Cho
- Department of Clinical Oncology, Queen Elizabeth Hospital, Hong Kong, China
| | - Mark R Nicolls
- Department of Medicine, Stanford University School of Medicine, Stanford, CA, United States.,VA Palo Alto Health Care System, Palo Alto, CA, United States
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Eggerthella lenta bacteremia successfully treated with ceftizoxime: case report and review of the literature. Eur J Med Res 2021; 26:111. [PMID: 34544476 PMCID: PMC8454090 DOI: 10.1186/s40001-021-00582-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Accepted: 09/09/2021] [Indexed: 11/17/2022] Open
Abstract
Eggerthella lenta is a normal human microflora that is anaerobic, non-sporulating, and Gram positive. However, an increasing number of studies have shown that it could also be an important pathogen for humans, even causing life-threatening infection under certain conditions. However, understanding its pathogenic mechanism and treatment options still need to be improved; more clinical data are needed to explore it further. In this article, we report a case of ceftizoxime-cured E. lenta bacteremia and review the recent literature to provide more clinical data for the diagnosis of E. lenta bacteremia. Our report suggests that the frequency of E. lenta bacteremia is increased in patients with hematologic or solid organ cancer, diabetes mellitus and also in those with appendicitis.
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Wang J, Guo R, Ma W, Dong X, Yan S, Xie W. Eggerthella lenta Bacteremia in a Middle-Aged Healthy Man with Acute Hepatic Abscess: Case Report and Literature Review, 1970-2020. Infect Drug Resist 2021; 14:3307-3318. [PMID: 34434054 PMCID: PMC8382309 DOI: 10.2147/idr.s321282] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Accepted: 07/23/2021] [Indexed: 12/14/2022] Open
Abstract
Eggerthella lenta (E. lenta) is a rare but significant human emerging pathogen. Infections caused by it are rare and little-known, both on clinical and therapeutical aspects, in spite of new emergence of bacteria isolation and identification techniques. In this article, we report a case involving a previously healthy 52-year-old man suffering from a newly diagnosed hepatic abscess who developed E. lenta bacteremia, which was treated successfully using empirical therapy with ertapenem and teicoplanin. To the best of our knowledge, this is the first documented report of E. lenta bacteremia related specifically to liver abscess. Cases related to this bacterial species are infrequent and sporadic; thus, we reviewed English literature on E. lenta infection in PubMed/MEDLINE in the last 50 years. A total of 31 sporadic cases were identified. The majority of patients were male (71%), had an average age of 54.3 years and presented predisposing conditions, such as digestive system trouble (45.2%), immunocompromised state (25.8%) or risk factors (22.6%). Two of the cases had more than one predisposing factors. Fever was common (93.5%). Average days to diagnosis of them were 6.8 days. MALDI-TOF MS is emerging as a fast and useful tool in the identification of it. Teicoplanin, vancomycin, amoxicillin-clavulanate, metronidazole, clindamycin, cefoxitin, chloramphenicol, and carbapenems appear to be the most used antibiotic treatment options. The purpose of this review is to increase awareness about the clinical infections caused by E. lenta.
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Affiliation(s)
- Jiazheng Wang
- Department of Clinical Laboratory Medicine, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Shandong Medicine and Health Key Laboratory of Laboratory Medicine, Jinan, People's Republic of China
| | - Rui Guo
- Department of Clinical Laboratory Medicine, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Shandong Medicine and Health Key Laboratory of Laboratory Medicine, Jinan, People's Republic of China
| | - Wanshan Ma
- Department of Clinical Laboratory Medicine, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Shandong Medicine and Health Key Laboratory of Laboratory Medicine, Jinan, People's Republic of China
| | - Xiutao Dong
- Department of Clinical Laboratory Medicine, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Shandong Medicine and Health Key Laboratory of Laboratory Medicine, Jinan, People's Republic of China
| | - Shaofeng Yan
- Department of Neurosurgery, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Shandong Medicine and Health Key Laboratory of Neurosurgery, Jinan, People's Republic of China
| | - Wenyan Xie
- Department of Clinical Laboratory Medicine, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Shandong Medicine and Health Key Laboratory of Laboratory Medicine, Jinan, People's Republic of China
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Clinical and microbiological characteristics of Eggerthella lenta bacteremia. J Clin Microbiol 2014; 53:626-35. [PMID: 25520446 DOI: 10.1128/jcm.02926-14] [Citation(s) in RCA: 90] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Eggerthella lenta is an emerging pathogen that has been underrecognized due to historical difficulties with phenotypic identification. Until now, its pathogenicity, antimicrobial susceptibility profile, and optimal treatment have been poorly characterized. In this article, we report the largest cohort of patients with E. lenta bacteremia to date and describe in detail their clinical features, microbiologic characteristics, treatment, and outcomes. We identified 33 patients; the median age was 68 years, and there was no gender predominance. Twenty-seven patients (82%) had serious intra-abdominal pathology, often requiring a medical procedure. Of those who received antibiotics (28/33, 85%), the median duration of treatment was 21.5 days. Mortality from all causes was 6% at 7 days, 12% at 30 days, and 33% at 1 year. Of 26 isolates available for further testing, all were identified as E. lenta by both commercially available matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS) systems, and none were found to harbor a vanA or vanB gene. Of 23 isolates which underwent susceptibility testing, all were susceptible to amoxicillin-clavulanate, cefoxitin, metronidazole, piperacillin-tazobactam, ertapenem, and meropenem, 91% were susceptible to clindamycin, 74% were susceptible to moxifloxacin, and 39% were susceptible to penicillin.
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Lee J, Cho YG, Kim DS, Lee HS. Eggerthella lentaBacteremia after Endoscopic Retrograde Cholangiopancreatography in an End-Stage Renal Disease Patient. ANNALS OF CLINICAL MICROBIOLOGY 2014. [DOI: 10.5145/acm.2014.17.4.128] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Affiliation(s)
- Jaehyeon Lee
- Department of Laboratory Medicine, Chonbuk National University Medical School, Jeonju, Korea
- Research Institute of Clinical Medicine of Chonbuk National University-Biomedical Research Institute of Chonbuk National University Hospital, Jeonju, Korea
| | - Yong Gon Cho
- Department of Laboratory Medicine, Chonbuk National University Medical School, Jeonju, Korea
- Chonbuk National University Hospital Regional Center for National Culture Collection for Pathogens, Jeonju, Korea
- Research Institute of Clinical Medicine of Chonbuk National University-Biomedical Research Institute of Chonbuk National University Hospital, Jeonju, Korea
| | - Dal Sik Kim
- Department of Laboratory Medicine, Chonbuk National University Medical School, Jeonju, Korea
- Research Institute of Clinical Medicine of Chonbuk National University-Biomedical Research Institute of Chonbuk National University Hospital, Jeonju, Korea
| | - Hye Soo Lee
- Department of Laboratory Medicine, Chonbuk National University Medical School, Jeonju, Korea
- Chonbuk National University Hospital Regional Center for National Culture Collection for Pathogens, Jeonju, Korea
- Research Institute of Clinical Medicine of Chonbuk National University-Biomedical Research Institute of Chonbuk National University Hospital, Jeonju, Korea
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