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Bodin J, Gallego-Hernanz MP, Plouzeau Jayle C, Michaud A, Broutin L, Cremniter J, Burucoa C, Pichon M. Bacteremia due to Lachnoanaerobaculum umeaense in a patient with acute myeloid leukemia during chemotherapy: A case report, and a review of the literature. J Infect Chemother 2024; 30:912-916. [PMID: 38336170 DOI: 10.1016/j.jiac.2024.02.003] [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: 10/26/2023] [Revised: 01/23/2024] [Accepted: 02/02/2024] [Indexed: 02/12/2024]
Abstract
The present case reports a bacteremia due to Lachnoanaerobaculum umeaense (a Gram-positive, filamentous, rod-shaped, anaerobic, spore-forming bacillus present in the human oral microbiota) in a patient treated for acute myeloid leukemia. After failed identification by MALDI-TOF, identification was done by sequencing of 16s rRNA. The patient was successfully treated with Amoxicillin-clavulanic acid and ciprofloxacin for seven days. Comparison of V1-V3 regions of the bacterial 16S rRNA gene gene with published sequences failed to classify the strain as pathogenic or non-pathogenic based on this phylogenetic classification alone. Although Lachnoanaerobaculum gingivalis are known to be associated with bacteremia in patients with acute myeloid leukemia, this clinical case of infection by L. umeaense argues for further studies that will lead to more efficient classification of the infection by these microorganisms.
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Affiliation(s)
- Julie Bodin
- Université de Poitiers, Faculté de Médecine et Pharmacie, 86000, Poitiers, France
| | | | | | - Anthony Michaud
- CHU de Poitiers, Département des Agents Infectieux, 86021, Poitiers, France
| | - Lauranne Broutin
- CHU de Poitiers, Département des Agents Infectieux, 86021, Poitiers, France
| | - Julie Cremniter
- CHU de Poitiers, Département des Agents Infectieux, 86021, Poitiers, France; Université de Poitiers, INSERM U1070 Pharmacologie des Agents Antimicrobiens et Antibiorésistance, 86022, Poitiers, France
| | - Christophe Burucoa
- CHU de Poitiers, Département des Agents Infectieux, 86021, Poitiers, France; Université de Poitiers, INSERM U1070 Pharmacologie des Agents Antimicrobiens et Antibiorésistance, 86022, Poitiers, France
| | - Maxime Pichon
- CHU de Poitiers, Département des Agents Infectieux, 86021, Poitiers, France; Université de Poitiers, INSERM U1070 Pharmacologie des Agents Antimicrobiens et Antibiorésistance, 86022, Poitiers, France.
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Sabrie NAS, Halani S, Maguire F, Aftanas P, Kozak R, Andany N. Lachnoanaerobaculum orale bacteremia in a patient with acute myeloid leukemia and stomatitis: An emerging pathogen. IDCases 2023; 33:e01837. [PMID: 37645542 PMCID: PMC10461115 DOI: 10.1016/j.idcr.2023.e01837] [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: 05/18/2023] [Revised: 06/29/2023] [Accepted: 07/01/2023] [Indexed: 08/31/2023] Open
Abstract
Background Lachnoanaerobaculum orale is a newly described, obligately anaerobic gram-positive bacillus. The first report of invasive disease caused by L. orale was described in a patient with acute lymphocytic leukemia following systematic chemotherapy. Here we describe another case of L. orale bacteremia in a patient with a hematologic malignancy following chemotherapy-induced neutropenia. Methods We present a case of a 46-year-old woman with a recent diagnosis of AML who presented to Sunnybrook Health Sciences Center with febrile neutropenia following induction chemotherapy with daunorubicin-cytarabine (3 +7 regimen) with Gemtuzumab and Ozogamycin. Despite being on intravenous pipercillin-tazobactam she remained febrile. Following our clinical assessment and investigations, potential sources of infection included a swollen digit and severe mucositis. Results One blood culture from admission grew Lachnoanaerobaculum orale in the anaerobic bottle, identified by Matrix-Assisted Laser Desorption Ionization-Time of Flight (MALDI-TOF). The isolate also underwent whole-genome sequencing using methods that have been described previously. Results demonstrated the organism was susceptible to cefoxitin, clindamycin, meropenem, metronidazole, penicillin, and piperacillin-tazobactam. We concluded that the source of this patient's bloodstream infection to be chemotherapy-induced stomatitis. Conclusion With the increasing use of intensive immunosuppressive regimens and hematopoietic stem cell transplantation for patients with hematologic malignancies, there has been an increase in the incidence and detection of bloodstream infections due to anaerobic organisms. This is only the second case report of L. orale bacteremia, highlighting its emerging role as an opportunistic pathogen in immunocompromised patients.
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Affiliation(s)
| | | | | | | | - Robert Kozak
- Shared Hospital Laboratory, Canada
- Department of Laboratory Medicine & Pathology, Sunnybrook Health Sciences Centre, Canada
| | - Nisha Andany
- Department of Medicine, University of Toronto, Canada
- Division of Infectious Diseases, Sunnybrook Health Sciences Centre, Canada
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Xu S, Lv Q, Zou N, Zhang Y, Zhang J, Tang Q, Chou SH, Lu L, He J. Influence of neo-adjuvant radiotherapy on the intestinal microbiota of rectal cancer patients. J Cancer Res Clin Oncol 2023:10.1007/s00432-022-04553-6. [PMID: 36656381 DOI: 10.1007/s00432-022-04553-6] [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: 11/11/2022] [Accepted: 12/21/2022] [Indexed: 01/20/2023]
Abstract
PURPOSE Neo-adjuvant radiotherapy (NART) is a widely used pre-surgery radiotherapy for rectal cancer patients. Although NART is effective in reducing tumor burden before surgery, it may cause dysbiosis of intestinal microbiota. The intestinal microbiota shapes tumor inflammatory environment and influences cancer progression. However, how NART remodels the microbiota and how the microbiota affects therapeutic efficacy has been largely elusive. This study aimed to reveal the details of how NART affects the intestinal microbiota in patients with rectal cancer. METHODS Rectal cancer patients who received NART were recruited into the study, and their healthy family members on the same diet served as controls. Stool samples from five rectal cancer patients (28 in total) and five healthy individuals (16 in total) were collected for intestinal microbiota analysis by 16S rRNA gene amplicon sequencing. Samples from patients were divided into earlier- and later-NART according to the number of NART. RESULTS NART did not significantly affect the α diversity of intestinal microbiota. However, the abundance of bacterial genera associated with cancer progression tended to decrease in later-NART patients. More importantly, a variety of oral pathogenic bacteria were enriched in the intestine of later-NART patients. NART also affected functional pathways associated with the microbiota in DNA repair, metabolism, and bacterial infection. CONCLUSION NART significantly altered the microbiota composition and function in rectal cancer patients, and some oral pathogens were found to translocate to the intestine. This is the first report to study the effect of NART on intestinal microbiota in patients with rectal cancer, exploring the importance of intestinal microbiota during the process of NART.
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Affiliation(s)
- Siyang Xu
- State Key Laboratory of Agricultural Microbiology & Hubei Hongshan Laboratory, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Qimei Lv
- State Key Laboratory of Agricultural Microbiology & Hubei Hongshan Laboratory, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Ning Zou
- Department of Radiation Oncology, Hubei Cancer Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430071, People's Republic of China
| | - Yuling Zhang
- State Key Laboratory of Agricultural Microbiology & Hubei Hongshan Laboratory, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Jiucheng Zhang
- Department of Radiation Oncology, Hubei Cancer Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430071, People's Republic of China
| | - Qing Tang
- State Key Laboratory of Agricultural Microbiology & Hubei Hongshan Laboratory, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Shan-Ho Chou
- State Key Laboratory of Agricultural Microbiology & Hubei Hongshan Laboratory, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Li Lu
- Department of Gastrointestinal Surgery, Hubei Cancer Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430071, People's Republic of China.
| | - Jin He
- State Key Laboratory of Agricultural Microbiology & Hubei Hongshan Laboratory, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China.
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Okada N, Murakami A, Sato M, Nakamura S, Fujii S, Sogabe K, Takahashi M, Okada A, Abe A, Fujii H, Abe M, Azuma M, Ishizawa K. First reported case of Lachnoanaerobaculum gingivalis bacteremia in an acute myeloid leukemia patient with oral mucositis during high dose chemotherapy. Anaerobe 2022; 76:102610. [PMID: 35811059 DOI: 10.1016/j.anaerobe.2022.102610] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Revised: 07/01/2022] [Accepted: 07/04/2022] [Indexed: 11/01/2022]
Abstract
CASE DESCRIPTION Lachnoanaerobaculum gingivalis is an obligate anaerobe identified in a human dental plaque in 2019. Here, we report the first case of L. gingivalis bacteremia in a patient with oral mucositis during chemotherapy. L. gingivalis was confirmed by 16S rRNA gene analysis but not by MALDI-TOF-MS. CONCLUSION During chemotherapy in patients with oral mucositis, we should consider the possibility of L. gingivalis bacteremia.
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Affiliation(s)
- Naoto Okada
- Department of Pharmacy, Tokushima University Hospital, Tokushima, Japan; Department of Infection Control and Prevention, Tokushima University Hospital, Tokushima, Japan.
| | - Akikazu Murakami
- Department of Oral Microbiology, Graduate School of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Masami Sato
- Department of Infection Control and Prevention, Tokushima University Hospital, Tokushima, Japan
| | - Shingen Nakamura
- Department of Community Medicine and Medical Science, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan
| | - Shiro Fujii
- Department of Hematology, Endocrinology and Metabolism, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Kimiko Sogabe
- Department of Hematology, Endocrinology and Metabolism, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Mamiko Takahashi
- Department of Hematology, Endocrinology and Metabolism, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Asami Okada
- Department of Pediatrics, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Akane Abe
- Department of Infection Control and Prevention, Tokushima University Hospital, Tokushima, Japan
| | - Hideki Fujii
- Department of Biology, Keio University School of Medicine, Yokohama, Japan
| | - Masahiro Abe
- Department of Hematology, Endocrinology and Metabolism, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Momoyo Azuma
- Department of Infection Control and Prevention, Tokushima University Hospital, Tokushima, Japan
| | - Keisuke Ishizawa
- Department of Pharmacy, Tokushima University Hospital, Tokushima, Japan; Department of Clinical Pharmacology and Therapeutics, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan; Clinical Research Center for Developmental Therapeutics, Tokushima University Hospital, Tokushima, Japan
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Chen Y, Huang Y, Ding X, Yang Z, He L, Ning M, Yang Z, He D, Yang L, Liu Z, Chen Y, Li G. A Multi-Omics Study of Familial Lung Cancer: Microbiome and Host Gene Expression Patterns. Front Immunol 2022; 13:827953. [PMID: 35479075 PMCID: PMC9037597 DOI: 10.3389/fimmu.2022.827953] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Accepted: 03/09/2022] [Indexed: 11/13/2022] Open
Abstract
Background Inherited susceptibility and environmental carcinogens are crucial players in lung cancer etiology. The lung microbiome is getting rising attention in carcinogenesis. The present work sought to investigate the microbiome in lung cancer patients affected by familial lung cancer (FLC) and indoor air pollution (IAP); and further, to compare host gene expression patterns with their microbiome for potential links. Methods Tissue sample pairs (cancer and adjacent nonmalignant tissue) were used for 16S rRNA (microbiome) and RNA-seq (host gene expression). Subgroup microbiome diversities and their matched gene expression patterns were analyzed. Significantly enriched taxa were screened out, based on different clinicopathologic characteristics. Results Our FLC microbiome seemed to be smaller, low-diversity, and inactive to change; we noted microbiome differences in gender, age, blood type, anatomy site, histology type, TNM stage as well as IAP and smoking conditions. We also found smoking and IAP dramatically decreased specific-OTU biodiversity, especially in normal lung tissue. Intriguingly, enriched microbes were in three categories: opportunistic pathogens, probiotics, and pollutant-detoxication microbes; this third category involved Sphingomonas, Sphingopyxis, etc. which help degrade pollutants, but may also cause epithelial damage and chronic inflammation. RNA-seq highlighted IL17, Ras, MAPK, and Notch pathways, which are associated with carcinogenesis and compromised immune system. Conclusions The lung microbiome can play vital roles in carcinogenesis. FLC and IAP subjects were affected by fragile lung epithelium, vulnerable host-microbes equilibrium, and dysregulated immune surveillance and response. Our findings provided useful information to study the triple interplay among environmental carcinogens, population genetic background, and diversified lung microbiome.
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Affiliation(s)
- Ying Chen
- Department of Thoracic Surgery I, the Third Affiliated Hospital of Kunming Medical University (Yunnan Cancer Hospital, Yunnan Cancer Center), Kunming, China
| | - Yunchao Huang
- Department of Thoracic Surgery I, the Third Affiliated Hospital of Kunming Medical University (Yunnan Cancer Hospital, Yunnan Cancer Center), Kunming, China
| | - Xiaojie Ding
- The International Cooperation Key Laboratory of Regional Tumor in High Altitude Area, the Third Affiliated Hospital of Kunming Medical University (Yunnan Cancer Hospital, Yunnan Cancer Center), Kunming, China
| | - Zhenlin Yang
- National Cancer Center/National Clinical Research Center for Cancer, Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Liang He
- Department of Clinical Laboratory, The Third Affiliated Hospital of Kunming Medical University (Yunnan Cancer Hospital, Yunnan Cancer Center), Kunming, China
| | - Mingjie Ning
- Department of Thoracic Surgery I, the Third Affiliated Hospital of Kunming Medical University (Yunnan Cancer Hospital, Yunnan Cancer Center), Kunming, China
| | - Zhenghong Yang
- Department of Thoracic Surgery I, the Third Affiliated Hospital of Kunming Medical University (Yunnan Cancer Hospital, Yunnan Cancer Center), Kunming, China
| | - Daqian He
- Department of Thoracic Surgery I, the Third Affiliated Hospital of Kunming Medical University (Yunnan Cancer Hospital, Yunnan Cancer Center), Kunming, China
| | | | | | - Yan Chen
- Cancer Research Institute of Yunnan Province, The Third Affiliated Hospital of Kunming Medical University (Yunnan Cancer Hospital, Yunnan Cancer Center), Kunming, China
| | - Guangjian Li
- Department of Thoracic Surgery I, the Third Affiliated Hospital of Kunming Medical University (Yunnan Cancer Hospital, Yunnan Cancer Center), Kunming, China
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First description of Lachnoanaerobaculum orale as a possible cause of human bacteremia. Anaerobe 2022; 73:102506. [DOI: 10.1016/j.anaerobe.2021.102506] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 12/23/2021] [Accepted: 12/25/2021] [Indexed: 11/24/2022]
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Dong T, Zhao F, Yuan K, Zhu X, Wang N, Xia F, Lu Y, Huang Z. Association Between Serum Thyroid-Stimulating Hormone Levels and Salivary Microbiome Shifts. Front Cell Infect Microbiol 2021; 11:603291. [PMID: 33718264 PMCID: PMC7952758 DOI: 10.3389/fcimb.2021.603291] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Accepted: 01/11/2021] [Indexed: 01/10/2023] Open
Abstract
High serum thyroid-stimulating hormone (TSH) levels are linked to many metabolic disorders, but the effects of TSH levels on the oral microbiota are still largely unknown. This study aimed to explore the association between the salivary microbiome in adults and serum TSH levels. Saliva and fasting blood samples were obtained from a health census conducted in Southeast China. All participants were divided according to serum TSH levels. The microbial genetic profiles and changes were acquired by 16S rDNA sequencing and bioinformatics analysis. Relevant anthropometric and biochemical measurements such as insulin resistance, blood lipids, and body composition were evaluated with laboratory tests and physical examinations. The salivary microbiome in individuals with higher TSH level showed significantly higher taxa diversity. Principal coordinates analysis and partial least squares discriminant analysis showed distinct clustering in the Abnormal and Normal Groups (Adonis, P=0.0320). Granulicatella was identified as a discriminative genus for comparison of the two groups. Fasting serum insulin, Homeostatic Model Assessment for Insulin Resistance, and hemoglobin A1 were elevated in the Abnormal Group (P<0.05), showing the presence of insulin resistance in individuals with abnormal higher serum TSH levels. Distance-based redundancy analysis revealed the association of this distinctive difference with salivary microbiome. In conclusion, shifts in microbial profile were observed in the saliva of individuals with different serum TSH levels, and insulin resistance may play an important role in the biochemical and microbial alteration.
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Affiliation(s)
- Ting Dong
- Department of Endodontics, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University, School of Medicine, Shanghai, China.,National Clinical Research Center for Oral Diseases, Shanghai, China.,Shanghai Key Laboratory of Stomatology, Shanghai, China.,Shanghai Research Institute of Stomatology, Shanghai, China
| | - Fen Zhao
- Department of Endodontics, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University, School of Medicine, Shanghai, China.,National Clinical Research Center for Oral Diseases, Shanghai, China.,Shanghai Key Laboratory of Stomatology, Shanghai, China.,Shanghai Research Institute of Stomatology, Shanghai, China
| | - Keyong Yuan
- Department of Endodontics, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University, School of Medicine, Shanghai, China.,National Clinical Research Center for Oral Diseases, Shanghai, China.,Shanghai Key Laboratory of Stomatology, Shanghai, China.,Shanghai Research Institute of Stomatology, Shanghai, China
| | - Xiaohan Zhu
- Department of Endodontics, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University, School of Medicine, Shanghai, China.,National Clinical Research Center for Oral Diseases, Shanghai, China.,Shanghai Key Laboratory of Stomatology, Shanghai, China.,Shanghai Research Institute of Stomatology, Shanghai, China
| | - Ningjian Wang
- Institute and Department of Endocrinology and Metabolism, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Fangzhen Xia
- Institute and Department of Endocrinology and Metabolism, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yingli Lu
- Institute and Department of Endocrinology and Metabolism, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhengwei Huang
- Department of Endodontics, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University, School of Medicine, Shanghai, China.,National Clinical Research Center for Oral Diseases, Shanghai, China.,Shanghai Key Laboratory of Stomatology, Shanghai, China.,Shanghai Research Institute of Stomatology, Shanghai, China
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