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Könönen E. Polymicrobial infections with specific Actinomyces and related organisms, using the current taxonomy. J Oral Microbiol 2024; 16:2354148. [PMID: 38766462 PMCID: PMC11100438 DOI: 10.1080/20002297.2024.2354148] [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: 01/22/2024] [Accepted: 05/05/2024] [Indexed: 05/22/2024] Open
Abstract
Actinomyces organisms reside on mucosal surfaces of the oropharynx and the genitourinary tract. Polymicrobial infections with Actinomyces organisms are increasingly being reported in the literature. Since these infections differ from classical actinomycosis, lacking of specific clinical and imaging findings, slow-growing Actinomyces organisms can be regarded as contaminants or insignificant findings. In addition, only limited knowledge is available about novel Actinomyces species and their clinical relevance. The recent reclassifications have resulted in the transfer of several Actinomyces species to novel genera Bowdeniella, Gleimia, Pauljensenia, Schaalia, or Winkia. The spectrum of diseases associated with specific members of Actinomyces and these related genera varies. In human infections, the most common species are Actinomyces israelii, Schaalia meyeri, and Schaalia odontolytica, which are typical inhabitants of the mouth, and Gleimia europaea, Schaalia turicensis, and Winkia neuii. In this narrative review, the purpose was to gather information on the emerging role of specific organisms within the Actinomyces and related genera in polymicrobial infections. These include Actinomyces graevenitzii in pulmonary infections, S. meyeri in brain abscesses and infections in the lower respiratory tract, S. turicensis in skin-related infections, G. europaea in necrotizing fasciitis and skin abscesses, and W. neuii in infected tissues around prostheses and devices. Increased understanding of the role of Actinomyces and related species in polymicrobial infections could provide improved outcomes for patient care. Key messages Due to the reclassification of the genus, many former Actinomyces species belong to novel genera Bowdeniella, Gleimia, Pauljensenia, Schaalia, or Winkia.Some of the species play emerging roles in specific infection types in humans.Increasing awareness of their clinical relevance as an established or a putative pathogen in polymicrobial infections brings about improved outcomes for patient care.
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Affiliation(s)
- Eija Könönen
- Institute of Dentistry, University of Turku, Turku, Finland
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Sibińska E, Arendowski A, Fijałkowski P, Gabryś D, Pomastowski P. Comparison of the Bruker Microflex LT and Zybio EXS2600 MALDI TOF MS systems for the identification of clinical microorganisms. Diagn Microbiol Infect Dis 2024; 108:116150. [PMID: 38035652 DOI: 10.1016/j.diagmicrobio.2023.116150] [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: 06/20/2023] [Revised: 11/16/2023] [Accepted: 11/24/2023] [Indexed: 12/02/2023]
Abstract
The emergence of Matrix-Assisted Laser Desorption/Ionization Time-Of-Flight Mass Spectrometry (MALDI TOF MS) technology has expanded the capabilities for identifying microorganisms in clinical labs, replacing traditional biochemical testing with a proteomic approach. In the present study, we compared results between the two commercial MALDI TOF MS systems, Bruker Microflex LT Biotyper and Zybio EXS2600 Ex-Accuspec, for the identification of 1979 urinary isolates by direct extraction method. Current study found that both systems identified a high percentage of isolates to at least the genus level - Bruker 95.6 % of isolates, Zybio 92.4 %. In the case of 89.5 % of all analyzed spectra, the identification results were consistent between the used devices. The highest score values and the highest percentage of spectra identified to species were obtained for gram-negative bacteria. The results show that both systems are equally good choices in terms of analytical performance for routine microbiological diagnostic procedures.
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Affiliation(s)
- Ewelina Sibińska
- Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University in Toruń, Wileńska 4 Str., Toruń 87-100, Poland
| | - Adrian Arendowski
- Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University in Toruń, Wileńska 4 Str., Toruń 87-100, Poland.
| | - Piotr Fijałkowski
- Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University in Toruń, Wileńska 4 Str., Toruń 87-100, Poland
| | - Dorota Gabryś
- Radiotherapy Department, Maria Sklodowska-Curie National Research Institute of Oncology, Wybrzeże Armii Krajowej 15 Str., Gliwice 44-102, Poland
| | - Paweł Pomastowski
- Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University in Toruń, Wileńska 4 Str., Toruń 87-100, Poland
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Traxler RM, Bell ME, Lasker B, Headd B, Shieh WJ, McQuiston JR. Updated Review on Nocardia Species: 2006-2021. Clin Microbiol Rev 2022; 35:e0002721. [PMID: 36314911 PMCID: PMC9769612 DOI: 10.1128/cmr.00027-21] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
This review serves as an update to the previous Nocardia review by Brown-Elliott et al. published in 2006 (B. A. Brown-Elliott, J. M. Brown, P. S. Conville, and R. J. Wallace. Jr., Clin Microbiol Rev 19:259-282, 2006, https://doi.org/10.1128/CMR.19.2.259-282.2006). Included is a discussion on the taxonomic expansion of the genus, current identification methods, and the impact of new technology (including matrix-assisted laser desorption ionization-time of flight [MALDI-TOF] and whole genome sequencing) on diagnosis and treatment. Clinical manifestations, the epidemiology, and geographic distribution are briefly discussed. An additional section on actinomycotic mycetoma is added to address this often-neglected disease.
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Affiliation(s)
- Rita M. Traxler
- Bacterial Special Pathogens Branch (BSPB), Division of High-Consequence Pathogens and Pathology (DHCPP), National Center for Emerging and Zoonotic Infectious Diseases (NCEZID), Centers for Disease Control and Prevention (CDC), Atlanta, Georgia, USA
| | - Melissa E. Bell
- Bacterial Special Pathogens Branch (BSPB), Division of High-Consequence Pathogens and Pathology (DHCPP), National Center for Emerging and Zoonotic Infectious Diseases (NCEZID), Centers for Disease Control and Prevention (CDC), Atlanta, Georgia, USA
| | - Brent Lasker
- Bacterial Special Pathogens Branch (BSPB), Division of High-Consequence Pathogens and Pathology (DHCPP), National Center for Emerging and Zoonotic Infectious Diseases (NCEZID), Centers for Disease Control and Prevention (CDC), Atlanta, Georgia, USA
| | - Brendan Headd
- Bacterial Special Pathogens Branch (BSPB), Division of High-Consequence Pathogens and Pathology (DHCPP), National Center for Emerging and Zoonotic Infectious Diseases (NCEZID), Centers for Disease Control and Prevention (CDC), Atlanta, Georgia, USA
| | - Wun-Ju Shieh
- Infectious Diseases Pathology Branch (IDPB), Division of High-Consequence Pathogens and Pathology (DHCPP), National Center for Emerging and Zoonotic Infectious Diseases (NCEZID), Centers for Disease Control and Prevention (CDC), Atlanta, Georgia, USA
| | - John R. McQuiston
- Bacterial Special Pathogens Branch (BSPB), Division of High-Consequence Pathogens and Pathology (DHCPP), National Center for Emerging and Zoonotic Infectious Diseases (NCEZID), Centers for Disease Control and Prevention (CDC), Atlanta, Georgia, USA
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Church DL, Griener T, Gregson D. Multi-year comparison of VITEK® MS and 16S rRNA gene sequencing performance for the identification of rarely encountered anaerobes causing invasive human infections in a large Canadian region: can our laboratory abandon 16S rRNA gene sequencing? Anaerobe 2022; 78:102640. [PMID: 36126828 DOI: 10.1016/j.anaerobe.2022.102640] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 08/13/2022] [Accepted: 09/07/2022] [Indexed: 11/01/2022]
Abstract
BACKGROUND Our large regional laboratory routinely provides a definitive identification (ID) for 800-1,200 anaerobic bacteria per annum that cause invasive human infections. An increasing number of isolates (i.e., 10-13%) recovered from clinical specimens from these cases were more unusual or rarely isolated genera and/or species (i.e., ≤5 individual cases/annum). METHODS VITEK® MS (MALDI-TOF MS)is done initially on all anaerobic bacteria, but rare isolates undergo in-house PCR/sequencing when proteomics provides a wrong ID or no results despite repeat testing. A clinical microbiologist in consultation with the Infectious Diseases service approves molecular analyses. This multi-year comparison (2014-19) of the performance of MALDI-TOF MS and 16S rRNA gene sequencing using the IDNS Smart Gene bacterial dataset shows both method's abilities to provide a genus-level and/or species-level ID for rare isolates. RESULTS 489 rare anaerobes were recovered from a variety of clinical specimens: 57% blood cultures, 19% other sterile fluids, 14% sterile tissues, 8% deep wounds/abscesses, and 2% prosthetic implants. 16S rRNA gene sequencing gave an accurate genus-vs. species level ID for 487/489 (99.6%) and 401/489 (82.0%) of isolates respectively. Accurate genus-vs species-level ID were obtained by MALDI-TOF MS for 269/489 (53.4%) and 187/489 (37.3%) of isolates respectively. MALDI-TOF MS gave wrong or no results for 35.1% of Gram-negative anaerobic cocci (GNAC), 62% of Gram-negative anaerobic bacilli (GNAB), 30.8% of Gram-positive anaerobic cocci (GPAC) and 46.3% of Gram-positive anaerobic bacilli (GPAB). Neither method gave an ID for one GNAB and one GPAC isolate. MALDI-TOF MS genus-level ID of GNAC and genus/species-level ID of GPAB improved during the study but its performance remained stable for genus- or species-level ID of other organism groups. CONCLUSIONS MALDI-TOF MS provides accurate ID for most common anaerobes, but molecular analyses need to be available for rare isolates. Large complex laboratories should have a workflow for sending rare isolates for 16S rRNA gene sequencing in invasive cases where a definitive ID is clinically required.
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Affiliation(s)
- D L Church
- Department of Pathology and Laboratory Medicine, Cummings School of Medicine, University of Calgary, 3330 Hospital Dr. NW, Calgary Alta. T2N 4B1, Canada; Department of Medicine, Cummings School of Medicine, University of Calgary, 3330 Hospital Dr. NW, Calgary Alta. T2N 4B1, Canada; Calgary Laboratory Services (now Alberta Precision Laboratories), Research Rd NW, Calgary Alberta T2L 2K8, 9-3535, Canada.
| | - T Griener
- Department of Pathology and Laboratory Medicine, Cummings School of Medicine, University of Calgary, 3330 Hospital Dr. NW, Calgary Alta. T2N 4B1, Canada; Calgary Laboratory Services (now Alberta Precision Laboratories), Research Rd NW, Calgary Alberta T2L 2K8, 9-3535, Canada
| | - D Gregson
- Department of Pathology and Laboratory Medicine, Cummings School of Medicine, University of Calgary, 3330 Hospital Dr. NW, Calgary Alta. T2N 4B1, Canada; Department of Medicine, Cummings School of Medicine, University of Calgary, 3330 Hospital Dr. NW, Calgary Alta. T2N 4B1, Canada; Calgary Laboratory Services (now Alberta Precision Laboratories), Research Rd NW, Calgary Alberta T2L 2K8, 9-3535, Canada
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Hirai J, Kuruma T, Sakanashi D, Kuge Y, Kishino T, Shibata Y, Asai N, Hagihara M, Mikamo H. Lemierre Syndrome Due to Dialister pneumosintes: A Case Report. Infect Drug Resist 2022; 15:2763-2771. [PMID: 35668853 PMCID: PMC9166905 DOI: 10.2147/idr.s359074] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Accepted: 05/20/2022] [Indexed: 11/23/2022] Open
Abstract
Although Dialister pneumosintes is a commensal microorganism of the oral cavity, it may sometimes cause severe systemic infections. We report a case of Lemierre syndrome (LS), which developed after D. pneumosintes infection, in a 73-year-old Japanese woman who was admitted to the hospital for throat pain, neck swelling, and fever for 3 days. She had a 3-month history of neglected dental caries, gingivitis, and periodontitis. Physical examination revealed right tonsillar erythema and swelling, and computed tomography (CT) showed peritonsillar and retropharyngeal abscesses. Ampicillin/sulbactam was promptly administered after collecting two sets of blood cultures. Surgical drainage for peritonsillar and retropharyngeal abscesses was also conducted on the second hospital day. Although only commensal oral microflora grew in the culture from the drained pus, Gram-negative bacilli were confirmed in the anaerobic blood cultures. Metronidazole was administered intravenously; however, the fever and neck swelling persisted. Repeat CT performed on the fifth hospital day revealed right internal jugular vein thrombosis, a known complication of tonsillitis and pharyngitis once the infection extends beyond the oropharynx. We diagnosed she had coexisting LS, and anticoagulant therapy was added to her treatment regimen. Her condition improved, and she was discharged after completing 3 weeks of antibiotics. Conventional methods failed to identify the isolated bacterium, and 16S rRNA sequencing ultimately identified it as D. pneumosintes. In a literature review of bacteremia due to D. pneumosintes, poor oral hygiene was considered a probable risk factor for invasive D. pneumosintes infection. We consider this to be the case in our patient who presented with dental caries, gingivitis, and periodontitis. In addition, all cases revealed that the 16S rRNA gene sequencing is useful for identifying this species. Although the diagnosis of LS by physical examination is difficult, physicians should always consider it as a potential complication of infections in the pharyngeal area.
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Affiliation(s)
- Jun Hirai
- Department of Clinical Infectious Diseases, Aichi Medical University Hospital, Nagakute, Aichi, 480-1195, Japan.,Department of Infection Control and Prevention, Aichi Medical University Hospital, Nagakute, Aichi, 480-1195, Japan
| | - Tessei Kuruma
- Department of Otolaryngology, Aichi Medical University Hospital, Nagakute, Aichi, 480-1195, Japan
| | - Daisuke Sakanashi
- Department of Infection Control and Prevention, Aichi Medical University Hospital, Nagakute, Aichi, 480-1195, Japan
| | - Yuji Kuge
- Department of Emergency and Critical Care Medicine, Aichi Medical University Hospital, Nagakute, Aichi, 480-1195, Japan
| | - Takaaki Kishino
- Department of Emergency and Critical Care Medicine, Aichi Medical University Hospital, Nagakute, Aichi, 480-1195, Japan
| | - Yuuichi Shibata
- Department of Pharmacy, Aichi Medical University Hospital, Nagakute, Aichi, 480-1195, Japan
| | - Nobuhiro Asai
- Department of Clinical Infectious Diseases, Aichi Medical University Hospital, Nagakute, Aichi, 480-1195, Japan.,Department of Infection Control and Prevention, Aichi Medical University Hospital, Nagakute, Aichi, 480-1195, Japan
| | - Mao Hagihara
- Department of Molecular Epidemiology and Biomedical Sciences, Aichi Medical University, Nagakute, Aichi, 480-1195, Japan
| | - Hiroshige Mikamo
- Department of Clinical Infectious Diseases, Aichi Medical University Hospital, Nagakute, Aichi, 480-1195, Japan.,Department of Infection Control and Prevention, Aichi Medical University Hospital, Nagakute, Aichi, 480-1195, Japan
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Wan X, Wang S, Wang M, Liu J, Zhang Y. Identification of Peptoniphilus harei From Blood Cultures in an Infected Aortic Aneurysm Patient: Case Report and Review Published Literature. Front Cell Infect Microbiol 2022; 11:755225. [PMID: 35004343 PMCID: PMC8730293 DOI: 10.3389/fcimb.2021.755225] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Accepted: 11/22/2021] [Indexed: 11/13/2022] Open
Abstract
Gram-positive anaerobic cocci (GPAC) are a commensal part of human flora but are also opportunistic pathogens. This is possibly the first study to report a case of Peptoniphilus harei bacteremia in an abdominal aortic aneurysm (AAA) patient. Matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF MS) failed to identify the isolate and molecular analysis confirmed it as P. harei. A comprehensive literature review revealed that P. harei is an emergent pathogen. This study serves as a reminder for practicing clinicians to include anaerobic blood cultures as part of their blood culture procedures; this is particularly important situations with a high level of suspicion of infection factors in some noninfectious diseases, as mentioned in this publication. Clinical microbiologists should be aware that the pathogenic potential of GPAC can be greatly underestimated leading to incorrect diagnosis on using only one method for pathogen identification. Upgradation and correction of the MALDI-TOF MS databases is recommended to provide reliable and rapid identification of GPAC at species level in medical diagnostic microbiology laboratories.
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Affiliation(s)
- Xue Wan
- Laboratory Department of Clinical Laboratory, The Second Hospital of Jilin University, Changchun, China
| | - Shuang Wang
- Department of Dermatology, The Second Hospital of Jilin University, Changchun, China
| | - Min Wang
- Department of General Surgery, The Second Hospital of Jilin University, Changchun, China
| | - Jinhua Liu
- Changchun Customs Technology Center, Changchun, China
| | - Yu Zhang
- Laboratory Department of Clinical Laboratory, The Second Hospital of Jilin University, Changchun, China
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Lagneaux AS, Hénard S, Diancourt L, Stein E, Perez P, Mathieu P, Alauzet C, Lozniewski A. Clostridium haemolyticum Infection: A Cause of Hemolytic Anemia in a Patient with Bone Marrow Necrosis. Microorganisms 2021; 9:microorganisms9081568. [PMID: 34442646 PMCID: PMC8399981 DOI: 10.3390/microorganisms9081568] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 07/17/2021] [Accepted: 07/18/2021] [Indexed: 11/30/2022] Open
Abstract
Clostridium haemolyticum is a sporulating Gram-positive anaerobic rod that is considered to be one of the most fastidious and oxygen-sensitive anaerobes. It is a well-known animal pathogen and the cause of bacillary hemoglobinuria primarily in cattle. To date, human infections caused by C. haemolyticum have been reported in three patients with malignant underlying diseases. We present herein the case of a 30-year-old obese woman with no significant past medical history who developed bacteremia caused by C. haemolyticum with massive intravascular hemolysis associated with bone marrow necrosis and acute renal failure. Because of subculture failure, the diagnosis was made on the basis of 16S rDNA sequencing and next-generation sequencing. The patient, who had been afebrile for 20 days after a 17-day-course of antibiotics, experienced a second bacteremic episode caused by C. haemolyticum. After having been successfully treated for 42 days with clindamycin and amoxicillin-clavulanic acid, the patient developed acute myeloid leukemia as a result of bone marrow regeneration. Although uncommon in humans, infections caused by C. haemolyticum are severe and should be considered in a febrile patient who has severe hemolytic anemia. This case also highlights the importance of using molecular techniques for the identification of this fastidious anaerobic organism.
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Affiliation(s)
- Anne Sophie Lagneaux
- Service de Microbiologie, CHRU de Nancy, 54500 Vandœuvre-lès-Nancy, France; (A.S.L.); (C.A.)
| | - Sandrine Hénard
- Service des Maladies Infectieuses et Tropicales, CHRU de Nancy, 54500 Vandœuvre-lès-Nancy, France;
| | - Laure Diancourt
- CNR Bactéries Anaérobies et Botulisme, Institut Pasteur, 75015 Paris, France;
| | - Emmanuelle Stein
- Laboratoire de Biologie Médicale, CH de Verdun–Saint Mihiel, 55100 Verdun, France; (E.S.); (P.M.)
| | - Pierre Perez
- Service de Médecine Intensive et Réanimation, Hôpitaux de Brabois, CHRU de Nancy, 54500 Vandœuvre-lès-Nancy, France;
| | - Pierre Mathieu
- Laboratoire de Biologie Médicale, CH de Verdun–Saint Mihiel, 55100 Verdun, France; (E.S.); (P.M.)
| | - Corentine Alauzet
- Service de Microbiologie, CHRU de Nancy, 54500 Vandœuvre-lès-Nancy, France; (A.S.L.); (C.A.)
- Laboratoire SIMPA Stress Immunité Pathogènes UR 7300, Service de Microbiologie, Université de Lorraine, CHRU de Nancy, 54500 Vandœuvre-lès-Nancy, France
| | - Alain Lozniewski
- Service de Microbiologie, CHRU de Nancy, 54500 Vandœuvre-lès-Nancy, France; (A.S.L.); (C.A.)
- Laboratoire SIMPA Stress Immunité Pathogènes UR 7300, Service de Microbiologie, Université de Lorraine, CHRU de Nancy, 54500 Vandœuvre-lès-Nancy, France
- Correspondence:
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Alcalá L, Marín M, Ruiz A, Quiroga L, Zamora-Cintas M, Fernández-Chico MA, Muñoz P, Rodríguez-Sánchez B. Identifying Anaerobic Bacteria Using MALDI-TOF Mass Spectrometry: A Four-Year Experience. Front Cell Infect Microbiol 2021; 11:521014. [PMID: 33968791 PMCID: PMC8101409 DOI: 10.3389/fcimb.2021.521014] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Accepted: 03/26/2021] [Indexed: 12/23/2022] Open
Abstract
Because of the special culture requirements of anaerobic bacteria, their low growth-rate and the difficulties to isolate them, MALDI-TOF MS has become a reliable identification tool for these microorganisms due to the little amount of bacteria required and the accuracy of MALDI-TOF MS identifications. In this study, the performance of MALDI-TOF MS for the identification of anaerobic isolates during a 4-year period is described. Biomass from colonies grown on Brucella agar was directly smeared onto the MALDI-TOF target plate and submitted to on-plate protein extraction with 1μl of 100% formic acid. Sequencing analysis of the 16S rRNA gene was used as a reference method for the identification of isolates unreliably or not identified by MALDI-TOF MS. Overall, 95.7% of the isolates were identified to the species level using the updated V6 database vs 93.8% with previous databases lacking some anaerobic species; 68.5% of the total were reliably identified with high-confidence score values (≥2.0) and 95.0% with low-confidence values (score value ≥1.7). Besides, no differences between Gram-positive and Gram-negative isolates were detected beyond a slight decrease of correct species assignment for gram positive cocci (94.1% vs 95.7% globally). MALDI-TOF MS has demonstrated its usefulness for the identification of anaerobes, with high correlation with phenotypic and conventional methods. Over the study period, only 2.1% of the isolates could not be reliably identified and required molecular methods for a final identification. Therefore, MALDI-TOF MS provided reliable identification of anaerobic isolates, allowing clinicians to streamline the most appropriate antibiotic therapy and manage patients accordingly.
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Affiliation(s)
- Luis Alcalá
- Clinical Microbiology and Infectious Diseases Department, Hospital General Universitario Gregorio Marañón, Madrid, Spain
- Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain
| | - Mercedes Marín
- Clinical Microbiology and Infectious Diseases Department, Hospital General Universitario Gregorio Marañón, Madrid, Spain
- Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain
- CIBER de Enfermedades Respiratorias (CIBERES CB06/06/0058), Madrid, Spain
| | - Adrián Ruiz
- Clinical Microbiology and Infectious Diseases Department, Hospital General Universitario Gregorio Marañón, Madrid, Spain
- Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain
| | - Lidia Quiroga
- Clinical Microbiology and Infectious Diseases Department, Hospital General Universitario Gregorio Marañón, Madrid, Spain
- Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain
| | - Maribel Zamora-Cintas
- Clinical Microbiology and Infectious Diseases Department, Hospital General Universitario Gregorio Marañón, Madrid, Spain
| | - María Antonia Fernández-Chico
- Clinical Microbiology and Infectious Diseases Department, Hospital General Universitario Gregorio Marañón, Madrid, Spain
| | - Patricia Muñoz
- Clinical Microbiology and Infectious Diseases Department, Hospital General Universitario Gregorio Marañón, Madrid, Spain
- Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain
- CIBER de Enfermedades Respiratorias (CIBERES CB06/06/0058), Madrid, Spain
- Medicine Department, School of Medicine, Universidad Complutense de Madrid, Madrid, Spain
| | - Belén Rodríguez-Sánchez
- Clinical Microbiology and Infectious Diseases Department, Hospital General Universitario Gregorio Marañón, Madrid, Spain
- Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain
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Propionibacterium/Cutibacterium species-related positive samples, identification, clinical and resistance features: a 10-year survey in a French hospital. Eur J Clin Microbiol Infect Dis 2020; 39:1357-1364. [PMID: 32125556 DOI: 10.1007/s10096-020-03852-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Accepted: 02/16/2020] [Indexed: 02/07/2023]
Abstract
A 10-year retrospective study of Propionibacterium/Cutibacterium-positive samples gathered from hospitalized patients was conducted at Nantes University hospital. A total of 2728 Propionibacterium/Cutibacterium-positive samples analyzed between 2007 and 2016 were included. Due to the implementation of MALDI-TOF identification in 2013, most non-Cutibacterium acnes isolates were identified a second time using this technology. Over that period, Cutibacterium acnes remained the most predominant species accounting for 91.5% (2497/2728) of the isolates, followed by Cutibacterium avidum (4.2%, 115/2728) and Cutibacterium granulosum (2.4%, 64/2728). Regarding the origin of samples, the orthopaedic department was the main Cutibacterium sample provider representing 51.9% (1415/2728) of all samples followed by the dermatology department (11.5%, 315/2728). Samples were recovered from various tissue locations: 31.5% (858/2728) from surgery-related samples such as shoulder, spine or hip replacement devices and 19.1% (520/2728) from skin samples. MALDI-TOF method revealed misidentification before 2013. Cutibacterium avidum was falsely identified as C. granulosum (n = 33). Consequently, MALDI-TOF technology using up-to-date databases should be preferred to biochemical identification in order to avoid biased species identification. Regarding antibiotic resistance, 14.7% (20/136) of C. acnes was resistant to erythromycin. 4.1% (41/1005) of C. acnes strains, 17.9% (12/67) of C. avidum strains and 3.6% (1/28) of C. granulosum strains were found resistant to clindamycin.
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10
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Toprak NU, Veloo ACM, Urban E, Wybo I, Jean-Pierre H, Morris T, Justesen US, Tripkovic V, Jeverica S, Soyletir G, Nagy E. Comparing identification of clinically relevant Prevotella species by VITEK MS and MALDI biotyper. Acta Microbiol Immunol Hung 2019; 67:6-13. [PMID: 31813262 DOI: 10.1556/030.66.2019.022] [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: 07/09/2019] [Accepted: 08/12/2019] [Indexed: 11/19/2022]
Abstract
In this multicenter study, we aimed to evaluate the performance of MALDI Biotyper and VITEK MS, for identification of Prevotella species. Three hundred and fourteen clinical isolates, collected in eight European countries between January 2014 and April 2016, were identified at the collecting sites by MALDI Biotyper (versions 3.0 and 3.1) and then reidentified by VITEK MS (version 3.0) in the central laboratory. 16S rRNA gene sequencing was used as a standard method. According to sequence analysis, the 314 Prevotella strains belonged to 19 species. MALDI Biotyper correctly identified 281 (89.5%) isolates to the species level and 33 (10.5%) only at the genus level. VITEK MS correctly identified 253 (80.6%) isolates at the species level and 276 (87.9%) isolates at the genus level. Thirty-three isolates belonging to P. bergensis, P. conceptionensis, P. corporis, P. histicola, and P. nanciensis, unavailable in the VITEK MS 3.0 database, were resulted in genus level or no identification. Six Prevotella strains, belonged to P. veroralis, P. timonensis, and P. conceptionensis not represented in the MALDI Biotyper system database, were misidentified at the genus level. In conclusion, both VITEK MS and MALDI Biotyper provided reliable and rapid identification. However, the permanent extension of the databases is needed.
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Affiliation(s)
- Nurver Ulger Toprak
- Department of Medical Microbiology, School of Medicine, Marmara University, Istanbul, Turkey
| | - Alida C. M. Veloo
- Department of Medical Microbiology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Edit Urban
- Institute of Clinical Microbiology, University of Szeged, Szeged, Hungary
| | - Ingrid Wybo
- Department of Microbiology and Infection Control, Universitair Ziekenhuis Brussel, Brussels, Belgium
| | - Helene Jean-Pierre
- Laboratoire de Bactériologie, Hôpital Arnaud de Villeneuve, Centre Hospitalier Régional Universitaire de Montpellier, Montpellier, France
| | - Trefor Morris
- UK Anaerobe Reference Unit, Public Health Wales Microbiology, Cardiff, UK
| | - Ulrik Stenz Justesen
- Department of Clinical Microbiology, Odense University Hospital, Odense, Denmark
| | - Vesna Tripkovic
- Department of Clinical and Molecular Microbiology, University Hospital Center, Zagreb, Croatia
| | - Samo Jeverica
- Faculty of Medicine, Institute of Microbiology and Immunology, University of Ljubljana, Ljubljana, Slovenia
| | - Guner Soyletir
- Department of Medical Microbiology, School of Medicine, Marmara University, Istanbul, Turkey
| | - Elisabeth Nagy
- Institute of Clinical Microbiology, University of Szeged, Szeged, Hungary
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11
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Kim D, Ji S, Kim JR, Kim M, Byun JH, Yum JH, Yong D, Lee K. Performance evaluation of a new matrix-assisted laser desorption/ionization time-of-flight mass spectrometry, ASTA MicroIDSys system, in bacterial identification against clinical isolates of anaerobic bacteria. Anaerobe 2019; 61:102131. [PMID: 31778809 DOI: 10.1016/j.anaerobe.2019.102131] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Revised: 11/15/2019] [Accepted: 11/23/2019] [Indexed: 12/21/2022]
Abstract
INTRODUCTION Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) has been introduced for bacterial identification. The ASTA MicroIDSys system (ASTA, Suwon, Korea) is a new MALDI-TOF MS system developed for species identification of microorganisms. We evaluated the performance of MicroIDSys against clinical isolates of anaerobic bacteria. MATERIAL AND METHODS A total of 370 non-duplicated clinical isolates of anaerobic bacteria were tested in this study. Bacterial identification with MicroIDSys was performed with a direct smear method, and measured spectra were analyzed using respective software. The results of MicroIDSys were compared with the results of Bruker Biotyper and 16S rRNA sequencing. RESULTS The overall agreement rates for the 370 clinical isolates (34 genera and 99 species) were 95.4% (353/370) at the genus level and 91.6% (n = 340) at the species level. Only 17 isolates were incorrectly identified at the genus level: five misidentifications and 12 unidentifications. The MicroIDSys system exhibited excellent performance in the identification of clinically relevant bacterial species. Most of the Bacteroides isolates (98.0%, 99/101) and all of the Clostridium difficile (100%, n = 11), Clostridium perfringens (100%, n = 10), Finegoldia magna (100%, n = 11), and Parvimonas micra (100%, n = 10) isolates were correctly identified at the species level. CONCLUSION The MicroIDSys system proved useful in the identification of anaerobic bacteria, especially clinically relevant species. This system could be of use in clinical microbiology laboratories as a primary tool for identifying anaerobic bacteria.
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Affiliation(s)
- Dokyun Kim
- Department of Laboratory Medicine and Research Institute of Bacterial Resistance, Yonsei University, College of Medicine, Seoul, South Korea
| | - Seungeun Ji
- Department of Laboratory Medicine and Research Institute of Bacterial Resistance, Yonsei University, College of Medicine, Seoul, South Korea
| | - Jung Rim Kim
- Department of Laboratory Medicine and Research Institute of Bacterial Resistance, Yonsei University, College of Medicine, Seoul, South Korea
| | - Myungsook Kim
- Department of Laboratory Medicine and Research Institute of Bacterial Resistance, Yonsei University, College of Medicine, Seoul, South Korea
| | - Jung-Hyun Byun
- Department of Laboratory Medicine and Research Institute of Bacterial Resistance, Yonsei University, College of Medicine, Seoul, South Korea
| | - Jong Hwa Yum
- Department of Clinical Laboratory Science, Dong-eui University, Busan, South Korea
| | - Dongeun Yong
- Department of Laboratory Medicine and Research Institute of Bacterial Resistance, Yonsei University, College of Medicine, Seoul, South Korea
| | - Kyungwon Lee
- Department of Laboratory Medicine and Research Institute of Bacterial Resistance, Yonsei University, College of Medicine, Seoul, South Korea.
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Kostrzewa M, Nagy E, Schröttner P, Pranada AB. How MALDI-TOF mass spectrometry can aid the diagnosis of hard-to-identify pathogenic bacteria - the rare and the unknown. Expert Rev Mol Diagn 2019; 19:667-682. [PMID: 31303071 DOI: 10.1080/14737159.2019.1643238] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Introduction: Ten years after its introduction into clinical microbiology, MALDI-TOF mass spectrometry has become the standard routine identification tool for bacteria in most laboratories. The technology has accelerated analyses and improved the quality of results. The greatest significance has been observed for bacteria that were challenging to be identified by traditional methods. Areas covered: We searched in existing literature (Pubmed) for reports how MALDI-TOF MS has contributed to identification of rare and unknown bacteria from different groups. We describe how this has improved the diagnostics in different groups of bacteria. Reference patterns for strains which yet cannot be assigned to a known species even enable the search for related bacteria in studies as well as in routine diagnostics. MALDI-TOF MS can help to discover and investigate new species and their clinical relevance. It is a powerful tool in the elucidation of the bacterial composition of complex microbiota in culturomics studies. Expert opinion: MALDI-TOF MS has improved the diagnosis of bacterial infections. It also enables knowledge generation for prospective diagnostics. The term 'hard-to-identify' might only be rarely attributed to bacteria in the future. Novel applications are being developed, e.g. subspecies differentiation, typing, and antibiotic resistance testing which may further contribute to improved microbial diagnostics.
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Affiliation(s)
- Markus Kostrzewa
- Bioanalytical Development, Bruker Daltonik GmbH , Bremen , Germany
| | - Elisabeth Nagy
- Institute of Clinical Microbiology, University of Szeged , Szeged , Hungary
| | - Percy Schröttner
- Institut für Medizinische Mikrobiologie und Hygiene, Technische Universität Dresden , Dresden , Germany
| | - Arthur B Pranada
- Department of Medical Microbiology, MVZ Dr. Eberhard & Partner Dortmund (ÜBAG) , Dortmund , Germany
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13
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Soeiro C, Quilici IR, Legoff A, Oussalah MB, Morin M, Alauzet C, Charmillon A. Hepatic abscess due to Dialister pneumosintes - A case report. Anaerobe 2019; 59:35-37. [PMID: 31103532 DOI: 10.1016/j.anaerobe.2019.05.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 05/12/2019] [Accepted: 05/13/2019] [Indexed: 02/06/2023]
Abstract
Dialister pneumosintes is an obligate anaerobic Gram-negative rod associated with infections of the oral cavity. We report on a previously healthy, 51-year-old woman who presented with a liver abscess caused by Dialister pneumosintes as a complication of a dental abscess. The microorganism was identified by using a broad-range bacterial 16S rRNA gene PCR in the liver exudate. The patient was cured after abscess drainage and 4-week antibiotic treatment. Our case highlights the importance of a good history and physical examination when taking care of patients admitted for pyogenic liver abscess.
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Affiliation(s)
- Cristina Soeiro
- Infectious Diseases Department, Centro Hospitalar do Porto, Largo do Prof. Abel Salazar, 4099-001, Porto, Portugal.
| | - Isabela Rosado Quilici
- Department of Hepato-Gastroenterology, CHRU Nancy, Nancy, France, Rue du Morvan, 54500, Vandœuvre-lès-Nancy, France.
| | - Antoine Legoff
- Infectious Diseases Department, CHRU Nancy, Nancy, France, Rue du Morvan, 54500, Vandœuvre-lès-Nancy, France.
| | - Mouni Bensenane Oussalah
- Department of Hepato-Gastroenterology, CHRU Nancy, Nancy, France, Rue du Morvan, 54500, Vandœuvre-lès-Nancy, France.
| | - Mathilde Morin
- Department of Hepato-Gastroenterology, CHRU Nancy, Nancy, France, Rue du Morvan, 54500, Vandœuvre-lès-Nancy, France.
| | - Corentine Alauzet
- Université de Lorraine, EA 7300 Stress Immunité Pathogènes SIMPA, F-54000, Nancy, France, Université de Lorraine, CHRU-Nancy, Laboratoire de Bactériologie, F-54000, France.
| | - Alexandre Charmillon
- Infectious Diseases Department, CHRU Nancy, Nancy, France, Rue du Morvan, 54500, Vandœuvre-lès-Nancy, France.
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Wang Y, Chen XF, Xie XL, Xiao M, Yang Y, Zhang G, Zhang JJ, Duan SM, Zhang Q, Zhang P, Tsui C, Xu YC. Evaluation of VITEK MS, Clin-ToF-II MS, Autof MS 1000 and VITEK 2 ANC card for identification of Bacteroides fragilis group isolates and antimicrobial susceptibilities of these isolates in a Chinese university hospital. JOURNAL OF MICROBIOLOGY, IMMUNOLOGY, AND INFECTION = WEI MIAN YU GAN RAN ZA ZHI 2019; 52:456-464. [PMID: 30772212 DOI: 10.1016/j.jmii.2018.12.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2018] [Revised: 12/18/2018] [Accepted: 12/25/2018] [Indexed: 11/19/2022]
Abstract
BACKGROUND AND PURPOSE Bacteroides fragilis group isolates are most frequently isolated anaerobic pathogens. This study aimed to evaluate the accuracy of VITEK MS, Clin-ToF-II MS, Autof MS 1000 and VITEK 2 ANC card on the identification of clinical B. fragilis group isolates, as well as to determine their antimicrobial susceptibilities. METHODS A total of 138 isolates of B. fragilis group isolates were identified with the three MALDI-TOF MS systems and VITEK 2 ANC cards. 16S rRNA gene sequencing was used as the reference identification method for comparison. Antimicrobial susceptibilities were determined by agar dilution method to 19 antimicrobial agents recommended by Clinical and Laboratory Standards Institute (CLSI). RESULTS Hundred thirty three isolates of Bacteroides spp. and 5 isolates of Parabacteroides spp. were identified by 16S rRNA sequencing. The rates of accurate identification at species level of VITEK MS, Clin-ToF-II MS, Autof MS 1000 and VITEK 2 ANC card were 94.2%, 94.2%, 98.6% and 94.9%, respectively, while that at genus level were 99.3%, 100%, 100% and 97.8%, respectively. Metronidazole and chloramphenicol were the most susceptible agents (99.3% and 92.8%, respectively), followed by meropenem, ertapenem, imipenem and piperacillin/tazobactam to which the susceptible rates ranged from 76.8% to 79.0%. The susceptible rates to carbapenems decreased 12.4-15.3% from 2010-2013 to 2014-2017. CONCLUSION All the four systems provided high accurate rate on the identification of B. fragilis group isolates. Metronidazole showed highest activity against these isolates. Attention should be paid to the higher resistant rates to carbapenems, clindamycin, moxifloxacin and tigecycline than the other countries.
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Affiliation(s)
- Yao Wang
- Department of Clinical Laboratory, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China; Beijing Key Laboratory for Mechanisms Research and Precision Diagnosis of Invasive Fungal Diseases, Beijing, China; Graduate School, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Xin-Fei Chen
- Department of Clinical Laboratory, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China; Beijing Key Laboratory for Mechanisms Research and Precision Diagnosis of Invasive Fungal Diseases, Beijing, China; Graduate School, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Xiu-Li Xie
- Department of Clinical Laboratory, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China; Beijing Key Laboratory for Mechanisms Research and Precision Diagnosis of Invasive Fungal Diseases, Beijing, China
| | - Meng Xiao
- Department of Clinical Laboratory, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China; Beijing Key Laboratory for Mechanisms Research and Precision Diagnosis of Invasive Fungal Diseases, Beijing, China
| | - Yang Yang
- Department of Clinical Laboratory, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China; Beijing Key Laboratory for Mechanisms Research and Precision Diagnosis of Invasive Fungal Diseases, Beijing, China
| | - Ge Zhang
- Department of Clinical Laboratory, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China; Beijing Key Laboratory for Mechanisms Research and Precision Diagnosis of Invasive Fungal Diseases, Beijing, China
| | - Jing-Jia Zhang
- Department of Clinical Laboratory, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China; Beijing Key Laboratory for Mechanisms Research and Precision Diagnosis of Invasive Fungal Diseases, Beijing, China
| | - Si-Meng Duan
- Department of Clinical Laboratory, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China; Beijing Key Laboratory for Mechanisms Research and Precision Diagnosis of Invasive Fungal Diseases, Beijing, China
| | - Qian Zhang
- Department of Clinical Laboratory, Qinghai Provincial People's Hospital, Xining, China
| | - Peng Zhang
- Department of Clinical Laboratory, Dalian Third People's Hospital, Dalian, China
| | - Clement Tsui
- Department of Pathology, Sidra Medicine, Doha, Qatar; Department of Pathology and Laboratory Medicine, Weill Cornell Medicine-Qatar, Doha, Qatar
| | - Ying-Chun Xu
- Department of Clinical Laboratory, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China; Beijing Key Laboratory for Mechanisms Research and Precision Diagnosis of Invasive Fungal Diseases, Beijing, China.
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Nagy E, Schuetz A. Advancing MALDI-TOF MS applications in anaerobic bacteriology. Anaerobe 2018; 54:189-190. [PMID: 30541685 DOI: 10.1016/j.anaerobe.2018.10.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Elisabeth Nagy
- Institute of Clinical Microbiology, University of Szeged, Szeged, Hungary.
| | - Audrey Schuetz
- Division of Clinical Microbiology, Department of Laboratory Medicine and Pathology, Mayo Clinic College of Medicine and Science, Rochester, MN, USA.
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