1
|
McLaughlin J, Burnham CAD, McDowell A. MALDI-TOF mass spectrometry misidentification of Cutibacterium namnetense and Cutibacterium modestum: Implications for multiplex PCR phylotyping of Cutibacterium acnes. Anaerobe 2024; 88:102874. [PMID: 38848934 DOI: 10.1016/j.anaerobe.2024.102874] [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: 03/01/2024] [Revised: 05/27/2024] [Accepted: 06/03/2024] [Indexed: 06/09/2024]
Abstract
Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) can misidentify Cutibacterium namnetense and Cutibacterium modestum as Cutibacterium acnes. We now describe how such MALDI-TOF MS misidentification explains previous reports of C. acnes isolates that could not be characterised using a multiplex PCR phylotyping assay.
Collapse
Affiliation(s)
- Joseph McLaughlin
- Personalised Medicine Centre, School of Medicine, Ulster University, Londonderry, UK
| | - Carey-Ann D Burnham
- Division of Laboratory and Genomic Medicine, Department of Pathology, Washington University School of Medicine, St Louis, MO, USA
| | - Andrew McDowell
- Personalised Medicine Centre, School of Medicine, Ulster University, Londonderry, UK; Nutrition Innovation Centre for Food and Health (NICHE), School of Biomedical Sciences, Ulster University, Coleraine, UK.
| |
Collapse
|
2
|
Corvec S, Fayoux E, Tessier E, Guillouzouic A, Moraru C, Lecomte R, Bémer P, Ruffier d'Epenoux L. Cutibacterium namnetense osteosynthetic cervical spine infections: experience with two cases. Eur J Clin Microbiol Infect Dis 2024; 43:395-399. [PMID: 38093085 DOI: 10.1007/s10096-023-04731-5] [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: 07/18/2023] [Accepted: 11/28/2023] [Indexed: 01/28/2024]
Abstract
We report two uncommon cases of osteosynthetic cervical spine infection. Clinical patient features, microbiological strain characteristics, diagnostic methods, and treatment were analyzed. Both patients were male, and one had risk factors for surgical site infection. During surgery, perioperative samples were positive yielding an anaerobic microorganism identified as Cutibacterium namnetense by MALDI-TOF MS and confirmed by 16S rRNA/gyrB genes sequencing. All isolates were fully susceptible. C. namnetense osteosynthetic cervical spine infections are rare. Both cases were early surgical site infections. Bruker MALDI-TOF MS appears to be an excellent tool for rapid and accurate identification. Amoxicillin seems to be an option for the treatment.
Collapse
Affiliation(s)
- S Corvec
- Institut de Biologie des Hôpitaux de Nantes, Service de Bactériologie Et Des Contrôles Microbiologiques, CHU Nantes, Nantes Université, 9 Quai Moncousu, 44093, Cedex 01, Nantes, France.
- Nantes Study Group Members of CRIOGO (Centre de Référence Des Infections Ostéo-Articulaires du Grand Ouest), Nantes, France.
- Université de Nantes, CHU Nantes, INSERM, INCIT, U1302 F- 44000, Nantes, France.
| | - E Fayoux
- Institut de Biologie des Hôpitaux de Nantes, Service de Bactériologie Et Des Contrôles Microbiologiques, CHU Nantes, Nantes Université, 9 Quai Moncousu, 44093, Cedex 01, Nantes, France
| | - E Tessier
- Institut de Biologie des Hôpitaux de Nantes, Service de Bactériologie Et Des Contrôles Microbiologiques, CHU Nantes, Nantes Université, 9 Quai Moncousu, 44093, Cedex 01, Nantes, France
| | - A Guillouzouic
- Institut de Biologie des Hôpitaux de Nantes, Service de Bactériologie Et Des Contrôles Microbiologiques, CHU Nantes, Nantes Université, 9 Quai Moncousu, 44093, Cedex 01, Nantes, France
| | - C Moraru
- CHU Nantes, Service de Neuro-Chirurgie, Nantes, France
| | - R Lecomte
- CHU Nantes, Service Des Maladies Infectieuses, Nantes Université, Nantes, France
| | - P Bémer
- Institut de Biologie des Hôpitaux de Nantes, Service de Bactériologie Et Des Contrôles Microbiologiques, CHU Nantes, Nantes Université, 9 Quai Moncousu, 44093, Cedex 01, Nantes, France
- Nantes Study Group Members of CRIOGO (Centre de Référence Des Infections Ostéo-Articulaires du Grand Ouest), Nantes, France
| | - L Ruffier d'Epenoux
- Institut de Biologie des Hôpitaux de Nantes, Service de Bactériologie Et Des Contrôles Microbiologiques, CHU Nantes, Nantes Université, 9 Quai Moncousu, 44093, Cedex 01, Nantes, France
- Nantes Study Group Members of CRIOGO (Centre de Référence Des Infections Ostéo-Articulaires du Grand Ouest), Nantes, France
- Université de Nantes, CHU Nantes, INSERM, INCIT, U1302 F- 44000, Nantes, France
| |
Collapse
|
3
|
Unravelling the eco-specificity and pathophysiological properties of Cutibacterium species in the light of recent taxonomic changes. Anaerobe 2021; 71:102411. [PMID: 34265438 DOI: 10.1016/j.anaerobe.2021.102411] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 06/23/2021] [Accepted: 06/27/2021] [Indexed: 11/22/2022]
Abstract
In 2016, a new species name Cutibacterium acnes was coined for the well-documented species, Propionibacterium acnes, one of the most successful and clinically important skin commensals. The nomenclatural changes were brought about through creation of the genus Cutibacterium, when a group of propionibacteria isolates from the skin were transferred from the genus Propionibacterium and placed in the phylum Actinobacteria. Almost simultaneously, the discovery of two novel species of Cutibacterium occurred and the proposal of three subspecies of C. acnes were reported. These dramatic changes that occurred in a long-established taxon made it challenging for the non-specialist to correlate the huge volume of hitherto published work with current findings. In this review, we aim to correlate the eco-specificity and pathophysiological properties of these newly circumscribed taxa. We envisage that this information will shed light on the pathogenic potential of new isolates and enable better assessment of their clinical importance in the foreseeable future. Currently, five species are recognized within the genus: Cutibacterium acnes, Cutibacterium avidum, Cutibacterium granulosum, Cutibacterium modestum (previously, "Propionibacterium humerusii"), and Cutibacterium namnetense. These reside in different niches reflecting their uniqueness in their genetic makeup. Their pathogenicity includes acne inflammation, sarcoidosis, progressive macular hypomelanosis, prostate cancer, and infections (bone, lumbar disc, and heart). This is also the case for the three newly described subspecies of C. acnes, which are C. acnes subspecies acnes (C. acnes type I), subspecies defendens (C. acnes type II), and subspecies elongatum (C. acnes type III). C. acnes subspecies acnes is related to inflamed acne and sarcoidosis, while subspecies defendens to prostate cancer and subspecies elongatum to progressive macular hypomelanosis. Because the current nomenclature is based upon polyphasic analyses of the biochemical and pathogenic characteristics and comparative genomics, it provides a sound basis studying the pathophysiological roles of these species.
Collapse
|
4
|
Munson E, Carroll KC. Summary of Novel Bacterial Isolates Derived from Human Clinical Specimens and Nomenclature Revisions Published in 2018 and 2019. J Clin Microbiol 2021; 59:e01309-20. [PMID: 32967902 PMCID: PMC8111135 DOI: 10.1128/jcm.01309-20] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Knowledge of novel prokaryotic taxon discovery and nomenclature revisions is of importance to clinical microbiology laboratory practice, infectious disease epidemiology, and studies of microbial pathogenesis. Relative to bacterial isolates derived from human clinical specimens, we present an in-depth summary of novel taxonomic designations and revisions to prokaryotic taxonomy that were published in 2018 and 2019. Included are several changes pertinent to former designations of or within Propionibacterium spp., Corynebacterium spp., Clostridium spp., Mycoplasma spp., Methylobacterium spp., and Enterobacteriaceae Future efforts to ascertain clinical relevance for many of these changes may be augmented by a document development committee that has been appointed by the Clinical and Laboratory Standards Institute.
Collapse
Affiliation(s)
- Erik Munson
- College of Health Sciences, Marquette University, Milwaukee, Wisconsin, USA
| | - Karen C Carroll
- Division of Medical Microbiology, Department of Pathology, the Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| |
Collapse
|