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Loperena-Barber M, Elizalde-Bielsa A, Salvador-Bescós M, Ruiz-Rodríguez P, Pellegrini JM, Renau-Mínguez C, Lancaster R, Zúñiga-Ripa A, Iriarte M, Bengoechea JA, Coscollá M, Gorvel JP, Moriyón I, Conde-Álvarez R. "Phylogenomic insights into brucellaceae: The Pseudochrobactrum algeriensis case". INFECTION, GENETICS AND EVOLUTION : JOURNAL OF MOLECULAR EPIDEMIOLOGY AND EVOLUTIONARY GENETICS IN INFECTIOUS DISEASES 2024; 123:105625. [PMID: 38906517 DOI: 10.1016/j.meegid.2024.105625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2024] [Revised: 06/17/2024] [Accepted: 06/17/2024] [Indexed: 06/23/2024]
Abstract
The genus Pseudochrobactrum encompasses free-living bacteria phylogenetically close to Ochrobactrum opportunistic pathogens and to Brucella, facultative intracellular parasites causing brucellosis, a worldwide-extended and grave zoonosis. Recently, Pseudochrobactrum strains were isolated from Brucella natural hosts on Brucella selective media, potentially causing diagnostic confusions. Strikingly, P. algeriensis was isolated from cattle lymph nodes, organs that are inimical to bacteria. Here, we analyse P. algeriensis potential virulence factors in comparison with Ochrobactrum and Brucella. Consistent with genomic analyses, Western-Blot analyses confirmed that P. algeriensis lacks the ability to synthesize the N-formylperosamine O-polysaccharide characteristic of the lipopolysaccharide (LPS) of smooth Brucella core species. However, unlike other Pseudochrobactrum but similar to some early diverging brucellae, P. algeriensis carries genes potentially synthetizing a rhamnose-based O-polysaccharide LPS. Lipid A analysis by MALDI-TOF demonstrated that P. algeriensis LPS bears a lipid A with a reduced pathogen-associated molecular pattern, a trait shared with Ochrobactrum and Brucella that is essential to generate a highly stable outer membrane and to delay immune activation. Also, although not able to multiply intracellularly in macrophages, the analysis of P. algeriensis cell lipid envelope revealed the presence of large amounts of cationic aminolipids, which may account for the extremely high resistance of P. algeriensis to bactericidal peptides and could favor colonization of mucosae and transient survival in Brucella hosts. However, two traits critical in Brucella pathogenicity are either significantly different (T4SS [VirB]) or absent (erythritol catabolic pathway) in P. algeriensis. This work shows that, while diverging in other characteristics, lipidic envelope features relevant in Brucella pathogenicity are conserved in Brucellaceae. The constant presence of these features strongly suggests that reinforcement of the envelope integrity as an adaptive advantage in soil was maintained in Brucella because of the similarity of some environmental challenges, such as the action of cationic peptide antibiotics and host defense peptides. This information adds knowledge about the evolution of Brucellaceae, and also underlines the taxonomical differences of the three genera compared.
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Affiliation(s)
- Maite Loperena-Barber
- Instituto de Investigación Sanitaria de Navarra (IdISNA) and Departamento de Microbiología y Parasitología, Universidad de Navarra, Pamplona, Spain
| | - Aitor Elizalde-Bielsa
- Instituto de Investigación Sanitaria de Navarra (IdISNA) and Departamento de Microbiología y Parasitología, Universidad de Navarra, Pamplona, Spain
| | - Miriam Salvador-Bescós
- Instituto de Investigación Sanitaria de Navarra (IdISNA) and Departamento de Microbiología y Parasitología, Universidad de Navarra, Pamplona, Spain
| | - Paula Ruiz-Rodríguez
- Institute for Integrative Systems Biology, Universidad de Valencia-CSIC, Valencia, Spain
| | | | - Chantal Renau-Mínguez
- Institute for Integrative Systems Biology, Universidad de Valencia-CSIC, Valencia, Spain
| | - Rebecca Lancaster
- Wellcome-Wolfson Institute for Experimental Medicine, Queen's University Belfast, Belfast, United Kingdom
| | - Amaia Zúñiga-Ripa
- Instituto de Investigación Sanitaria de Navarra (IdISNA) and Departamento de Microbiología y Parasitología, Universidad de Navarra, Pamplona, Spain
| | - Maite Iriarte
- Instituto de Investigación Sanitaria de Navarra (IdISNA) and Departamento de Microbiología y Parasitología, Universidad de Navarra, Pamplona, Spain
| | - Jose A Bengoechea
- Wellcome-Wolfson Institute for Experimental Medicine, Queen's University Belfast, Belfast, United Kingdom
| | - Mireia Coscollá
- Institute for Integrative Systems Biology, Universidad de Valencia-CSIC, Valencia, Spain
| | - Jean-Pierre Gorvel
- Centre d'Immunologie de Marseille-Luminy, CNRS, INSERM, Aix-Marseille University, Marseille, France
| | - Ignacio Moriyón
- Instituto de Investigación Sanitaria de Navarra (IdISNA) and Departamento de Microbiología y Parasitología, Universidad de Navarra, Pamplona, Spain
| | - Raquel Conde-Álvarez
- Instituto de Investigación Sanitaria de Navarra (IdISNA) and Departamento de Microbiología y Parasitología, Universidad de Navarra, Pamplona, Spain.
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Chao Z, Fayyaz A, Antony S. Ochrobactrum Anthropi; an Unusual Cause of Bacteremia and Pneumonia: A Case Report and a Brief Review of the Literature. Infect Disord Drug Targets 2024; 24:8-11. [PMID: 38757698 DOI: 10.2174/0118715265258415231018094653] [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: 04/17/2023] [Revised: 07/03/2023] [Accepted: 09/01/2023] [Indexed: 05/18/2024]
Abstract
Background: Ochrobactrum anthropi spp. is a non-enteric, aerobic gram-negative bacillus that has been reported to cause sepsis and occasionally bacteremia in both immunocompetent and immunocompromised hosts. This bacterium is capable of surviving in various habitats, but due to its affinity for aqueous environments, O. anthropi is hypothesized to have an affinity for indwelling plastic devices and other foreign bodies. Case Presentation: We report a case of a 66 y/o male with a history of polysubstance abuse disorder admitted for toxic metabolic encephalopathy and found to have bronchopneumonia and bacteremia secondary to O. anthropi infection resulting in sepsis and cardiopulmonary arrest. Discussion: Ochrobactrum spp. is an unusual pathogen of low virulence and has been noted to cause bacteremia and occasionally sepsis in both immunocompetent and immunosuppressed patients. Isolation of this pathogen in the appropriate setting should be considered a true pathogen and treated as such to avoid sequela of this infection. Conclusion: This case report and literature review suggest that Ochrobactrum anthropi appears more frequently as a pathogen in nosocomial infections than suggested in the literature. .
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Affiliation(s)
- Zefr Chao
- HCA Las Palmas/Del Sol Internal Medicine Program, El Paso, Texas, 79902, USA
| | - Anaam Fayyaz
- HCA Las Palmas/Del Sol Internal Medicine Program, El Paso, Texas, 79902, USA
| | - Suresh Antony
- HCA Las Palmas/Del Sol Internal Medicine Program, El Paso, Texas, 79902, USA
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Ryan MP, Pembroke JT. The Genus Ochrobactrum as Major Opportunistic Pathogens. Microorganisms 2020; 8:E1797. [PMID: 33207839 PMCID: PMC7696743 DOI: 10.3390/microorganisms8111797] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Revised: 11/10/2020] [Accepted: 11/13/2020] [Indexed: 12/20/2022] Open
Abstract
Ochrobactrum species are non-enteric, Gram-negative organisms that are closely related to the genus Brucella. Since the designation of the genus in 1988, several distinct species have now been characterised and implicated as opportunistic pathogens in multiple outbreaks. Here, we examine the genus, its members, diagnostic tools used for identification, data from recent Ochrobactrum whole genome sequencing and the pathogenicity associated with reported Ochrobactrum infections. This review identified 128 instances of Ochrobactrum spp. infections that have been discussed in the literature. These findings indicate that infection review programs should consider investigation of possible Ochrobactrum spp. outbreaks if these bacteria are clinically isolated in more than one patient and that Ochrobactrum spp. are more important pathogens than previously thought.
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Affiliation(s)
- Michael P. Ryan
- Department of Applied Sciences, Limerick Institute of Technology, Moylish V94 EC5T, Limerick, Ireland;
- Molecular Biochemistry Laboratory, Department of Chemical Sciences, School of Natural Sciences, Bernal Institute, University of Limerick, Limerick V94 T9PX2, Ireland
| | - J. Tony Pembroke
- Molecular Biochemistry Laboratory, Department of Chemical Sciences, School of Natural Sciences, Bernal Institute, University of Limerick, Limerick V94 T9PX2, Ireland
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Caroleo B, Malandrino P, Liberto A, Condorelli D, Patanè F, Maiese A, Casella F, Geraci D, Ricci P, Di Mizio G. Catheter-related Bloodstream Infections: A Root Cause Analysis in a Series of Simultaneous Ochrobactrum anthropi Infections. Curr Pharm Biotechnol 2019; 20:609-614. [DOI: 10.2174/1389201020666190405182025] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Revised: 10/28/2018] [Accepted: 03/20/2019] [Indexed: 11/22/2022]
Abstract
Objective:Catheter-related bloodstream infections (CRBSIs) pathogenesis is complex and multifactorial mostly due to cutaneous microorganisms migration through the catheter insertion site and catheter tip colonization. Ochrobactrum anthropi is a gram-negative bacterium belonging to the Brucellaceae and related infections are especially observed in immunocompromised patients.Methods:Therefore, O. anthropi infection prevention and surveillance are relevant issues for healthcare system and risk management, in order to improve healthcare quality and patient safety. Four cases of anthropi-related CRBSIs occurring in immunodepressed patients under chemotherapy treatment are reported and the possible prevention and surveillance strategies are analyzed.Results:In the reported cases, all infections occurred almost simultaneously in the Oncology Unit, leading to hypothesize an identical infection source. Subsequently, a clinical audit was performed in order to investigate infection origin and implement prevention and control strategies. Clinical audit allowed to identify the hand hygiene defects as the primary source of the infections, responsible for catheter flushing solution contamination.Conclusion:The aim of this study is to reveal how through correct root cause analysis and clinical audit, several measures could be undertaken in order to promote the prevention of the CRBSIs risk
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Affiliation(s)
- Benedetto Caroleo
- Department of Medical Science, and Elderly Operative Unit, Mater Domini Hospital, University of Catanzaro, Catanzaro, Italy
| | - Pasquale Malandrino
- Department of Medical, Surgical Sciences and Advanced Technologies "G.F. Ingrassia", University of Catania – A.O.U. "Policlinico V. Emanuele", Catania, Italy
| | - Aldo Liberto
- Department of Medical, Surgical Sciences and Advanced Technologies "G.F. Ingrassia", University of Catania – A.O.U. "Policlinico V. Emanuele", Catania, Italy
| | - Dario Condorelli
- Department of Medical, Surgical Sciences and Advanced Technologies "G.F. Ingrassia", University of Catania – A.O.U. "Policlinico V. Emanuele", Catania, Italy
| | - Federico Patanè
- Department of Medical, Surgical Sciences and Advanced Technologies "G.F. Ingrassia", University of Catania – A.O.U. "Policlinico V. Emanuele", Catania, Italy
| | - Aniello Maiese
- Department of Anatomical, Histological, Forensic and Orthopaedic Sciences, Sapienza University of Rome, Rome, Italy
| | - Filomena Casella
- Legal Medicine, Department of Law, Economy and Sociology University of Catanzaro, Catanzaro, Italy
| | - Diego Geraci
- Department of Medical, Surgical Sciences and Advanced Technologies "G.F. Ingrassia", University of Catania – A.O.U. "Policlinico V. Emanuele", Catania, Italy
| | - Pietrantonio Ricci
- Institute of Legal Medicine, University Magna Graecia of Catanzaro, Catanzaro, Italy
| | - Giulio Di Mizio
- Legal Medicine, Department of Law, Economy and Sociology University of Catanzaro, Catanzaro, Italy
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Poroyko V, Meng F, Meliton A, Afonyushkin T, Ulanov A, Semenyuk E, Latif O, Tesic V, Birukova AA, Birukov KG. Alterations of lung microbiota in a mouse model of LPS-induced lung injury. Am J Physiol Lung Cell Mol Physiol 2015; 309:L76-83. [PMID: 25957290 DOI: 10.1152/ajplung.00061.2014] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2014] [Accepted: 05/12/2015] [Indexed: 02/06/2023] Open
Abstract
Acute lung injury (ALI) and the more severe acute respiratory distress syndrome are common responses to a variety of infectious and noninfectious insults. We used a mouse model of ALI induced by intratracheal administration of sterile bacterial wall lipopolysaccharide (LPS) to investigate the changes in innate lung microbiota and study microbial community reaction to lung inflammation and barrier dysfunction induced by endotoxin insult. One group of C57BL/6J mice received LPS via intratracheal injection (n = 6), and another received sterile water (n = 7). Bronchoalveolar lavage (BAL) was performed at 72 h after treatment. Bacterial DNA was extracted and used for qPCR and 16S rRNA gene-tag (V3-V4) sequencing (Illumina). The bacterial load in BAL from ALI mice was increased fivefold (P = 0.03). The community complexity remained unchanged (Simpson index, P = 0.7); the Shannon diversity index indicated the increase of community evenness in response to ALI (P = 0.07). Principal coordinate analysis and analysis of similarity (ANOSIM) test (P = 0.005) revealed a significant difference between microbiota of control and ALI groups. Bacteria from families Xanthomonadaceae and Brucellaceae increased their abundance in the ALI group as determined by Metastats test (P < 0.02). In concordance with the 16s-tag data, Stenotrohomonas maltophilia (Xanthomonadaceae) and Ochrobactrum anthropi (Brucellaceae) were isolated from lungs of mice from both groups. Metabolic profiling of BAL detected the presence of bacterial substrates suitable for both isolates. Additionally, microbiota from LPS-treated mice intensified IL-6-induced lung inflammation in naive mice. We conclude that the morbid transformation of ALI microbiota was attributed to the set of inborn opportunistic pathogens thriving in the environment of inflamed lung, rather than the external infectious agents.
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Affiliation(s)
- Valeriy Poroyko
- Department of Pediatrics, The University of Chicago, Chicago, Illinois;
| | - Fanyong Meng
- Section of Pulmonary and Critical Medicine, Lung Injury Center, Department of Medicine, The University of Chicago, Chicago, Illinois
| | - Angelo Meliton
- Section of Pulmonary and Critical Medicine, Lung Injury Center, Department of Medicine, The University of Chicago, Chicago, Illinois
| | - Taras Afonyushkin
- Section of Pulmonary and Critical Medicine, Lung Injury Center, Department of Medicine, The University of Chicago, Chicago, Illinois
| | - Alexander Ulanov
- Roy J. Carver Biotechnology Center, University of Illinois at Urbana-Champaign
| | - Ekaterina Semenyuk
- Department of Microbiology and Immunology, Loyola University Chicago, Stritch School of Medicine, Maywood, Illinois
| | - Omar Latif
- Department of Medicine, The University of Chicago, Chicago, Illinois; and
| | - Vera Tesic
- Department of Pathology, University of Chicago, Chicago, Illinois
| | - Anna A Birukova
- Section of Pulmonary and Critical Medicine, Lung Injury Center, Department of Medicine, The University of Chicago, Chicago, Illinois
| | - Konstantin G Birukov
- Section of Pulmonary and Critical Medicine, Lung Injury Center, Department of Medicine, The University of Chicago, Chicago, Illinois
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Abstract
The clinical picture of Ochrobactrum anthropi infection is not well described because the infection is rare in humans and identification of the pathogen is difficult. We present a case of O. anthropi bacteremia that was initially misidentified as Ralstonia paucula and later identified by 16S rRNA sequencing and recA analysis.
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7
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Recurrent Ochrobactrum anthropi, Treatment, and Clinical Relevance. INFECTIOUS DISEASES IN CLINICAL PRACTICE 2010. [DOI: 10.1097/ipc.0b013e3181d5e13c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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8
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Romano S, Aujoulat F, Jumas-Bilak E, Masnou A, Jeannot JL, Falsen E, Marchandin H, Teyssier C. Multilocus sequence typing supports the hypothesis that Ochrobactrum anthropi displays a human-associated subpopulation. BMC Microbiol 2009; 9:267. [PMID: 20021660 PMCID: PMC2810298 DOI: 10.1186/1471-2180-9-267] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2009] [Accepted: 12/18/2009] [Indexed: 11/25/2022] Open
Abstract
Background Ochrobactrum anthropi is a versatile bacterial species with strains living in very diverse habitats. It is increasingly recognized as opportunistic pathogen in hospitalized patients. The population biology of the species particularly with regard to the characteristics of the human isolates is being investigated. To address this issue, we proposed a polyphasic approach consisting in Multi-Locus Sequence Typing (MLST), multi-locus phylogeny, genomic-based fingerprinting by pulsed-field gel electrophoresis (PFGE) and antibiotyping. Results We tested a population of 70 O. anthropi clinical (n = 43) and environmental (n = 24) isolates as well as the type strain O. anthropi ATCC49188T and 2 strains of Ochrobactrum lupini and Ochrobactrum cytisi isolated from plant nodules. A Multi-Locus Sequence Typing (MLST) scheme for O. anthropi is proposed here for the first time. It was based on 7 genes (3490 nucleotides) evolving mostly by neutral mutations. The MLST approach suggested an epidemic population structure. A major clonal complex corresponded to a human-associated lineage since it exclusively contained clinical isolates. Genomic fingerprinting separated isolates displaying the same sequence type but it did not detect a population structure that could be related to the origin of the strains. None of the molecular method allowed the definition of particular lineages associated to the host-bacteria relationship (carriage, colonisation or infection). Antibiotyping was the least discriminative method. Conclusion The results reveal a human-associated subpopulation in our collection of strains. The emergence of this clonal complex was probably not driven by the antibiotic selective pressure. Therefore, we hypothesise that the versatile species O. anthropi could be considered as a human-specialized opportunistic pathogen.
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Affiliation(s)
- Sara Romano
- Faculté de Pharmacie, Laboratoire de Bactériologie-Virologie, Université Montpellier 1, 34093 Montpellier Cedex 5, France.
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The differential interaction of Brucella and ochrobactrum with innate immunity reveals traits related to the evolution of stealthy pathogens. PLoS One 2009; 4:e5893. [PMID: 19529776 PMCID: PMC2691993 DOI: 10.1371/journal.pone.0005893] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2009] [Accepted: 05/19/2009] [Indexed: 12/13/2022] Open
Abstract
Background During evolution, innate immunity has been tuned to recognize pathogen-associated molecular patterns. However, some α-Proteobacteria are stealthy intracellular pathogens not readily detected by this system. Brucella members follow this strategy and are highly virulent, but other Brucellaceae like Ochrobactrum are rhizosphere inhabitants and only opportunistic pathogens. To gain insight into the emergence of the stealthy strategy, we compared these two phylogenetically close but biologically divergent bacteria. Methodology/Principal Findings In contrast to Brucella abortus, Ochrobactrum anthropi did not replicate within professional and non-professional phagocytes and, whereas neutrophils had a limited action on B. abortus, they were essential to control O. anthropi infections. O. anthropi triggered proinflammatory responses markedly lower than Salmonella enterica but higher than B. abortus. In macrophages and dendritic cells, the corresponding lipopolysaccharides reproduced these grades of activation, and binding of O. anthropi lipopolysaccharide to the TLR4 co-receptor MD-2 and NF-κB induction laid between those of B. abortus and enteric bacteria lipopolysaccharides. These differences correlate with reported variations in lipopolysaccharide core sugars, sensitivity to bactericidal peptides and outer membrane permeability. Conclusions/Significance The results suggest that Brucellaceae ancestors carried molecules not readily recognized by innate immunity, so that non-drastic variations led to the emergence of stealthy intracellular parasites. They also suggest that some critical envelope properties, like selective permeability, are profoundly altered upon modification of pathogen-associated molecular patterns, and that this represents a further adaptation to the host. It is proposed that this adaptive trend is relevant in other intracellular α-Proteobacteria like Bartonella, Rickettsia, Anaplasma, Ehrlichia and Wolbachia.
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Duran R, Vatansever U, Acunaş B, Başaran UN. Ochrobactrum anthropi bacteremia in a preterm infant with meconium peritonitis. Int J Infect Dis 2008; 13:e61-3. [PMID: 18842433 DOI: 10.1016/j.ijid.2008.06.027] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2008] [Revised: 06/11/2008] [Accepted: 06/28/2008] [Indexed: 11/25/2022] Open
Abstract
Ochrobactrum anthropi is a non-fermenting gram-negative rod that was identified as a pathogenic microorganism during the past decade. O. anthropi is extensively distributed in the environment, and has been found in hospital and environmental water sources. O. anthropi infection is rare in childhood. We report a case of O. anthropi bacteremia in a preterm infant with a peritoneal lavage catheter and meconium peritonitis.
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Affiliation(s)
- Ridvan Duran
- Trakya University Faculty of Medicine, Department of Pediatrics, Edirne, Turkey.
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11
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Thoma B, Straube E, Scholz HC, Al Dahouk S, Zöller L, Pfeffer M, Neubauer H, Tomaso H. Identification and antimicrobial susceptibilities of Ochrobactrum spp. Int J Med Microbiol 2008; 299:209-20. [PMID: 18755630 DOI: 10.1016/j.ijmm.2008.06.009] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2008] [Revised: 06/10/2008] [Accepted: 06/17/2008] [Indexed: 11/16/2022] Open
Abstract
Ochrobactrum (O.) anthropi is an opportunistic emerging pathogen closely related to the genus Brucella. Identification and differentiation from brucellae and other Ochrobactrum spp. using routine biochemical test systems is not reliable due to the high phenotypic similarity. In this study, antibiotic susceptibilities of 103 Ochrobactrum isolates were determined using Etest for 19 clinically relevant antimicrobial agents. Ochrobactrum strains were highly resistant to beta-lactam antibiotics, susceptible to ciprofloxacin, and 97.1% were susceptible to trimethoprim/sulfamethoxazole. It was also demonstrated that biochemical reaction profiles of the API and BD Phoenix 100 systems for identifying Ochrobactrum isolates can only be used on the genus level. Our in vitro data suggest that combinations of antimicrobial agents including ciprofloxacin and/or trimethoprim/sulfamethoxazole may be useful for empirical treatment of Ochrobactrum infections.
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Affiliation(s)
- Bryan Thoma
- Bundeswehr Institute of Microbiology, Munich, Germany.
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12
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Chiang CC, Tsai YY, Lin JM, Chen WL. Chronic endophthalmitis after cataract surgery secondary to Ochrobactrum anthropi. Eye (Lond) 2008; 23:1237-8. [DOI: 10.1038/eye.2008.137] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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13
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Vaidya SA, Citron DM, Fine MB, Murakami G, Goldstein EJC. Pelvic abscess due to Ochrobactrum intermedium [corrected] in an immunocompetent host: case report and review of the literature. J Clin Microbiol 2006; 44:1184-6. [PMID: 16517927 PMCID: PMC1393105 DOI: 10.1128/jcm.44.3.1184-1186.2006] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Ochrobactrum intermedium [corrected] infection is rare in humans and is generally associated with immunocompromised hosts with indwelling foreign bodies. We report a case of pelvic abscess with O. intermedium [corrected] after a routine appendectomy in an immunocompetent patient and review the literature on O. intermedium [corrected] infection in patients with normal immune function.
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Affiliation(s)
- Sagar A Vaidya
- Medical Scientist Training Program, University of California, Los Angeles, USA
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14
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Teyssier C, Marchandin H, Jean-Pierre H, Diego I, Darbas H, Jeannot JL, Gouby A, Jumas-Bilak E. Molecular and phenotypic features for identification of the opportunistic pathogens Ochrobactrum spp. J Med Microbiol 2005; 54:945-953. [PMID: 16157548 DOI: 10.1099/jmm.0.46116-0] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Among the six species characterized within the genus Ochrobactrum, Ochrobactrum anthropi and Ochrobactrum intermedium are currently reported as opportunistic pathogens in humans. Since the species identification is mainly based on 16S rDNA analysis, the aim of this study was to search for other characteristics useful for Ochrobactrum species discrimination. Ribotyping, morphological and biochemical analyses, and antimicrobial susceptibility testing were performed for a panel of 35 clinical isolates, first identified to the species level using 16S rDNA sequencing. Type and reference strains of five Ochrobactrum species were comparatively analysed. Commercial identification systems such as API 20NE and VITEK 2 were tested for their ability to identify Ochrobactrum anthropi and to detect other members of the genus Ochrobactrum. An improved protocol for the identification of Ochrobactrum spp. by routine medical microbiology practices is proposed: isolation of a non-fastidious non-fermenting oxidase-positive Gram-negative rod resistant to all beta-lactams except imipenem indicates the genus Ochrobactrum, and the API 20NE system confirms the genus identification for most strains, whereas the VITEK 2 system using ID-GNB cards was less powerful. Urease activity, the mucoidy of the colonies, growth at 45 degrees C on tryptic soy agar, and susceptibility to colistin, tobramycin and netilmicin should be considered as differential characteristics for identification of O. anthropi and O. intermedium to the species level. However, definitive identification depends on genotyping methods.
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Affiliation(s)
- Corinne Teyssier
- Laboratoire de bactériologie, faculté de pharmacie, 15, avenue Charles Flahault, 34093 Montpellier Cedex 5, France 2Laboratoire de bactériologie, hôpital Arnaud de Villeneuve, 34295 Montpellier Cedex 5, France 3Laboratoire de bactériologie, hôpital Carremeau, 30060 îmes, France
| | - Hélène Marchandin
- Laboratoire de bactériologie, faculté de pharmacie, 15, avenue Charles Flahault, 34093 Montpellier Cedex 5, France 2Laboratoire de bactériologie, hôpital Arnaud de Villeneuve, 34295 Montpellier Cedex 5, France 3Laboratoire de bactériologie, hôpital Carremeau, 30060 îmes, France
| | - Hélène Jean-Pierre
- Laboratoire de bactériologie, faculté de pharmacie, 15, avenue Charles Flahault, 34093 Montpellier Cedex 5, France 2Laboratoire de bactériologie, hôpital Arnaud de Villeneuve, 34295 Montpellier Cedex 5, France 3Laboratoire de bactériologie, hôpital Carremeau, 30060 îmes, France
| | - Isabelle Diego
- Laboratoire de bactériologie, faculté de pharmacie, 15, avenue Charles Flahault, 34093 Montpellier Cedex 5, France 2Laboratoire de bactériologie, hôpital Arnaud de Villeneuve, 34295 Montpellier Cedex 5, France 3Laboratoire de bactériologie, hôpital Carremeau, 30060 îmes, France
| | - Hélène Darbas
- Laboratoire de bactériologie, faculté de pharmacie, 15, avenue Charles Flahault, 34093 Montpellier Cedex 5, France 2Laboratoire de bactériologie, hôpital Arnaud de Villeneuve, 34295 Montpellier Cedex 5, France 3Laboratoire de bactériologie, hôpital Carremeau, 30060 îmes, France
| | - Jean-Luc Jeannot
- Laboratoire de bactériologie, faculté de pharmacie, 15, avenue Charles Flahault, 34093 Montpellier Cedex 5, France 2Laboratoire de bactériologie, hôpital Arnaud de Villeneuve, 34295 Montpellier Cedex 5, France 3Laboratoire de bactériologie, hôpital Carremeau, 30060 îmes, France
| | - Anne Gouby
- Laboratoire de bactériologie, faculté de pharmacie, 15, avenue Charles Flahault, 34093 Montpellier Cedex 5, France 2Laboratoire de bactériologie, hôpital Arnaud de Villeneuve, 34295 Montpellier Cedex 5, France 3Laboratoire de bactériologie, hôpital Carremeau, 30060 îmes, France
| | - Estelle Jumas-Bilak
- Laboratoire de bactériologie, faculté de pharmacie, 15, avenue Charles Flahault, 34093 Montpellier Cedex 5, France 2Laboratoire de bactériologie, hôpital Arnaud de Villeneuve, 34295 Montpellier Cedex 5, France 3Laboratoire de bactériologie, hôpital Carremeau, 30060 îmes, France
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15
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von Eiff C, Jansen B, Kohnen W, Becker K. Infections associated with medical devices: pathogenesis, management and prophylaxis. Drugs 2005; 65:179-214. [PMID: 15631541 DOI: 10.2165/00003495-200565020-00003] [Citation(s) in RCA: 262] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The insertion or implantation of foreign bodies has become an indispensable part in almost all fields of medicine. However, medical devices are associated with a definitive risk of bacterial and fungal infections. Foreign body-related infections (FBRIs), particularly catheter-related infections, significantly contribute to the increasing problem of nosocomial infections. While a variety of micro-organisms may be involved as pathogens, staphylococci account for the majority of FBRIs. Their ability to adhere to materials and to promote formation of a biofilm is the most important feature of their pathogenicity. This biofilm on the surface of colonised foreign bodies is regarded as the biological correlative for the clinical experience with FBRI, that is, that the host defence mechanisms often seem to be unable to handle the infection and, in particular, to eliminate the micro-organisms from the infected device. Since antibacterial chemotherapy is also frequently not able to cure these infections despite the use of antibacterials with proven in vitro activity, removal of implanted devices is often inevitable and has been standard clinical practice. However, in specific circumstances, such as infections of implanted medical devices with coagulase-negative staphylococci, a trial of salvage of the device may be justified. All FBRIs should be treated with antibacterials to which the pathogens have been shown to be susceptible. In addition to systemic antibacterial therapy, an intraluminal application of antibacterial agents, referred to as the 'antibiotic-lock' technique, should be considered to circumvent the need for removal, especially in patients with implanted long-term catheters. To reduce the incidence of intravascular catheter-related bloodstream infections, specific guidelines comprising both technological and nontechnological strategies for prevention have been established. Quality assurance, continuing education, choice of the catheter insertion site, hand hygiene and aseptic techniques are aspects of particular interest. Furthermore, all steps in the pathogenesis of biofilm formation may represent targets against which prevention strategies may be directed. Alteration of the foreign body material surface may lead to a change in specific and nonspecific interactions with micro-organisms and, thus, to a reduced microbial adherence. Medical devices made out of a material that would be antiadhesive or at least colonisation resistant would be the most suitable candidates to avoid colonisation and subsequent infection. Another concept for the prevention of FBRIs involves the impregnation of devices with various substances such as antibacterials, antiseptics and/or metals. Finally, further studies are needed to translate the knowledge on the mechanisms of biofilm formation into applicable therapeutic and preventive strategies.
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Affiliation(s)
- Christof von Eiff
- Institute of Medical Microbiology, University of Münster Hospital and Clinics, Domagkstrasse 10, 48149 Münster, Germany.
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16
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Romero Gómez MP, Peinado Esteban AM, Sobrino Daza JA, Sáez Nieto JA, Alvarez D, Peña García P. Prosthetic mitral valve endocarditis due to Ochrobactrum anthropi: case report. J Clin Microbiol 2004; 42:3371-3. [PMID: 15243121 PMCID: PMC446288 DOI: 10.1128/jcm.42.7.3371-3373.2004] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
We describe a case of infective endocarditis in a prosthetic mitral valve due to Ochrobactrum anthropi. Although O. anthropi is an emerging pathogen in immunocompromised patients, infections with the bacterium have very rarely been documented in healthy hosts, and endocarditis is rare. To our knowledge, only two cases of O. anthropi endocarditis have been reported in the medical literature.
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Affiliation(s)
- M P Romero Gómez
- Department of Microbiology and Parasitology, La Paz University Hospital Paseo de la Castellana, 261, 28046 Madrid, Spain.
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17
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Teyssier C, Jumas-Bilak E, Marchandin H, Jean-Pierre H, Jeannot JL, Dusart G, Foulongne V, Siméon de Buochberg M. [Species identification and molecular epidemiology of bacteria belonging to Ochrobactrum genus]. PATHOLOGIE-BIOLOGIE 2003; 51:5-12. [PMID: 12628286 DOI: 10.1016/s0369-8114(02)00361-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Two species of medical interest belong to the genus Ochrobactrum, Ochrobactrum anthropi and Ochrobactrum intermedium. They are members of the microbiota of soil and an increasing number of works report the isolation of O. anthropi from clinical specimen, especially from immunocompromised patients and nosocomial infection. Involving of each species in human infection is poorly estimated due to unclear differential phenotypic characters. We performed 16S rDNA sequencing for identification of 20 clinical isolates of Ochrobactrum sp. to the species level. Then, we studied the phenotype of each isolate especially, morphology, culture onto different media and at different temperatures, biochemical characters and antibiotics resistance pattern. Colony morphology after growth onto Trypticase-Soy and McConkey agar, culture at 45 degrees C onto Trypticase-Soja agar, presence of urease, and netilmycin, tobramycin and colistin resistance allowed identification of species. Ribotyping using HindIII and EcoRI gave a supplementary criterion for species determination but did not allow typing at the infra-species level. In contrast, Pulsed-Field Gel Electrophoresis showed high degree of polymorphism between strains and proved the clonality of certain isolates. Thus, this method could be a useful tool for molecular epidemiology of Ochrobactrum infections.
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Affiliation(s)
- C Teyssier
- Laboratoire de bactériologie, faculté de pharmacie, 15, avenue Charles-Flahault, 34093 cedex 5, Montpellier, France
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18
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Stiakaki E, Galanakis E, Samonis G, Christidou A, Maraka S, Tselentis Y, Kalmanti M. Ochrobactrum anthropi bacteremia in pediatric oncology patients. Pediatr Infect Dis J 2002; 21:72-4. [PMID: 11791106 DOI: 10.1097/00006454-200201000-00018] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Ochrobactrum anthropi is an emerging pathogen in immunocompromised hosts, particularly in patients with indwelling catheters. We report the characteristics of 14 O. anthropi bacteremic episodes in 11 children with Hickman-type central catheters. Children presented with fever and nonspecific clinical manifestations. Bacteremia was successfully treated with antibiotics, but catheter removal was necessary to achieve cure in four cases.
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Affiliation(s)
- Eftichia Stiakaki
- Department of Pediatric Hematology-Oncology, University of Crete, Heraklion, Greece
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19
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Nadjar D, Labia R, Cerceau C, Bizet C, Philippon A, Arlet G. Molecular characterization of chromosomal class C beta-lactamase and its regulatory gene in Ochrobactrum anthropi. Antimicrob Agents Chemother 2001; 45:2324-30. [PMID: 11451692 PMCID: PMC90649 DOI: 10.1128/aac.45.8.2324-2330.2001] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Ochrobactrum anthropi, formerly known as CDC group Vd, is an oxidase-producing, gram-negative, obligately aerobic, non-lactose-fermenting bacillus of low virulence that occasionally causes human infections. It is highly resistant to all beta-lactams except imipenem. A clinical isolate, SLO74, and six reference strains were tested. MICs of penicillins, aztreonam, and most cephalosporins tested, including cefotaxime and ceftazidime, were >128 microg/ml and of cefepime were 64 to >128 microg/ml. Clavulanic acid was ineffective and tazobactam had a weak effect in association with piperacillin. Two genes, ampR and ampC, were cloned by inserting restriction fragments of genomic DNA from the clinical strain O. anthropi SLO74 into pBK-CMV to give the recombinant plasmid pBK-OA1. The pattern of resistance to beta-lactams of this clone was similar to that of the parental strain, except for its resistance to cefepime (MIC, 0.5 ,micro/ml). The deduced amino acid sequence of the AmpC beta-lactamase (pI, 8.9) was only 41 to 52% identical to the sequence of other chromosomally encoded and plasmid-encoded class C beta-lactamases. The kinetic properties of this beta-lactamase were typical for this class of beta-lactamases. Upstream from the ampC gene, the ampR gene encodes a protein with a sequence that is 46 to 62% identical to those of other AmpR proteins and with an amino-terminal DNA-binding domain typical of transcriptional activators of the Lys-R family. The deduced amino acid sequences of the ampC genes of the six reference strains were 96 to 99% identical to the sequence of the clinical strain. The beta-lactamase characterized from strain SLO74 was named OCH-1 (gene, bla(OCH-I)).
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Affiliation(s)
- D Nadjar
- Laboratoire de Bactériologie, Hôpital Tenon, UFR Saint-Antoine, Paris, France
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20
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Velasco J, Bengoechea JA, Brandenburg K, Lindner B, Seydel U, González D, Zähringer U, Moreno E, Moriyón I. Brucella abortus and its closest phylogenetic relative, Ochrobactrum spp., differ in outer membrane permeability and cationic peptide resistance. Infect Immun 2000; 68:3210-8. [PMID: 10816465 PMCID: PMC97564 DOI: 10.1128/iai.68.6.3210-3218.2000] [Citation(s) in RCA: 72] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The outer membrane (OM) of the intracellular parasite Brucella abortus is permeable to hydrophobic probes and resistant to destabilization by polycationic peptides and EDTA. The significance of these unusual properties was investigated in a comparative study with the opportunistic pathogens of the genus Ochrobactrum, the closest known Brucella relative. Ochrobactrum spp. OMs were impermeable to hydrophobic probes and sensitive to polymyxin B but resistant to EDTA. These properties were traced to lipopolysaccharide (LPS) because (i) insertion of B. abortus LPS, but not of Escherichia coli LPS, into Ochrobactrum OM increased its permeability; (ii) permeability and polymyxin B binding measured with LPS aggregates paralleled the results with live bacteria; and (iii) the predicted intermediate results were obtained with B. abortus-Ochrobactrum anthropi and E. coli-O. anthropi LPS hybrid aggregates. Although Ochrobactrum was sensitive to polymyxin, self-promoted uptake and bacterial lysis occurred without OM morphological changes, suggesting an unusual OM structural rigidity. Ochrobactrum and B. abortus LPSs showed no differences in phosphate, qualitative fatty acid composition, or acyl chain fluidity. However, Ochrobactrum LPS, but not B. abortus LPS, contained galacturonic acid. B. abortus and Ochrobactrum smooth LPS aggregates had similar size and zeta potential (-12 to -15 mV). Upon saturation with polymyxin, zeta potential became positive (1 mV) for Ochrobactrum smooth LPS while remaining negative (-5 mV) for B. abortus smooth LPS, suggesting hindered access to inner targets. These results show that although Ochrobactrum and Brucella share a basic OM pattern, subtle modifications in LPS core cause markedly different OM properties, possibly reflecting the adaptive evolution of B. abortus to pathogenicity.
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Affiliation(s)
- J Velasco
- Departamento de Microbiología, Universidad de Navarra, Pamplona, Spain
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21
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Abstract
Although newer tunneled dialysis catheters offer improved capacity for blood flow and efficiency of dialysis, catheter-associated bacteremia remains an extremely important complication of this access strategy. This is a report of a case of catheter-associated bacteremia with Ochrobactrum anthropi, a water-borne gram-negative rod with an unusual pattern of antibiotic resistance. Given the organism's hydrophilic property and the frequency of catheter use in debilitated individuals with end-stage renal disease, Ochrobactrum anthropi infection should be considered in the differential diagnosis of a hemodialysis patient with unexplained fever.
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Affiliation(s)
- G M Chertow
- Divisions of Nephrology, Moffitt-Long Hospitals and UCSF-Mount Zion Medical Center, Department of Medicine, University of California, San Francisco, San Francisco, CA 94143, USA.
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22
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Peltroche-Llacsahuanga H, Brandenburg V, Riehl J, Haase G. Ochrobactrum anthropi peritonitis in a CAPD patient. J Infect 2000; 40:299-301. [PMID: 10908034 DOI: 10.1053/jinf.2000.0648] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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23
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Mahmood MS, Sarwari AR, Khan MA, Sophie Z, Khan E, Sami S. Infective endocarditis and septic embolization with Ochrobactrum anthropi: case report and review of literature. J Infect 2000; 40:287-90. [PMID: 10908026 DOI: 10.1053/jinf.2000.0644] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Ochrobactrum anthropi, previously known as CDC group Vd, is an aerobic, Gram-negative bacillus of low virulence that occasionally causes human infection. We describe a case of infective endocarditis with O. anthropi complicated by septic embolization. A review of all the literature reported cases of O. anthropi infection is presented and categorized into 'Central line related', 'Transplant related' and "Other pyogenic infections". Mortality appears to be related to the underlying disease state, rather than the organism.
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Affiliation(s)
- M S Mahmood
- Department of Medicine, The Aga Khan University, Karachi, Pakistan
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24
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Esteban J, Ortiz A, Rollán E, Reyero-López A, Soriano F. Peritonitis due to Ochrobactrum anthropi in a patient undergoing continuous ambulatory peritoneal dialysis. J Infect 2000; 40:205-6. [PMID: 10841106 DOI: 10.1016/s0163-4453(00)80023-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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25
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Delière E, Vu-Thien H, Lévy V, Barquins S, Schlegel L, Bouvet A. Epidemiological investigation of Ochrobactrum anthropi strains isolated from a haematology unit. J Hosp Infect 2000; 44:173-8. [PMID: 10706799 DOI: 10.1053/jhin.1999.0690] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Ochrobactrum anthropi is an oxidase-producing gram-negative bacillus preferring aqueous environments. It is an opportunist of low pathogenicity with a wide and unpredictable antibiotic resistance. We observed bacteraemia caused by this organism in two immunocompromized patients hospitalized in the same haematology unit and catheter-associated sepsis was recognized within two days. Another isolate was obtained from the stools of a third patient of the same unit. Environmental investigations recovered an isolate from a tap-water sample of the unit. Pulsed-field gel electrophoresis analysis of these four isolates and two others isolates previously found in the same ward, showed identical restriction patterns for the two blood isolates and confirmed that the two bacteraemia were epidemiologically related.
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Affiliation(s)
- E Delière
- Service de Microbiologie, Hôtel Dieu, Université Paris VI., Paris, 75004, France
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26
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Blecker Shelly D, Mortensen JE. A pediatric case report and review of infections caused by Ochrobactrum anthropi. ACTA ACUST UNITED AC 2000. [DOI: 10.1016/s0196-4399(00)88662-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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27
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Babic I, Fischer-Le Saux M, Giraud E, Boemare N. Occurrence of natural dixenic associations between the symbiont Photorhabdus luminescens and bacteria related to Ochrobactrum spp. in tropical entomopathogenic Heterorhabditis spp. (Nematoda, Rhabditida). MICROBIOLOGY (READING, ENGLAND) 2000; 146 ( Pt 3):709-718. [PMID: 10746775 DOI: 10.1099/00221287-146-3-709] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Bacteria naturally associated with the symbiont Photorhabdus luminescens subsp. akhurstii were isolated from the entomopathogenic nematode Heterorhabditis indica. Bacterial isolates distinct from P. luminescens subsp. akhurstii were obtained from 33% of the samples. Fourteen bacterial isolates, from nematodes collected from three different Caribbean islands, were characterized by conventional phenotypic tests, restriction fragment length polymorphism and sequence analyses of PCR-amplified 16S rRNA genes (16S rDNAs). Isolates were grouped into three genotypes, each one being associated with one Caribbean island. Phenotypic characteristics and 16S rDNA analysis showed that the Photorhabdus-associated bacteria were closely related to Ochrobactrum anthropi for the group from Guadeloupe, and to Ochrobactrum intermedium for the two groups from the Dominican Republic and Puerto Rico. No pathogenicity of the Ochrobactrum spp. to the insects Galleria mellonella and Spodoptera littoralis (Lepidoptera) was detected. Since Ochrobactrum spp. are considered as human opportunist pathogens, the mass production of entomopathogenic nematodes for biological control requires strict vigilance.
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Affiliation(s)
- Isabelle Babic
- Laboratoire de Pathologie Comparée, INRA-CNRS, IFR 56 'Biologie cellulaire et Processus infectieux', Université Montpellier II, CP 101, Place Eugène Bataillon, 34095 Montpellier Cedex 5, France1
| | - Marion Fischer-Le Saux
- Laboratoire de Pathologie Comparée, INRA-CNRS, IFR 56 'Biologie cellulaire et Processus infectieux', Université Montpellier II, CP 101, Place Eugène Bataillon, 34095 Montpellier Cedex 5, France1
| | - Eric Giraud
- Laboratoire des Symbioses Tropicales et Méditerranéennes, CIRAD-IRD-INRA-Agro-Montpellier, BP 5035, F-34032 Montpellier Cedex 1, France2
| | - Noël Boemare
- Laboratoire de Pathologie Comparée, INRA-CNRS, IFR 56 'Biologie cellulaire et Processus infectieux', Université Montpellier II, CP 101, Place Eugène Bataillon, 34095 Montpellier Cedex 5, France1
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28
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Mastroianni A, Cancellieri C, Montini G. Ochrobactrum anthropi bacteremia: case report and review of the literature. Clin Microbiol Infect 1999; 5:570-573. [PMID: 11851711 DOI: 10.1111/j.1469-0691.1999.tb00437.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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29
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Saavedra J, Garrido C, Folgueira D, Torres MJ, Ramos JT. Ochrobactrum anthropi bacteremia associated with a catheter in an immunocompromised child and review of the pediatric literature. Pediatr Infect Dis J 1999; 18:658-60. [PMID: 10440451 DOI: 10.1097/00006454-199907000-00023] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- J Saavedra
- Department of Pediatrics, Hospital Materno-Infantil Doce de Octubre, Madrid, Spain
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30
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Abstract
Ochrobactrum Anthropi (O. anthropi ), formerly known as Achromobacter CDC group Vd, is a gram-negative bacillus that is aerobic, oxidase producing, and nonlactose fermenting. This organism has been found in environmental and hospital water sources and has pathogenic potential in humans. Most reports in the literature of O. anthropi bacteremia are associated with intravenous line infections. We describe a case of bacteremia with O. anthropi in a 33-month-old boy with acute osteomyelitis. O. anthropi bacteremia also has been reported in immunocompromised hosts. Rarely, O. anthropi has been a cause of soft tissue or bone infection.
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Affiliation(s)
- N Jelveh
- Infectious Disease Division, Winthrop-University Hospital, Mineola, NY 11501, USA
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31
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