1
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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] [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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2
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Adefila WO, Osei I, Lamin KM, Wutor BM, Olawale YA, Molfa M, Barjo O, Omotosho M, Salaudeen R, Mackenzie G. Ochrobactrum anthropi sepsis in a 15-month-old child: A case report. Clin Case Rep 2024; 12:e9042. [PMID: 38845804 PMCID: PMC11154795 DOI: 10.1002/ccr3.9042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Revised: 04/27/2024] [Accepted: 05/20/2024] [Indexed: 06/09/2024] Open
Abstract
Key Clinical Message Ochrobactrum anthropi (O. anthropi), a rare opportunistic pathogen, caused sepsis in a malnourished 15-month-old African child. Early detection and appropriate antibiotics led to full recovery, highlighting the importance of robust surveillance for emerging pathogens in vulnerable populations. Abstract While rarely causing infections, O. anthropi, a non-fermenting, obligately aerobic, flagellated gram-negative bacillus, demonstrates oxidase positivity and indole negativity. Traditionally, Ochrobactrum spp is considered a low threat due to its environmental abundance and mild virulence. It is, however, a multidrug-resistant bacteria known for causing opportunistic infections in humans. O. anthropi is typically associated with catheter-related bloodstream infections. The first documented case was in 1998; most cases have been reported in developed countries. We present a case of O. anthropi sepsis in a malnourished child in sub-Saharan Africa. We report a case involving a 15-month-old African female who presented with symptoms and signs of protein-energy malnutrition and sepsis. The blood culture revealed O.anthropi. We treated the child with the empirical first-line antibiotics per the national guidelines, intravenous ampicillin and gentamicin for a week, and the child fully recovered. This report describes a rare case of O. anthropi sepsis with malnutrition in an African female child. O. anthropi is an emerging pathogen causing opportunistic infections in both immunocompetent and immunocompromised patients. We report that early bacterial detection, appropriate antibiotic susceptibility and antimicrobial management based on local antibiogram data may be essential for excellent patient outcomes. Additionally, we recommend more robust surveillance to detect such rare emerging pathogens.
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Affiliation(s)
| | - Isaac Osei
- Medical Research Council Unit The Gambia at London School of Hygiene & Tropical MedicineFajaraThe Gambia
- Faculty of Infectious and Tropical DiseasesLondon School of Hygiene & Tropical MedicineLondonUK
| | - Keita Modou Lamin
- Medical Research Council Unit The Gambia at London School of Hygiene & Tropical MedicineFajaraThe Gambia
| | - Baleng Mahama Wutor
- Medical Research Council Unit The Gambia at London School of Hygiene & Tropical MedicineFajaraThe Gambia
| | - Yusuf Abdulsalam Olawale
- Medical Research Council Unit The Gambia at London School of Hygiene & Tropical MedicineFajaraThe Gambia
| | - Minteh Molfa
- Medical Research Council Unit The Gambia at London School of Hygiene & Tropical MedicineFajaraThe Gambia
| | - Ousman Barjo
- Medical Research Council Unit The Gambia at London School of Hygiene & Tropical MedicineFajaraThe Gambia
| | - Mayowa Omotosho
- Medical Research Council Unit The Gambia at London School of Hygiene & Tropical MedicineFajaraThe Gambia
| | - Rasheed Salaudeen
- Medical Research Council Unit The Gambia at London School of Hygiene & Tropical MedicineFajaraThe Gambia
| | - Grant Mackenzie
- Medical Research Council Unit The Gambia at London School of Hygiene & Tropical MedicineFajaraThe Gambia
- Faculty of Infectious and Tropical DiseasesLondon School of Hygiene & Tropical MedicineLondonUK
- Murdoch Children's Research InstituteMelbourneAustralia
- Department of PaediatricsUniversity of MelbourneMelbourneAustralia
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3
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Park JH, Kim TS, Park H, Kang CK. Delay in the diagnosis of Brucella abortus bacteremia in a nonendemic country: a case report. BMC Infect Dis 2024; 24:489. [PMID: 38741035 PMCID: PMC11089730 DOI: 10.1186/s12879-024-09377-y] [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: 12/22/2023] [Accepted: 05/03/2024] [Indexed: 05/16/2024] Open
Abstract
BACKGROUND It is challenging to diagnose brucellosis in nonendemic regions because it is a nonspecific febrile disease. The accurate identification of Brucella spp. in clinical microbiology laboratories (CMLs) continues to pose difficulties. Most reports of misidentification are for B. melitensis, and we report a rare case of misidentified B. abortus. CASE PRESENTATION A 67-year-old man visited an outpatient clinic complaining of fatigue, fever, and weight loss. The patient had a history of slaughtering cows with brucellosis one year prior, and his Brucella antibody tests were negative twice. After blood culture, the administration of doxycycline and rifampin was initiated. The patient was hospitalized due to a positive blood culture. Gram-negative coccobacilli were detected in aerobic blood culture bottles, but the CML's lack of experience with Brucella prevented appropriate further testing. Inaccurate identification results were obtained for a GN ID card of VITEK 2 (bioMérieux, USA) and matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS) using a MALDI Biotyper (Bruker, Germany). The strain showed 100.0% identity with Brucella spp. according to 16S rRNA sequencing. MALDI-TOF MS peaks were reanalyzed using the CDC MicrobeNet database to determine Brucella spp. (score value: 2.023). The patient was discharged after nine days of hospitalization and improved after maintaining only doxycycline for six weeks. The isolate was also identified as Brucella abortus by genomic evidence. CONCLUSION Automated identification instruments and MALDI-TOF MS are widely used to identify bacteria in CMLs, but there are limitations in accurately identifying Brucella spp. It is important for CMLs to be aware of the possibility of brucellosis through communication with clinicians. Performing an analysis with an additional well-curated MALDI-TOF MS database such as Bruker security-relevant (SR) database or CDC MicrobeNet database is helpful for quickly identifying the genus Brucella.
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Affiliation(s)
- Jae Hyeon Park
- Department of Laboratory Medicine, Seoul National University Hospital, Seoul, Republic of Korea
| | - Taek Soo Kim
- Department of Laboratory Medicine, Seoul National University Hospital, Seoul, Republic of Korea
- Department of Laboratory Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Hyunwoong Park
- Department of Laboratory Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
- Department of Laboratory Medicine, Seoul National University Boramae Medical Center, Seoul, Republic of Korea
| | - Chang Kyung Kang
- Department of Internal Medicine, Seoul National University College of Medicine, 101 Daehak-Ro, Jongno-Gu, Seoul, 03080, Republic of Korea.
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4
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Lázaro-Antón L, Veiga-da-Cunha M, Elizalde-Bielsa A, Chevalier N, Conde-Álvarez R, Iriarte M, Letesson JJ, Moriyón I, Van Schaftingen E, Zúñiga-Ripa A. A novel gluconeogenic route enables efficient use of erythritol in zoonotic Brucella. Front Vet Sci 2024; 11:1328293. [PMID: 38601913 PMCID: PMC11005471 DOI: 10.3389/fvets.2024.1328293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Accepted: 01/29/2024] [Indexed: 04/12/2024] Open
Abstract
Brucellosis is a worldwide extended zoonosis caused by pathogens of the genus Brucella. While most B. abortus, B. melitensis, and B. suis biovars grow slowly in complex media, they multiply intensely in livestock genitals and placenta indicating high metabolic capacities. Mutant analyses in vitro and in infection models emphasize that erythritol (abundant in placenta and genitals) is a preferred substrate of brucellae, and suggest hexoses, pentoses, and gluconeogenic substrates use in host cells. While Brucella sugar and erythritol catabolic pathways are known, growth on 3-4 carbon substrates persists in Fbp- and GlpX-deleted mutants, the canonical gluconeogenic fructose 1,6-bisphosphate (F1,6bP) bisphosphatases. Exploiting the prototrophic and fast-growing properties of B. suis biovar 5, we show that gluconeogenesis requires fructose-bisphosphate aldolase (Fba); the existence of a novel broad substrate bisphosphatase (Bbp) active on sedoheptulose 1,7-bisphosphate (S1,7bP), F1,6bP, and other phosphorylated substrates; that Brucella Fbp unexpectedly acts on S1,7bP and F1,6bP; and that, while active in B. abortus and B. melitensis, GlpX is disabled in B. suis biovar 5. Thus, two Fba-dependent reactions (dihydroxyacetone-phosphate + glyceraldehyde 3-phosphate ⇌ F1,6bP; and dihydroxyacetone-phosphate + erythrose 4-phosphate ⇌ S1,7bP) can, respectively, yield fructose 6-phosphate and sedoheptulose 7-phosphate for classical gluconeogenesis and the Pentose Phosphate Shunt (PPS), the latter reaction opening a new gluconeogenic route. Since erythritol generates the PPS-intermediate erythrose 4-phosphate, and the Fba/Fbp-Bbp route predicts sedoheptulose 7-phosphate generation from erythrose 4-phosphate, we re-examined the erythritol connections with PPS. Growth on erythritol required transaldolase or the Fba/Fbp-Bbp pathway, strongly suggesting that Fba/Fbp-Bbp works as a PPS entry for both erythritol and gluconeogenic substrates in Brucella. We propose that, by increasing erythritol channeling into PPS through these peculiar routes, brucellae proliferate in livestock genitals and placenta in the high numbers that cause abortion and infertility, and make brucellosis highly contagious. These findings could be the basis for developing attenuated brucellosis vaccines safer in pregnant animals.
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Affiliation(s)
- Leticia Lázaro-Antón
- Departamento de Microbiología y Parasitología – IDISNA, Universidad de Navarra, Pamplona, Spain
| | - Maria Veiga-da-Cunha
- Groupe de Recherches Metaboliques, De Duve Institute, UCLouvain, Brussels, Belgium
| | - Aitor Elizalde-Bielsa
- Departamento de Microbiología y Parasitología – IDISNA, Universidad de Navarra, Pamplona, Spain
| | - Nathalie Chevalier
- Groupe de Recherches Metaboliques, De Duve Institute, UCLouvain, Brussels, Belgium
| | - Raquel Conde-Álvarez
- Departamento de Microbiología y Parasitología – IDISNA, Universidad de Navarra, Pamplona, Spain
| | - Maite Iriarte
- Departamento de Microbiología y Parasitología – IDISNA, Universidad de Navarra, Pamplona, Spain
| | | | - Ignacio Moriyón
- Departamento de Microbiología y Parasitología – IDISNA, Universidad de Navarra, Pamplona, Spain
| | | | - Amaia Zúñiga-Ripa
- Departamento de Microbiología y Parasitología – IDISNA, Universidad de Navarra, Pamplona, Spain
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5
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Riedel R, Commichau FM, Benndorf D, Hertel R, Holzer K, Hoelzle LE, Mardoukhi MSY, Noack LE, Martienssen M. Biodegradation of selected aminophosphonates by the bacterial isolate Ochrobactrum sp. BTU1. Microbiol Res 2024; 280:127600. [PMID: 38211497 DOI: 10.1016/j.micres.2024.127600] [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: 09/04/2023] [Revised: 12/19/2023] [Accepted: 01/02/2024] [Indexed: 01/13/2024]
Abstract
Aminophosphonates, like glyphosate (GS) or metal chelators such as ethylenediaminetetra(methylenephosphonic acid) (EDTMP), are released on a large scale worldwide. Here, we have characterized a bacterial strain capable of degrading synthetic aminophosphonates. The strain was isolated from LC/MS standard solution. Genome sequencing indicated that the strain belongs to the genus Ochrobactrum. Whole-genome classification using pyANI software to compute a pairwise ANI and other metrics between Brucella assemblies and Ochrobactrum contigs revealed that the bacterial strain is designated as Ochrobactrum sp. BTU1. Degradation batch tests with Ochrobactrum sp. BTU1 and the selected aminophosphonates GS, EDTMP, aminomethylphosphonic acid (AMPA), iminodi(methylene-phosphonic) (IDMP) and ethylaminobis(methylenephosphonic) acid (EABMP) showed that the strain can use all phosphonates as sole phosphorus source during phosphorus starvation. The highest growth rate was achieved with AMPA, while EDTMP and GS were least supportive for growth. Proteome analysis revealed that GS degradation is promoted by C-P lyase via the sarcosine pathway, i.e., initial cleavage at the C-P bond. We also identified C-P lyase to be responsible for degradation of EDTMP, EABMP, IDMP and AMPA. However, the identification of the metabolite ethylenediaminetri(methylenephosphonic acid) via LC/MS analysis in the test medium during EDTMP degradation indicates a different initial cleavage step as compared to GS. For EDTMP, it is evident that the initial cleavage occurs at the C-N bond. The detection of different key enzymes at regulated levels, form the bacterial proteoms during EDTMP exposure, further supports this finding. This study illustrates that widely used and structurally more complex aminophosphonates can be degraded by Ochrobactrum sp. BTU1 via the well-known degradation pathways but with different initial cleavage strategy compared to GS.
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Affiliation(s)
- Ramona Riedel
- Chair of Biotechnology of Water Treatment Brandenburg, Institute of Environmental Technology, BTU Cottbus-Senftenberg, Cottbus, Germany.
| | - Fabian M Commichau
- FG Synthetic Microbiology, Institute for Biotechnology, BTU Cottbus-Senftenberg, Senftenberg, Germany; FG Molecular Microbiology, Institute for Biology, University of Hohenheim, Stuttgart, Germany
| | - Dirk Benndorf
- Applied Biosciences and Process Engineering, Anhalt University of Applied Sciences, Köthen, Germany; Chair of Bioprocess Engineering, Otto von Guericke University, Magdeburg, Germany; Bioprocess Engineering, Max Planck Institute for Dynamics of Complex Technical Systems, Magdeburg, Germany
| | - Robert Hertel
- FG Synthetic Microbiology, Institute for Biotechnology, BTU Cottbus-Senftenberg, Senftenberg, Germany; Department of Genomic and Applied Microbiology, Institute of Microbiology and Genetics, Georg-August-University of Göttingen, Göttingen, Germany
| | - Katharina Holzer
- Department of Livestock Infectiology and Environmental Hygiene, Institute of Animal Science, University of Hohenheim, Stuttgart, Germany
| | - Ludwig E Hoelzle
- Department of Livestock Infectiology and Environmental Hygiene, Institute of Animal Science, University of Hohenheim, Stuttgart, Germany
| | - Mohammad Saba Yousef Mardoukhi
- Chair of Biotechnology of Water Treatment Brandenburg, Institute of Environmental Technology, BTU Cottbus-Senftenberg, Cottbus, Germany; FG Synthetic Microbiology, Institute for Biotechnology, BTU Cottbus-Senftenberg, Senftenberg, Germany; FG Molecular Microbiology, Institute for Biology, University of Hohenheim, Stuttgart, Germany
| | - Laura Emelie Noack
- Chair of Biotechnology of Water Treatment Brandenburg, Institute of Environmental Technology, BTU Cottbus-Senftenberg, Cottbus, Germany
| | - Marion Martienssen
- Chair of Biotechnology of Water Treatment Brandenburg, Institute of Environmental Technology, BTU Cottbus-Senftenberg, Cottbus, Germany
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6
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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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7
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Yang Y, Xu Z, Yang L, Hu MY, Jiang GY, Chen J, Yang YC, Tian Y. Ochrobactrum chromiisoli sp. nov., Isolated from Chromium-Contaminated Soil. Curr Microbiol 2023; 81:50. [PMID: 38150064 DOI: 10.1007/s00284-023-03562-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2023] [Accepted: 11/15/2023] [Indexed: 12/28/2023]
Abstract
A Gram-stain-negative, non-spore-forming, flagellated, motile, aerobic, rod-shaped bacteria strain, designated YY2XT, was isolated from chromium-contaminated soil. Phylogenetic analysis based on 16S rRNA gene, recA gene, and whole genome indicated that the strain represented a new member of the genus Ochrobactrum, family Brucellaceae, class Alphaproteobacteria. The phylogenetic trees based on 16 s rRNA gene, revealed that Falsochrobactrum ovis DSM26720T (96.7%), Ochrobactrum gallinifaecis DSM15295T (96.2%), and Pseudochrobactrum asaccharolyticum DSM25619T (96.2%) are the most closely related phylogenetic neighbors of strain YY2XT. The draft genome of YY2XT was approximately 4,650,646 bp in size with a G + C content of 53.0 mol%. Average nucleotide identity and digital DNA-DNA hybridization values among strain YY2XT and the selected Brucellaceae species were 71.4-83.1% and 13.5-42.7%, which are below the recommended cut-off values for species delineation. Growth of strain YY2XT occurred within pH 5-10 (optimum, pH 7-8), 4 ℃-42 °C (optimum, 30 °C), and NaCl concentrations of 0.0-6.0% (optimum, 1.0%). Major quinone system was ubiquinone 10, the major fatty acids were C16:0, C18:1ω7c, and C16:1ω7c and the major polyamines were spermidine and putrescine. Major polar lipids were diphosphatidylglycerol, phosphatidylglycerol, phosphatidylcholine, phosphatidylmonomethylethanolamine, phosphatidylethanolamine, and four undefined lipids. On the basis of the phenotypic, genotypic and chemotaxonomic traits, strain YY2XT was considered to represent a novel species of the genus Ochrobactrum, for which the name Ochrobactrum chromiisoli sp. nov. is proposed. The type strain is YY2XT (= CCTCC AB 2023035T = JCM 36000T).
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Affiliation(s)
- Yi Yang
- Key Laboratory of Leather Chemistry and Engineering, Ministry of Education and College of Biomass Science and Engineering, Sichuan University, Chengdu, 610065, People's Republic of China
| | - Zhe Xu
- Key Laboratory of Leather Chemistry and Engineering, Ministry of Education and College of Biomass Science and Engineering, Sichuan University, Chengdu, 610065, People's Republic of China
| | - Li Yang
- Key Laboratory of Leather Chemistry and Engineering, Ministry of Education and College of Biomass Science and Engineering, Sichuan University, Chengdu, 610065, People's Republic of China
| | - Meng-Yao Hu
- Key Laboratory of Leather Chemistry and Engineering, Ministry of Education and College of Biomass Science and Engineering, Sichuan University, Chengdu, 610065, People's Republic of China
| | - Guang-Yang Jiang
- Key Laboratory of Leather Chemistry and Engineering, Ministry of Education and College of Biomass Science and Engineering, Sichuan University, Chengdu, 610065, People's Republic of China
| | - Jia Chen
- Key Laboratory of Leather Chemistry and Engineering, Ministry of Education and College of Biomass Science and Engineering, Sichuan University, Chengdu, 610065, People's Republic of China
| | - Yi-Chen Yang
- Key Laboratory of Leather Chemistry and Engineering, Ministry of Education and College of Biomass Science and Engineering, Sichuan University, Chengdu, 610065, People's Republic of China
| | - Yongqiang Tian
- Key Laboratory of Leather Chemistry and Engineering, Ministry of Education and College of Biomass Science and Engineering, Sichuan University, Chengdu, 610065, People's Republic of China.
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8
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Abstract
This report by the European Food Safety Authority and the European Centre for Disease Prevention and Control presents the results of the zoonoses monitoring and surveillance activities carried out in 2022 in 27 Member States (MSs), the United Kingdom (Northern Ireland) and 11 non-MSs. Key statistics on zoonoses and zoonotic agents in humans, food, animals and feed are provided and interpreted historically. In 2022, the first and second most reported zoonoses in humans were campylobacteriosis and salmonellosis, respectively. The number of cases of campylobacteriosis and salmonellosis remained stable in comparison with 2021. Nineteen MSs and the United Kingdom (Northern Ireland) achieved all the established targets in poultry populations for the reduction of Salmonella prevalence for the relevant serovars. Salmonella samples from carcases of various animal species, and samples for Campylobacter quantification from broiler carcases, were more frequently positive when performed by the competent authorities than when own checks were conducted. Yersiniosis was the third most reported zoonosis in humans, followed by Shiga toxin-producing Escherichia coli (STEC) and Listeria monocytogenes infections. L. monocytogenes and West Nile virus infections were the most severe zoonotic diseases, with the most hospitalisations and highest case fatality rates. In 2022, reporting showed an increase of more than 600% compared with 2021 in locally acquired cases of human West Nile virus infection, which is a mosquito-borne disease. In the EU, the number of reported foodborne outbreaks and cases, hospitalisations and deaths was higher in 2022 than in 2021. The number of deaths from outbreaks was the highest ever reported in the EU in the last 10 years, mainly caused by L. monocytogenes and to a lesser degree by Salmonella. Salmonella and in particular S. Enteritidis remained the most frequently reported causative agent for foodborne outbreaks. Norovirus (and other calicivirus) was the agent associated with the highest number of outbreak human cases. This report also provides updates on brucellosis, Coxiella burnetii (Q fever), echinococcosis, rabies, toxoplasmosis, trichinellosis, infection with Mycobacterium tuberculosis complex (focusing on Mycobacterium bovis and Mycobacterium caprae) and tularaemia.
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9
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Blasco JM, Moreno E, Muñoz PM, Conde-Álvarez R, Moriyón I. A review of three decades of use of the cattle brucellosis rough vaccine Brucella abortus RB51: myths and facts. BMC Vet Res 2023; 19:211. [PMID: 37853407 PMCID: PMC10583465 DOI: 10.1186/s12917-023-03773-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Accepted: 10/04/2023] [Indexed: 10/20/2023] Open
Abstract
Cattle brucellosis is a severe zoonosis of worldwide distribution caused by Brucella abortus and B. melitensis. In some countries with appropriate infrastructure, animal tagging and movement control, eradication was possible through efficient diagnosis and vaccination with B. abortus S19, usually combined with test-and-slaughter (T/S). Although S19 elicits anti-smooth lipopolysaccharide antibodies that may interfere in the differentiation of infected and vaccinated animals (DIVA), this issue is minimized using appropriate S19 vaccination protocols and irrelevant when high-prevalence makes mass vaccination necessary or when eradication requisites are not met. However, S19 has been broadly replaced by vaccine RB51 (a rifampin-resistant rough mutant) as it is widely accepted that is DIVA, safe and as protective as S19. These RB51 properties are critically reviewed here using the evidence accumulated in the last 35 years. Controlled experiments and field evidence shows that RB51 interferes in immunosorbent assays (iELISA, cELISA and others) and in complement fixation, issues accentuated by revaccinating animals previously immunized with RB51 or S19. Moreover, contacts with virulent brucellae elicit anti-smooth lipopolysaccharide antibodies in RB51 vaccinated animals. Thus, accepting that RB51 is truly DIVA results in extended diagnostic confusions and, when combined with T/S, unnecessary over-culling. Studies supporting the safety of RB51 are flawed and, on the contrary, there is solid evidence that RB51 is excreted in milk and abortifacient in pregnant animals, thus being released in abortions and vaginal fluids. These problems are accentuated by the RB51 virulence in humans, lack diagnostic serological tests detecting these infections and RB51 rifampicin resistance. In controlled experiments, protection by RB51 compares unfavorably with S19 and lasts less than four years with no evidence that RB51-revaccination bolsters immunity, and field studies reporting its usefulness are flawed. There is no evidence that RB51 protects cattle against B. melitensis, infection common when raised together with small ruminants. Finally, data acumulated during cattle brucellosis eradication in Spain shows that S19-T/S is far more efficacious than RB51-T/S, which does not differ from T/S alone. We conclude that the assumption that RB51 is DIVA, safe, and efficaceous results from the uncritical repetition of imperfectly examined evidence, and advise against its use.
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Affiliation(s)
- J M Blasco
- Instituto Agroalimentario de Aragón-IA2 (CITA-Universidad de Zaragoza), Zaragoza, España
| | - E Moreno
- Programa de Investigación en Enfermedades Tropicales, Escuela de Medicina Veterinaria, Universidad Nacional, Heredia, Costa Rica
| | - P M Muñoz
- Instituto Agroalimentario de Aragón-IA2 (CITA-Universidad de Zaragoza), Zaragoza, España
- Departamento de Ciencia Animal, Centro de Investigación y Tecnología Agroalimentaria de Aragón (CITA), Zaragoza, España
| | - R Conde-Álvarez
- Instituto de Investigación Sanitaria de Navarra and Departamento de Microbiología y Parasitología, Universidad de Navarra, Pamplona, Spain
| | - I Moriyón
- Instituto de Investigación Sanitaria de Navarra and Departamento de Microbiología y Parasitología, Universidad de Navarra, Pamplona, Spain.
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10
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Moreno E, Middlebrook EA, Altamirano-Silva P, Al Dahouk S, Araj GF, Arce-Gorvel V, Arenas-Gamboa Á, Ariza J, Barquero-Calvo E, Battelli G, Bertu WJ, Blasco JM, Bosilkovski M, Cadmus S, Caswell CC, Celli J, Chacón-Díaz C, Chaves-Olarte E, Comerci DJ, Conde-Álvarez R, Cook E, Cravero S, Dadar M, De Boelle X, De Massis F, Díaz R, Escobar GI, Fernández-Lago L, Ficht TA, Foster JT, Garin-Bastuji B, Godfroid J, Gorvel JP, Güler L, Erdenliğ-Gürbilek S, Gusi AM, Guzmán-Verri C, Hai J, Hernández-Mora G, Iriarte M, Jacob NR, Keriel A, Khames M, Köhler S, Letesson JJ, Loperena-Barber M, López-Goñi I, McGiven J, Melzer F, Mora-Cartin R, Moran-Gilad J, Muñoz PM, Neubauer H, O'Callaghan D, Ocholi R, Oñate Á, Pandey P, Pappas G, Pembroke JT, Roop M, Ruiz-Villalonos N, Ryan MP, Salcedo SP, Salvador-Bescós M, Sangari FJ, de Lima Santos R, Seimenis A, Splitter G, Suárez-Esquivel M, Tabbaa D, Trangoni MD, Tsolis RM, Vizcaíno N, Wareth G, Welburn SC, Whatmore A, Zúñiga-Ripa A, Moriyón I. If You're Not Confused, You're Not Paying Attention: Ochrobactrum Is Not Brucella. J Clin Microbiol 2023; 61:e0043823. [PMID: 37395662 PMCID: PMC10446859 DOI: 10.1128/jcm.00438-23] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/04/2023] Open
Abstract
Bacteria of the genus Brucella are facultative intracellular parasites that cause brucellosis, a severe animal and human disease. Recently, a group of taxonomists merged the brucellae with the primarily free-living, phylogenetically related Ochrobactrum spp. in the genus Brucella. This change, founded only on global genomic analysis and the fortuitous isolation of some opportunistic Ochrobactrum spp. from medically compromised patients, has been automatically included in culture collections and databases. We argue that clinical and environmental microbiologists should not accept this nomenclature, and we advise against its use because (i) it was presented without in-depth phylogenetic analyses and did not consider alternative taxonomic solutions; (ii) it was launched without the input of experts in brucellosis or Ochrobactrum; (iii) it applies a non-consensus genus concept that disregards taxonomically relevant differences in structure, physiology, population structure, core-pangenome assemblies, genome structure, genomic traits, clinical features, treatment, prevention, diagnosis, genus description rules, and, above all, pathogenicity; and (iv) placing these two bacterial groups in the same genus creates risks for veterinarians, medical doctors, clinical laboratories, health authorities, and legislators who deal with brucellosis, a disease that is particularly relevant in low- and middle-income countries. Based on all this information, we urge microbiologists, bacterial collections, genomic databases, journals, and public health boards to keep the Brucella and Ochrobactrum genera separate to avoid further bewilderment and harm.
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Affiliation(s)
- Edgardo Moreno
- Programa de Investigación en Enfermedades Tropicales, Escuela de Medicina Veterinaria, Universidad Nacional, Heredia, Costa Rica
| | - Earl A. Middlebrook
- Genomics and Bioanalytics, Los Alamos National Laboratory, Los Alamos, New Mexico, USA
| | - Pamela Altamirano-Silva
- Centro de Investigación en Enfermedades Tropicales, Universidad de Costa Rica, San José, Costa Rica
| | - Sascha Al Dahouk
- Department of Environmental Hygiene, German Environment Agency, Berlin, Germany
| | - George F. Araj
- Department of Pathology and Laboratory Medicine, American University of Beirut Medical Center, Beirut, Lebanon
| | - Vilma Arce-Gorvel
- Centre d'Immunologie de Marseille-Luminy, Aix-Marseille Université, CNRS, INSERM, Marseille, France
| | - Ángela Arenas-Gamboa
- Department of Veterinary Pathobiology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas, USA
| | - Javier Ariza
- Infectious Disease Department, Hospital Universitario de Bellvitge, Universidad de Barcelona, Barcelona, Spain
| | - Elías Barquero-Calvo
- Programa de Investigación en Enfermedades Tropicales, Escuela de Medicina Veterinaria, Universidad Nacional, Heredia, Costa Rica
| | - Giorgio Battelli
- Department of Medical Veterinary Sciences, University of Bologna, Bologna, Italy
| | - Wilson J. Bertu
- Brucellosis Research Laboratory, Bacterial Research Division, National Veterinary Research Institute, Vom, Nigeria
| | - José María Blasco
- Departamento de Ciencia Animal, Centro de Investigación y Tecnología Agroalimentaria de Aragón, Zaragoza, Spain
| | - Mile Bosilkovski
- University Hospital for Infectious Diseases and Febrile Conditions, Medical Faculty, Saints Cyril and Methodius University, Skopje, Republic of North Macedonia
| | - Simeon Cadmus
- Centre for Control and Prevention of Zoonoses, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Nigeria
| | - Clayton C. Caswell
- Center for One Health Research, Virginia-Maryland College of Veterinary Medicine, Blacksburg, Virginia, USA
| | - Jean Celli
- Larner College of Medicine at the University of Vermont, Department of Microbiology and Molecular Genetics, Burlington, Vermont, USA
| | - Carlos Chacón-Díaz
- Centro de Investigación en Enfermedades Tropicales, Universidad de Costa Rica, San José, Costa Rica
| | - Esteban Chaves-Olarte
- Centro de Investigación en Enfermedades Tropicales, Universidad de Costa Rica, San José, Costa Rica
| | - Diego J. Comerci
- Instituto de Investigaciones Biotecnológicas Dr. Rodolfo A. Ugalde, Universidad Nacional de San Martín, Buenos Aires, Argentina
| | - Raquel Conde-Álvarez
- Instituto de Investigación Sanitaria de Navarra (IdisNa), Pamplona, Spain
- Departamento de Microbiología y Parasitología, Universidad de Navarra, Pamplona, Spain
| | - Elizabeth Cook
- International Livestock Research Institute, Nairobi, Kenya
| | - Silvio Cravero
- Centro de Investigación en Ciencias Veterinarias y Agropecuarias, Instituto Nacional de Tecnología Agropecuaria, Hurlingham, Argentina
| | - Maryam Dadar
- Razi Vaccine and Serum Research Institute, Agricultural Research, Education, and Extension Organization, Karaj, Iran
| | - Xavier De Boelle
- Research Unit in Biology of Microorganisms, Namur Research Institute for Life Sciences, University of Namur, Namur, Belgium
| | - Fabrizio De Massis
- Istituto Zooprofilattico Sperimentale dell'Abruzzo e del Molise, Teramo, Italy
| | - Ramón Díaz
- Departamento de Microbiología y Parasitología, Universidad de Navarra, Pamplona, Spain
| | - Gabriela I. Escobar
- Laboratorio de Brucelosis, Laboratorio Nacional de Referencia, INEI-ANLIS Dr. Carlos G. Malbrán, Buenos Aires, Argentina
| | - Luis Fernández-Lago
- Departamento de Microbiología y Genética, Universidad de Salamanca, Salamanca, Spain
| | - Thomas A. Ficht
- Texas A&M University, Veterinary Pathobiology, College Station, Texas, USA
| | - Jeffrey T. Foster
- Pathogen and Microbiome Institute, Northern Arizona University, Flagstaff, Arizona, USA
| | - Bruno Garin-Bastuji
- French Agency for Food, Environmental, and Occupational Health and Safety, Maisons-Alfort, France
| | - Jacques Godfroid
- Department of Arctic and Marine Biology, Faculty of Biosciences, Fisheries, and Economics, University of Tromsø-The Arctic University of Norway, Tromsø, Norway
| | - Jean-Pierre Gorvel
- Centre d'Immunologie de Marseille-Luminy, Aix-Marseille Université, CNRS, INSERM, Marseille, France
| | - Leyla Güler
- MG Veterinary Diagnostic Laboratory, Meram, Konya, Turkey
| | - Sevil Erdenliğ-Gürbilek
- Harran University, Faculty of Veterinary Medicine, Microbiology Department, Şanlıurfa, Şanlıurfa, Turkey
| | - Amayel M. Gusi
- Brucellosis Research Laboratory, Bacterial Research Division, National Veterinary Research Institute, Vom, Nigeria
| | - Caterina Guzmán-Verri
- Programa de Investigación en Enfermedades Tropicales, Escuela de Medicina Veterinaria, Universidad Nacional, Heredia, Costa Rica
| | - Jiang Hai
- State Key Laboratory for Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Beijing, People's Republic of China
| | - Gabriela Hernández-Mora
- Servicio Nacional de Salud Animal, Ministerio de Agricultura y Ganadería, Heredia, Costa Rica
| | - Maite Iriarte
- Instituto de Investigación Sanitaria de Navarra (IdisNa), Pamplona, Spain
- Departamento de Microbiología y Parasitología, Universidad de Navarra, Pamplona, Spain
| | - Nestor R. Jacob
- Hospital Argerich, Department of Infectious Diseases, Buenos Aires, Argentina
| | - Anne Keriel
- Centre National de Référence des Brucella, U1047, University of Montpellier/INSERM, CHU de Nîmes, Nimes, France
| | - Maamar Khames
- University of Medea, Faculty of Sciences, Department of Biology, Medea, Algeria
| | - Stephan Köhler
- Institut de Recherche en Infectiologie de Montpellier, CNRS, University of Montpellier, Montpellier, France
| | - Jean-Jacques Letesson
- Research Unit in Biology of Microorganisms, Namur Research Institute for Life Sciences, University of Namur, Namur, Belgium
| | - Maite Loperena-Barber
- Departamento de Microbiología y Parasitología, Universidad de Navarra, Pamplona, Spain
| | - Ignacio López-Goñi
- Departamento de Microbiología y Parasitología, Universidad de Navarra, Pamplona, Spain
| | - John McGiven
- WOAH Reference Laboratory for Brucellosis, Animal and Plant Health Agency, Weybridge, United Kingdom
- FAO Reference Centre for Brucellosis, Department of Bacteriology, Animal and Plant Health Agency, Weybridge, United Kingdom
| | - Falk Melzer
- Friedrich Loeffler Institut, Institute of Bacterial Infections and Zoonoses, Jena, Germany
| | - Ricardo Mora-Cartin
- Section of Rheumatology, Department of Medicine, The University of Chicago, Chicago, Illinois, USA
| | - Jacob Moran-Gilad
- Microbiology, Advanced Genomics, and Infection Control Applications Laboratory, Department of Health Systems Management, School of Public Health, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Pilar M. Muñoz
- Departamento de Ciencia Animal, Centro de Investigación y Tecnología Agroalimentaria de Aragón, Zaragoza, Spain
| | - Heinrich Neubauer
- Friedrich Loeffler Institut, Institute of Bacterial Infections and Zoonoses, Jena, Germany
| | - David O'Callaghan
- Centre National de Référence des Brucella, U1047, University of Montpellier/INSERM, CHU de Nîmes, Nimes, France
| | - Reuben Ocholi
- Bacteriology, Parasitology, and Virology Department, National Veterinary Research Institute, Vom, Nigeria
| | - Ángel Oñate
- Laboratory of Molecular Immunology, Department of Microbiology, Faculty of Biological Sciences, Universidad de Concepción, Concepción, Chile
| | - Piyush Pandey
- Department of Microbiology, Assam University, Silchar, Assam, India
| | - Georgios Pappas
- Institute of Continuing Medical Education of Ioannina, Ioannina, Greece
| | - J. Tony Pembroke
- School of Natural Sciences and Bernal Institute, University of Limerick, Limerick, Ireland
| | - Martin Roop
- Department of Microbiology and Immunology, East Carolina University School of Medicine, Greenville, North Carolina, USA
| | - Nazaret Ruiz-Villalonos
- Programa de Investigación en Enfermedades Tropicales, Escuela de Medicina Veterinaria, Universidad Nacional, Heredia, Costa Rica
| | - Michael P. Ryan
- Department of Applied Science, Technological University of the Shanno, Limerick, Ireland
| | - Suzana P. Salcedo
- Department of Pathobiological Sciences, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Miriam Salvador-Bescós
- Instituto de Investigación Sanitaria de Navarra (IdisNa), Pamplona, Spain
- Departamento de Microbiología y Parasitología, Universidad de Navarra, Pamplona, Spain
| | - Félix J. Sangari
- Instituto de Biomedicina y Biotecnología de Cantabria, Consejo Superior de Investigaciones Científicas, Universidad de Cantabria, Santander, Spain
| | - Renato de Lima Santos
- Departamento de Clínica e Cirurgia Veterinárias, Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Aristarchos Seimenis
- Mediterranean Zoonoses Control Centre, World Health Organization, Athens, Greece
| | - Gary Splitter
- School of Veterinary Medicine, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Marcela Suárez-Esquivel
- Programa de Investigación en Enfermedades Tropicales, Escuela de Medicina Veterinaria, Universidad Nacional, Heredia, Costa Rica
| | - Darem Tabbaa
- Department of Veterinary Public Health, Faculty of Veterinary Medicine, Hama University, Hama, Syria
| | - Marcos David Trangoni
- Centro de Investigación en Ciencias Veterinarias y Agropecuarias, Instituto Nacional de Tecnología Agropecuaria, Hurlingham, Argentina
| | - Renee M. Tsolis
- Department of Medical Microbiology and Immunology, School of Medicine, University of California, Davis, Davis, California, USA
| | - Nieves Vizcaíno
- Departamento de Microbiología y Genética, Universidad de Salamanca, Salamanca, Spain
| | - Gamal Wareth
- Friedrich Loeffler Institut, Institute of Bacterial Infections and Zoonoses, Jena, Germany
| | - Susan C. Welburn
- Division of Infection and Pathway Medicine, Centre for Infectious Diseases, School of Biomedical Sciences, College of Medicine and Veterinary Medicine, The University of Edinburgh, Edinburgh, United Kingdom
| | - Adrian Whatmore
- WOAH Reference Laboratory for Brucellosis, Animal and Plant Health Agency, Weybridge, United Kingdom
- FAO Reference Centre for Brucellosis, Department of Bacteriology, Animal and Plant Health Agency, Weybridge, United Kingdom
| | - Amaia Zúñiga-Ripa
- Instituto de Investigación Sanitaria de Navarra (IdisNa), Pamplona, Spain
- Departamento de Microbiología y Parasitología, Universidad de Navarra, Pamplona, Spain
| | - Ignacio Moriyón
- Instituto de Investigación Sanitaria de Navarra (IdisNa), Pamplona, Spain
- Departamento de Microbiología y Parasitología, Universidad de Navarra, Pamplona, Spain
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11
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Moriyón I, Blasco JM, Letesson JJ, De Massis F, Moreno E. Brucellosis and One Health: Inherited and Future Challenges. Microorganisms 2023; 11:2070. [PMID: 37630630 PMCID: PMC10459711 DOI: 10.3390/microorganisms11082070] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 08/02/2023] [Accepted: 08/08/2023] [Indexed: 08/27/2023] Open
Abstract
One Health is the collaborative efforts of multiple disciplines to attain optimal health for people, animals and the environment, a concept that historically owes much to the study of brucellosis, including recent political and ethical considerations. Brucellosis One Health actors include Public Health and Veterinary Services, microbiologists, medical and veterinary practitioners and breeders. Brucellosis awareness, and the correct use of diagnostic, epidemiological and prophylactic tools is essential. In brucellosis, One Health implementation faces inherited and new challenges, some aggravated by global warming and the intensification of breeding to meet growing food demands. In endemic scenarios, disease awareness, stakeholder sensitization/engagement and the need to build breeder trust are unresolved issues, all made difficult by the protean characteristics of this zoonosis. Extended infrastructural weaknesses, often accentuated by geography and climate, are critically important. Capacity-building faces misconceptions derived from an uncritical adoption of control/eradication strategies applied in countries with suitable means, and requires additional reference laboratories in endemic areas. Challenges for One Health implementation include the lack of research in species other than cattle and small ruminants, the need for a safer small ruminant vaccine, the need to fill in the infrastructure gap, the need for realistic capacity-building, the creation of reference laboratories in critical areas, and the stepwise implementation of measures not directly transposed from the so-called developed countries.
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Affiliation(s)
- Ignacio Moriyón
- Microbiology and Parasitology Department, Medical School, Universidad de Navarra, 31008 Pamplona, Spain
| | - José María Blasco
- Departamento de Ciencia Animal, Centro de Investigación y Tecnología Agroalimentaria de Aragón (CITA), 50059 Zaragoza, Spain;
| | - Jean Jacques Letesson
- Research Unit in Biology of Microorganisms, Narilis, University of Namur, 5000 Namur, Belgium;
| | - Fabrizio De Massis
- Istituto Zooprofilattico Sperimentale dell’Abruzzo e del Molise, 64100 Teramo, Italy;
| | - Edgardo Moreno
- Programa de Investigación en Enfermedades Tropicales, Escuela de Medicina Veterinaria, Universidad Nacional, Heredia 40104, Costa Rica;
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12
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Long GS, Hider J, Duggan AT, Klunk J, Eaton K, Karpinski E, Giuffra V, Ventura L, Prowse TL, Fornaciari A, Fornaciari G, Holmes EC, Golding GB, Poinar HN. A 14th century CE Brucella melitensis genome and the recent expansion of the Western Mediterranean clade. PLoS Pathog 2023; 19:e1011538. [PMID: 37523413 PMCID: PMC10414615 DOI: 10.1371/journal.ppat.1011538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Revised: 08/10/2023] [Accepted: 07/05/2023] [Indexed: 08/02/2023] Open
Abstract
Brucellosis is a disease caused by the bacterium Brucella and typically transmitted through contact with infected ruminants. It is one of the most common chronic zoonotic diseases and of particular interest to public health agencies. Despite its well-known transmission history and characteristic symptoms, we lack a more complete understanding of the evolutionary history of its best-known species-Brucella melitensis. To address this knowledge gap we fortuitously found, sequenced and assembled a high-quality ancient B. melitensis draft genome from the kidney stone of a 14th-century Italian friar. The ancient strain contained fewer core genes than modern B. melitensis isolates, carried a complete complement of virulence genes, and did not contain any indication of significant antimicrobial resistances. The ancient B. melitensis genome fell as a basal sister lineage to a subgroup of B. melitensis strains within the Western Mediterranean phylogenetic group, with a short branch length indicative of its earlier sampling time, along with a similar gene content. By calibrating the molecular clock we suggest that the speciation event between B. melitensis and B. abortus is contemporaneous with the estimated time frame for the domestication of both sheep and goats. These results confirm the existence of the Western Mediterranean clade as a separate group in the 14th CE and suggest that its divergence was due to human and ruminant co-migration.
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Affiliation(s)
- George S. Long
- Department of Biology, McMaster University, Hamilton, Canada
- McMaster Ancient DNA Centre, Departments of Anthropology and Biochemistry, McMaster University, Hamilton, Canada
| | - Jessica Hider
- McMaster Ancient DNA Centre, Departments of Anthropology and Biochemistry, McMaster University, Hamilton, Canada
- Department of Anthropology, McMaster University, Hamilton, Canada
| | - Ana T. Duggan
- McMaster Ancient DNA Centre, Departments of Anthropology and Biochemistry, McMaster University, Hamilton, Canada
- Department of Anthropology, McMaster University, Hamilton, Canada
| | - Jennifer Klunk
- Department of Biology, McMaster University, Hamilton, Canada
- McMaster Ancient DNA Centre, Departments of Anthropology and Biochemistry, McMaster University, Hamilton, Canada
- Daicel Arbor Biosciences, Ann Arbor, Michigan, United States of America
| | - Katherine Eaton
- McMaster Ancient DNA Centre, Departments of Anthropology and Biochemistry, McMaster University, Hamilton, Canada
- Department of Anthropology, McMaster University, Hamilton, Canada
| | - Emil Karpinski
- Department of Biology, McMaster University, Hamilton, Canada
- McMaster Ancient DNA Centre, Departments of Anthropology and Biochemistry, McMaster University, Hamilton, Canada
| | - Valentina Giuffra
- Division of Paleopathology, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - Luca Ventura
- Department of Biotechnological and Applied Clinical Sciences, University of L’Aquila, L’Aquila, Italy
- Division of Pathology, San Salvatore Hospital, Coppito, Italy
| | - Tracy L. Prowse
- Department of Anthropology, McMaster University, Hamilton, Canada
| | - Antonio Fornaciari
- Division of Paleopathology, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | | | - Edward C. Holmes
- Sydney Institute for Infectious Diseases, School of Medical Sciences, University of Sydney, Sydney, Australia
| | | | - Hendrik N. Poinar
- McMaster Ancient DNA Centre, Departments of Anthropology and Biochemistry, McMaster University, Hamilton, Canada
- Department of Anthropology, McMaster University, Hamilton, Canada
- Department of Biochemistry, McMaster University, Hamilton, Canada
- Michael G. DeGroote Institute for Infectious Disease Research, McMaster University, Hamilton, Canada
- CIFAR Humans and the Microbiome Program, Toronto, Canada
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Dadar M, Brangsch H, Alamian S, Neubauer H, Wareth G. Whole-genome sequencing for genetic diversity analysis of Iranian Brucella spp. isolated from humans and livestock. One Health 2023; 16:100483. [PMID: 36632477 PMCID: PMC9827381 DOI: 10.1016/j.onehlt.2023.100483] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 12/30/2022] [Accepted: 01/02/2023] [Indexed: 01/04/2023] Open
Abstract
Brucellosis is one of the most common zoonoses in the Middle East. It is causing economic losses to the livestock industry and has a great public health concern. Little is known about the genetic diversity and distribution of brucellae in Iran. Therefore, forty Brucella spp. strains (B. abortus and B. melitensis) isolated from animals and humans were analyzed by whole genome sequencing (WGS) technology using single nucleotide polymorphism (SNP) analysis and core genome multilocus sequence typing (cgMLST). Brucella isolates were obtained from lymph nodes (cows and camels), milk (cows, camels and sheep), and aborted foetus samples (sheep and goats), as well as cerebrospinal fluid and blood of humans. The isolates were originating from thirteen provinces of Iran and isolated between 2015 and 2020. According to in-silico MLST, ST8 and ST2 were the most frequent sequence types in B. melitensis and B. abortus, respectively. Based on phylogeographic reconstruction using cgSNP analysis, the investigated Iranian B. melitensis strains belonged to the American and Mediterranean lineages of the B. melitensis phylogeny. Furthermore, cgSNP analysis revealed a similarity between Iranian B. abortus isolates and strains from Iraq and Egypt. Therefore, the origin of the Iranian strains can be suggested to be strains from neighboring and Middle East countries. Moreover, cgMLST analysis showed that the Iranian B. melitensis strains were closely relative to strains recovered from sheep and humans in Iraq, Afghanistan, Syria, Turkmenistan, and Pakistan. In the current panel of strains, cgMLST and cgSNP analysis provided an appropriate and accurate tool for effective traceback analyses for Brucella spp. from Iran. The results of cgSNP and cgMLST helped to understand the geographic distribution and interspecies transmission of Iranian strains and highlight the importance of specific brucellosis control measures in Iran with regard to the One-Health approach.
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Affiliation(s)
- Maryam Dadar
- Razi Vaccine and Serum Research Institute (RVSRI), Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran
| | - Hanka Brangsch
- Friedrich-Loeffler-Institut, Institute of Bacterial Infections and Zoonoses (IBIZ), Naumburger Str. 96a, 07743 Jena, Germany
| | - Saeed Alamian
- Razi Vaccine and Serum Research Institute (RVSRI), Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran
| | - Heinrich Neubauer
- Friedrich-Loeffler-Institut, Institute of Bacterial Infections and Zoonoses (IBIZ), Naumburger Str. 96a, 07743 Jena, Germany
| | - Gamal Wareth
- Friedrich-Loeffler-Institut, Institute of Bacterial Infections and Zoonoses (IBIZ), Naumburger Str. 96a, 07743 Jena, Germany
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Aljanazreh B, Shamseye AA, Abuawad A, Ashhab Y. Genomic distribution of the insertion sequence IS711 reveal a potential role in Brucella genome plasticity and host preference. INFECTION, GENETICS AND EVOLUTION : JOURNAL OF MOLECULAR EPIDEMIOLOGY AND EVOLUTIONARY GENETICS IN INFECTIOUS DISEASES 2023:105457. [PMID: 37257801 DOI: 10.1016/j.meegid.2023.105457] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 04/10/2023] [Accepted: 05/25/2023] [Indexed: 06/02/2023]
Abstract
The Insertion Sequence 711 (IS711) is linked to the Brucella genus. Mapping the genomic distribution of IS711 can help understand this insertion element's biological and evolutionary role. This work aimed to delineate the genomic distribution of the IS711 element and to study its association with Brucella evolution. A total of 124 genomes representing 9 Brucella species were searched using BLASTn sequence alignment tool to identify complete and truncated copies of IS711. Based on the genomic context, each IS711 locus was assigned a code using the initial letters of its neighboring genes. Various tools were used to annotate the neighboring genes and determine the shared synteny around orthologous IS711 loci. The tool Islandviewer 4 was used to scan for genomic islands. The Codon Tree method was used to build phylogenetic trees of B. melitensis, B. abortus, and B. suis genomes. The phylogenetic trees of the three species were analyzed, taking into account the genomic distribution patterns of IS711. The result of IS711 frequency analysis showed a relatively conserved number of copies/genome for the different species and for some biovars. The analysis showed that Brucella species with a relatively low IS711 copy number (4-8 copies/genome) are linked to domestic animals as primary hosts and have potential for zoonotic transmission. However, species with a relatively higher copy number (12-30 copies/genome) are less zoonotic and tend to be linked with wild animals as primary hosts. Analyzing the genomic distribution map of IS711 loci showed several unique patterns of IS711 distribution that are correlated with the evolution of Brucella species and biovars. The results also showed that 46.2% of the conserved IS711 elements are located within genomic islands. Based on our results and previous data, we postulate a model explaining the IS711 role in Brucella evolution. We assume that during the transition from a free-living to an intracellular lifestyle, a descendant of the Brucella genus had acquired a progenitor sequence of the IS711. Subsequently, a burst in IS711 transposition occurred. This parasitic expansion can be deleterious and has to be counteracted by evolutionary forces to prevent lineage extension and to promote adaptation to host. Similar to other plasmid-free pathogenic α-Proteobacteria bacteria, the balance of expansion and reduction of insertion elements could be one of the mechanisms to control genome reduction and streamlining. We hypothesize that the IS711-mediated genomic changes and other small sequence nucleotide changes in specific orthologous genes could significantly contribute to Brucella's evolution and adaptation to different animal hosts.
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Affiliation(s)
- Bessan Aljanazreh
- Palestine-Korea Biotechnology Center, Palestine Polytechnic University, Hebron, Palestine
| | - Assalla Abu Shamseye
- Palestine-Korea Biotechnology Center, Palestine Polytechnic University, Hebron, Palestine
| | - Abdalhalim Abuawad
- Palestine-Korea Biotechnology Center, Palestine Polytechnic University, Hebron, Palestine
| | - Yaqoub Ashhab
- Palestine-Korea Biotechnology Center, Palestine Polytechnic University, Hebron, Palestine.
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15
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Sigida EN, Zdorovenko EL, Shashkov AS, Dmitrenok AS, Fedonenko YP. Structure of the O-specific polysaccharide of Ochrobactrum endophyticum KCTC 42485 T containing 3-(3-hydroxy-2,3-dimethyl-5-oxoprolyl)amino-3,6-dideoxy-d-galactose. Carbohydr Res 2023; 527:108810. [PMID: 37040681 DOI: 10.1016/j.carres.2023.108810] [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: 02/25/2023] [Revised: 04/04/2023] [Accepted: 04/05/2023] [Indexed: 04/13/2023]
Abstract
Ochrobactrum endophyticum (syn. Brucella endophytica) is an aerobic species of Alphaproteobacteria isolated from healthy roots of Glycyrrhiza uralensis. Here we report the structure of the O-specific polysaccharide obtained by mild acid hydrolysis of the lipopolysaccharide of the type strain KCTC 42485:→3)-α-l-FucpNAc-(1→3)-β-d-QuipNAc-(1→2)-β-d-Fucp3NAcyl-(1→ where Acyl is 3-hydroxy-2,3-dimethyl-5-oxoprolyl. The structure was elucidated using chemical analyses along with 1H and 13C NMR spectroscopy (including 1H,1H COSY, TOCSY, ROESY and 1H,13C HSQC, HMBC, HSQC-TOCSY and HSQC-NOESY experiments). To our knowledge the OPS structure is novel and has not been previously published.
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Affiliation(s)
- Elena N Sigida
- Institute of Biochemistry and Physiology of Plants and Microorganisms, FRC Saratov Scientific Centre of Russian Academy of Sciences, 13, Prospekt Entuziastov, Saratov, 410049, Russia; N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospekt 47, 119991, Moscow, Russia.
| | - Evelina L Zdorovenko
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospekt 47, 119991, Moscow, Russia
| | - Alexander S Shashkov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospekt 47, 119991, Moscow, Russia
| | - Andrey S Dmitrenok
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospekt 47, 119991, Moscow, Russia
| | - Yulia P Fedonenko
- Institute of Biochemistry and Physiology of Plants and Microorganisms, FRC Saratov Scientific Centre of Russian Academy of Sciences, 13, Prospekt Entuziastov, Saratov, 410049, Russia; Chernyshevsky Saratov State University, Ulitsa Astrakhanskaya 83, 410012, Saratov, Russia
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Pereira CR, de Jesus Sousa T, Lima da Silva A, Gonçalves Dos Santos R, Minharro S, Costa Custódio DA, Pickard DJ, O'Callaghan D, Foster JT, de Castro Soares S, Juca Ramos RT, Góes-Neto A, Matiuzzi da Costa M, Lage AP, Azevedo V, Seles Dorneles EM. First report and whole-genome sequencing of Pseudochrobactrum saccharolyticum in Latin America. Microbes Infect 2023; 25:105018. [PMID: 35940401 DOI: 10.1016/j.micinf.2022.105018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 05/24/2022] [Accepted: 06/24/2022] [Indexed: 02/04/2023]
Abstract
The Brucellaceae family comprises microorganisms similar both phenotypically and genotypically, making it difficult to identify the etiological agent of these infections. This study reports the first isolation, identification, and characterization of Pseudochrobactrum saccharolyticum (strain 115) from Latin America. Strain 115 was isolated in 2007 from a bovine in Brazil and was initially classified as Brucella spp. by classical microbiological tests and bcsp31 PCR. The antimicrobial susceptibility of strain 115 was tested against drugs used to treat human brucellosis by minimal inhibitory concentration test. Subsequently, the whole genome of the strain was sequenced, assembled, and characterized. Phylogenetic trees built from 16S rRNA and recA gene sequences enabled the classification of strain 115 as Pseudochrobactrum spp. Phylogenomic analysis using Single Nucleotide Polymorphisms and Average Nucleotide Identity allowed the classification of the strain as P. saccharolyticum. Additionally, a Tetra Correlation Search identified one related genome from the same species, which was compared with strain 115 by analyzing genomic islands. This is the first identification and whole-genome sequence of P. saccharolyticum in Latin America and highlights a challenge in the diagnosis of bovine brucellosis, which could be solved by including the sequencing of 16S rRNA and recA genes in routine diagnostics.
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Affiliation(s)
- Carine Rodrigues Pereira
- Departamento de Medicina Veterinária, Faculdade de Zootecnia e Medicina Veterinária, Universidade Federal de Lavras, Lavras, Minas Gerais, Brazil
| | - Thiago de Jesus Sousa
- Departamento de Genética, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Alessandra Lima da Silva
- Departamento de Genética, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Roselane Gonçalves Dos Santos
- Departamento de Genética, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Sílvia Minharro
- Centro de Ciência da Saúde - Medicina - Araguaína, Universidade Federal de Tocantins, Tocantins, Brazil
| | - Dirceia Aparecida Costa Custódio
- Departamento de Medicina Veterinária, Faculdade de Zootecnia e Medicina Veterinária, Universidade Federal de Lavras, Lavras, Minas Gerais, Brazil
| | - Derek J Pickard
- Jeffrey Cheah Biomedical Centre, Cambridge Biomedical Campus, University of Cambridge, Cambridge, United Kingdom
| | - David O'Callaghan
- IVBIC, INSERM, Universite de Montpellier, Nimes, France; CNR Brucella, Laboratoire de Microbiologie, CHU Nimes, Nimes, France
| | - Jeffrey T Foster
- Pathogen and Microbiome Institute, Northern Arizona University, Flagstaff, AZ, USA
| | - Siomar de Castro Soares
- Departamento de Microbiologia, Imunologia e Parasitologia, Instituto de Ciências Biológicas e Ciências Naturais, Universidade Federal Do Triângulo Mineiro, Uberaba, Minas Gerais, Brazil
| | - Rommel Thiago Juca Ramos
- Instituto de Ciências Biológicas, Centro de Genômica e Biologia de Sistemas, Universidade Federal Do Pará, Belém, Pará, Brazil
| | - Aristóteles Góes-Neto
- Departamento de Genética, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Mateus Matiuzzi da Costa
- Universidade Federal Do Vale Do São Francisco, Departamento de Zootecnia, Petrolina, Pernambuco, Brazil
| | - Andrey Pereira Lage
- Departamento de Medicina Veterinária Preventiva, Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Vasco Azevedo
- Departamento de Genética, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Elaine Maria Seles Dorneles
- Departamento de Medicina Veterinária, Faculdade de Zootecnia e Medicina Veterinária, Universidade Federal de Lavras, Lavras, Minas Gerais, Brazil.
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Pascual DW, Goodwin ZI, Bhagyaraj E, Hoffman C, Yang X. Activation of mucosal immunity as a novel therapeutic strategy for combating brucellosis. Front Microbiol 2022; 13:1018165. [PMID: 36620020 PMCID: PMC9814167 DOI: 10.3389/fmicb.2022.1018165] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Accepted: 11/29/2022] [Indexed: 12/24/2022] Open
Abstract
Brucellosis is a disease of livestock that is commonly asymptomatic until an abortion occurs. Disease in humans results from contact of infected livestock or consumption of contaminated milk or meat. Brucella zoonosis is primarily caused by one of three species that infect livestock, Bacillus abortus in cattle, B. melitensis in goats and sheep, and B. suis in pigs. To aid in disease prophylaxis, livestock vaccines are available, but are only 70% effective; hence, improved vaccines are needed to mitigate disease, particularly in countries where disease remains pervasive. The absence of knowing which proteins confer complete protection limits development of subunit vaccines. Instead, efforts are focused on developing new and improved live, attenuated Brucella vaccines, since these mimic attributes of wild-type Brucella, and stimulate host immune, particularly T helper 1-type responses, required for protection. In considering their development, the new mutants must address Brucella's defense mechanisms normally active to circumvent host immune detection. Vaccination approaches should also consider mode and route of delivery since disease transmission among livestock and humans is believed to occur via the naso-oropharyngeal tissues. By arming the host's mucosal immune defenses with resident memory T cells (TRMs) and by expanding the sources of IFN-γ, brucellae dissemination from the site of infection to systemic tissues can be prevented. In this review, points of discussion focus on understanding the various immune mechanisms involved in disease progression and which immune players are important in fighting disease.
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King KA, Caudill MT, Caswell CC. A comprehensive review of small regulatory RNAs in Brucella spp. Front Vet Sci 2022; 9:1026220. [PMID: 36532353 PMCID: PMC9751625 DOI: 10.3389/fvets.2022.1026220] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Accepted: 11/15/2022] [Indexed: 09/29/2023] Open
Abstract
Brucella spp. are Gram-negative bacteria that naturally infect a variety of domesticated and wild animals, often resulting in abortions and sterility. Humans exposed to these animals or animal products can also develop debilitating, flu-like disease. The brucellae are intracellular pathogens that reside predominantly within immune cells, typically macrophages, where they replicate in a specialized compartment. This capacity of Brucella to survive and replicate within macrophages is essential to their ability to cause disease. In recent years, several groups have identified and characterized small regulatory RNAs (sRNAs) as critical factors in the control of Brucella physiology within macrophages and overall disease virulence. sRNAs are generally < 300 nucleotides in length, and these independent sRNA transcripts are encoded either next to (i.e., cis-encoded) or at a distant location to (i.e., trans-encoded) the genes that they regulate. Trans-encoded sRNAs interact with the mRNA transcripts through short stretches of imperfect base pairing that often require the RNA chaperone Hfq to facilitate sRNA-mRNA interaction. In many instances, these sRNA-mRNA interactions inhibit gene expression, usually by occluding the ribosome-binding site (RBS) and/or by decreasing the stability of the mRNA, leading to degradation of the transcript. A number of sRNAs have been predicted and authenticated in Brucella strains, and a variety of approaches, techniques, and means of validation have been employed in these efforts. Nonetheless, some important issues and considerations regarding the study of sRNA regulation in Brucella need to be addressed. For example, the lack of uniform sRNA nomenclature in Brucella has led to difficulty in comparisons of sRNAs across the different Brucella species, and there exist multiple names in the literature for what are functionally the same sRNA. Moreover, even though bona fide sRNAs have been discovered in Brucella, scant functional information is known about the regulatory activities of these sRNAs, or the extent to which these sRNAs are required for the intracellular life and/or host colonization by the brucellae. Therefore, this review summarizes the historical context of Hfq and sRNAs in Brucella; our current understanding of Brucella sRNAs; and some future perspectives and considerations for the field of sRNA biology in the brucellae.
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Affiliation(s)
| | | | - Clayton C. Caswell
- Center for One Health Research, Department of Biomedical Sciences and Pathobiology, VA-MD College of Veterinary Medicine, Virginia Tech, Blacksburg, VA, United States
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Díaz Rodríguez CA, Díaz-García L, Bunk B, Spröer C, Herrera K, Tarazona NA, Rodriguez-R LM, Overmann J, Jiménez DJ. Novel bacterial taxa in a minimal lignocellulolytic consortium and their potential for lignin and plastics transformation. ISME COMMUNICATIONS 2022; 2:89. [PMID: 37938754 PMCID: PMC9723784 DOI: 10.1038/s43705-022-00176-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 09/09/2022] [Accepted: 09/13/2022] [Indexed: 11/09/2023]
Abstract
The understanding and manipulation of microbial communities toward the conversion of lignocellulose and plastics are topics of interest in microbial ecology and biotechnology. In this study, the polymer-degrading capability of a minimal lignocellulolytic microbial consortium (MELMC) was explored by genome-resolved metagenomics. The MELMC was mostly composed (>90%) of three bacterial members (Pseudomonas protegens; Pristimantibacillus lignocellulolyticus gen. nov., sp. nov; and Ochrobactrum gambitense sp. nov) recognized by their high-quality metagenome-assembled genomes (MAGs). Functional annotation of these MAGs revealed that Pr. lignocellulolyticus could be involved in cellulose and xylan deconstruction, whereas Ps. protegens could catabolize lignin-derived chemical compounds. The capacity of the MELMC to transform synthetic plastics was assessed by two strategies: (i) annotation of MAGs against databases containing plastic-transforming enzymes; and (ii) predicting enzymatic activity based on chemical structural similarities between lignin- and plastics-derived chemical compounds, using Simplified Molecular-Input Line-Entry System and Tanimoto coefficients. Enzymes involved in the depolymerization of polyurethane and polybutylene adipate terephthalate were found to be encoded by Ps. protegens, which could catabolize phthalates and terephthalic acid. The axenic culture of Ps. protegens grew on polyhydroxyalkanoate (PHA) nanoparticles and might be a suitable species for the industrial production of PHAs in the context of lignin and plastic upcycling.
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Affiliation(s)
- Carlos Andrés Díaz Rodríguez
- Microbiomes and Bioenergy Research Group, Department of Biological Sciences, Universidad de los Andes, Bogotá, Colombia
| | - Laura Díaz-García
- Microbiomes and Bioenergy Research Group, Department of Biological Sciences, Universidad de los Andes, Bogotá, Colombia
- Department of Chemical and Biological Engineering, Advanced Biomanufacturing Centre, University of Sheffield, Sheffield, UK
| | - Boyke Bunk
- Leibniz Institute DSMZ-German Collection of Microorganisms and Cell Cultures, Braunschweig, Germany
| | - Cathrin Spröer
- Leibniz Institute DSMZ-German Collection of Microorganisms and Cell Cultures, Braunschweig, Germany
| | - Katherine Herrera
- Department of Civil and Environmental Engineering, Universidad de los Andes, Bogotá, Colombia
| | | | - Luis M Rodriguez-R
- Department of Microbiology and Digital Science Center (DiSC), University of Innsbruck, Innsbruck, Austria
| | - Jörg Overmann
- Leibniz Institute DSMZ-German Collection of Microorganisms and Cell Cultures, Braunschweig, Germany
- Braunschweig University of Technology, Braunschweig, Germany
| | - Diego Javier Jiménez
- Microbiomes and Bioenergy Research Group, Department of Biological Sciences, Universidad de los Andes, Bogotá, Colombia.
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