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Markova J, Langova D, Babak V, Kostovova I. Ovine and Caprine Strains of Corynebacterium pseudotuberculosis on Czech Farms-A Comparative Study. Microorganisms 2024; 12:875. [PMID: 38792705 PMCID: PMC11123211 DOI: 10.3390/microorganisms12050875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2024] [Revised: 04/19/2024] [Accepted: 04/23/2024] [Indexed: 05/26/2024] Open
Abstract
Caseous lymphadenitis (CLA) is a worldwide disease of small ruminants caused by Corynebacterium pseudotuberculosis, a facultative intracellular pathogen that is able to survive and multiply in certain white blood cells of the host. In this study, 33 strains of C. pseudotuberculosis were isolated from sheep and goats suffering from CLA on nine farms in the Czech Republic. All these strains were tested for their antibiotic susceptibility, ability to form a biofilm and resistance to the effects of commonly used disinfectant agents. To better understand the virulence of C. pseudotuberculosis, the genomes of strains were sequenced and comparative genomic analysis was performed with another 123 genomes of the same species, including ovis and equi biovars, downloaded from the NCBI. The genetic determinants for the virulence factors responsible for adherence and virulence factors specialized for iron uptake and exotoxin phospholipase D were revealed in every analyzed genome. Carbohydrate-Active Enzymes were compared, revealing the presence of genetic determinants encoding exo-α-sialidase (GH33) and the CP40 protein in most of the analyzed genomes. Thirty-three Czech strains of C. pseudotuberculosis were identified as the biovar ovis on the basis of comparative genome analysis. All the compared genomes of the biovar ovis strains were highly similar regardless of their country of origin or host, reflecting their clonal behavior.
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Affiliation(s)
- Jirina Markova
- Department of Microbiology and Antimicrobial Resistance, Veterinary Research Institute, 62100 Brno, Czech Republic; (D.L.); (V.B.); (I.K.)
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Di Donato A, Gambi L, Ravaioli V, Perulli S, Cirasella L, Rossini R, Luppi A, Tosi G, Fiorentini L. First Report of Caseous Lymphadenitis by Corynebacterium pseudotubercolosis and Pulmonary Verminosis in a Roe Deer ( Capreolus capreolus Linnaeus, 1758) in Italy. Animals (Basel) 2024; 14:566. [PMID: 38396534 PMCID: PMC10885920 DOI: 10.3390/ani14040566] [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: 12/28/2023] [Revised: 02/02/2024] [Accepted: 02/06/2024] [Indexed: 02/25/2024] Open
Abstract
Caseous lymphadenitis is a chronic debilitating disease typical of small ruminants, but it is also noted in several other domestic and wild species. In this report, we present the first documented case in Italy of pseudotuberculosis in a roe deer (Capreolus capreolus, Linnaeus 1758) found dead in the mountains of Forlì-Cesena province, Emilia Romagna region. The carcass underwent necropsy according to standard protocols, revealing generalized lymphadenopathy and severe apostematous pneumonia with multifocal and encapsulated abscesses. Corynebacterium pseudotuberculosis was isolated from the lung parenchyma, lymph nodes and abscesses. Additionally, severe parasitic bronchopneumonia of the caudal lobes and gastrointestinal strongyle infestation were detected. To our knowledge, this is the first documented case of CLA referable to C. pseudotubercolosis in a roe deer in Italy.
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Affiliation(s)
- Alessandra Di Donato
- Istituto Zooprofilattico Sperimentale Della Lombardia e dell’Emilia Romagna (IZSLER), 47122 Forlì, Italy; (A.D.D.); (L.G.); (V.R.); (S.P.); (R.R.); (G.T.); (L.F.)
| | - Lorenzo Gambi
- Istituto Zooprofilattico Sperimentale Della Lombardia e dell’Emilia Romagna (IZSLER), 47122 Forlì, Italy; (A.D.D.); (L.G.); (V.R.); (S.P.); (R.R.); (G.T.); (L.F.)
| | - Valentina Ravaioli
- Istituto Zooprofilattico Sperimentale Della Lombardia e dell’Emilia Romagna (IZSLER), 47122 Forlì, Italy; (A.D.D.); (L.G.); (V.R.); (S.P.); (R.R.); (G.T.); (L.F.)
| | - Simona Perulli
- Istituto Zooprofilattico Sperimentale Della Lombardia e dell’Emilia Romagna (IZSLER), 47122 Forlì, Italy; (A.D.D.); (L.G.); (V.R.); (S.P.); (R.R.); (G.T.); (L.F.)
| | - Letizia Cirasella
- Istituto Zooprofilattico Sperimentale Della Lombardia e dell’Emilia Romagna (IZSLER), 47122 Forlì, Italy; (A.D.D.); (L.G.); (V.R.); (S.P.); (R.R.); (G.T.); (L.F.)
| | - Rachele Rossini
- Istituto Zooprofilattico Sperimentale Della Lombardia e dell’Emilia Romagna (IZSLER), 47122 Forlì, Italy; (A.D.D.); (L.G.); (V.R.); (S.P.); (R.R.); (G.T.); (L.F.)
| | - Andrea Luppi
- Istituto Zooprofilattico Sperimentale Della Lombardia e dell’Emilia Romagna (IZSLER), 43126 Parma, Italy;
| | - Giovanni Tosi
- Istituto Zooprofilattico Sperimentale Della Lombardia e dell’Emilia Romagna (IZSLER), 47122 Forlì, Italy; (A.D.D.); (L.G.); (V.R.); (S.P.); (R.R.); (G.T.); (L.F.)
| | - Laura Fiorentini
- Istituto Zooprofilattico Sperimentale Della Lombardia e dell’Emilia Romagna (IZSLER), 47122 Forlì, Italy; (A.D.D.); (L.G.); (V.R.); (S.P.); (R.R.); (G.T.); (L.F.)
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Prudhomme J, Depaquit J, Fite J, Quillery E, Bouhsira E, Liénard E. Systematic review of hematophagous arthropods present in cattle in France. Parasite 2023; 30:56. [PMID: 38084937 PMCID: PMC10714678 DOI: 10.1051/parasite/2023059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Accepted: 11/21/2023] [Indexed: 12/18/2023] Open
Abstract
The arrival of pathogens, whether zoonotic or not, can have a lasting effect on commercial livestock farms, with dramatic health, social and economic consequences. However, available data concerning the arthropod vectors present and circulating on livestock farms in France are still very imprecise, fragmentary, and scattered. In this context, we conducted a systematic review of the hematophagous arthropod species recorded on different types of cattle farms in mainland France (including Corsica). The used vector "groups" studied were biting flies, biting midges, black flies, fleas, horse flies, lice, louse flies, mosquitoes, sand flies, and ticks. A large number of documents were selected (N = 9,225), read (N = 1,047) and analyzed (N = 290), allowing us to provide distribution and abundance maps of different species of medical and veterinary interest according to literature data. Despite the large number of documents collected and analyzed, there are few data provided on cattle farm characteristics. Moreover, data on all arthropod groups lack numerical detail and are based on limited data in time and/or space. Therefore, they are not generalizable nor comparable. There is still little information on many vectors (and their pathogens) and still many unknowns for most studied groups. It appears necessary to provide new, updated and standardized data, collected in different geographical and climatological areas. Finally, this work highlights the lack of entomologists, funding, training and government support, leading to an increased risk of uncontrolled disease emergence in cattle herds.
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Affiliation(s)
- Jorian Prudhomme
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InTheres, University of Toulouse, INRAE, ENVT 31300 Toulouse France
| | - Jérôme Depaquit
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Université de Reims Champagne-Ardenne, Faculté de Pharmacie, EA7510 EpidémioSurveillance et Circulation de Parasites dans les Environnements, and ANSES, USC Pathogènes-Environnement-Toxoplasme-Arthropodes-Réservoirs-bioDiversité Reims France
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Centre Hospitalo-Universitaire, Laboratoire de Parasitologie-Mycologie 51092 Reims France
| | - Johanna Fite
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French Agency for Food, Environmental and Occupational Health & Safety, Risk Assessment Department Maisons-Alfort Cedex France
| | - Elsa Quillery
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French Agency for Food, Environmental and Occupational Health & Safety, Risk Assessment Department Maisons-Alfort Cedex France
| | - Emilie Bouhsira
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InTheres, University of Toulouse, INRAE, ENVT 31300 Toulouse France
| | - Emmanuel Liénard
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InTheres, University of Toulouse, INRAE, ENVT 31300 Toulouse France
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Bernardino PN, de Paula CL, Pereira AFM, Ribeiro MG, de Carvalho Azevedo VA, Borges AS, Fernandes-Júnior A, Oliveira-Filho JP. Potential in vitro action of an adenosine analog and synergism with penicillin against Corynebacterium pseudotuberculosis. Braz J Microbiol 2023; 54:559-563. [PMID: 36525240 PMCID: PMC9944597 DOI: 10.1007/s42770-022-00885-0] [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: 05/17/2022] [Accepted: 11/29/2022] [Indexed: 12/23/2022] Open
Abstract
Caseous lymphadenitis is a well-known disease caused by Corynebacterium pseudotuberculosis affecting small ruminants with small significance to human health because of its minor zoonotic potential. In both cases, few treatment options are available and conventional antimicrobial therapy is commonly refractory due to development of pyogranulomatous reactions, bringing great interest in discovering novel therapeutics for more suitable approaches. Dideoxynucleotides presented antibacterial action against various bacteria but were never described for C. pseudotuberculosis. Hypothesizing the antimicrobial action of 2',3'-dideoxiadenosine (ddATP) against C. pseudotuberculosis, we performed for the first time an investigation of its minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) in the ATCC® 19,410 strain and a well-characterized clinical isolate of C. pseudotuberculosis. We also assessed potential synergism with penicillin. ddATP showed a growth delay effect for C. pseudotuberculosis at 2 µmol/mL and a MIC and MBC of 4 µmol/mL against the ATCC® 19,410 strain, but not for the clinical strain. An antimicrobial effect was observed when using concentrations lower than the MIC of ddATP associated with penicillin for both strains tested. Our data suggest the potential of nucleotide analogs, especially adenosine, and its combination with penicillin, as a possible novel treatment for C. pseudotuberculosis-induced infections, and contributes with knowledge regarding alternative drugs to treat C. pseudotuberculosis infections.
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Affiliation(s)
- Pedro Negri Bernardino
- School of Veterinary Medicine and Animal Science, São Paulo State University (UNESP), Botucatu, Brazil.
- School of Veterinary Medicine, Molecular Biosciences Department, University of California - Davis, Davis, USA.
| | | | | | - Márcio Garcia Ribeiro
- School of Veterinary Medicine and Animal Science, São Paulo State University (UNESP), Botucatu, Brazil
| | | | - Alexandre Secorun Borges
- School of Veterinary Medicine and Animal Science, São Paulo State University (UNESP), Botucatu, Brazil
| | | | - José Paes Oliveira-Filho
- School of Veterinary Medicine and Animal Science, São Paulo State University (UNESP), Botucatu, Brazil
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Torky HA, Saad HM, Khaliel SA, Kassih AT, Sabatier JM, Batiha GES, Hetta HF, Elghazaly EM, De Waard M. Isolation and Molecular Characterization of Corynebacterium pseudotuberculosis: Association with Proinflammatory Cytokines in Caseous Lymphadenitis Pyogranulomas. Animals (Basel) 2023; 13:ani13020296. [PMID: 36670836 PMCID: PMC9854522 DOI: 10.3390/ani13020296] [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: 11/22/2022] [Revised: 12/30/2022] [Accepted: 01/11/2023] [Indexed: 01/18/2023] Open
Abstract
Corynebacterium pseudotuberculosis (C. pseudotuberculosis) is a causative agent of numerous chronic diseases, including caseous lymphadenitis (CLA) in sheep and goats, which has a zoonotic potential in humans in addition to a poor therapeutic response. In this study, out of 120 collected samples, only 12 (10%) were positive for C. pseudotuberculosis by PCR and by intraperitoneal injection of male Guinea pigs and then characterized for antimicrobial susceptibility and its genetic-relatedness by enterobacterial repetitive intergenic consensus polymerase chain reaction (ERIC-PCR), which showed 2-4 bands ranging from 100 to 3000 bp that can be clustered into four clusters (C1-C4). Despite the serotype biovar 1 only infecting sheep and goats, ERIC-PCR reveals intra-subtyping variation. Examination of affected LNs and organs revealed marked enlargement with either thick creamy green pus or multiple abscesses of variable sizes with a central caseated core surrounded by dense fibrous capsule. A histopathological examination revealed a central necrotic core surrounded by a peripheral mantle of mononuclear cells and a fibrous capsule. Positive immune expression of nuclear factor kappa B (NF-κB/p65) and interleukin-1β (IL-1β) and negative expression of tumor necrosis factor (TNF) in CLA is the first report to our knowledge. Conclusion: In CLA pyogranulomas, IL1β is a more crucial proinflammatory cytokine than TNF in the regulation of C. pseudotuberculosis infection, which is accompanied by marked NF-κB immunoexpression. Therefore, the NF-κB/p65 signaling pathway is involved in the activation of IL1β, and additional immunohistochemical studies are required to determine the various roles of NF-κB/p65 in the inflammatory response within CLA pyogranulomas to control this pathogen.
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Affiliation(s)
- Helmy A. Torky
- Department of Microbiology, Faculty of Veterinary Medicine, Alexandria University, Abees, Alexandria 21523, Egypt
| | - Hebatallah M. Saad
- Department of Pathology, Faculty of Veterinary Medicine, Matrouh University, Marsa Matruh 51744, Egypt
- Correspondence: (H.M.S.); (M.D.W.)
| | - Samy A. Khaliel
- Department of Microbiology, Faculty of Veterinary Medicine, Alexandria University, Abees, Alexandria 21523, Egypt
| | - Asmaa T. Kassih
- Department of Microbiology, Faculty of Veterinary Medicine, Alexandria University, Abees, Alexandria 21523, Egypt
| | - Jean-Marc Sabatier
- Institut de Neurophysiopathologie (INP), CNRS UMR 7051, Faculté des Sciences Médicales et Paramédicales, Aix-Marseille Université, 27 Bd Jean Moulin, F-13005 Marseille, France
| | - Gaber El-Saber Batiha
- Department of Pharmacology and Therapeutics, Faculty of Veterinary Medicine, Damanhour University, Damanhour 22511, Egypt
| | - Helal F. Hetta
- Department of Medical Microbiology and Immunology, Faculty of Medicine, Assiut University, Assiut 71515, Egypt
| | - Eman M. Elghazaly
- Department of Microbiology, Faculty of Veterinary Medicine, Matrouh University, Marsa Matruh 51744, Egypt
| | - Michel De Waard
- Smartox Biotechnology, 6 Rue des Platanes, F-38120 Saint-Egrève, France
- L’institut Du Thorax, INSERM, CNRS, UNIV NANTES, F-44007 Nantes, France
- LabEx «Ion Channels, Science & Therapeutics», Université de Nice Sophia-Antipolis, F-06560 Valbonne, France
- Correspondence: (H.M.S.); (M.D.W.)
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Mathewos M, Fesseha H. Cytopathological and bacteriological studies on caseous lymphadenitis in cattle slaughtered at Bishoftu municipal abattoir, Ethiopia. Vet Med Sci 2022; 8:1211-1218. [PMID: 35120279 PMCID: PMC9122433 DOI: 10.1002/vms3.744] [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] [Indexed: 11/29/2022] Open
Abstract
Background Caseous lymphadenitis (CLA) is a chronic bacterial infectious disease that affects cattle, shoats, and other domestic and wild ruminants. Methods A purposive cross‐sectional study was conducted on 30 cattle with enlarged lymph nodes to investigate CLA using cytopathological and bacteriological techniques from cattle slaughtered at Bishoftu municipal abattoir. Results From a total of 30 cattle subjected to clinical and post‐mortem examinations, only one bull was found to be infected with a rare case of CLA in Bishoftu municipal abattoir, Ethiopia. Enlargement of the pre‐scapular lymph node was the only clinical finding during ante‐mortem inspection of the bull. The gross pathological lesion showed a pre‐scapular lymph node with a caseo‐necrotic dystrophic calcification that was accompanied by a rough texture and white to grayish hue. Histopathologically, the lymph node was characterized by central liquefactive necrosis that was surrounded by coagulative necrosis containing multiple foci of mineralization, infiltration of polymorphonuclear neutrophils and mononuclear immature fibrosis containing inflammatory cells and also with some sort of a thick layer of mature fibrosis that defines the magnitude of the lesion. Cytologically, multi‐lobulated (intact and degenerated) neutrophils, a few reactive lymphocytes, macrophages and some crenated histocytes have been recognized. The bacterial culture of the sample revealed small, white cream, dry, waxy colonies with a narrow area of β‐haemolysis. The isolate of the sample was a Gram‐positive cocci‐bacilli that was arranged in a Chinese pattern on Gram staining, and catalase and urease were positive in the biochemical analysis of this organism, which was able to ferment glucose and maltose but not trehalose and xylose. Conclusions The present investigation indicated that CLA was prevalent as sporadic cases among cattle slaughtered in Bishoftu municipal abattoir. Thus, effective preventive and control measures, such as good sanitation and hygiene, should be followed during meat inspection.
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Affiliation(s)
- Mesfin Mathewos
- School of Veterinary Medicine, Wolaita Sodo University, Wolaita Sodo, Ethiopia
| | - Haben Fesseha
- School of Veterinary Medicine, Wolaita Sodo University, Wolaita Sodo, Ethiopia
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Badell E, Guillot S, Tulliez M, Pascal M, Panunzi LG, Rose S, Litt D, Fry NK, Brisse S. Improved quadruplex real-time PCR assay for the diagnosis of diphtheria. J Med Microbiol 2019; 68:1455-1465. [DOI: 10.1099/jmm.0.001070] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- Edgar Badell
- Institut Pasteur, National Reference Center for Corynebacteria of the diphtheriae complex, Paris, France
- Institut Pasteur, Biodiversity and Epidemiology of Bacterial Pathogens, Paris, France
| | - Sophie Guillot
- Institut Pasteur, Biodiversity and Epidemiology of Bacterial Pathogens, Paris, France
| | - Marie Tulliez
- Institut Pasteur, Biodiversity and Epidemiology of Bacterial Pathogens, Paris, France
| | - Marine Pascal
- Institut Pasteur, Biodiversity and Epidemiology of Bacterial Pathogens, Paris, France
| | | | - Samuel Rose
- Respiratory and Vaccine Preventable Bacteria Reference Unit, National Infection Service, Public Health England, London, UK
| | - David Litt
- Respiratory and Vaccine Preventable Bacteria Reference Unit, National Infection Service, Public Health England, London, UK
| | - Norman K. Fry
- Immunisation and Countermeasures Division, National Infection Service, Public Health England, London, UK
- Respiratory and Vaccine Preventable Bacteria Reference Unit, National Infection Service, Public Health England, London, UK
| | - Sylvain Brisse
- Institut Pasteur, Biodiversity and Epidemiology of Bacterial Pathogens, Paris, France
- Institut Pasteur, National Reference Center for Corynebacteria of the diphtheriae complex, Paris, France
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Diren Sigirci B, Alabas B, Halac B, Yuksel HT, Ikiz S. An abscess caused by Corynebacterium pseudotuberculosis in a Budgett’s frog (Lepidobatrachus laevis): a case report. J Exot Pet Med 2019. [DOI: 10.1053/j.jepm.2019.06.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Santos LM, Stanisic D, Menezes UJ, Mendonça MA, Barral TD, Seyffert N, Azevedo V, Durán N, Meyer R, Tasic L, Portela RW. Biogenic Silver Nanoparticles as a Post-surgical Treatment for Corynebacterium pseudotuberculosis Infection in Small Ruminants. Front Microbiol 2019; 10:824. [PMID: 31068912 PMCID: PMC6491793 DOI: 10.3389/fmicb.2019.00824] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2018] [Accepted: 04/01/2019] [Indexed: 12/16/2022] Open
Abstract
Caseous lymphadenitis (CL) is an infectious and zoonotic disease characterized by the development of granulomas in the lymph nodes and internal organs of small ruminants. The etiological agent of this disease is Corynebacterium pseudotuberculosis, a Gram-positive and facultative intracellular bacterium. The conventional treatment for CL consists of drainage and chemical cauterization of the lesions using a 10% iodine solution. However, this type of treatment is not effective, due to iodine's cytotoxic profile and low antibacterial activity. Currently, silver nanoparticles (AgNPs) can be seen as an alternative treatment for CL due to their antimicrobial activity and wound healing effects. Therefore, the present study aimed to evaluate AgNPs as a post-surgical treatment for CL. Twenty-nine goats and sheep with clinical signs of CL were selected. Surgical intervention was performed to excise the caseous lesions. To treat the lesions, an ointment formulation based on AgNP mixed with natural waxes and oils was used in the experimental group, and the conventional treatment with 10% iodine was used in the control group. Bacteria were isolated from the excised caseous material. The animals were observed for 8 weeks after the surgical treatment, and blood samples were taken weekly. The surgical wounds of sheep treated with AgNP healed faster, and the surgical wound area was smaller during the observation period; the latter effect was also observed in goats. AgNP-treated animals also had less purulent discharge and less moisture in the surgical wounds. The AgNP-treated animals had lower leukocyte counts and lower titers of anti-C. pseudotuberculosis antibodies. There was no statistically significant difference between the groups with regard to the hemogram results. The results of the susceptibility testing of C. pseudotuberculosis strains (T1, 1002, FRC41, and VD57 strains) and clinical isolates to AgNPs showed growth inhibition, even at low concentrations. It can be concluded that post-surgical treatment of CL using the AgNP-based ointment may be a promising tool in the control of CL, through faster healing, decreased wound contamination, and no apparent toxic effects.
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Affiliation(s)
- Laerte Marlon Santos
- Laboratório de Imunologia e Biologia Molecular, Instituto de Ciências da Saúde, Universidade Federal da Bahia, Salvador, Brazil
| | - Danijela Stanisic
- Laboratório de Química Biológica, Departamento de Química Orgânica, Instituto de Química, Universidade Estadual de Campinas, Campinas, Brazil
| | - Ulisses José Menezes
- Laboratório de Imunologia e Biologia Molecular, Instituto de Ciências da Saúde, Universidade Federal da Bahia, Salvador, Brazil
| | - Marcos Antônio Mendonça
- Laboratório de Imunologia e Biologia Molecular, Instituto de Ciências da Saúde, Universidade Federal da Bahia, Salvador, Brazil
| | - Thiago Doria Barral
- Laboratório de Imunologia e Biologia Molecular, Instituto de Ciências da Saúde, Universidade Federal da Bahia, Salvador, Brazil
| | - Núbia Seyffert
- Programa de Pós-Graduação em Microbiologia, Instituto de Biologia, Universidade Federal da Bahia, Salvador, Brazil
| | - Vasco Azevedo
- Laboratório de Genética Celular e Molecular, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Nelson Durán
- Laboratório de Biologia Estrutural e Funcional, Instituto de Biologia, Universidade Estadual de Campinas, Campinas, Brazil
| | - Roberto Meyer
- Laboratório de Imunologia e Biologia Molecular, Instituto de Ciências da Saúde, Universidade Federal da Bahia, Salvador, Brazil
| | - Ljubica Tasic
- Laboratório de Química Biológica, Departamento de Química Orgânica, Instituto de Química, Universidade Estadual de Campinas, Campinas, Brazil
| | - Ricardo Wagner Portela
- Laboratório de Imunologia e Biologia Molecular, Instituto de Ciências da Saúde, Universidade Federal da Bahia, Salvador, Brazil
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García de Hombre AM, Bonadeo A, Suárez-Bordón P, Sánchez-Oñoro M. Tumor cervical de etiología inusual. Enferm Infecc Microbiol Clin 2018; 36:525-526. [DOI: 10.1016/j.eimc.2017.07.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Revised: 07/10/2017] [Accepted: 07/12/2017] [Indexed: 10/19/2022]
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Domenis L, Spedicato R, Pepe E, Orusa R, Robetto S. Caseous Lymphadenitis Caused by Corynebacterium pseudotuberculosis in Alpine Chamois ( Rupicapra r. rupicapra ): a Review of 98 Cases. J Comp Pathol 2018; 161:11-19. [DOI: 10.1016/j.jcpa.2018.04.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Revised: 04/13/2018] [Accepted: 04/17/2018] [Indexed: 11/16/2022]
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Rajamani Sekar S, Veeraraghavan B, Anandan S, Devanga Ragupathi N, Sangal L, Joshi S. Strengthening the laboratory diagnosis of pathogenicCorynebacteriumspecies in the Vaccine era. Lett Appl Microbiol 2017; 65:354-365. [DOI: 10.1111/lam.12781] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2017] [Revised: 07/06/2017] [Accepted: 07/20/2017] [Indexed: 01/06/2023]
Affiliation(s)
- S.K. Rajamani Sekar
- Department of Clinical Microbiology; Christian Medical College; Vellore India
| | - B. Veeraraghavan
- Department of Clinical Microbiology; Christian Medical College; Vellore India
| | - S. Anandan
- Department of Clinical Microbiology; Christian Medical College; Vellore India
| | | | - L. Sangal
- World Health Organization (WHO) Country Office; New Delhi India
| | - S. Joshi
- World Health Organization (WHO) Country Office; New Delhi India
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Haas DJ, Dorneles EMS, Spier SJ, Carroll SP, Edman J, Azevedo VA, Heinemann MB, Lage AP. Molecular epidemiology of Corynebacterium pseudotuberculosis isolated from horses in California. INFECTION GENETICS AND EVOLUTION 2016; 49:186-194. [PMID: 27979735 DOI: 10.1016/j.meegid.2016.12.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Revised: 11/10/2016] [Accepted: 12/10/2016] [Indexed: 11/26/2022]
Abstract
Corynebacterium pseudotuberculosis biovar Equi is an important pathogen of horses. It is increasing in frequency in the United States, and is responsible for various clinical forms of infection, including external abscesses, internal abscesses of the abdominal or thoracic cavities, and ulcerative lymphangitis. The host/pathogen factors dictating the form or severity of infection are currently unknown. Our recent investigations have shown that genotyping C. pseudotuberculosis isolates using enterobacterial repetitive intergenic consensus (ERIC)-PCR is useful for understanding the evolutionary genetics of the species as well for molecular epidemiology studies. The aims of the present study were to assess (i) the genetic diversity of C. pseudotuberculosis strains isolated from horses in California, United States and (ii) the epidemiologic relationships among isolates. One hundred and seven C. pseudotuberculosis biovar Equi isolates from ninety-five horses, and two C. pseudotuberculosis biovar Ovis strains, C. pseudotuberculosis ATCC 19410T type strain and C. pseudotuberculosis 1002 vaccine strain, were fingerprinted using the ERIC 1+2-PCR. C. pseudotuberculosis isolated from horses showed a high genetic diversity, clustering in twenty-seven genotypes with a diversity index of 0.91. Minimal spanning tree showed four major clonal complexes with a pattern of temporal clustering. Strains isolated from the same horse showed identical ERIC 1+2-PCR genotype, with the exception of two strains isolated from the same animal that showed distinct genotypes, suggesting a co-infection. We found no strong genetic signals related to clinical form (including internal versus external infections). However, temporal clustering of genotypes was observed.
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Affiliation(s)
- Dionei J Haas
- Departamento de Medicina Veterinária Preventiva, Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Elaine M S Dorneles
- Departamento de Medicina Veterinária Preventiva, Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil; Departamento de Medicina Veterinária, Universidade Federal de Lavras, Lavras, Minas Gerais, Brazil
| | - Sharon J Spier
- Department of Medicine and Epidemiology, University of California, Davis, California, USA
| | - Scott P Carroll
- Department of Medicine and Epidemiology, University of California, Davis, California, USA
| | - Judy Edman
- Department of Medicine and Epidemiology, University of California, Davis, California, USA
| | - Vasco A Azevedo
- Departamento de Biologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Marcos B Heinemann
- Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, Brazil
| | - Andrey P Lage
- Departamento de Medicina Veterinária Preventiva, Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil.
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Development, validation and implementation of a quadruplex real-time PCR assay for identification of potentially toxigenic corynebacteria. J Med Microbiol 2016; 65:1521-1527. [DOI: 10.1099/jmm.0.000382] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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15
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Rezende ADFS, Brum AA, Reis CG, Angelo HR, Leal KS, Silva MTDO, Simionatto S, Azevedo V, Santos A, Portela RW, Dellagostin O, Borsuk S. In silico identification of Corynebacterium pseudotuberculosis antigenic targets and application in immunodiagnosis. J Med Microbiol 2016; 65:521-529. [DOI: 10.1099/jmm.0.000263] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- Andrea de Fátima Silva Rezende
- Laboratório de Pesquisa em Doenças Infecciosas, Centro de Desenvolvimento Tecnológico, Biotecnologia, UFPel, Pelotas, RS 96010-900, Brazil
| | - Alexandre Antunes Brum
- Laboratório de Pesquisa em Doenças Infecciosas, Centro de Desenvolvimento Tecnológico, Biotecnologia, UFPel, Pelotas, RS 96010-900, Brazil
| | - Carlos Guilherme Reis
- Laboratório de Pesquisa em Doenças Infecciosas, Centro de Desenvolvimento Tecnológico, Biotecnologia, UFPel, Pelotas, RS 96010-900, Brazil
| | - Henrique Ramos Angelo
- Laboratório de Pesquisa em Doenças Infecciosas, Centro de Desenvolvimento Tecnológico, Biotecnologia, UFPel, Pelotas, RS 96010-900, Brazil
| | - Karen Silva Leal
- Laboratório de Pesquisa em Doenças Infecciosas, Centro de Desenvolvimento Tecnológico, Biotecnologia, UFPel, Pelotas, RS 96010-900, Brazil
| | - Mara Thais de Oliveira Silva
- Laboratório de Pesquisa em Doenças Infecciosas, Centro de Desenvolvimento Tecnológico, Biotecnologia, UFPel, Pelotas, RS 96010-900, Brazil
| | - Simone Simionatto
- Laboratório de Biologia Molecular, Faculdade de Ciências Ambientais, UFGD, Dourados, MS 79825-070, Brazil
| | - Vasco Azevedo
- Laboratório de Genética Celular e Molecular, Instituto de Ciências Biológicas, UFMG, Belo Horizonte, MG 31270-901, Brazil
| | - Anderson Santos
- Laboratório de Genética Celular e Molecular, Instituto de Ciências Biológicas, UFMG, Belo Horizonte, MG 31270-901, Brazil
| | - Ricardo Wagner Portela
- Laboratório de Imunologia e Biologia Molecular, Instituto de Ciências da Saúde, UFBA, Salvador, BA 40140-100, Brazil
| | - Odir Dellagostin
- Laboratório de Pesquisa em Doenças Infecciosas, Centro de Desenvolvimento Tecnológico, Biotecnologia, UFPel, Pelotas, RS 96010-900, Brazil
| | - Sibele Borsuk
- Laboratório de Pesquisa em Doenças Infecciosas, Centro de Desenvolvimento Tecnológico, Biotecnologia, UFPel, Pelotas, RS 96010-900, Brazil
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Genome Sequence of Corynebacterium pseudotuberculosis MB20 bv. equi Isolated from a Pectoral Abscess of an Oldenburg Horse in California. GENOME ANNOUNCEMENTS 2014; 2:2/6/e00977-14. [PMID: 25395628 PMCID: PMC4241654 DOI: 10.1128/genomea.00977-14] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The genome of Corynebacterium pseudotuberculosis MB20 bv. equi was sequenced using the Ion Personal Genome Machine (PGM) platform, and showed a size of 2,363,089 bp, with 2,365 coding sequences and a GC content of 52.1%. These results will serve as a basis for further studies on the pathogenicity of C. pseudotuberculosis bv. equi.
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Dorneles EMS, Santana JA, Ribeiro D, Dorella FA, Guimarães AS, Moawad MS, Selim SA, Garaldi ALM, Miyoshi A, Ribeiro MG, Gouveia AMG, Azevedo V, Heinemann MB, Lage AP. Evaluation of ERIC-PCR as genotyping method for Corynebacterium pseudotuberculosis isolates. PLoS One 2014; 9:e98758. [PMID: 24901343 PMCID: PMC4046986 DOI: 10.1371/journal.pone.0098758] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2013] [Accepted: 05/06/2014] [Indexed: 11/19/2022] Open
Abstract
The aim of this study was to evaluate the Enterobacterial Repetitive Intergenic Consensus (ERIC-PCR) as a tool for molecular typing of C. pseudotuberculosis isolates from eight different hosts in twelve countries. Ninety-nine C. pseudotuberculosis field strains, one type strain (ATCC 19410T) and one vaccine strain (1002) were fingerprinted using the ERIC-1R and ERIC-2 primers, and the ERIC-1R+ERIC-2 primer pair. Twenty-nine different genotypes were generated by ERIC 1-PCR, 28 by ERIC 2-PCR and 35 by ERIC 1+2-PCR. The discriminatory index calculated for ERIC 1, ERIC 2, and ERIC 1+2-PCR was 0.89, 0.86, and 0.92, respectively. Epidemiological concordance was established for all ERIC-PCR assays. ERIC 1+2-PCR was defined as the best method based on suitability of the amplification patterns and discriminatory index. Minimal spanning tree for ERIC 1+2-PCR revealed three major clonal complexes and clustering around nitrate-positive (biovar Equi) and nitrate-negative (biovar Ovis) strains. Therefore, ERIC 1+2-PCR proved to be the best technique evaluated in this study for genotyping C. pseudotuberculosis strains, due to its usefulness for molecular epidemiology investigations.
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Affiliation(s)
- Elaine M. S. Dorneles
- Departamento de Medicina Veterinária Preventiva, Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Jordana A. Santana
- Departamento de Medicina Veterinária Preventiva, Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Dayana Ribeiro
- Departamento de Biologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Fernanda Alves Dorella
- Departamento de Biologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Alessandro S. Guimarães
- Embrapa Gado de Leite, Empresa Brasileira de Pesquisa Agropecuária, Juiz de Fora, Brazil
- Departmento de Medicina Veterinária, Universidade Federal de Lavras, Lavras, Minas Gerais, Brazil
| | - Mohamed S. Moawad
- Department of Toxicology and Forensic Medicine, Cairo University, Cairo, Egypt
| | - Salah A. Selim
- Department of Toxicology and Forensic Medicine, Cairo University, Cairo, Egypt
| | - Ana Luiza M. Garaldi
- Centro Biomédico, Faculdade de Ciências Médicas, Universidade Estadual do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Anderson Miyoshi
- Departamento de Biologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Márcio G. Ribeiro
- Departamento de Higiene Veterinária e Saúde Pública, Faculdade de Medicina Veterinária e Zootecnia Universidade, Estadual Paulista, Botucatu, Brazil
| | - Aurora M. G. Gouveia
- Departamento de Medicina Veterinária Preventiva, Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Vasco Azevedo
- Departamento de Biologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Marcos B. Heinemann
- Departamento de Medicina Veterinária Preventiva, Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Andrey P. Lage
- Departamento de Medicina Veterinária Preventiva, Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
- * E-mail:
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Santos AR, Pereira VB, Barbosa E, Baumbach J, Pauling J, Röttger R, Turk MZ, Silva A, Miyoshi A, Azevedo V. Mature Epitope Density--a strategy for target selection based on immunoinformatics and exported prokaryotic proteins. BMC Genomics 2013; 14 Suppl 6:S4. [PMID: 24564223 PMCID: PMC3908659 DOI: 10.1186/1471-2164-14-s6-s4] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Background Current immunological bioinformatic approaches focus on the prediction of allele-specific epitopes capable of triggering immunogenic activity. The prediction of major histocompatibility complex (MHC) class I epitopes is well studied, and various software solutions exist for this purpose. However, currently available tools do not account for the concentration of epitope products in the mature protein product and its relation to the reliability of target selection. Results We developed a computational strategy based on measuring the epitope's concentration in the mature protein, called Mature Epitope Density (MED). Our method, though simple, is capable of identifying promising vaccine targets. Our online software implementation provides a computationally light and reliable analysis of bacterial exoproteins and their potential for vaccines or diagnosis projects against pathogenic organisms. We evaluated our computational approach by using the Mycobacterium tuberculosis (Mtb) H37Rv exoproteome as a gold standard model. A literature search was carried out on 60 out of 553 Mtb's predicted exoproteins, looking for previous experimental evidence concerning their possible antigenicity. Half of the 60 proteins were classified as highest scored by the MED statistic, while the other half were classified as lowest scored. Among the lowest scored proteins, ~13% were confirmed as not related to antigenicity or not contributing to the bacterial pathogenicity, and 70% of the highest scored proteins were confirmed as related. There was no experimental evidence of antigenic or pathogenic contributions for three of the highest MED-scored Mtb proteins. Hence, these three proteins could represent novel putative vaccine and drug targets for Mtb. A web version of MED is publicly available online at http://med.mmci.uni-saarland.de/. Conclusions The software presented here offers a practical and accurate method to identify potential vaccine and diagnosis candidates against pathogenic bacteria by "reading" results from well-established reverse vaccinology software in a novel way, considering the epitope's concentration in the mature portion of the protein.
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Santiago LB, Pinheiro RR, Alves FSF, Santos VWSD, Rodrigues ADS, Lima AMC, Oliveira ELD, Albuquerque FHMARD. In vivo evaluation of antiseptics and disinfectants on control of Caseous Lymphadenitis: clinical, haematological, serological and microbiological monitoring. ARQUIVOS DO INSTITUTO BIOLÓGICO 2013. [DOI: 10.1590/s1808-16572013000300003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The objective of this experiment was to evaluate the efficacy of iodine tincture at 10% and sodium hypochlorite at 2.5% applied into the abscess of animals affected by Caseous Lymphadenitis (CL). Eighteen ewes were used, assorted into three groups: one treated with iodine tincture at 10% (IT), another one with sodium hypochlorite at 2.5% (SH) and the last group underwent the conventional treatment (CT). Conventional treatment was based on surgical drainage and chemical cauterization of the lesion with iodine tincture at 10%. Natural rupture of six abscesses from IT group was observed and in five of them the viability of Corynebacterium pseudotuberculosis was confirmed on the lesion place, after rupture of lymph node. As for the SH group, spontaneous rupture was observed in five out of six abscesses treated, and the microorganism was identified on the lesion of five animals, after rupture. In the sixth animal of this group, abscess involution was noticed. A severe swelling was identified in the region of lymph node treated, resulting in wide lesion in animals from groups IT and SH. No difference (p > 0,05) was found in blood parameters due to treatments. As for the serological monitoring of animals, comparative analysis between months within each group showed that months 1, 2, 3 and 4 were different (p < 0,05) from month 0, for groups IT and SH. For CT group, there was no difference (p > 0,05) between months 1 to 5 and 0. Then, the application of iodine tincture at 10% or sodium hypochlorite at 2.5% into the abscess of animals affected by CL, at stage in which lesions are detected through inspection, is not effective for its control.
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Pinheiro R, Eloy A, Alves F, Andrioli A, Santiago L. Thoracic aortic aneurysm in a buck associated with caseous lymphadenitis. ARQ BRAS MED VET ZOO 2013. [DOI: 10.1590/s0102-09352013000300012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This paper reports the clinical, bacteriological and pathological findings of a thoracic aortic aneurysm in a four-year-old Anglo-Nubian goat buck, related to a framework of visceral caseous lymphadenitis. General clinical examination showed heart rate of 75 beats per minute, respiratory rate of 20 movements per minute and ruminal movements of four movements per minute. Superficial lymph nodes were normal upon palpation. Rectal temperature was slightly high (40.5°C). Blood test showed an intense leukocytosis (54,000/µL), characterized by strong neutrophil shift to the left. At necropsy, a large blood clot was detected in the thoracic cavity. The thickening of the myocardium and dilatation of the aorta in the thoracic portion, presenting a saculiform format was also observed. A large number of abscesses were disseminated in the media and intima layers of aorta. The aorta lumen obstruction by arterial plaques consisting of inflammatory infiltrate, predominantly neutrophilic was also detected. Abscesses were found spread in turbinate, rumen, reticulum, kidneys, liver, spleen, testicles and aorta wall. The microbiological exam of exudate confirmed Corynebacterium pseudotuberculosis as the causal agent.
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Torres LDFC, Ribeiro D, Hirata R, Pacheco LGC, Souza MC, dos Santos LS, dos Santos CS, Salah M, da Costa MM, Ribeiro MG, Selim SA, Azevedo VADC, Mattos-Guaraldi AL. Multiplex polymerase chain reaction to identify and determine the toxigenicity of Corynebacterium spp with zoonotic potential and an overview of human and animal infections. Mem Inst Oswaldo Cruz 2013; 108:S0074-02762013000300272. [PMID: 23778659 PMCID: PMC4005569 DOI: 10.1590/s0074-02762013000300003] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2012] [Accepted: 09/14/2012] [Indexed: 11/21/2022] Open
Abstract
Corynebacterium diphtheriae, Corynebacterium ulcerans and Corynebacterium pseudotuberculosis constitute a group of potentially toxigenic microorganisms that are related to different infectious processes in animal and human hosts. Currently, there is a lack of information on the prevalence of disease caused by these pathogens, which is partially due to a reduction in the frequency of routine laboratory testing. In this study, a multiplex polymerase chain reaction (mPCR) assay that can simultaneously identify and determine the toxigenicity of these corynebacterial species with zoonotic potential was developed. This assay uses five primer pairs targeting the following genes: rpoB (Corynebacterium spp), 16S rRNA (C. ulcerans and C. pseudotuberculosis), pld (C. pseudotuberculosis), dtxR (C. diphtheriae) and tox [diphtheria toxin (DT) ]. In addition to describing this assay, we review the literature regarding the diseases caused by these pathogens. Of the 213 coryneform strains tested, the mPCR results for all toxigenic and non-toxigenic strains of C . diphtheriae, C. ulcerans and C. pseudotuberculosis were in 100% agreement with the results of standard biochemical tests and PCR-DT. As an alternative to conventional methods, due to its advantages of specificity and speed, the mPCR assay used in this study may successfully be applied for the diagnosis of human and/or animal diseases caused by potentially toxigenic corynebacterial species.
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Affiliation(s)
- Luciene de Fátima Costa Torres
- Laboratório de Difteria e Corinebactérias de Importância Clínica, Faculdade de Ciências Médicas, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brasil
| | - Dayana Ribeiro
- Departamento de Biologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
| | - Raphael Hirata
- Laboratório de Difteria e Corinebactérias de Importância Clínica, Faculdade de Ciências Médicas, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brasil
| | | | - Monica Cristina Souza
- Laboratório de Difteria e Corinebactérias de Importância Clínica, Faculdade de Ciências Médicas, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brasil
| | - Louisy Sanches dos Santos
- Laboratório de Difteria e Corinebactérias de Importância Clínica, Faculdade de Ciências Médicas, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brasil
| | - Cíntia Silva dos Santos
- Laboratório de Difteria e Corinebactérias de Importância Clínica, Faculdade de Ciências Médicas, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brasil
| | - Mohammad Salah
- Faculdade de Medicina Veterinária, Universidade do Cairo, Giza, Egito
| | | | - Marcio Garcia Ribeiro
- Departamento de Higiene Veterinária e Saúde Pública, Escola de Medicina Veterinária e Ciência Animal, Universidade Estadual Paulista, Botucatu, SP, Brasil
| | - Salah A Selim
- Faculdade de Medicina Veterinária, Universidade do Cairo, Giza, Egito
| | | | - Ana Luiza Mattos-Guaraldi
- Laboratório de Difteria e Corinebactérias de Importância Clínica, Faculdade de Ciências Médicas, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brasil
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Evaluation of the Andromas matrix-assisted laser desorption ionization-time of flight mass spectrometry system for identification of aerobically growing Gram-positive bacilli. J Clin Microbiol 2012; 50:2702-7. [PMID: 22692743 DOI: 10.1128/jcm.00368-12] [Citation(s) in RCA: 99] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Matrix-associated laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS) is a rapid and simple microbial identification method. Previous reports using the Biotyper system suggested that this technique requires a preliminary extraction step to identify Gram-positive rods (GPRs), a technical issue that may limit the routine use of this technique to identify pathogenic GPRs in the clinical setting. We tested the accuracy of the MALDI-TOF MS Andromas strategy to identify a set of 659 GPR isolates representing 16 bacterial genera and 72 species by the direct colony method. This bacterial collection included 40 C. diphtheriae, 13 C. pseudotuberculosis, 19 C. ulcerans, and 270 other Corynebacterium isolates, 32 L. monocytogenes and 24 other Listeria isolates, 46 Nocardia, 75 Actinomyces, 18 Actinobaculum, 11 Propionibacterium acnes, 18 Propionibacterium avidum, 30 Lactobacillus, 21 Bacillus, 2 Rhodococcus equi, 2 Erysipelothrix rhusiopathiae, and 38 other GPR isolates, all identified by reference techniques. Totals of 98.5% and 1.2% of non-Listeria GPR isolates were identified to the species or genus level, respectively. Except for L. grayi isolates that were identified to the species level, all other Listeria isolates were identified to the genus level because of highly similar spectra. These data demonstrate that rapid identification of pathogenic GPRs can be obtained without an extraction step by MALDI-TOF mass spectrometry.
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Ott L, McKenzie A, Baltazar MT, Britting S, Bischof A, Burkovski A, Hoskisson PA. Evaluation of invertebrate infection models for pathogenic corynebacteria. ACTA ACUST UNITED AC 2012; 65:413-21. [PMID: 22443092 DOI: 10.1111/j.1574-695x.2012.00963.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2011] [Revised: 03/08/2012] [Accepted: 03/09/2012] [Indexed: 02/02/2023]
Abstract
For several pathogenic bacteria, model systems for host-pathogen interactions were developed, which provide the possibility of quick and cost-effective high throughput screening of mutant bacteria for genes involved in pathogenesis. A number of different model systems, including amoeba, nematodes, insects, and fish, have been introduced, and it was observed that different bacteria respond in different ways to putative surrogate hosts, and distinct model systems might be more or less suitable for a certain pathogen. The aim of this study was to develop a suitable invertebrate model for the human and animal pathogens Corynebacterium diphtheriae, Corynebacterium pseudotuberculosis, and Corynebacterium ulcerans. The results obtained in this study indicate that Acanthamoeba polyphaga is not optimal as surrogate host, while both Caenorhabtitis elegans and Galleria larvae seem to offer tractable models for rapid assessment of virulence between strains. Caenorhabtitis elegans gives more differentiated results and might be the best model system for pathogenic corynebacteria, given the tractability of bacteria and the range of mutant nematodes available to investigate the host response in combination with bacterial virulence. Nevertheless, Galleria will also be useful in respect to innate immune responses to pathogens because insects offer a more complex cell-based innate immune system compared with the simple innate immune system of C. elegans.
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Affiliation(s)
- Lisa Ott
- Lehrstuhl für Mikrobiologie, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
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Pavan M, Robles C, Cairó F, Marcellino R, Pettinari M. Identification of Corynebacterium pseudotuberculosis from sheep by PCR-restriction analysis using the RNA polymerase β-subunit gene (rpoB). Res Vet Sci 2012; 92:202-6. [DOI: 10.1016/j.rvsc.2011.02.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2010] [Revised: 12/21/2010] [Accepted: 02/14/2011] [Indexed: 11/26/2022]
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Ruiz JC, D'Afonseca V, Silva A, Ali A, Pinto AC, Santos AR, Rocha AAMC, Lopes DO, Dorella FA, Pacheco LGC, Costa MP, Turk MZ, Seyffert N, Moraes PMRO, Soares SC, Almeida SS, Castro TLP, Abreu VAC, Trost E, Baumbach J, Tauch A, Schneider MPC, McCulloch J, Cerdeira LT, Ramos RTJ, Zerlotini A, Dominitini A, Resende DM, Coser EM, Oliveira LM, Pedrosa AL, Vieira CU, Guimarães CT, Bartholomeu DC, Oliveira DM, Santos FR, Rabelo ÉM, Lobo FP, Franco GR, Costa AF, Castro IM, Dias SRC, Ferro JA, Ortega JM, Paiva LV, Goulart LR, Almeida JF, Ferro MIT, Carneiro NP, Falcão PRK, Grynberg P, Teixeira SMR, Brommonschenkel S, Oliveira SC, Meyer R, Moore RJ, Miyoshi A, Oliveira GC, Azevedo V. Evidence for reductive genome evolution and lateral acquisition of virulence functions in two Corynebacterium pseudotuberculosis strains. PLoS One 2011; 6:e18551. [PMID: 21533164 PMCID: PMC3078919 DOI: 10.1371/journal.pone.0018551] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2010] [Accepted: 03/11/2011] [Indexed: 02/02/2023] Open
Abstract
Background Corynebacterium pseudotuberculosis, a Gram-positive, facultative intracellular pathogen, is the etiologic agent of the disease known as caseous lymphadenitis (CL). CL mainly affects small ruminants, such as goats and sheep; it also causes infections in humans, though rarely. This species is distributed worldwide, but it has the most serious economic impact in Oceania, Africa and South America. Although C. pseudotuberculosis causes major health and productivity problems for livestock, little is known about the molecular basis of its pathogenicity. Methodology and Findings We characterized two C. pseudotuberculosis genomes (Cp1002, isolated from goats; and CpC231, isolated from sheep). Analysis of the predicted genomes showed high similarity in genomic architecture, gene content and genetic order. When C. pseudotuberculosis was compared with other Corynebacterium species, it became evident that this pathogenic species has lost numerous genes, resulting in one of the smallest genomes in the genus. Other differences that could be part of the adaptation to pathogenicity include a lower GC content, of about 52%, and a reduced gene repertoire. The C. pseudotuberculosis genome also includes seven putative pathogenicity islands, which contain several classical virulence factors, including genes for fimbrial subunits, adhesion factors, iron uptake and secreted toxins. Additionally, all of the virulence factors in the islands have characteristics that indicate horizontal transfer. Conclusions These particular genome characteristics of C. pseudotuberculosis, as well as its acquired virulence factors in pathogenicity islands, provide evidence of its lifestyle and of the pathogenicity pathways used by this pathogen in the infection process. All genomes cited in this study are available in the NCBI Genbank database (http://www.ncbi.nlm.nih.gov/genbank/) under accession numbers CP001809 and CP001829.
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Affiliation(s)
- Jerônimo C. Ruiz
- Research Center René Rachou, Oswaldo Cruz Foundation, Belo Horizonte, Minas Gerais, Brazil
| | - Vívian D'Afonseca
- Department of General Biology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Artur Silva
- Department of Genetics, Federal University of Pará, Belém, Pará, Brazil
| | - Amjad Ali
- Department of General Biology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Anne C. Pinto
- Department of General Biology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Anderson R. Santos
- Department of General Biology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Aryanne A. M. C. Rocha
- Department of General Biology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Débora O. Lopes
- Health Sciences Center, Federal University of São João Del Rei, Divinópilis, Minas Gerais, Brazil
| | - Fernanda A. Dorella
- Department of General Biology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Luis G. C. Pacheco
- Department of General Biology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
- Department of Biointeraction Sciences, Federal University of Bahia, Salvador, Bahia, Brazil
| | - Marcília P. Costa
- Department of Veterinary Medicine, State University of Ceará, Fortaleza, Ceará, Brazil
| | - Meritxell Z. Turk
- Department of General Biology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Núbia Seyffert
- Department of General Biology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Pablo M. R. O. Moraes
- Department of General Biology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Siomar C. Soares
- Department of General Biology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Sintia S. Almeida
- Department of General Biology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Thiago L. P. Castro
- Department of General Biology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Vinicius A. C. Abreu
- Department of General Biology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Eva Trost
- Department of Genetics, University of Bielefeld, CeBiTech, Bielefeld, Nordrhein-Westfale, Germany
| | - Jan Baumbach
- Department of Computer Science, Max-Planck-Institut für Informatik, Saarbrücken, Saarlan, Germany
| | - Andreas Tauch
- Department of Genetics, University of Bielefeld, CeBiTech, Bielefeld, Nordrhein-Westfale, Germany
| | | | - John McCulloch
- Department of Genetics, Federal University of Pará, Belém, Pará, Brazil
| | | | | | - Adhemar Zerlotini
- Research Center René Rachou, Oswaldo Cruz Foundation, Belo Horizonte, Minas Gerais, Brazil
| | - Anderson Dominitini
- Research Center René Rachou, Oswaldo Cruz Foundation, Belo Horizonte, Minas Gerais, Brazil
| | - Daniela M. Resende
- Research Center René Rachou, Oswaldo Cruz Foundation, Belo Horizonte, Minas Gerais, Brazil
- Department of Pharmaceutical Sciences, Federal University of Ouro Preto, Ouro Preto, Minas Gerais, Brazil
| | - Elisângela M. Coser
- Research Center René Rachou, Oswaldo Cruz Foundation, Belo Horizonte, Minas Gerais, Brazil
| | - Luciana M. Oliveira
- Department of Phisics, Federal University of Ouro Preto, Ouro Preto, Minas Gerais, Brazil
| | - André L. Pedrosa
- Department of Pharmaceutical Sciences, Federal University of Ouro Preto, Ouro Preto, Minas Gerais, Brazil
- Department of Biological Sciences, Federal University of Triangulo Mineiro, Uberaba, Minas Gerais, Brazil
| | - Carlos U. Vieira
- Department of Genetics and Biochemistry, Federal University of Uberlândia, Uberlândia, Minas Gerais, Brazil
| | - Cláudia T. Guimarães
- Brazilian Agricultural Research Corporation (EMBRAPA), Sete Lagoas, Minas Gerais, Brazil
| | - Daniela C. Bartholomeu
- Department of Biochemistry and Immunology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Diana M. Oliveira
- Department of Veterinary Medicine, State University of Ceará, Fortaleza, Ceará, Brazil
| | - Fabrício R. Santos
- Department of General Biology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Élida Mara Rabelo
- Department of Parasitology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Francisco P. Lobo
- Department of Biochemistry and Immunology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Glória R. Franco
- Department of Biochemistry and Immunology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Ana Flávia Costa
- Department of General Biology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Ieso M. Castro
- Department of Pharmacy, Federal University of Ouro Preto, Ouro Preto, Minas Gerais, Brazil
| | - Sílvia Regina Costa Dias
- Department of Parasitology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Jesus A. Ferro
- Department of Technology, State University of São Paulo, Jaboticabal, São Paulo, Brazil
| | - José Miguel Ortega
- Department of Biochemistry and Immunology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Luciano V. Paiva
- Department of Chemistry, Federal University of Lavras, Lavras, Minas Gerais, Brazil
| | - Luiz R. Goulart
- Department of Genetics and Biochemistry, Federal University of Uberlândia, Uberlândia, Minas Gerais, Brazil
| | - Juliana Franco Almeida
- Department of Genetics and Biochemistry, Federal University of Uberlândia, Uberlândia, Minas Gerais, Brazil
| | - Maria Inês T. Ferro
- Department of Technology, State University of São Paulo, Jaboticabal, São Paulo, Brazil
| | - Newton P. Carneiro
- Brazilian Agricultural Research Corporation (EMBRAPA), Sete Lagoas, Minas Gerais, Brazil
| | - Paula R. K. Falcão
- Brazilian Agricultural Research Corporation (EMBRAPA), Campinas, São Paulo, Brazil
| | - Priscila Grynberg
- Department of Biochemistry and Immunology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Santuza M. R. Teixeira
- Department of Biochemistry and Immunology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Sérgio Brommonschenkel
- Department of Plant Pathology, Federal University of Viçosa, Viçosa, Minas Gerais, Brazil
| | - Sérgio C. Oliveira
- Department of Biochemistry and Immunology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Roberto Meyer
- Department of Biointeraction Sciences, Federal University of Bahia, Salvador, Bahia, Brazil
| | | | - Anderson Miyoshi
- Department of General Biology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Guilherme C. Oliveira
- Research Center René Rachou, Oswaldo Cruz Foundation, Belo Horizonte, Minas Gerais, Brazil
- Center of Excellence in Bioinformatics, National Institute of Science and Technology, Research Center René Rachou, Oswaldo Cruz Foundation, Belo Horizonte, Minas Gerais, Brazil
| | - Vasco Azevedo
- Department of General Biology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
- * E-mail:
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Targeted allele replacement mutagenesis of Corynebacterium pseudotuberculosis. Appl Environ Microbiol 2011; 77:3532-5. [PMID: 21421779 DOI: 10.1128/aem.01740-10] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
A two-step allele replacement mutagenesis procedure, using a conditionally replicating plasmid, was developed to allow the creation of targeted, marker-free mutations in Corynebacterium pseudotuberculosis. The relationship between homologous sequence length and recombination frequency was determined, and enhanced plasmid excision was observed due to the rolling-circle replication of the mutagenesis vector. Furthermore, an antibiotic enrichment procedure was applied to improve the recovery of mutants. Subsequently, as proof of concept, a marker-free, cp40-deficient mutant of C. pseudotuberculosis was constructed.
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Trost E, Ott L, Schneider J, Schröder J, Jaenicke S, Goesmann A, Husemann P, Stoye J, Dorella FA, Rocha FS, Soares SDC, D'Afonseca V, Miyoshi A, Ruiz J, Silva A, Azevedo V, Burkovski A, Guiso N, Join-Lambert OF, Kayal S, Tauch A. The complete genome sequence of Corynebacterium pseudotuberculosis FRC41 isolated from a 12-year-old girl with necrotizing lymphadenitis reveals insights into gene-regulatory networks contributing to virulence. BMC Genomics 2010; 11:728. [PMID: 21192786 PMCID: PMC3022926 DOI: 10.1186/1471-2164-11-728] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2010] [Accepted: 12/30/2010] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Corynebacterium pseudotuberculosis is generally regarded as an important animal pathogen that rarely infects humans. Clinical strains are occasionally recovered from human cases of lymphadenitis, such as C. pseudotuberculosis FRC41 that was isolated from the inguinal lymph node of a 12-year-old girl with necrotizing lymphadenitis. To detect potential virulence factors and corresponding gene-regulatory networks in this human isolate, the genome sequence of C. pseudotuberculosis FCR41 was determined by pyrosequencing and functionally annotated. RESULTS Sequencing and assembly of the C. pseudotuberculosis FRC41 genome yielded a circular chromosome with a size of 2,337,913 bp and a mean G+C content of 52.2%. Specific gene sets associated with iron and zinc homeostasis were detected among the 2,110 predicted protein-coding regions and integrated into a gene-regulatory network that is linked with both the central metabolism and the oxidative stress response of FRC41. Two gene clusters encode proteins involved in the sortase-mediated polymerization of adhesive pili that can probably mediate the adherence to host tissue to facilitate additional ligand-receptor interactions and the delivery of virulence factors. The prominent virulence factors phospholipase D (Pld) and corynebacterial protease CP40 are encoded in the genome of this human isolate. The genome annotation revealed additional serine proteases, neuraminidase H, nitric oxide reductase, an invasion-associated protein, and acyl-CoA carboxylase subunits involved in mycolic acid biosynthesis as potential virulence factors. The cAMP-sensing transcription regulator GlxR plays a key role in controlling the expression of several genes contributing to virulence. CONCLUSION The functional data deduced from the genome sequencing and the extended knowledge of virulence factors indicate that the human isolate C. pseudotuberculosis FRC41 is equipped with a distinct gene set promoting its survival under unfavorable environmental conditions encountered in the mammalian host.
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Affiliation(s)
- Eva Trost
- Institut für Genomforschung und Systembiologie, Centrum für Biotechnologie, Universität Bielefeld, Bielefeld, Germany
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Caseous lymphadenitis in sheep flocks of the state of Minas Gerais, Brazil: Prevalence and management surveys. Small Rumin Res 2009. [DOI: 10.1016/j.smallrumres.2009.09.027] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Bonmarin I, Guiso N, Le Flèche-Matéos A, Patey O, Patrick ADG, Levy-Bruhl D. Diphtheria: a zoonotic disease in France? Vaccine 2009; 27:4196-200. [PMID: 19393707 DOI: 10.1016/j.vaccine.2009.04.048] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2008] [Revised: 04/01/2009] [Accepted: 04/16/2009] [Indexed: 11/28/2022]
Abstract
Thanks to vaccination, diphtheria has almost disappeared in France. The case definition, used for mandatory notification, was expanded in 2003 to include toxin-producing strains of Corynebacterium ulcerans. We describe the epidemiology of diphtheria in France from 1990 to 2008. No cases occurred between 1990 and 2001. Since 2002, 19 cases have been reported: 4 cases due to Corynebacterium diphtheriae related to exposure in endemic countries, and 15 cases due to other corynebacteria, including 4 cases of pseudomembranous pharyngitis, mainly related to contact with domestic animals. High vaccination coverage in the population and sensitive surveillance need to be maintained. Moreover, control measures need to be adapted to the non-C. diphtheriae toxigenic species.
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Affiliation(s)
- Isabelle Bonmarin
- Institut de veille sanitaire, 12 rue du Val d'Osne, 94415 St Maurice, France.
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Baird GJ, Fontaine MC. Corynebacterium pseudotuberculosis and its role in ovine caseous lymphadenitis. J Comp Pathol 2007; 137:179-210. [PMID: 17826790 DOI: 10.1016/j.jcpa.2007.07.002] [Citation(s) in RCA: 155] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2006] [Accepted: 07/10/2007] [Indexed: 10/22/2022]
Abstract
Caseous lymphadenitis (CLA) of sheep, caused by Corynebacterium pseudotuberculosis, has been a significant disease in the majority of sheep-rearing regions for over a century. Because of the chronic and often sub-clinical nature of the infection, it has proved difficult to control and prevalence is high in many parts of the world, which in turn leads to significant economic losses for farmers. This review describes the important characteristics of C. pseudotuberculosis and examines the pathogenesis and epidemiology of the infection in sheep. The review also discusses the immune response to infection and describes the methods that have been developed to control CLA, with particular emphasis on the use of vaccination and serological testing.
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Affiliation(s)
- G J Baird
- Scottish Agricultural College Veterinary Services, 5 Bertha Park View, Perth PH1 3FZ.
| | - M C Fontaine
- Moredun Research Institute, International Research Centre, Pentlands Science Park, Bush Loan, Penicuik EH26 0PZ, Scotland, UK
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Holmes NE, Korman TM. Corynebacterium kutscheri infection of skin and soft tissue following rat bite. J Clin Microbiol 2007; 45:3468-9. [PMID: 17670928 PMCID: PMC2045315 DOI: 10.1128/jcm.00607-07] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Corynebacterium kutscheri is a common bacterium isolated from the oral cavity of healthy mice and rats. We report the first well-documented case of C. kutscheri human infection which followed a rat bite. The microorganism was identified by conventional biochemical tests and confirmed by 16S rRNA gene sequence analysis.
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Affiliation(s)
- Natasha E Holmes
- Department of Infectious Diseases, Monash Medical Centre, 246 Clayton Road, Clayton, Victoria 3168, Australia
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