1
|
Tavakoli-Koopaei R, Javadi-Zarnaghi F, Aboutalebian S, Mirhendi H. Malachite Green-Based Detection of SARS-CoV-2 by One-Step Reverse Transcription Loop-Mediated Isothermal Amplification. IRANIAN JOURNAL OF SCIENCE 2023. [PMCID: PMC9898859 DOI: 10.1007/s40995-022-01392-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
The pandemic of severe acute respiratory syndrome 2 (SARS-CoV-2) revealed the necessity of diagnosis of the infected people to prevent the prevalence infection cycle. Many commercial pathogen diagnosis methods are based on the detection of genomic materials. Isothermal amplification methods such as loop-mediated-isothermal amplification (LAMP) are the method of choice in these cases. Reverse transcription steps are efficiently coupled to LAMP for the detection of pathogens with genomic RNAs such as SARS-CoV-2. Many detection systems for LAMP include fluorescent readout systems. Although such systems result in desirable limits of detection, the need for special instrumentation is the main dispute of such systems to become real point of care assays. In contrast, colorimetric detection methods would reduce costs and improve the applicability of the system. In this study one-step reverse transcription-LAMP reaction was established that enables visual detection of the SARS-CoV-2 genome. Nasopharyngeal RNA samples were first validated by reverse transcription quantitative polymerase chain reaction and then subjected to RT-LAMP. To lower the cost associated with the readout system equipment, malachite green (MG) was used. The color change of MG to blue allowed visual detection of the virus. Firstly, experiments were set up as two-step RT-LAMP reaction to identify the best primer sets. In addition, MG concentration was optimized with the significant colorimetric signal for the positive samples. Next, a one-step colorimetric method was developed for the detection of SARS-CoV-2 based on MG color shift in 2 h.
Collapse
Affiliation(s)
- Reyhaneh Tavakoli-Koopaei
- grid.411750.60000 0001 0454 365XDepartment of Cell and Molecular Biology & Microbiology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan, Iran
| | - Fatemeh Javadi-Zarnaghi
- grid.411750.60000 0001 0454 365XDepartment of Cell and Molecular Biology & Microbiology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan, Iran
| | - Shima Aboutalebian
- grid.411036.10000 0001 1498 685XDepartment of Medical Parasitology and Mycology, School of Medicine, Research Core Facilities Laboratory, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Hossein Mirhendi
- grid.411036.10000 0001 1498 685XDepartment of Medical Parasitology and Mycology, School of Medicine, Research Core Facilities Laboratory, Isfahan University of Medical Sciences, Isfahan, Iran
| |
Collapse
|
2
|
Development of a loop-mediated isothermal amplification (LAMP) assay for molecular identification of Trueperella abortisuis isolated from pigs. Mol Cell Probes 2022; 62:101795. [DOI: 10.1016/j.mcp.2022.101795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 01/19/2022] [Accepted: 02/02/2022] [Indexed: 11/21/2022]
|
3
|
Alssahen M, Foster G, Hassan AA, Rau J, Lämmler C, Prenger-Berninghoff E, Eisenberg T, Robinson M, Abdulmawjood A. First isolation of Arcanobacterium pinnipediorum from a grey seal pup (Halichoerus grypus) in the UK. Folia Microbiol (Praha) 2021; 67:291-297. [PMID: 34825291 PMCID: PMC8933365 DOI: 10.1007/s12223-021-00932-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Accepted: 11/08/2021] [Indexed: 12/03/2022]
Abstract
In the present study, a single Arcanobacterium (A.) pinnipediorum strain isolated from discharge of a jaw swelling of a grey seal pup (Halichoerus grypus) in England, UK, was identified. This strain was further characterized by phenotypical investigations, by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS), by Fourier transform infrared spectroscopy (FT-IR), and genotypically by sequencing the 16S rRNA gene and the genes gap encoding glyceraldehyde 3-phosphate dehydrogenase, tuf encoding elongation factor tu, and rpoB encoding the β subunit of bacterial RNA polymerase. The present study gives a first detailed characterization of the species A. pinnipediorum from a grey seal in the UK. However, the route of infection of the grey seal with the bacterial pathogen remains unclear.
Collapse
Affiliation(s)
- Mazen Alssahen
- Institut Für Hygiene Und Infektionskrankheiten Der Tiere, Justus-Liebig-Universität Giessen, Frankfurter Straße 85-91, Giessen, 35392, Germany.
| | - Geoffrey Foster
- SRUC Veterinary Services, 10 Inverness Campus, Inverness, An Lochran, IV2 5NA, UK
| | - Abdulwahed Ahmed Hassan
- Department of Veterinary Public Health (DVPH), College of Veterinary Medicine, Mosul University, Mosul, Iraq
| | - Jörg Rau
- Chemisches Und Veterinäruntersuchungsamt Stuttgart (CVUAS), Schaflandstraße 3/2, Fellbach, 70736, Germany
| | - Christoph Lämmler
- Institut Für Hygiene Und Infektionskrankheiten Der Tiere, Justus-Liebig-Universität Giessen, Frankfurter Straße 85-91, Giessen, 35392, Germany
| | - Ellen Prenger-Berninghoff
- Institut Für Hygiene Und Infektionskrankheiten Der Tiere, Justus-Liebig-Universität Giessen, Frankfurter Straße 85-91, Giessen, 35392, Germany
| | - Tobias Eisenberg
- Institut Für Hygiene Und Infektionskrankheiten Der Tiere, Justus-Liebig-Universität Giessen, Frankfurter Straße 85-91, Giessen, 35392, Germany.,Landesbetrieb Hessisches Landeslabor, Giessen, Schubertstraße 60, Giessen, 35392, Germany
| | - Mathew Robinson
- Axiom Veterinary Laboratories, Manor House, Brunel Road, Newton Abbot, TQ12 4PB, UK
| | - Amir Abdulmawjood
- Institute of Food Quality and Food Safety, Research Center for Emerging Infections and Zoonoses (RIZ), University of Veterinary Medicine Hannover, Bischofsholer Damm 15, Hannover, 30173, Germany
| |
Collapse
|
4
|
Ahmed MFE, Alssahen M, Lämmler C, Köhler B, Metzner M, Plötz M, Abdulmawjood A. Identification of Trueperella bernardiae isolated from peking ducks (Anas platyrhynchos domesticus) by phenotypical and genotypical investigations and by a newly developed loop-mediated isothermal amplification (LAMP) assay. Folia Microbiol (Praha) 2021; 67:277-284. [PMID: 34780047 PMCID: PMC8933347 DOI: 10.1007/s12223-021-00927-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Accepted: 10/19/2021] [Indexed: 12/03/2022]
Abstract
Trueperella (T.) bernardiae is a well-known bacterial pathogen in infections of humans, rarely in animals. In the present study, five T. bernardiae isolates, isolated from five Peking ducks of four different farms, were identified by phenotypic properties, by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) analysis, and genotypically by sequencing the 16S ribosomal RNA (rRNA) gene, the superoxide dismutase A encoding gene sodA, and the glyceraldehyde-3-phosphate dehydrogenase encoding gene gap. In addition, the T. bernardiae isolates could be identified with a newly developed loop-mediated isothermal amplification (LAMP) assay based on the gyrase encoding housekeeping gene gyrA. All these tests clearly identified the T. bernardiae isolates to the species level. However, the detection of the specific gene gyrA with the newly designed LAMP assay appeared with a high sensitivity and specificity, and could help to identify this bacterial species in human and animal infections in future. The importance of the T. bernardiae isolates for the clinical condition of the ducks and for the problems at farm level remains unclear.
Collapse
Affiliation(s)
- Marwa F E Ahmed
- Hygiene and Zoonoses Department, Faculty of Veterinary Medicine, Mansoura University, Elgomhoria Street 60, Mansoura, 35516, Egypt.,Institute for Animal Nutrition, University of Veterinary Medicine Hannover, Foundation, Bischofsholer Damm 15, 30173, Hannover, Germany
| | - Mazen Alssahen
- Institut für Hygiene und Infektionskrankheiten der Tiere, Justus-Liebig-Universität Gießen, Frankfurterstraße 85-91, 35392, Gießen, Germany
| | - Christoph Lämmler
- Institut für Hygiene und Infektionskrankheiten der Tiere, Justus-Liebig-Universität Gießen, Frankfurterstraße 85-91, 35392, Gießen, Germany
| | - Bernd Köhler
- Ripac-Labor GmbH, Am Mühlenberg 11, 14476, Potsdam, Germany
| | - Martin Metzner
- Ripac-Labor GmbH, Am Mühlenberg 11, 14476, Potsdam, Germany
| | - Madeleine Plötz
- Institute of Food Quality and Food Safety, University of Veterinary Medicine Hannover, Bischofsholer Damm 15, 30173, Hannover, Germany
| | - Amir Abdulmawjood
- Institute of Food Quality and Food Safety, University of Veterinary Medicine Hannover, Bischofsholer Damm 15, 30173, Hannover, Germany.
| |
Collapse
|
5
|
Ahmed MFE, Alssahen M, Lämmler C, Eisenberg T, Plötz M, Abdulmawjood A. Studies on Trueperella pyogenes isolated from an okapi (Okapia johnstoni) and a royal python (Python regius). BMC Vet Res 2020; 16:292. [PMID: 32795301 PMCID: PMC7427953 DOI: 10.1186/s12917-020-02508-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Accepted: 08/03/2020] [Indexed: 11/18/2022] Open
Abstract
Background The present study was designed to characterize phenotypically and genotypically two Trueperella pyogenes strains isolated from an okapi (Okapia johnstoni) and a royal python (Python regius). Case presentation The species identity could be confirmed by phenotypic properties, by MALDI-TOF MS analysis and by detection of T. pyogenes chaperonin-encoding gene cpn60 with a previously developed loop-mediated isothermal amplification (LAMP) assay. Furthermore, sequencing of the 16S ribosomal RNA (rRNA) gene, the 16S-23S rDNA intergenic spacer region (ISR), the target genes rpoB encoding the β-subunit of bacterial RNA polymerase, tuf encoding elongation factor tu and plo encoding the putative virulence factor pyolysin allowed the identification of both T. pyogenes isolates at species level. Conclusions Both strains could be clearly identified as T. pyogenes. The T. pyogenes strain isolated in high number from the vaginal discharge of an okapi seems to be of importance for the infectious process; the T. pyogenes strain from the royal python could be isolated from an apparently non-infectious process. However, both strains represent the first isolation of T. pyogenes from these animal species.
Collapse
Affiliation(s)
- Marwa F E Ahmed
- Hygiene and Zoonoses Department, Faculty of Veterinary Medicine, Mansoura University, Elgomhoria Street 60, 35516, Mansoura, Egypt
| | - Mazen Alssahen
- Institut für Hygiene und Infektionskrankheiten der Tiere, Justus-Liebig-Universität Gießen, Frankfurterstraße 85-91, D-35392, Gießen, Germany
| | - Christoph Lämmler
- Institut für Hygiene und Infektionskrankheiten der Tiere, Justus-Liebig-Universität Gießen, Frankfurterstraße 85-91, D-35392, Gießen, Germany
| | - Tobias Eisenberg
- Landesbetrieb Hessisches Landeslabor (LHL), Schubertstraße 60, D-35392, Gießen, Germany
| | - Madeleine Plötz
- Institute of Food Quality and Food Safety, Research Center for Emerging Infections and Zoonoses (RIZ), University of Veterinary Medicine Hannover, Bischofsholer Damm 15, D-30173, Hannover, Germany
| | - Amir Abdulmawjood
- Institute of Food Quality and Food Safety, Research Center for Emerging Infections and Zoonoses (RIZ), University of Veterinary Medicine Hannover, Bischofsholer Damm 15, D-30173, Hannover, Germany.
| |
Collapse
|
6
|
Alssahen M, Hassan AA, Sammra O, Lämmler C, Saarnisto MR, Borowiak M, Malorny B, Rau J, Prenger-Berninghoff E, Plötz M, Abdulmawjood A. Epidemiological analysis of Arcanobacterium phocae isolated from cases of mink dermatitis of a single farm. Vet Microbiol 2020; 243:108618. [PMID: 32273004 DOI: 10.1016/j.vetmic.2020.108618] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 02/21/2020] [Accepted: 02/21/2020] [Indexed: 11/17/2022]
Abstract
The present study was designed to identify nine Arcanobacterium phocae strains isolated from cases of mink dermatitis of a single farm in Finland and characterize the strains for epidemiological relationships. All nine strains and previously described A. phocae used for comparative purposes were identified and further characterized phenotypically, by matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS), by Fourier Transform Infrared Spectroscopy (FT-IR) and genotypically by detection of phocaelysin encoding gene phl with a previously developed loop-mediated isothermal amplification (LAMP) assay and by sequencing 16S rRNA gene and gene phl, the elongation factor tu encoding gene tuf and the β subunit of bacterial RNA polymerase encoding gene rpoB. Genetic relatedness among isolates was determined using whole-genome single nucleotide polymorphism (wgSNP) analysis. The wgSNP results, partly the MALDI-TOF MS and FT-IR analyses and sequencing of the genes, revealed that the nine A. phocae strains recovered from a single farm showed close sequence similarities among each other and differed from previously investigated A. phocae strains isolated from other farms and animals in Finland and from the A. phocae type strain. This indicated a close epidemiological relationship of the A. phocae strains isolated from a single farm and that the nine A. phocae strains of the present study might have developed from a common ancestor.
Collapse
Affiliation(s)
- Mazen Alssahen
- Institut für Hygiene und Infektionskrankheiten der Tiere, Justus-Liebig-Universität Gießen, Frankfurter Straße 85-91, 35392 Gießen, Germany
| | - Abdulwahed Ahmed Hassan
- Institut für Hygiene und Infektionskrankheiten der Tiere, Justus-Liebig-Universität Gießen, Frankfurter Straße 85-91, 35392 Gießen, Germany
| | - Osama Sammra
- Institut für Hygiene und Infektionskrankheiten der Tiere, Justus-Liebig-Universität Gießen, Frankfurter Straße 85-91, 35392 Gießen, Germany
| | - Christoph Lämmler
- Institut für Hygiene und Infektionskrankheiten der Tiere, Justus-Liebig-Universität Gießen, Frankfurter Straße 85-91, 35392 Gießen, Germany.
| | - Mirja Raunio Saarnisto
- The Research and Laboratory Services Department, Veterinary Bacteriology and Pathology Research Unit, Finnish Food Safety Authority Evira, Keskuskatu 23, 60100 Seinäjoki, Finland
| | - Maria Borowiak
- German Federal Institute for Risk Assessment (BfR), Department for Biological Safety, Berlin, Max-Dohrn Str. 8-10, 10589 Berlin, Germany
| | - Burkhard Malorny
- German Federal Institute for Risk Assessment (BfR), Department for Biological Safety, Berlin, Max-Dohrn Str. 8-10, 10589 Berlin, Germany
| | - Jörg Rau
- Chemisches und Veterinäruntersuchungsamt Stuttgart (CVUAS), Schaflandstraße 3/2, 70736 Fellbach, Germany
| | - Ellen Prenger-Berninghoff
- Institut für Hygiene und Infektionskrankheiten der Tiere, Justus-Liebig-Universität Gießen, Frankfurter Straße 85-91, 35392 Gießen, Germany
| | - Madelein Plötz
- Institute of Food Quality and Food Safety, Research Center for Emerging Infections and Zoonoses (RIZ), University of Veterinary Medicine Hannover, Bischofsholer Damm 15, 30173 Hannover, Germany
| | - Amir Abdulmawjood
- Institute of Food Quality and Food Safety, Research Center for Emerging Infections and Zoonoses (RIZ), University of Veterinary Medicine Hannover, Bischofsholer Damm 15, 30173 Hannover, Germany
| |
Collapse
|
7
|
Yushina Y, Makhova A, Zayko E, Bataeva D. Loop-mediated isothermal amplification (LAMP) for rapid detection of L. monocytogenes in meat. POTRAVINARSTVO 2019. [DOI: 10.5219/1165] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
There is a continued need to develop improved rapid methods for detection of foodborne pathogens. Rapid and sensitive methods for enumeration of Listeria monocytogenes are important for microbiological food safety testing purpose. The aim of this project was to evaluate a commercial loop-mediated isothermal amplification (LAMP) based system with bioluminescence, named as 3M™ Molecular Detection Assay (MDA), was validated for the detection of L. monocytogenes in food products with a standard GOST 32031-2012 method as reference. The results of this study revealed that a commercial LAMP-based method performed equally effective compared with method, showing from 94% to 100% specificity and sensitivity, respectively. The LAMP-based method was shown to be rapid and reliable detection technique for L. monocytogenes present at low numbers (10 CFU.g-1) on raw meat and meat products and can be applicable in meat industry. Thus, compared with the microbiological method based GOST 32031-2012, the LAMP assay is a relatively rapid and highly sensitive method for detecting L. monocytogenes and will facilitate the surveillance for contamination of L. monocytogenes in food. The 3M MDS result and culture-based detection (GOST 32031-2012) did not differ significantly (p >0.05) regarding the number of positive samples.
Collapse
|
8
|
Pathogenicity and Virulence of Trueperella pyogenes: A Review. Int J Mol Sci 2019; 20:ijms20112737. [PMID: 31167367 PMCID: PMC6600626 DOI: 10.3390/ijms20112737] [Citation(s) in RCA: 96] [Impact Index Per Article: 19.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Revised: 05/31/2019] [Accepted: 05/31/2019] [Indexed: 12/19/2022] Open
Abstract
Bacteria from the species Trueperella pyogenes are a part of the biota of skin and mucous membranes of the upper respiratory, gastrointestinal, or urogenital tracts of animals, but also, opportunistic pathogens. T. pyogenes causes a variety of purulent infections, such as metritis, mastitis, pneumonia, and abscesses, which, in livestock breeding, generate significant economic losses. Although this species has been known for a long time, many questions concerning the mechanisms of infection pathogenesis, as well as reservoirs and routes of transmission of bacteria, remain poorly understood. Pyolysin is a major known virulence factor of T. pyogenes that belongs to the family of cholesterol-dependent cytolysins. Its cytolytic activity is associated with transmembrane pore formation. Other putative virulence factors, including neuraminidases, extracellular matrix-binding proteins, fimbriae, and biofilm formation ability, contribute to the adhesion and colonization of the host tissues. However, data about the pathogen–host interactions that may be involved in the development of T. pyogenes infection are still limited. The aim of this review is to present the current knowledge about the pathogenic potential and virulence of T. pyogenes.
Collapse
|
9
|
Cai S, Jung C, Bhadra S, Ellington AD. Phosphorothioated Primers Lead to Loop-Mediated Isothermal Amplification at Low Temperatures. Anal Chem 2018; 90:8290-8294. [PMID: 29968462 DOI: 10.1021/acs.analchem.8b02062] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Loop-mediated isothermal amplification (LAMP) is an extremely powerful tool for the detection of nucleic acids with high sensitivity and specificity. However, LAMP shows optimal performance at around 65 °C, which limits applications in point-of-care-testing (POCT). Here, we have developed a version of LAMP that uses phosphorothioated primers (PS-LAMP) to enable more efficient hairpin formation and extension at the termini of growing concatamers, and that therefore works at much lower temperatures. By including additional factors such as chaotropes (urea) and single-stranded DNA binding protein (SSB), the sensitivities and selectivities for amplicon detection with PS-LAMP at 40 °C were comparable with a regular LAMP reaction at 65 °C.
Collapse
Affiliation(s)
- Sheng Cai
- Laboratory of Pharmaceutical Analysis and Drug Metabolism, Zhejiang Province Key Laboratory of Anti-Cancer Drug Research , Zhejiang University , Hangzhou , Zhejiang 310058 , China
| | - Cheulhee Jung
- Division of Biotechnology , College of Life Sciences and Biotechnology, Korea University , Seoul 02841 , Republic of Korea
| | - Sanchita Bhadra
- Institute for Cellular and Molecular Biology, Department of Molecular Biosciences , University of Texas at Austin , Austin , Texas 78712 , United States
| | - Andrew D Ellington
- Institute for Cellular and Molecular Biology, Department of Molecular Biosciences , University of Texas at Austin , Austin , Texas 78712 , United States
| |
Collapse
|
10
|
Garrido-Maestu A, Azinheiro S, Carvalho J, Fuciños P, Prado M. Development and evaluation of loop-mediated isothermal amplification, and Recombinase Polymerase Amplification methodologies, for the detection of Listeria monocytogenes in ready-to-eat food samples. Food Control 2018. [DOI: 10.1016/j.foodcont.2017.11.006] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
|
11
|
Trueperella pyogenes and Brucella abortus Coinfection in a Dog and a Cat on a Dairy Farm in Egypt with Recurrent Cases of Mastitis and Abortion. Vet Med Int 2018; 2018:2056436. [PMID: 29755726 PMCID: PMC5884020 DOI: 10.1155/2018/2056436] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Accepted: 02/11/2018] [Indexed: 11/30/2022] Open
Abstract
Trueperella pyogenes was isolated from a dog and a cat with a mixed infection with Brucella abortus. Both lived on a dairy cattle farm with a history of regular cases of abortion and mastitis. Identification of the bacteria was done by means of MALDI-TOF MS, loop-mediated isothermal amplification (LAMP) based on cpn60, partial 16S rRNA sequencing, and growth on Loeffler Serum Medium. Isolation of Trueperella pyogenes on the dairy farm highlights its neglected role in reproduction failure and draws attention to its effects in the dairy industry in Egypt. Diagnosis and control of abortion in Egypt should include Trueperella pyogenes as one of possible causes of abortion.
Collapse
|
12
|
Alssahen M, Sammra O, Wickhorst JP, Hassan AA, Lämmler C, Saarnisto MR, Prenger-Berninghoff E, Timke M, Becker A, Abdulmawjood A. Identification of Arcanobacterium phocae isolated from fur animals by phenotypic properties, by MALDI-TOF MS analysis and by detection of phocaelysin encoding gene phl as probable novel target. Vet Microbiol 2018. [PMID: 29519524 DOI: 10.1016/j.vetmic.2018.01.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
In the present study 12 Arcanobacterium phocae strains isolated from fur animals in Finland, including foxes, minks and Finnraccoons, could successfully be identified phenotypically, by matrix-assisted laser desorption ionisation-time of flight mass spectrometry (MALDI-TOF MS) and genotypically by sequencing 16S rDNA and phocaelysin (PHL) encoding gene phl. The PHL of all 12 A. phocae strains in the present study and reference strains A. phocae DSM 10002T and A. phocae DSM 10003 displayed, as typical members of the cholesterol dependent cytolysin-group of toxins, the variant undecapeptide sequence EATGLAWDPWW which appeared to be most closely related to arcanolysin of Arcanobacterium haemolyticum and pyolysin of Trueperella pyogenes. In addition, gene phl could be determined with a newly designed loop-mediated isothermal amplification (LAMP) assay. The detection of mass spectra by MALDI-TOF MS and the LAMP assay based on gene phl might help to reliably identify A. phocae in future and also elucidate the role this species plays in infections of fur animals.
Collapse
Affiliation(s)
- Mazen Alssahen
- Institut für Pharmakologie und Toxikologie, Justus-Liebig-Universität Gießen, Schubertstraße 81, D-35392 Gießen, Germany; Institut für Tierärztliche Nahrungsmittelkunde, Justus-Liebig-Universität Gießen, Frankfurter Straße 92, D-35392 Gießen, Germany
| | - Osama Sammra
- Institut für Pharmakologie und Toxikologie, Justus-Liebig-Universität Gießen, Schubertstraße 81, D-35392 Gießen, Germany; Institut für Hygiene und Infektionskrankheiten der Tiere, Justus-Liebig-Universität Gießen, Frankfurter Straße 85-91, D-35392 Gießen, Germany
| | - Jörn-Peter Wickhorst
- Institut für Pharmakologie und Toxikologie, Justus-Liebig-Universität Gießen, Schubertstraße 81, D-35392 Gießen, Germany
| | - Abdulwahed Ahmed Hassan
- Institut für Tierärztliche Nahrungsmittelkunde, Justus-Liebig-Universität Gießen, Frankfurter Straße 92, D-35392 Gießen, Germany
| | - Christoph Lämmler
- Institut für Pharmakologie und Toxikologie, Justus-Liebig-Universität Gießen, Schubertstraße 81, D-35392 Gießen, Germany.
| | - Mirja Raunio Saarnisto
- The Research and Laboratory Services Department, Veterinary Bacteriology and Pathology Research Unit, Finnish Food Safety Authority Evira, Keskuskatu 23, 60100 Seinäjoki, Finland
| | - Ellen Prenger-Berninghoff
- Institut für Hygiene und Infektionskrankheiten der Tiere, Justus-Liebig-Universität Gießen, Frankfurter Straße 85-91, D-35392 Gießen, Germany
| | - Markus Timke
- Entwicklung Bioanalyse, Bruker Daltonik GmbH, Fahrenheitstraße 4, D-28359 Bremen, Germany
| | - Andrè Becker
- Institute of Food Quality and Food Safety, Research Center for Emerging Infections and Zoonoses (RIZ), University of Veterinary Medicine Hannover, Foundation, Bünteweg 17, D-30559 Hannover, Germany
| | - Amir Abdulmawjood
- Institute of Food Quality and Food Safety, Research Center for Emerging Infections and Zoonoses (RIZ), University of Veterinary Medicine Hannover, Foundation, Bünteweg 17, D-30559 Hannover, Germany
| |
Collapse
|
13
|
Trueperella pyogenes isolated from a brain abscess of an adult roebuck (Capreolus capreolus). Folia Microbiol (Praha) 2017; 63:17-22. [PMID: 28534230 DOI: 10.1007/s12223-017-0533-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Accepted: 05/16/2017] [Indexed: 10/19/2022]
Abstract
The present study was designed to characterize phenotypically and genotypically a Trueperella pyogenes strain isolated from a brain abscess of an adult roebuck (Capreolus capreolus). The species identity could be confirmed by phenotypical investigations, by MALDI-TOF MS analysis, and by sequencing the 16S ribosomal RNA (rRNA) gene, the 16S-23S rRNA intergenic spacer region (ISR); by sequencing the target genes rpoB, gap, and tuf; and by detection of T. pyogenes chaperonin-encoding gene cpn60 with a previously developed loop-mediated isothermal amplification (LAMP) assay. The T. pyogenes strain could additionally be characterized by PCR-mediated amplification of several known and putative virulence factor-encoding genes which revealed the presence of the genes plo encoding pyolysin and nanH and nanP encoding neuraminidases; the genes fimA, fimC, and fimE encoding the fimbrial subunits FimA, FimC, and FimE; and the gene cbpA encoding collagen-binding protein CbpA. The present data give a detailed characterization of a T. pyogenes strain isolated from a brain abscess of a roebuck. However, the route of infection of the roebuck remains unclear.
Collapse
|
14
|
Zhao K, Li W, Huang T, Song X, Zhang X, Yue B. Comparative transcriptome analysis of Trueperella pyogenes reveals a novel antimicrobial strategy. Arch Microbiol 2017; 199:649-655. [DOI: 10.1007/s00203-017-1338-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Revised: 01/04/2017] [Accepted: 01/07/2017] [Indexed: 11/29/2022]
|