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Ruano ZM, Mateus TL, Chorense A, Santos-Silva S, Vieira-Pinto M. Seroprevalence study of brucellosis in wild boar hunted for private consumption in northeast Portugal. Vet Res Commun 2024; 48:1859-1865. [PMID: 38315322 PMCID: PMC11147839 DOI: 10.1007/s11259-024-10317-z] [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: 11/01/2023] [Accepted: 01/25/2024] [Indexed: 02/07/2024]
Abstract
Brucellosis is an important infectious disease caused by bacteria of the genus Brucella. In the northeast region of Portugal, infection with Brucella melitensis is endemic in small ruminants, and there are also humans' cases. However, the epidemiological role of the wild boar in the dynamics of this disease in this region is unknown. In this study, a total of 332 blood samples were collected from wild boar hunted in thirty-six hunting areas during the 2022/2023 hunting season. All were taken by the hunters for private consumption, with no evisceration or examination in the field. Serum samples were tested by indirect ELISA (i-ELISA). It was observed that 88 wild boars were exposed to Brucella spp., pointing to a seroprevalence of 26.5% (95% CI: 21.8 - 31.3%). This high prevalence underlines the importance that wild boar may have in the dynamics of this disease in the region and its potential transmission to other animals, and to humans (for example, during the handling of carcasses). Increased awareness and knowledge of brucellosis in wild boar is essential for the implementation of effective practices and habits and, consequently, for the control and prevention of this important zoonosis.
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Affiliation(s)
- Zita Martins Ruano
- Veterinary and Animal Research Center (CECAV), University of Trás-os-Montes e Alto Douro, Quinta de Prados, Apartado 1013, Vila Real, 5001-801, Portugal
| | - Teresa Letra Mateus
- Veterinary and Animal Research Center (CECAV), University of Trás-os-Montes e Alto Douro, Quinta de Prados, Apartado 1013, Vila Real, 5001-801, Portugal.
- Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), Lisbon, Portugal.
- Center for Research and Development in Agrifood Systems ad Sustainability (CISAS), Escola Superior Agrária, Instituto Politécnico de Viana do Castelo, Viana do Castelo, 4900-347, Portugal.
- EpiUnit - Instituto de Saúde Pública da Universidade do Porto, Laboratório para a investigação integrativa e translacional em saúde populacional (ITR), Universidade do Porto, Rua das Taipas, nº135, 4050-091, Porto, Portugal.
| | - Ana Chorense
- Department of Veterinary Sciences, University of Trás-os-Montes e Alto Douro, Quinta de Prados, Apartado 1013, 5001-801, Vila Real, Portugal
| | - Sérgio Santos-Silva
- School of Medicine and Biomedical Sciences (ICBAS), University of Porto, Porto, Portugal
| | - Madalena Vieira-Pinto
- Veterinary and Animal Research Center (CECAV), University of Trás-os-Montes e Alto Douro, Quinta de Prados, Apartado 1013, Vila Real, 5001-801, Portugal
- Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), Lisbon, Portugal
- Center for Research and Development in Agrifood Systems ad Sustainability (CISAS), Escola Superior Agrária, Instituto Politécnico de Viana do Castelo, Viana do Castelo, 4900-347, Portugal
- Department of Veterinary Sciences, University of Trás-os-Montes e Alto Douro, Quinta de Prados, Apartado 1013, 5001-801, Vila Real, Portugal
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Papaparaskevas J, Procopiou A, Routsias J, Vrioni G, Tsakris A. Detection of Virulence-Associated Genes among Brucella melitensis and Brucella abortus Clinical Isolates in Greece, 2001-2022. Pathogens 2023; 12:1274. [PMID: 38003739 PMCID: PMC10675282 DOI: 10.3390/pathogens12111274] [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: 09/11/2023] [Revised: 10/13/2023] [Accepted: 10/20/2023] [Indexed: 11/26/2023] Open
Abstract
Brucellosis remains an important zoonotic disease in several parts of the world; in Greece, although it is declining, it is still endemic, affecting both the financial and public health sectors. The current study was undertaken to investigate the presence and distribution of virulence-associated genes among Brucella spp. clinical strains isolated during 2001-2022. Species identification was performed using conventional methodology and Bruce-ladder PCR. The presence of the virulence genes mviN, manA, wbkA, perA, omp19, ure, cbg and virB was investigated using PCR. During the study period, a total of 334 Brucella isolates were identified, of which 328 (98.2%) were detected from positive blood cultures; 315 (94.3%) of the isolates were identified as B. melitensis, whilst the remaining 16 (4.8%) and 3 (0.9%) were identified as B. abortus and B. suis, respectively. Notably, two of the B. melitensis were assigned to the REV-1 vaccine strain type. The presence of the omp19, manA, mviN and perA genes was confirmed in all 315 B. melitensis isolates, while ure, wbkA, cbg and virB genes were detected in all but 9, 2, 1 and 1 of the isolates, respectively. All eight virulence genes were amplified in all B. abortus and B. suis isolates. The detection rate of virulence genes did not differ significantly among species. In conclusion, brucellosis is still considered a prevailing zoonotic disease in Greece, with the majority of the isolates identified as B. melitensis. The eight pathogenicity-associated genes were present in almost all Brucella isolates, although the ure gene was absent from a limited number of B. melitensis isolates.
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Affiliation(s)
| | | | | | - Georgia Vrioni
- Department of Microbiology, Medical School, National and Kapodistrian University of Athens, 75 M. Asias Str., 11527 Athens, Greece; (J.P.); (A.P.); (J.R.); (A.T.)
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Grattarola C, Petrella A, Lucifora G, Di Francesco G, Di Nocera F, Pintore A, Cocumelli C, Terracciano G, Battisti A, Di Renzo L, Farina D, Di Francesco CE, Crescio MI, Zoppi S, Dondo A, Iulini B, Varello K, Mignone W, Goria M, Mattioda V, Giorda F, Di Guardo G, Janowicz A, Tittarelli M, De Massis F, Casalone C, Garofolo G. Brucella ceti Infection in Striped Dolphins from Italian Seas: Associated Lesions and Epidemiological Data. Pathogens 2023; 12:1034. [PMID: 37623994 PMCID: PMC10459742 DOI: 10.3390/pathogens12081034] [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: 07/19/2023] [Revised: 08/10/2023] [Accepted: 08/10/2023] [Indexed: 08/26/2023] Open
Abstract
Brucella ceti infections have been increasingly reported in cetaceans. In this study, we analyzed all cases of B. ceti infection detected in striped dolphins stranded along the Italian coastline between 2012 and 2021 (N = 24). We focused on the pathogenic role of B. ceti through detailed pathological studies, and ad hoc microbiological, biomolecular, and serological investigations, coupled with a comparative genomic analysis of the strains. Neurobrucellosis was observed in 20 animals. The primary histopathologic features included non-suppurative meningoencephalitis (N = 9), meningitis (N = 6), and meningoencephalomyelitis (N = 5), which was also associated with typical lesions in other tissues (N = 8). Co-infections were detected in more than half of the cases, mostly involving Cetacean Morbillivirus (CeMV). The 24 B. ceti isolates were assigned primarily to sequence type 26 (ST26) (N = 21) and, in a few cases, ST49 (N = 3). The multilocus sequence typing (cgMLST) based on whole genome sequencing (WGS) data showed that strains from Italy clustered into four genetically distinct clades. Plotting these clades onto a geographic map suggests a link between their phylogeny and the topographical distribution. These results support the role of B. ceti as a primary neurotropic pathogen for striped dolphins and highlight the utility of WGS data in understanding the evolution of this emerging pathogen.
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Affiliation(s)
- Carla Grattarola
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d’Aosta, 10154 Torino, Italy; (M.I.C.); (S.Z.); (A.D.); (B.I.); (K.V.); (W.M.); (M.G.); (V.M.); (F.G.); (C.C.)
| | - Antonio Petrella
- Istituto Zooprofilattico Sperimentale della Puglia e della Basilicata, 71121 Foggia, Italy; (A.P.); (D.F.)
| | - Giuseppe Lucifora
- Istituto Zooprofilattico Sperimentale del Mezzogiorno, 89852 Vibo Valentia, Italy;
| | - Gabriella Di Francesco
- Istituto Zooprofilattico Sperimentale dell’Abruzzo e del Molise, 64100 Teramo, Italy; (G.D.F.); (L.D.R.)
| | - Fabio Di Nocera
- Istituto Zooprofilattico Sperimentale del Mezzogiorno, 80055 Portici, Italy;
| | - Antonio Pintore
- Istituto Zooprofilattico Sperimentale della Sardegna, 07100 Sassari, Italy;
| | - Cristiano Cocumelli
- Istituto Zooprofilattico del Lazio e della Toscana, 00178 Roma, Italy; (C.C.); (A.B.)
| | | | - Antonio Battisti
- Istituto Zooprofilattico del Lazio e della Toscana, 00178 Roma, Italy; (C.C.); (A.B.)
| | - Ludovica Di Renzo
- Istituto Zooprofilattico Sperimentale dell’Abruzzo e del Molise, 64100 Teramo, Italy; (G.D.F.); (L.D.R.)
| | - Donatella Farina
- Istituto Zooprofilattico Sperimentale della Puglia e della Basilicata, 71121 Foggia, Italy; (A.P.); (D.F.)
| | | | - Maria Ines Crescio
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d’Aosta, 10154 Torino, Italy; (M.I.C.); (S.Z.); (A.D.); (B.I.); (K.V.); (W.M.); (M.G.); (V.M.); (F.G.); (C.C.)
| | - Simona Zoppi
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d’Aosta, 10154 Torino, Italy; (M.I.C.); (S.Z.); (A.D.); (B.I.); (K.V.); (W.M.); (M.G.); (V.M.); (F.G.); (C.C.)
| | - Alessandro Dondo
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d’Aosta, 10154 Torino, Italy; (M.I.C.); (S.Z.); (A.D.); (B.I.); (K.V.); (W.M.); (M.G.); (V.M.); (F.G.); (C.C.)
| | - Barbara Iulini
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d’Aosta, 10154 Torino, Italy; (M.I.C.); (S.Z.); (A.D.); (B.I.); (K.V.); (W.M.); (M.G.); (V.M.); (F.G.); (C.C.)
| | - Katia Varello
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d’Aosta, 10154 Torino, Italy; (M.I.C.); (S.Z.); (A.D.); (B.I.); (K.V.); (W.M.); (M.G.); (V.M.); (F.G.); (C.C.)
| | - Walter Mignone
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d’Aosta, 10154 Torino, Italy; (M.I.C.); (S.Z.); (A.D.); (B.I.); (K.V.); (W.M.); (M.G.); (V.M.); (F.G.); (C.C.)
| | - Maria Goria
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d’Aosta, 10154 Torino, Italy; (M.I.C.); (S.Z.); (A.D.); (B.I.); (K.V.); (W.M.); (M.G.); (V.M.); (F.G.); (C.C.)
| | - Virginia Mattioda
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d’Aosta, 10154 Torino, Italy; (M.I.C.); (S.Z.); (A.D.); (B.I.); (K.V.); (W.M.); (M.G.); (V.M.); (F.G.); (C.C.)
| | - Federica Giorda
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d’Aosta, 10154 Torino, Italy; (M.I.C.); (S.Z.); (A.D.); (B.I.); (K.V.); (W.M.); (M.G.); (V.M.); (F.G.); (C.C.)
| | - Giovanni Di Guardo
- Faculty of Veterinary Medicine, University of Teramo, 64100 Teramo, Italy; (C.E.D.F.); (G.D.G.)
| | - Anna Janowicz
- National and OIE Reference Laboratory for Brucellosis, Istituto Zooprofilattico Sperimentale dell’Abruzzo e del Molise, 64100 Teramo, Italy; (A.J.); (M.T.); (F.D.M.)
| | - Manuela Tittarelli
- National and OIE Reference Laboratory for Brucellosis, Istituto Zooprofilattico Sperimentale dell’Abruzzo e del Molise, 64100 Teramo, Italy; (A.J.); (M.T.); (F.D.M.)
| | - Fabrizio De Massis
- National and OIE Reference Laboratory for Brucellosis, Istituto Zooprofilattico Sperimentale dell’Abruzzo e del Molise, 64100 Teramo, Italy; (A.J.); (M.T.); (F.D.M.)
| | - Cristina Casalone
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d’Aosta, 10154 Torino, Italy; (M.I.C.); (S.Z.); (A.D.); (B.I.); (K.V.); (W.M.); (M.G.); (V.M.); (F.G.); (C.C.)
| | - Giuliano Garofolo
- National and OIE Reference Laboratory for Brucellosis, Istituto Zooprofilattico Sperimentale dell’Abruzzo e del Molise, 64100 Teramo, Italy; (A.J.); (M.T.); (F.D.M.)
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Girault G, Djokic V, Petot-Bottin F, Perrot L, Thibaut B, Sébastien H, Vicente AF, Ponsart C, Freddi L. Molecular Investigations of Two First Brucella suis Biovar 2 Infections Cases in French Dogs. Pathogens 2023; 12:792. [PMID: 37375482 DOI: 10.3390/pathogens12060792] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 05/22/2023] [Accepted: 05/30/2023] [Indexed: 06/29/2023] Open
Abstract
Despite Brucella suis biovar 2's (BSB2) active circulation in wildlife, no canine infections have been reported. The present paper is the first to describe two cases of BSB2 infections in French dogs. The first case occurred in 2020 and concerned a 13-year-old male neutered Border Collie with clinical signs of prostatitis. The urine culture revealed the excretion of significant levels of Brucella in the sample. The second case concerned a German Shepherd with bilateral orchitis, in which it was possible to detect Brucella colonies following neutering. HRM-PCR and classical biotyping methods classified both isolated strains as BSB2, in contrast to expected B. canis, which is usually the etiological agent of canine brucellosis in Europe. The wgSNP and MLVA analyses highlighted the genetic proximity of two isolates to BSB2 strains originating from wildlife. No pig farms were present in the proximity of either dog's residence, ruling out potential spill over from infected pigs. Nevertheless, the dogs used to take walks in the surrounding forests, where contact with wildlife (i.e., wild boars or hares, or their excrements) was possible. These cases highlight the importance of adopting a One Health approach to control the presence of zoonotic bacteria in wild animals and avoid spillovers into domestic animals and, potentially, humans.
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Affiliation(s)
- Guillaume Girault
- EU/WOAH & National Reference Laboratory for Brucellosis, Animal Health Laboratory, Anses/Paris-Est University, 94700 Maisons-Alfort, France
| | - Vitomir Djokic
- EU/WOAH & National Reference Laboratory for Brucellosis, Animal Health Laboratory, Anses/Paris-Est University, 94700 Maisons-Alfort, France
| | - Fathia Petot-Bottin
- EU/WOAH & National Reference Laboratory for Brucellosis, Animal Health Laboratory, Anses/Paris-Est University, 94700 Maisons-Alfort, France
| | - Ludivine Perrot
- EU/WOAH & National Reference Laboratory for Brucellosis, Animal Health Laboratory, Anses/Paris-Est University, 94700 Maisons-Alfort, France
| | | | | | - Acacia Ferreira Vicente
- EU/WOAH & National Reference Laboratory for Brucellosis, Animal Health Laboratory, Anses/Paris-Est University, 94700 Maisons-Alfort, France
| | - Claire Ponsart
- EU/WOAH & National Reference Laboratory for Brucellosis, Animal Health Laboratory, Anses/Paris-Est University, 94700 Maisons-Alfort, France
| | - Luca Freddi
- EU/WOAH & National Reference Laboratory for Brucellosis, Animal Health Laboratory, Anses/Paris-Est University, 94700 Maisons-Alfort, France
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Rossi A, Santi A, Barsi F, Casadei G, Di Donato A, Fontana MC, Galletti G, Garbarino CA, Lombardini A, Musto C, Prosperi A, Pupillo G, Rugna G, Tamba M. Eleven Years of Health Monitoring in Wild Boars ( Sus scrofa) in the Emilia-Romagna Region (Italy). Animals (Basel) 2023; 13:1832. [PMID: 37889705 PMCID: PMC10252029 DOI: 10.3390/ani13111832] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 05/26/2023] [Accepted: 05/30/2023] [Indexed: 10/29/2023] Open
Abstract
In recent years, the growth of wild ungulates has increased the focus on their health monitoring. In particular, the health status of wild boars is relevant for the economic impact on the pig industry. The Emilia-Romagna region activated a wildlife monitoring plan to better evaluate the health status of the wild boar population. Between 2011 and 2021, samples of found dead and hunted wild boar have been examined for trichinellosis, tuberculosis, brucellosis, african swine fever, classical swine fever, Aujeszky's disease, swine vesicular disease, and swine influenza A. Trichinella britovi was identified in 0.001% of the examined wild boars; neither M. bovis nor M. tuberculosis were found in M. tuberculosis complex positive samples; 2.3% were positive for Brucella suis; 29.4% of the sera were positive for Aujeszky's disease virus; and 0.9% of the samples were positive for swine influenza A virus. With an uncertain population estimate, the number of animals tested, the number of positives, and the sampling method do not allow us to make many inferences but suggest the need to implement and strengthen the existing surveillance activity, as it seems to be the only viable alternative for safeguarding animal and human health.
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Affiliation(s)
- Arianna Rossi
- Istituto Zooprofilattico Sperimentale della Lombardia e dell’Emilia-Romagna “Bruno Ubertini”, 25124 Brescia, Italy (F.B.); (G.C.); (A.D.D.); (M.C.F.); (G.G.); (C.A.G.); (A.P.); (G.P.); (G.R.); (M.T.)
| | - Annalisa Santi
- Istituto Zooprofilattico Sperimentale della Lombardia e dell’Emilia-Romagna “Bruno Ubertini”, 25124 Brescia, Italy (F.B.); (G.C.); (A.D.D.); (M.C.F.); (G.G.); (C.A.G.); (A.P.); (G.P.); (G.R.); (M.T.)
| | - Filippo Barsi
- Istituto Zooprofilattico Sperimentale della Lombardia e dell’Emilia-Romagna “Bruno Ubertini”, 25124 Brescia, Italy (F.B.); (G.C.); (A.D.D.); (M.C.F.); (G.G.); (C.A.G.); (A.P.); (G.P.); (G.R.); (M.T.)
| | - Gabriele Casadei
- Istituto Zooprofilattico Sperimentale della Lombardia e dell’Emilia-Romagna “Bruno Ubertini”, 25124 Brescia, Italy (F.B.); (G.C.); (A.D.D.); (M.C.F.); (G.G.); (C.A.G.); (A.P.); (G.P.); (G.R.); (M.T.)
| | - Alessandra Di Donato
- Istituto Zooprofilattico Sperimentale della Lombardia e dell’Emilia-Romagna “Bruno Ubertini”, 25124 Brescia, Italy (F.B.); (G.C.); (A.D.D.); (M.C.F.); (G.G.); (C.A.G.); (A.P.); (G.P.); (G.R.); (M.T.)
| | - Maria Cristina Fontana
- Istituto Zooprofilattico Sperimentale della Lombardia e dell’Emilia-Romagna “Bruno Ubertini”, 25124 Brescia, Italy (F.B.); (G.C.); (A.D.D.); (M.C.F.); (G.G.); (C.A.G.); (A.P.); (G.P.); (G.R.); (M.T.)
| | - Giorgio Galletti
- Istituto Zooprofilattico Sperimentale della Lombardia e dell’Emilia-Romagna “Bruno Ubertini”, 25124 Brescia, Italy (F.B.); (G.C.); (A.D.D.); (M.C.F.); (G.G.); (C.A.G.); (A.P.); (G.P.); (G.R.); (M.T.)
| | - Chiara Anna Garbarino
- Istituto Zooprofilattico Sperimentale della Lombardia e dell’Emilia-Romagna “Bruno Ubertini”, 25124 Brescia, Italy (F.B.); (G.C.); (A.D.D.); (M.C.F.); (G.G.); (C.A.G.); (A.P.); (G.P.); (G.R.); (M.T.)
| | - Annalisa Lombardini
- Settore Prevenzione Collettiva e Sanità Pubblica, Direzione Generale Cura della Persona, Salute e Welfare, Emilia-Romagna Region, 40127 Bologna, Italy;
| | - Carmela Musto
- Department of Veterinary Medical Sciences, University of Bologna, 40064 Bologna, Italy;
| | - Alice Prosperi
- Istituto Zooprofilattico Sperimentale della Lombardia e dell’Emilia-Romagna “Bruno Ubertini”, 25124 Brescia, Italy (F.B.); (G.C.); (A.D.D.); (M.C.F.); (G.G.); (C.A.G.); (A.P.); (G.P.); (G.R.); (M.T.)
| | - Giovanni Pupillo
- Istituto Zooprofilattico Sperimentale della Lombardia e dell’Emilia-Romagna “Bruno Ubertini”, 25124 Brescia, Italy (F.B.); (G.C.); (A.D.D.); (M.C.F.); (G.G.); (C.A.G.); (A.P.); (G.P.); (G.R.); (M.T.)
| | - Gianluca Rugna
- Istituto Zooprofilattico Sperimentale della Lombardia e dell’Emilia-Romagna “Bruno Ubertini”, 25124 Brescia, Italy (F.B.); (G.C.); (A.D.D.); (M.C.F.); (G.G.); (C.A.G.); (A.P.); (G.P.); (G.R.); (M.T.)
| | - Marco Tamba
- Istituto Zooprofilattico Sperimentale della Lombardia e dell’Emilia-Romagna “Bruno Ubertini”, 25124 Brescia, Italy (F.B.); (G.C.); (A.D.D.); (M.C.F.); (G.G.); (C.A.G.); (A.P.); (G.P.); (G.R.); (M.T.)
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Makovska I, Dhaka P, Chantziaras I, Pessoa J, Dewulf J. The Role of Wildlife and Pests in the Transmission of Pathogenic Agents to Domestic Pigs: A Systematic Review. Animals (Basel) 2023; 13:1830. [PMID: 37889698 PMCID: PMC10251848 DOI: 10.3390/ani13111830] [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: 04/19/2023] [Revised: 05/26/2023] [Accepted: 05/27/2023] [Indexed: 10/29/2023] Open
Abstract
Wild animals and pests are important reservoirs and vectors of pathogenic agents that can affect domestic pigs. Rapid globalization, anthropogenic factors, and increasing trends toward outdoor pig production facilitate the contact between domestic pigs and wildlife. However, knowledge on the transmission pathways between domestic pigs and the aforementioned target groups is limited. The present systematic review aims to collect and analyze information on the roles of different wild animal species and pests in the spread of pathogens to domesticated pigs. Overall, 1250 peer-reviewed manuscripts published in English between 2010 and 2022 were screened through the PRISMA framework using PubMed, Scopus, and Web of Science databases. A total of 84 studies reporting possible transmission routes of different pathogenic agents were included. A majority of the studies (80%) focused on the role of wild boars in the transmission of pathogenic agents to pig farms. Studies involving the role of rodents (7%), and deer (6%) were the next most frequent, whereas the role of insects (5%), wild carnivores (5%), wild birds (4%), cats (2%), and badgers (1%) were less available. Only 3.5% of studies presented evidence-based transmission routes from wildlife to domestic pigs. Approximately 65.5% of the included studies described possible risks/risk factors for pathogens' transmission based on quantitative data, whereas 31% of the articles only presented a hypothesis or qualitative analysis of possible transmission routes or risk factors and/or contact rates. Risk factors identified include outdoor farms or extensive systems and farms with a low level of biosecurity as well as wildlife behavior; environmental conditions; human activities and movements; fomites, feed (swill feeding), water, carcasses, and bedding materials. We recommend the strengthening of farm biosecurity frameworks with special attention to wildlife-associated parameters, especially in extensive rearing systems and high-risk zones as it was repeatedly found to be an important measure to prevent pathogen transmission to domestic pigs. In addition, there is a need to focus on effective risk-based wildlife surveillance mechanisms and to raise awareness among farmers about existing wildlife-associated risk factors for disease transmission.
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Affiliation(s)
- Iryna Makovska
- Veterinary Epidemiology Unit, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium; (P.D.); (I.C.); (J.P.); (J.D.)
| | - Pankaj Dhaka
- Veterinary Epidemiology Unit, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium; (P.D.); (I.C.); (J.P.); (J.D.)
- Centre for One Health, College of Veterinary Science, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana 141004, India
| | - Ilias Chantziaras
- Veterinary Epidemiology Unit, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium; (P.D.); (I.C.); (J.P.); (J.D.)
| | - Joana Pessoa
- Veterinary Epidemiology Unit, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium; (P.D.); (I.C.); (J.P.); (J.D.)
| | - Jeroen Dewulf
- Veterinary Epidemiology Unit, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium; (P.D.); (I.C.); (J.P.); (J.D.)
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Papić B, Kušar D, Krt B, Ocepek M, Avberšek J. Phylogeography of Brucella suis biovar 2 with focus on Slovenian wildlife. Vet Microbiol 2023; 282:109751. [PMID: 37104938 DOI: 10.1016/j.vetmic.2023.109751] [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: 12/19/2022] [Revised: 04/19/2023] [Accepted: 04/22/2023] [Indexed: 04/29/2023]
Abstract
Brucella suis commonly infects swine but occasionally also other animal species and humans. Wild boars are the most important reservoir of B. suis biovar 2, continually infecting susceptible hosts through close contact. Nevertheless, the genetic diversity of B. suis in wildlife remains understudied. Here, we typed 17 Slovenian B. suis biovar 2 isolates obtained in 2017-2019 from wild boars (n = 16) and a hare (n = 1) using whole-genome sequencing (WGS). To assess the global phylogenetic diversity of B. suis, we compared them to 126 publicly available B. suis genomes. All Slovenian isolates fell within the biovar 2 lineage, confirming the previous multiplex PCR typing results. According to MLST-21, the wild boar isolates were of sequence types (STs) ST16 (n = 8) and ST153 (n = 8); the maximum genetic distance between isolates of the same ST was 28 wgMLST alleles. The ST153 isolates were restricted to the Slovenian-Croatian border and clustered together with the Croatian ST153 isolates from swine, indicating cross-border transmission of B. suis ST153 strain. The hare isolate was of ST40 and was genetically distant (≥ 489 alleles) from the wild boar isolates. The genome-wide phylogeny clearly separated different B. suis biovars. The present study is the first report on the population structure of B. suis in wildlife in Slovenia and shows that the Slovenian B. suis population is genetically heterogeneous. At the species level, B. suis biovars are clearly separated in the WGS-based phylogenetic tree and can therefore be reliably predicted using WGS.
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Affiliation(s)
- Bojan Papić
- University of Ljubljana, Veterinary Faculty, Institute of Microbiology and Parasitology, Gerbičeva 60, 1000 Ljubljana, Slovenia.
| | - Darja Kušar
- University of Ljubljana, Veterinary Faculty, Institute of Microbiology and Parasitology, Gerbičeva 60, 1000 Ljubljana, Slovenia
| | - Brane Krt
- University of Ljubljana, Veterinary Faculty, Institute of Microbiology and Parasitology, Gerbičeva 60, 1000 Ljubljana, Slovenia
| | - Matjaž Ocepek
- University of Ljubljana, Veterinary Faculty, Institute of Microbiology and Parasitology, Gerbičeva 60, 1000 Ljubljana, Slovenia
| | - Jana Avberšek
- University of Ljubljana, Veterinary Faculty, Institute of Microbiology and Parasitology, Gerbičeva 60, 1000 Ljubljana, Slovenia
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Macías Luaces L, Boll K, Klose C, Domogalla-Urbansky J, Müller M, Eisenberger D, Riehm JM. Seroprevalence of Brucella Infection in Wild Boars ( Sus scrofa) of Bavaria, Germany, 2019 to 2021 and Associated Genome Analysis of Five B. suis Biovar 2 Isolates. Microorganisms 2023; 11:microorganisms11020478. [PMID: 36838443 PMCID: PMC9959221 DOI: 10.3390/microorganisms11020478] [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: 12/23/2022] [Revised: 02/08/2023] [Accepted: 02/08/2023] [Indexed: 02/17/2023] Open
Abstract
Brucella species are highly pathogenic zoonotic agents and are found in vertebrates all over the world. To date, Germany is officially declared free from brucellosis and continuous surveillance is currently limited to farm ruminants. However, porcine brucellosis, mostly caused by B. suis biovar 2, is still found in wild boars and hares. In the present study, a three-year monitoring program was conducted focusing on the wild boar population in the state of Bavaria. Serologic screening of 11,956 animals and a direct pathogen detection approach, including a subset of 681 tissue samples, was carried out. The serologic incidence was 17.9%, which is in approximate accordance with previously published results from various European countries. Applying comparative whole genome analysis, five isolated B. suis biovar 2 strains from Bavaria could be assigned to three known European genetic lineages. One isolate was closely related to another strain recovered in Germany in 2006. Concluding, porcine brucellosis is endemic in Bavaria and the wild boar population represents a reservoir for genetically distinct B. suis biovar 2 strains. However, the transmission risk of swine brucellosis to humans and farm animals is still regarded as minor due to low zoonotic potential, awareness, and biosafety measures.
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Affiliation(s)
- Laura Macías Luaces
- Bavarian Health and Food Safety Authority (LGL), Department of Animal Health, 85764 Oberschleißheim, Germany
| | - Kerstin Boll
- Bavarian Health and Food Safety Authority (LGL), Department of Animal Health, 91058 Erlangen, Germany
| | - Corinna Klose
- Bavarian Health and Food Safety Authority (LGL), Department of Animal Health, 91058 Erlangen, Germany
| | - Janina Domogalla-Urbansky
- Bavarian Health and Food Safety Authority (LGL), Department of Animal Health, 85764 Oberschleißheim, Germany
| | - Matthias Müller
- Bavarian Health and Food Safety Authority (LGL), Department of Animal Health, 91058 Erlangen, Germany
| | - David Eisenberger
- Bavarian Health and Food Safety Authority (LGL), Department of Animal Health, 91058 Erlangen, Germany
| | - Julia M. Riehm
- Bavarian Health and Food Safety Authority (LGL), Department of Animal Health, 85764 Oberschleißheim, Germany
- Bavarian Health and Food Safety Authority (LGL), Department of Animal Health, 91058 Erlangen, Germany
- Correspondence: ; Tel.: +49-9131-6808-5178
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9
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Lin CN, Okabayashi T, Tummaruk P, Ooi PT. Editorial: Zoonotic diseases among pigs. Front Vet Sci 2023; 9:1122679. [PMID: 36686156 PMCID: PMC9851072 DOI: 10.3389/fvets.2022.1122679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Accepted: 12/20/2022] [Indexed: 01/07/2023] Open
Affiliation(s)
- Chao-Nan Lin
- Department of Veterinary Medicine, College of Veterinary Medicine, National Pingtung University of Science and Technology, Pingtung, Taiwan,*Correspondence: Chao-Nan Lin ✉
| | - Tamaki Okabayashi
- Center for Animal Disease Control, University of Miyazaki, Miyazaki, Japan,Tamaki Okabayashi ✉
| | - Padet Tummaruk
- Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand,Padet Tummaruk ✉
| | - Peck Toung Ooi
- Faculty of Veterinary Medicine, University Putra Malaysia, Serdang, Malaysia,Peck Toung Ooi ✉
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Kydyshov K, Usenbaev N, Berdiev S, Dzhaparova A, Abidova A, Kebekbaeva N, Abdyraev M, Wareth G, Brangsch H, Melzer F, Neubauer H, Pletz MW. First record of the human infection of Brucella melitensis in Kyrgyzstan: evidence from whole-genome sequencing-based analysis. Infect Dis Poverty 2022; 11:120. [PMID: 36482466 PMCID: PMC9730661 DOI: 10.1186/s40249-022-01044-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 11/10/2022] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Brucellosis, a zoonosis mainly transmitted by consumption of unpasteurized dairy products as well as direct contact with infected animals, is endemic in Kyrgyzstan. However, Brucella species in humans have not been investigated and the origin of the disease remains poorly known in wide parts of Сentral Asia. Thus, molecular characterization of the circulating strains is a critical first step in understanding Brucella diversity in the country. METHODS In this study, isolates were collected from patients with suspected brucellosis from different regions in Kyrgyzstan between 2019 and 2020. The detection and identification of Brucella was carried out by Bruce-ladder PCR. Next generation sequencing was used to sequence the 89 Brucella isolates, which were genotyped by cgSNP and cgMLST to identify epidemiological connection between Brucella isolates as well as placing them in the context of the global Brucella phylogeny. RESULTS The Brucella strains isolated from all regions of Kyrgyzstan were identified as B. melitensis. Based on cgSNP analysis, 18 sequence types were differentiated. The highest numbers of different sequence types were found in Batken (n = 8), Osh (n = 8) and Jalal-Abad (n = 6) oblasts. According to cgSNP and cgMLST analyses, different B. melitensis lineages circulate in Kyrgyzstan, all of them belonging to the Eastern Mediterranean group of the global Brucella phylogeny with the highest similarity to strains from Turkmenistan, Iran and Turkey. CONCLUSION In the present study, B. melitensis was identified as a causative agent of human brucellosis in Kyrgyzstan and different lineages could be identified. Since this study focused on isolates of human origin, the identity of Brucella species and lineages circulating among animal populations remains elusive. Implementing culture techniques and use of most recent molecular, bioinformatic and epidemiological tools are needed to set up a One Health approach to combat brucellosis in Kyrgyzstan. Further, other Сentral Asian countries need to take part in this effort as brucellosis is a transboundary disease in these regions.
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Affiliation(s)
- Kalysbek Kydyshov
- Institute of Bacterial Infections and Zoonoses, Friedrich-Loeffler Institute, Naumburger Str. 96a, 07743 Jena, Germany
| | - Nurbolot Usenbaev
- Republican Center for Quarantine and Highly Dangerous Infections of Ministry of Health, Bishkek, Kyrgyzstan
| | - Stalbek Berdiev
- Republican Center for Quarantine and Highly Dangerous Infections of Ministry of Health, Bishkek, Kyrgyzstan
| | - Aigul Dzhaparova
- Republican Center for Quarantine and Highly Dangerous Infections of Ministry of Health, Bishkek, Kyrgyzstan
| | - Aziza Abidova
- Republican Center for Quarantine and Highly Dangerous Infections of Ministry of Health, Bishkek, Kyrgyzstan
| | - Nuraiym Kebekbaeva
- Republican Center for Quarantine and Highly Dangerous Infections of Ministry of Health, Bishkek, Kyrgyzstan
| | - Murat Abdyraev
- Kyrgyz Scientific Research Institute of Veterinary Medicine, Bishkek, Kyrgyzstan
| | - Gamal Wareth
- Institute of Bacterial Infections and Zoonoses, Friedrich-Loeffler Institute, Naumburger Str. 96a, 07743 Jena, Germany
| | - Hanka Brangsch
- Institute of Bacterial Infections and Zoonoses, Friedrich-Loeffler Institute, Naumburger Str. 96a, 07743 Jena, Germany
| | - Falk Melzer
- Institute of Bacterial Infections and Zoonoses, Friedrich-Loeffler Institute, Naumburger Str. 96a, 07743 Jena, Germany
| | - Heinrich Neubauer
- Institute of Bacterial Infections and Zoonoses, Friedrich-Loeffler Institute, Naumburger Str. 96a, 07743 Jena, Germany
| | - Mathias W. Pletz
- grid.275559.90000 0000 8517 6224Institute of Infectious Diseases and Infection Control, Jena University Hospital, Am Klinikum 1, Jena, Germany
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11
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Touloudi A, McGiven J, Cawthraw S, Valiakos G, Kostoulas P, Duncombe L, Gortázar C, Boadella M, Sofia M, Athanasakopoulou Z, Chatzopoulos DC, Spyrou V, Petrovska L, Billinis C. Development of a Multiplex Bead Assay to Detect Serological Responses to Brucella Species in Domestic Pigs and Wild Boar with the Potential to Overcome Cross-Reactivity with Yersinia enterocolitica O:9. Microorganisms 2022; 10:microorganisms10071362. [PMID: 35889081 PMCID: PMC9324436 DOI: 10.3390/microorganisms10071362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 07/01/2022] [Accepted: 07/04/2022] [Indexed: 11/16/2022] Open
Abstract
The aim of this study was to develop a multiplex bead assay using a Brucella rLPS antigen, a Brucella suis smooth antigen, and a Yersinia enterocolitica O:9 antigen that not only discriminates Brucella-infected from Brucella-uninfected pigs and wild boar, but also overcomes the cross reactivity with Y. enterocolitica O:9. Sera from 126 domestic pigs were tested: 29 pigs were Brucella infected, 80 were non-infected and 17 were confirmed to be false positive serological reactors (FPSR). Sera from 49 wild boar were tested: 18 were positive and 31 were negative. Using the rLPS antigen, 26/29 Brucella-infected domestic pigs and 15/18 seropositive wild boar were positive, while 75/80 non-Brucella infected domestic pigs, all FPSR, and all seronegative wild boar were negative. Using the smooth B. suis 1330 antigen, all Brucella-infected domestic pigs, 9/17 FPSR and all seropositive wild boar were positive, while all non-infected pigs and 30/31 seronegative wild boar were negative. The ratio of the readouts from the smooth B. suis antigen and Y. enterocolitica O:9 antigen enabled discriminating all Brucella infected individuals from the FPSR domestic pigs. These results demonstrate the potential of this assay for use in the surveillance of brucellosis, overcoming the cross-reactivity with Y. enterocolitica.
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Affiliation(s)
- Antonia Touloudi
- Faculty of Veterinary Science, University of Thessaly, 431 00 Karditsa, Greece; (A.T.); (G.V.); (M.S.); (Z.A.)
| | - John McGiven
- Department of Bacteriology, Animal and Plant Health Agency, OIE/FAO Brucellosis Reference Laboratory, Woodham Lane, Addlestone, Surrey KT15 3NB, UK; (J.M.); (S.C.); (L.D.)
| | - Shaun Cawthraw
- Department of Bacteriology, Animal and Plant Health Agency, OIE/FAO Brucellosis Reference Laboratory, Woodham Lane, Addlestone, Surrey KT15 3NB, UK; (J.M.); (S.C.); (L.D.)
| | - George Valiakos
- Faculty of Veterinary Science, University of Thessaly, 431 00 Karditsa, Greece; (A.T.); (G.V.); (M.S.); (Z.A.)
| | - Polychronis Kostoulas
- Faculty of Public and One Health, University of Thessaly, 431 00 Karditsa, Greece; (P.K.); (D.C.C.)
| | - Lucy Duncombe
- Department of Bacteriology, Animal and Plant Health Agency, OIE/FAO Brucellosis Reference Laboratory, Woodham Lane, Addlestone, Surrey KT15 3NB, UK; (J.M.); (S.C.); (L.D.)
| | - Christian Gortázar
- SaBio, Instituto de Investigación en Recursos Cinegéticos IREC, 13005 Ciudad Real, Spain;
| | | | - Marina Sofia
- Faculty of Veterinary Science, University of Thessaly, 431 00 Karditsa, Greece; (A.T.); (G.V.); (M.S.); (Z.A.)
| | - Zoi Athanasakopoulou
- Faculty of Veterinary Science, University of Thessaly, 431 00 Karditsa, Greece; (A.T.); (G.V.); (M.S.); (Z.A.)
| | - Dimitris C. Chatzopoulos
- Faculty of Public and One Health, University of Thessaly, 431 00 Karditsa, Greece; (P.K.); (D.C.C.)
| | - Vassiliki Spyrou
- Faculty of Animal Science, University of Thessaly, 412 22 Larissa, Greece;
| | - Liljana Petrovska
- Department of Bacteriology, Animal and Plant Health Agency, OIE/FAO Brucellosis Reference Laboratory, Woodham Lane, Addlestone, Surrey KT15 3NB, UK; (J.M.); (S.C.); (L.D.)
- Correspondence: (L.P.); (C.B.)
| | - Charalambos Billinis
- Faculty of Veterinary Science, University of Thessaly, 431 00 Karditsa, Greece; (A.T.); (G.V.); (M.S.); (Z.A.)
- Faculty of Public and One Health, University of Thessaly, 431 00 Karditsa, Greece; (P.K.); (D.C.C.)
- Correspondence: (L.P.); (C.B.)
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12
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Rebollada-Merino A, Pérez-Sancho M, Rodríguez-Bertos A, García N, Martínez I, Navarro A, Domínguez L, García-Seco T. Environment and Offspring Surveillance in Porcine Brucellosis. Front Vet Sci 2022; 9:915692. [PMID: 35799841 PMCID: PMC9253667 DOI: 10.3389/fvets.2022.915692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Accepted: 05/11/2022] [Indexed: 11/13/2022] Open
Abstract
Porcine brucellosis, caused by Brucella suis (B. suis), is a notifiable disease causing significant economic losses in production systems. Most infected pigs may act as carriers and shed B. suis even if asymptomatic. This can contribute to environmental persistence, thus hindering control efforts. Here, the environment and the offspring were investigated during and after a B. suis outbreak at a sow breeding farm. The diagnosis of B. suis in sows (n = 1,140) was performed by culture and polymerase chain reaction (PCR) from vaginal swabs, indirect enzyme-linked immunosorbent assay (I-ELISA) from sera, and brucellin skin test (BST). B. suis diagnosis in post-weaning pigs (n = 899) was performed by I-ELISA in sera and BST. The environmental surveillance programme was implemented by placing gauze sponges (n = 175) pre-hydrated in a surfactant and inactivating liquid for Brucella DNA detection by PCR in different farm areas. Our results showed that the offspring of infected sows reacted to in vivo techniques for B. suis. Furthermore, the offspring born during the outbreak displayed higher seropositivity (I-ELISA) and reactivity (BST) than those pigs born after. Brucella DNA was detected in pregnant sow areas, boxes, boots, and post-weaning pig areas. In addition, Brucella DNA environmental detection was higher during the B. suis outbreak than the post B. suis outbreak. The environmental approach has proven to be a simple, practical, valuable, and safe method to detect and monitor B. suis. These results suggest a role of the environment and the offspring that should be considered in porcine brucellosis surveillance and control programmes.
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Affiliation(s)
- Agustín Rebollada-Merino
- VISAVET Health Surveillance Centre, Complutense University of Madrid, Madrid, Spain
- Department of Internal Medicine and Animal Surgery, Faculty of Veterinary Medicine, Complutense University of Madrid, Madrid, Spain
| | - Marta Pérez-Sancho
- VISAVET Health Surveillance Centre, Complutense University of Madrid, Madrid, Spain
- Department of Animal Health, Faculty of Veterinary Medicine, Complutense University of Madrid, Madrid, Spain
- *Correspondence: Marta Pérez-Sancho
| | - Antonio Rodríguez-Bertos
- VISAVET Health Surveillance Centre, Complutense University of Madrid, Madrid, Spain
- Department of Internal Medicine and Animal Surgery, Faculty of Veterinary Medicine, Complutense University of Madrid, Madrid, Spain
| | - Nerea García
- VISAVET Health Surveillance Centre, Complutense University of Madrid, Madrid, Spain
- Department of Animal Health, Faculty of Veterinary Medicine, Complutense University of Madrid, Madrid, Spain
| | - Irene Martínez
- VISAVET Health Surveillance Centre, Complutense University of Madrid, Madrid, Spain
| | - Alejandro Navarro
- VISAVET Health Surveillance Centre, Complutense University of Madrid, Madrid, Spain
| | - Lucas Domínguez
- VISAVET Health Surveillance Centre, Complutense University of Madrid, Madrid, Spain
- Department of Animal Health, Faculty of Veterinary Medicine, Complutense University of Madrid, Madrid, Spain
| | - Teresa García-Seco
- VISAVET Health Surveillance Centre, Complutense University of Madrid, Madrid, Spain
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13
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Elmonir W, Abdel-Hamid NH, Hamdy MER, Beleta EIM, El-Diasty M, Melzer F, Wareth G, Neubauer H. Isolation and molecular confirmation of Brucella suis biovar 2 from slaughtered pigs: an unanticipated biovar from domestic pigs in Egypt. BMC Vet Res 2022; 18:224. [PMID: 35698071 PMCID: PMC9195200 DOI: 10.1186/s12917-022-03332-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Accepted: 05/11/2022] [Indexed: 11/10/2022] Open
Abstract
Background Brucella suis is a zoonotic pathogen with a serious impact on public health and the pig industry worldwide. Information regarding B. suis in pigs in Egypt is scarce. This study aimed to investigate the prevalence of B. suis in slaughtered domestic pigs at El-Basatin abattoir in Cairo, Egypt. A total of 1,116 domestic pigs slaughtered in 2020 were sampled for Brucella isolation and identification. Identified Brucella isolates were molecularly confirmed at species, and biovar levels using Bruce ladder PCR and Suis ladder multiplex PCR. Additionally, high-risk practices of 16 abattoir workers (4 veterinarians, 10 butchering and evisceration workers, and 2 scalding workers) were investigated using a pre-piloted structured questionnaire. Results Brucella isolates were recovered from 1.3% of examined pigs (n = 14) at consistently low rates (1.1—2.9%) across the year of sampling from February to December 2020. All isolates were confirmed as B. suis biovar (bv) 2. Remarkably, 92.9% (13/14) of isolates showed atypical ability to produce H2S and hence were considered as B. suis bv2 atypical phenotype. The prevalence was higher in males (1.8%) than in females (0.9). However, this difference was not significant (Odds ratio = 1.9; CI 95% 0.7 – 5.7; P = 0.2). No detectable pathological lesions were associated with B. suis bv2 infection in examined pigs. All strains were isolated from cervical lymph nodes, highlighting a potential oral transmission. High-risk practices were recorded among swine abattoir workers in this study: 75% do not wear gloves or disinfect their knives daily, and 18.8% were willing to work with open wound injuries. Conclusions To the best of our knowledge, this is the first isolation of B. suis bv2 in Egypt. Detection of H2S producing B. suis bv2 atypical phenotype is alarming as it may result in misinterpretation of these isolates as highly human pathogenic B. suis bv1 in Egypt and possibly elsewhere. Further epidemiological tracing studies are crucial for the detection of the origin of this biovar. Including pigs in the national surveillance program of brucellosis, and an education program for swine abattoir workers about occupational risk of B. suis is a need in Egypt. Supplementary Information The online version contains supplementary material available at 10.1186/s12917-022-03332-2.
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Affiliation(s)
- Walid Elmonir
- Department of Hygiene and Preventive Medicine (Zoonoses), Faculty of Veterinary Medicine, Kafrelsheikh University, Kafrelsheikh, Egypt
| | - Nour H Abdel-Hamid
- Agricultural Research Center, Animal Health Research Institute, P.O. Box 264-Giza, Cairo, 12618, Egypt
| | - Mahmoud E R Hamdy
- Agricultural Research Center, Animal Health Research Institute, P.O. Box 264-Giza, Cairo, 12618, Egypt
| | - Eman I M Beleta
- Agricultural Research Center, Animal Health Research Institute, P.O. Box 264-Giza, Cairo, 12618, Egypt
| | - Mohamed El-Diasty
- Agricultural Research Center, Animal Health Research Institute, P.O. Box 264-Giza, Cairo, 12618, Egypt
| | - Falk Melzer
- Institute of Bacterial Infections and Zoonosis, Friedrich-Loeffler Institut, Naumburger Str. 96a, 07743, Jena, Germany
| | - Gamal Wareth
- Institute of Bacterial Infections and Zoonosis, Friedrich-Loeffler Institut, Naumburger Str. 96a, 07743, Jena, Germany. .,Department of Bacteriology, Immunology, and Mycology, Faculty of Veterinary Medicine, Benha University, PO Box 13736, Toukh, Moshtohor, Egypt.
| | - Heinrich Neubauer
- Institute of Bacterial Infections and Zoonosis, Friedrich-Loeffler Institut, Naumburger Str. 96a, 07743, Jena, Germany
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14
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Evaluation of the Genetic Profiles of Brucella melitensis Strain from Turkey using Multilocus Variable Number Tandem Repeat Analysis (MLVA) and Multilocus Sequence Typing (MLST) Techniques. Vet Microbiol 2022; 269:109423. [DOI: 10.1016/j.vetmic.2022.109423] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 02/10/2022] [Accepted: 04/01/2022] [Indexed: 11/24/2022]
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15
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Whatmore AM, Foster JT. Emerging diversity and ongoing expansion of the genus Brucella. INFECTION GENETICS AND EVOLUTION 2021; 92:104865. [PMID: 33872784 DOI: 10.1016/j.meegid.2021.104865] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 04/12/2021] [Accepted: 04/14/2021] [Indexed: 12/15/2022]
Abstract
Remarkable genetic diversity and breadth of host species has been uncovered in the Brucella genus over the past decade, fundamentally changing our concept of what it means to be a Brucella. From ocean fishes and marine mammals, to pond dwelling amphibians, forest foxes, desert rodents, and cave-dwelling bats, Brucella have revealed a variety of previously unknown niches. Classical microbiological techniques have been able to help us classify many of these new strains but at times have limited our ability to see the true relationships among or within species. The closest relatives of Brucella are soil bacteria and the adaptations of Brucella spp. to live intracellularly suggest that the genus has evolved to live in vertebrate hosts. Several recently discovered species appear to have phenotypes that are intermediate between soil bacteria and core Brucella, suggesting that they may represent ancestral traits that were subsequently lost in the traditional species. Remarkably, the broad relationships among Brucella species using a variety of sequence and fragment-based approaches have been upheld when using comparative genomics with whole genomes. Nonetheless, genomes are required for fine-scale resolution of many of the relationships and for understanding the evolutionary history of the genus. We expect that the coming decades will reveal many more hosts and previously unknown diversity in a wide range of environments.
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Affiliation(s)
- Adrian M Whatmore
- OIE and FAO Brucellosis Reference Laboratory, Department of Bacteriology, Animal and Plant Health Agency (APHA), Woodham Lane, Addlestone, Surrey, United Kingdom.
| | - Jeffrey T Foster
- Pathogen and Microbiome Institute, Northern Arizona University, Flagstaff, AZ, USA
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16
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Jiao H, Luo Y, Zhou Z, Gu G, Li B, Li W, Liu Y, Wang Y, Wang X, Zhao Y, Wu L, Chen J, Shuai X, Huang Q. Integrative Bioinformatics Indentification of the Autophagic Pathway-Associated miRNA-mRNA Networks in RAW264.7 Macrophage Cells Infected with ∆Omp25 Brucella melitensis. Inflammation 2021; 43:532-539. [PMID: 31807961 DOI: 10.1007/s10753-019-01135-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Brucellosis is a zoonotic infectious disease caused by Brucella infection. Outer membrane protein 25 (Omp25) is closely related to the virulence and immunogenicity of Brucella. However, the molecular mechanism of Omp25 affecting Brucella-mediated macrophage autophagy remains unclear. Our previous study reported that four miRNAs (the upregulation of mmu-miR-146a-5p and mmu-miR-155-5p and downregulation of mmu-miR-149-3p and mmu-miR-5126) were confirmed and revealed the differentially expressed genes (DEGs) profile in RAW264.7 macrophage cells infected with Brucella melitensis Omp25 deletion mutant (∆Omp25 B. melitensis). Here, we predicted the target genes of the four miRNAs by TargetScan, miRanda, and PicTar. GO and KEGG were used for functional enrichment analysis of DEGs profile to reveal the autophagic pathway-associated genes. The overlapped genes, which drawn the autophagic pathway-associated miRNA-mRNA networks by cytoscape software, were identified by intersecting with the predicted target genes and autophagic pathway-associated DEGs. qRT-PCR was performed to validate the mRNAs of networks. The results showed that the autophagic pathway-associated networks of mmu-miR-149-3p-Ptpn5, mmu-miR-149-3p-Ppp2r3c, and mmu-miR-146a-5p-Dusp16 were identified in RAW264.7 macrophage cells infected with ∆Omp25 B. melitensis. Our findings are of great significance in elucidating the function of Omp25, revealing the infection mechanism of Brucella and prophylaxising and treating brucellosis.
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Affiliation(s)
- Hanwei Jiao
- Veterinary Scientific Engineering Research Center, College of Animal Science, Southwest University, Chongqing, 402460, People's Republic of China.
| | - Yichen Luo
- Veterinary Scientific Engineering Research Center, College of Animal Science, Southwest University, Chongqing, 402460, People's Republic of China
| | - Zhixiong Zhou
- Veterinary Scientific Engineering Research Center, College of Animal Science, Southwest University, Chongqing, 402460, People's Republic of China
| | - Guojing Gu
- Veterinary Scientific Engineering Research Center, College of Animal Science, Southwest University, Chongqing, 402460, People's Republic of China
| | - Bowen Li
- Veterinary Scientific Engineering Research Center, College of Animal Science, Southwest University, Chongqing, 402460, People's Republic of China
| | - Wenjie Li
- Veterinary Scientific Engineering Research Center, College of Animal Science, Southwest University, Chongqing, 402460, People's Republic of China
| | - Yuxuan Liu
- Veterinary Scientific Engineering Research Center, College of Animal Science, Southwest University, Chongqing, 402460, People's Republic of China
| | - Yidan Wang
- Veterinary Scientific Engineering Research Center, College of Animal Science, Southwest University, Chongqing, 402460, People's Republic of China
| | - Xinglong Wang
- Veterinary Scientific Engineering Research Center, College of Animal Science, Southwest University, Chongqing, 402460, People's Republic of China
| | - Yu Zhao
- Veterinary Scientific Engineering Research Center, College of Animal Science, Southwest University, Chongqing, 402460, People's Republic of China
| | - Li Wu
- Veterinary Scientific Engineering Research Center, College of Animal Science, Southwest University, Chongqing, 402460, People's Republic of China
| | - Jixuan Chen
- Veterinary Scientific Engineering Research Center, College of Animal Science, Southwest University, Chongqing, 402460, People's Republic of China
| | - Xuehong Shuai
- Veterinary Scientific Engineering Research Center, College of Animal Science, Southwest University, Chongqing, 402460, People's Republic of China
| | - Qingzhou Huang
- Veterinary Scientific Engineering Research Center, College of Animal Science, Southwest University, Chongqing, 402460, People's Republic of China
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17
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Fredriksson-Ahomaa M, London L, Skrzypczak T, Kantala T, Laamanen I, Biström M, Maunula L, Gadd T. Foodborne Zoonoses Common in Hunted Wild Boars. ECOHEALTH 2020; 17:512-522. [PMID: 33326058 PMCID: PMC8192372 DOI: 10.1007/s10393-020-01509-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 10/16/2020] [Accepted: 10/22/2020] [Indexed: 05/13/2023]
Abstract
The northern European wild boar population has increased during the last decade. Highest wild boar numbers in Finland have been reported in the southeastern part near the Russian border. Wild boars may be infected with several human and animal pathogens. In this study, we investigated the presence of important foodborne pathogens in wild boars hunted in 2016 in Finland using serology, PCR and culturing. Seroprevalence of Salmonella (38%) and Yersinia (56%) infections was high in wild boars. Antibodies to hepatitis E virus, Toxoplasma gondii and Brucella were found in 18%, 9% and 9% of the wild boars, respectively. Trichinella antibodies were detected in 1% of the animals. We recorded no differences in the seroprevalence between males and females. However, Yersinia and T. gondii antibodies were detected significantly more often in adults than in young individuals. Listeria monocytogenes (48%) and stx-positive Escherichia coli (33%) determinants were frequently detected in the visceral organs (spleen and kidneys) by PCR. Yersinia pseudotuberculosis O:1 and L. monocytogenes 2a and 4b were identified by culturing from the PCR-positive samples. Brucella suis biovar 2 was isolated from visceral organs. No African swine fever, classical swine fever or Aujeszky's disease were detected in the wild boars. Our study shows that wild boars are important reservoirs of foodborne pathogens.
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Affiliation(s)
- Maria Fredriksson-Ahomaa
- Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine, University of Helsinki, P.O.Box 66, 00014, Helsinki, Finland.
| | - Laura London
- Virology Unit, Finnish Food Authority, Helsinki, Finland
| | - Teresa Skrzypczak
- Veterinary Bacteriology and Pathology Unit, Finnish Food Authority, Helsinki, Finland
| | - Tuija Kantala
- Virology Unit, Finnish Food Authority, Helsinki, Finland
| | - Ilona Laamanen
- Virology Unit, Finnish Food Authority, Helsinki, Finland
| | - Mia Biström
- Veterinary Bacteriology and Pathology Unit, Finnish Food Authority, Helsinki, Finland
| | - Leena Maunula
- Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine, University of Helsinki, P.O.Box 66, 00014, Helsinki, Finland
| | - Tuija Gadd
- Virology Unit, Finnish Food Authority, Helsinki, Finland
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18
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Suárez-Esquivel M, Chaves-Olarte E, Moreno E, Guzmán-Verri C. Brucella Genomics: Macro and Micro Evolution. Int J Mol Sci 2020; 21:E7749. [PMID: 33092044 PMCID: PMC7589603 DOI: 10.3390/ijms21207749] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 10/08/2020] [Accepted: 10/11/2020] [Indexed: 01/25/2023] Open
Abstract
Brucella organisms are responsible for one of the most widespread bacterial zoonoses, named brucellosis. The disease affects several species of animals, including humans. One of the most intriguing aspects of the brucellae is that the various species show a ~97% similarity at the genome level. Still, the distinct Brucella species display different host preferences, zoonotic risk, and virulence. After 133 years of research, there are many aspects of the Brucella biology that remain poorly understood, such as host adaptation and virulence mechanisms. A strategy to understand these characteristics focuses on the relationship between the genomic diversity and host preference of the various Brucella species. Pseudogenization, genome reduction, single nucleotide polymorphism variation, number of tandem repeats, and mobile genetic elements are unveiled markers for host adaptation and virulence. Understanding the mechanisms of genome variability in the Brucella genus is relevant to comprehend the emergence of pathogens.
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Affiliation(s)
- Marcela Suárez-Esquivel
- Programa de Investigación en Enfermedades Tropicales, Escuela de Medicina Veterinaria, Universidad Nacional, Heredia 3000, Costa Rica; (M.S.-E.); (E.M.)
| | - Esteban Chaves-Olarte
- Centro de Investigación en Enfermedades Tropicales, Facultad de Microbiología, Universidad de Costa Rica, San José 1180, Costa Rica;
| | - Edgardo Moreno
- Programa de Investigación en Enfermedades Tropicales, Escuela de Medicina Veterinaria, Universidad Nacional, Heredia 3000, Costa Rica; (M.S.-E.); (E.M.)
| | - Caterina Guzmán-Verri
- Programa de Investigación en Enfermedades Tropicales, Escuela de Medicina Veterinaria, Universidad Nacional, Heredia 3000, Costa Rica; (M.S.-E.); (E.M.)
- Centro de Investigación en Enfermedades Tropicales, Facultad de Microbiología, Universidad de Costa Rica, San José 1180, Costa Rica;
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19
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Garofolo G, Petrella A, Lucifora G, Di Francesco G, Di Guardo G, Pautasso A, Iulini B, Varello K, Giorda F, Goria M, Dondo A, Zoppi S, Di Francesco CE, Giglio S, Ferringo F, Serrecchia L, Ferrantino MAR, Zilli K, Janowicz A, Tittarelli M, Mignone W, Casalone C, Grattarola C. Occurrence of Brucella ceti in striped dolphins from Italian Seas. PLoS One 2020; 15:e0240178. [PMID: 33007030 PMCID: PMC7531818 DOI: 10.1371/journal.pone.0240178] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Accepted: 09/21/2020] [Indexed: 01/15/2023] Open
Abstract
Brucella ceti infections have been increasingly reported in cetaceans, although a very limited characterization of Mediterranean Brucella spp. isolates has been previously reported and relatively few data exist about brucellosis among cetaceans in Italy. To address this gap, we studied 8 cases of B. ceti infection in striped dolphins (Stenella coeruleoalba) stranded along the Italian coastline from 2012 to 2018, investigated thanks to the Italian surveillance activity on stranded cetaceans. We focused on cases of stranding in eastern and western Italian seas, occurred along the Apulia (N = 6), Liguria (N = 1) and Calabria (N = 1) coastlines, through the analysis of gross and microscopic findings, the results of microbiological, biomolecular and serological investigations, as well as the detection of other relevant pathogens. The comparative genomic analysis used whole genome sequences of B. ceti from Italy paired with the publicly available complete genomes. Pathological changes consistent with B. ceti infection were detected in the central nervous system of 7 animals, showing non-suppurative meningoencephalitis. In 4 cases severe coinfections were detected, mostly involving Dolphin Morbillivirus (DMV). The severity of B. ceti-associated lesions supports the role of this microbial agent as a primary neurotropic pathogen for striped dolphins. We classified the 8 isolates into the common sequence type 26 (ST-26). Whole genome SNP analysis showed that the strains from Italy clustered into two genetically distinct clades. The first clade comprised exclusively the isolates from Ionian and Adriatic Seas, while the second one included the strain from the Ligurian Sea and those from the Catalonian coast. Plotting these clades onto the geographic map suggests a link between their phylogeny and topographical distribution. These results represent the first extensive characterization of B. ceti isolated from Italian waters reported to date and show the usefulness of WGS for understanding of the evolution of this emerging pathogen.
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Affiliation(s)
- Giuliano Garofolo
- National and OIE Reference Laboratory for Brucellosis, Istituto Zooprofilattico Sperimentale dell’Abruzzo e del Molise, Teramo, Italy
| | - Antonio Petrella
- Istituto Zooprofilattico Sperimentale della Puglia e della Basilicata, Foggia, Italy
| | - Giuseppe Lucifora
- Istituto Zooprofilattico Sperimentale del Mezzogiorno, Vibo Valentia, Italy
| | - Gabriella Di Francesco
- National and OIE Reference Laboratory for Brucellosis, Istituto Zooprofilattico Sperimentale dell’Abruzzo e del Molise, Teramo, Italy
| | | | | | - Barbara Iulini
- OIE Collaborating Centre Health of Marine Mammals, Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d’Aosta, Torino, Italy
| | - Katia Varello
- OIE Collaborating Centre Health of Marine Mammals, Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d’Aosta, Torino, Italy
| | - Federica Giorda
- OIE Collaborating Centre Health of Marine Mammals, Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d’Aosta, Torino, Italy
- Institute for Animal Health and Food Safety (IUSA), Faculty of Veterinary Medicine, University of Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Canary Islands, Spain
| | - Maria Goria
- OIE Collaborating Centre Health of Marine Mammals, Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d’Aosta, Torino, Italy
| | - Alessandro Dondo
- OIE Collaborating Centre Health of Marine Mammals, Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d’Aosta, Torino, Italy
| | - Simona Zoppi
- OIE Collaborating Centre Health of Marine Mammals, Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d’Aosta, Torino, Italy
| | | | - Stefania Giglio
- M.A.R.E. Calabria Association, Montepaone (Catanzaro), Italy
| | - Furio Ferringo
- Istituto Zooprofilattico Sperimentale della Puglia e della Basilicata, Foggia, Italy
| | - Luigina Serrecchia
- Istituto Zooprofilattico Sperimentale della Puglia e della Basilicata, Foggia, Italy
| | | | - Katiuscia Zilli
- National and OIE Reference Laboratory for Brucellosis, Istituto Zooprofilattico Sperimentale dell’Abruzzo e del Molise, Teramo, Italy
| | - Anna Janowicz
- National and OIE Reference Laboratory for Brucellosis, Istituto Zooprofilattico Sperimentale dell’Abruzzo e del Molise, Teramo, Italy
| | - Manuela Tittarelli
- National and OIE Reference Laboratory for Brucellosis, Istituto Zooprofilattico Sperimentale dell’Abruzzo e del Molise, Teramo, Italy
| | - Walter Mignone
- OIE Collaborating Centre Health of Marine Mammals, Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d’Aosta, Torino, Italy
| | - Cristina Casalone
- OIE Collaborating Centre Health of Marine Mammals, Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d’Aosta, Torino, Italy
| | - Carla Grattarola
- OIE Collaborating Centre Health of Marine Mammals, Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d’Aosta, Torino, Italy
- * E-mail:
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20
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Wu JY, Li JJ, Wang DF, Wei YR, Meng XX, Tuerxun G, Bolati H, Liu KK, Muhan M, Shahan A, Dilixiati D, Yang XY. Seroprevalence of Five Zoonotic Pathogens in Wild Ruminants in Xinjiang, Northwest China. Vector Borne Zoonotic Dis 2020; 20:882-887. [PMID: 32936059 DOI: 10.1089/vbz.2020.2630] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Wild ruminants are at risk for zoonotic pathogen infection as a result of interactions with domestic animals and humans. One way to assess the level of a wild ruminant disease in a population is to determine the seroprevalence of the pathogen of interest. The objective of this study was to determine the seroprevalence of five zoonotic pathogens in wild ruminants in Xinjiang, Northwest China. In 2009 and 2011-2015, 258 wild ruminant sera samples were collected from various species. Samples were obtained from 30 Siberian ibexes, 94 goitered gazelles, 6 Tibetan antelopes, 32 argali sheep, 16 roe deer, 20 blue sheep, 56 red deer, and 4 wild yaks, in 10 regions of Xinjiang. Samples were tested using antibodies against Brucella spp., Chlamydophila abortus, Coxiella burnetii, Toxoplasma gondii, and West Nile virus. Seropositivity was detected for all five pathogens, with detection rates of Brucella spp., C. abortus, C. burnetii, T. gondii, and West Nile virus of 2.3% (95% confidence interval [CI], 0.5-4.2%), 6.2% (95% CI, 3.3-9.1%), 7.8% (95% CI, 4.5-11.0%), 2.3% (95% CI, 0.5-4.2%), and 0.8% (95% CI, 0-1.8%), respectively. The level of pathogens differed for different species and different regions. The results indicate that seropositivity to zoonotic pathogens is common among wild ruminants in Xinjiang, Northwest China, with C. burnetii and C. abortus detected at the highest levels. This study provides a baseline for future assessment of spillover events.
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Affiliation(s)
- Jian-Yong Wu
- Institute of Veterinary Medicine, Xinjiang Academy of Animal Sciences, Urumqi, China
| | - Jian-Jun Li
- Institute of Veterinary Medicine, Xinjiang Academy of Animal Sciences, Urumqi, China
| | - Deng-Feng Wang
- Institute of Veterinary Medicine, Xinjiang Academy of Animal Sciences, Urumqi, China
| | - Yu-Rong Wei
- Institute of Veterinary Medicine, Xinjiang Academy of Animal Sciences, Urumqi, China
| | - Xiao-Xiao Meng
- Institute of Veterinary Medicine, Xinjiang Academy of Animal Sciences, Urumqi, China
| | - Gunuer Tuerxun
- Institute of Veterinary Medicine, Xinjiang Academy of Animal Sciences, Urumqi, China
| | - Hongduzi Bolati
- Institute of Veterinary Medicine, Xinjiang Academy of Animal Sciences, Urumqi, China
| | - Kang-Kang Liu
- School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Masha Muhan
- Wildlife Focus Disease Monitoring Station of Xinjiang, Urumqi, China
| | | | | | - Xue-Yun Yang
- Institute of Veterinary Medicine, Xinjiang Academy of Animal Sciences, Urumqi, China
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21
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Aragón-Aranda B, de Miguel MJ, Lázaro-Antón L, Salvador-Bescós M, Zúñiga-Ripa A, Moriyón I, Iriarte M, Muñoz PM, Conde-Álvarez R. Development of attenuated live vaccine candidates against swine brucellosis in a non-zoonotic B. suis biovar 2 background. Vet Res 2020; 51:92. [PMID: 32703299 PMCID: PMC7376850 DOI: 10.1186/s13567-020-00815-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Accepted: 06/05/2020] [Indexed: 02/07/2023] Open
Abstract
Brucella is a genus of gram-negative bacteria that cause brucellosis. B. abortus and B. melitensis infect domestic ruminants while B. suis (biovars 1-3) infect swine, and all these bacteria but B. suis biovar 2 are zoonotic. Live attenuated B. abortus S19 and B. melitensis Rev1 are effective vaccines in domestic ruminants, though both can infect humans. However, there is no swine brucellosis vaccine. Here, we investigated the potential use as vaccines of B. suis biovar 2 rough (R) lipopolysaccharide (LPS) mutants totally lacking O-chain (Bs2ΔwbkF) or only producing internal O-chain precursors (Bs2Δwzm) and mutants with a smooth (S) LPS defective in the core lateral branch (Bs2ΔwadB and Bs2ΔwadD). We also investigated mutants in the pyruvate phosphate dikinase (Bs2ΔppdK) and phosphoenolpyruvate carboxykinase (Bs2ΔpckA) genes encoding enzymes bridging phosphoenolpyruvate and the tricarboxylic acid cycle. When tested in the OIE mouse model at the recommended R or S vaccine doses (108 and 105 CFU, respectively), CFU/spleen of all LPS mutants were reduced with respect to the wild type and decreased faster for the R than for the S mutants. At those doses, protection against B. suis was similar for Bs2ΔwbkF, Bs2Δwzm, Bs2ΔwadB and the Rev1 control (105 CFU). As described before for B. abortus, B. suis biovar 2 carried a disabled pckA so that a double mutant Bs2ΔppdKΔpckA had the same metabolic phenotype as Bs2ΔppdK and ppdK mutation was enough to generate attenuation. At 105 CFU, Bs2ΔppdK also conferred the same protection as Rev1. As compared to other B. suis vaccine candidates described before, the mutants described here simultaneously carry irreversible deletions easy to identify as vaccine markers, lack antibiotic-resistance markers and were obtained in a non-zoonotic background. Since R vaccines should not elicit antibodies to the S-LPS and wzm mutants carry immunogenic O-chain precursors and did not improve Bs2ΔwbkF, the latter seems a better R vaccine candidate than Bs2Δwzm. However, taking into account that all R vaccines interfere in ELISA and other widely used assays, whether Bs2ΔwbkF is advantageous over Bs2ΔwadB or Bs2ΔppdK requires experiments in the natural host.
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Affiliation(s)
- Beatriz Aragón-Aranda
- Instituto de Salud Tropical (ISTUN), Instituto de Investigación Sanitaria de Navarra (IdiSNA) and Dpto. de Microbiología y Parasitología, Universidad de Navarra, c/Irunlarrea 1, 31008, Pamplona, Spain
| | - María Jesús de Miguel
- Unidad de Producción y Sanidad Animal, Centro de Investigación y Tecnología Agroalimentaria de Aragón (CITA), Avda. Montañana 930, 50059, Zaragoza, Spain.,Instituto Agroalimentario de Aragón-IA2 (CITA-Universidad de Zaragoza), Zaragoza, Spain
| | - Leticia Lázaro-Antón
- Instituto de Salud Tropical (ISTUN), Instituto de Investigación Sanitaria de Navarra (IdiSNA) and Dpto. de Microbiología y Parasitología, Universidad de Navarra, c/Irunlarrea 1, 31008, Pamplona, Spain
| | - Miriam Salvador-Bescós
- Instituto de Salud Tropical (ISTUN), Instituto de Investigación Sanitaria de Navarra (IdiSNA) and Dpto. de Microbiología y Parasitología, Universidad de Navarra, c/Irunlarrea 1, 31008, Pamplona, Spain
| | - Amaia Zúñiga-Ripa
- Instituto de Salud Tropical (ISTUN), Instituto de Investigación Sanitaria de Navarra (IdiSNA) and Dpto. de Microbiología y Parasitología, Universidad de Navarra, c/Irunlarrea 1, 31008, Pamplona, Spain
| | - Ignacio Moriyón
- Instituto de Salud Tropical (ISTUN), Instituto de Investigación Sanitaria de Navarra (IdiSNA) and Dpto. de Microbiología y Parasitología, Universidad de Navarra, c/Irunlarrea 1, 31008, Pamplona, Spain
| | - Maite Iriarte
- Instituto de Salud Tropical (ISTUN), Instituto de Investigación Sanitaria de Navarra (IdiSNA) and Dpto. de Microbiología y Parasitología, Universidad de Navarra, c/Irunlarrea 1, 31008, Pamplona, Spain
| | - Pilar M Muñoz
- Unidad de Producción y Sanidad Animal, Centro de Investigación y Tecnología Agroalimentaria de Aragón (CITA), Avda. Montañana 930, 50059, Zaragoza, Spain. .,Instituto Agroalimentario de Aragón-IA2 (CITA-Universidad de Zaragoza), Zaragoza, Spain.
| | - Raquel Conde-Álvarez
- Instituto de Salud Tropical (ISTUN), Instituto de Investigación Sanitaria de Navarra (IdiSNA) and Dpto. de Microbiología y Parasitología, Universidad de Navarra, c/Irunlarrea 1, 31008, Pamplona, Spain.
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22
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Deng X, Li M, Liu L, Zhang J, Zhang Y, Guo J, Zhao T, Cao S, Li Z, Zhang H. Functional analysis of Bucella reveals transcriptional regulation of MarR. Microb Pathog 2020; 144:104201. [PMID: 32325238 DOI: 10.1016/j.micpath.2020.104201] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 04/07/2020] [Accepted: 04/08/2020] [Indexed: 12/15/2022]
Abstract
Brucellosis is a zoonotic infectious disease caused by Brucella infection. MarR-family transcription factors are closely related to diverse physiological functions necessary for many pathogens adaptation to environmental changes. However, whether the MarR-family transcription factors are involved in virulence, mediated inflammatory responses and regulated virulence gene expression in the intracellular pathogen Brucella are still unknown. Therefore, we created a 2308ΔMarR6 mutant of B. abortus 2308 (S2308). Virulence and inflammatory cytokines assays were performed using a murine macrophage cell line (RAW 264.7). We also performed chromatin immunoprecipitation of MarR6 followed by next-generation sequencing (ChIP-seq). The results showed that 2308ΔMarR6 was significantly reduced survival capability in RAW 264.7. After the macrophages were infected with 2308ΔMarR6, the levels of tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β), interleukin-6 (IL-6), interleukin-12 (IL-12), interferon-gamma (IFN-γ) and macrophage chemoattractant protein-1 (MCP-1) were decreased and were significantly lower than that for the S2308-infected group, indicating that the 2308ΔMarR6 mutant could reduce the secretion of inflammatory cytokines. Furthermore, we detected 122 intergenic ChIP-seq peaks of MarR6 binding distributed across the Brucella genome. Taken together, the research has recorded valuable data about MarR6. Our findings are of great significance in elucidating the function of MarR6.
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Affiliation(s)
- Xingmei Deng
- College of Animal Science and Technology, Shihezi University, Shihezi, 832003, Xinjiang Province, China
| | - Min Li
- College of Animal Science and Technology, Shihezi University, Shihezi, 832003, Xinjiang Province, China
| | - Liangbo Liu
- College of Animal Science and Technology, Shihezi University, Shihezi, 832003, Xinjiang Province, China
| | - Jing Zhang
- College of Animal Science and Technology, Shihezi University, Shihezi, 832003, Xinjiang Province, China
| | - Yu Zhang
- College of Animal Science and Technology, Shihezi University, Shihezi, 832003, Xinjiang Province, China
| | - Jia Guo
- College of Animal Science and Technology, Shihezi University, Shihezi, 832003, Xinjiang Province, China
| | - Tianyi Zhao
- College of Animal Science and Technology, Shihezi University, Shihezi, 832003, Xinjiang Province, China
| | - Shuzhu Cao
- College of Animal Science and Technology, Shihezi University, Shihezi, 832003, Xinjiang Province, China
| | - Zhiqiang Li
- College of Biology and Food, Shangqiu Normal University, Shangqiu, 476000, Henan Province, China.
| | - Hui Zhang
- College of Animal Science and Technology, Shihezi University, Shihezi, 832003, Xinjiang Province, China.
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23
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Sacchini L, Wahab T, Di Giannatale E, Zilli K, Abass A, Garofolo G, Janowicz A. Whole Genome Sequencing for Tracing Geographical Origin of Imported Cases of Human Brucellosis in Sweden. Microorganisms 2019; 7:E398. [PMID: 31561594 PMCID: PMC6843523 DOI: 10.3390/microorganisms7100398] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Revised: 09/23/2019] [Accepted: 09/24/2019] [Indexed: 11/17/2022] Open
Abstract
Human infections with Brucella melitensis are occasionally reported in Sweden, despite the fact that the national flocks of sheep and goats are officially free from brucellosis. The aim of our study was to analyze 103 isolates of B. melitensis collected from patients in Sweden between 1994 and 2016 and determine their putative geographic origin using whole genome sequencing (WGS)-based tools. The majority of the strains were assigned to East Mediterranean and African lineages. Both in silico Multiple Loci VNTR (Variable Number of Tandem Repeats) Analysis (MLVA) and core genome Multilocus Sequence Typing (cgMLST) analyses identified countries of the Middle East as the most probable source of origin of the majority of the strains. Isolates collected from patients with travel history to Iraq or Syria were often associated with genotypes from Turkey, as the cgMLST profiles from these countries clustered together. Sixty strains were located within a distance of 20 core genes to related genotypes from the publicly available database, and for eighteen isolates, the closest genotype was different by more than 50 loci. Our study showed that WGS based tools are effective in tracing back the geographic origin of infection of patients with unknown travel status, provided that public sequences from the location of the source are available.
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Affiliation(s)
- Lorena Sacchini
- National and OIE Reference Laboratory for Brucellosis, Istituto Zooprofilattico Sperimentale dell'Abruzzo e del Molise "G. Caporale", 64100 Teramo, Italy.
| | - Tara Wahab
- Department of Microbiology, Public Health Agency of Sweden, 171 82 Solna, Sweden.
| | - Elisabetta Di Giannatale
- National and OIE Reference Laboratory for Brucellosis, Istituto Zooprofilattico Sperimentale dell'Abruzzo e del Molise "G. Caporale", 64100 Teramo, Italy.
| | - Katiuscia Zilli
- National and OIE Reference Laboratory for Brucellosis, Istituto Zooprofilattico Sperimentale dell'Abruzzo e del Molise "G. Caporale", 64100 Teramo, Italy.
| | - Anna Abass
- National and OIE Reference Laboratory for Brucellosis, Istituto Zooprofilattico Sperimentale dell'Abruzzo e del Molise "G. Caporale", 64100 Teramo, Italy.
| | - Giuliano Garofolo
- National and OIE Reference Laboratory for Brucellosis, Istituto Zooprofilattico Sperimentale dell'Abruzzo e del Molise "G. Caporale", 64100 Teramo, Italy.
| | - Anna Janowicz
- National and OIE Reference Laboratory for Brucellosis, Istituto Zooprofilattico Sperimentale dell'Abruzzo e del Molise "G. Caporale", 64100 Teramo, Italy.
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