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Tenk M, Tóth G, Márton Z, Sárközi R, Szórádi A, Makrai L, Pálmai N, Szalai T, Albert M, Fodor L. Examination of the Virulence of Actinobacillus pleuropneumoniae Serovar 16 in Pigs. Vet Sci 2024; 11:62. [PMID: 38393080 PMCID: PMC10892955 DOI: 10.3390/vetsci11020062] [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: 01/02/2024] [Revised: 01/20/2024] [Accepted: 01/23/2024] [Indexed: 02/25/2024] Open
Abstract
Different virulence variants of A. pleuropneumoniae are involved in the etiology of porcine pleuropneumonia. The purpose of the present trial was examination of the virulence of the Actinobacillus pleuropneumoniae A-85/14 strain, the type strain of serovar 16, in an animal challenge experiment. Thirty 12-week-old piglets seronegative for A. pleuropneumoniae were allocated into three trial groups each of 10 animals, and they were infected intranasally with 106, 107, or 108 colony forming units (cfu) of the strain, respectively. Clinical signs were recorded twice a day, and the animals were euthanized 6 days after the infection. Typical clinical signs and postmortem lesions of porcine pleuropneumonia were seen in the animals of each trial group; however, they were generally mild, and no significant differences could be seen between the three groups. Even 106 colony forming units of A. pleuropneumoniae A-85/14 strain could induce clinical signs and lesions. Based on these results, the type strain of serovar 16 of A. pleuropneumoniae must be regarded as a typical pathogenic strain of the species.
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Affiliation(s)
- Miklós Tenk
- CEVA-Phylaxia Veterinary Biologicals Co., Ltd., Szállás u. 5, H-1107 Budapest, Hungary; (M.T.); (Z.M.); (A.S.); (N.P.); (T.S.); (M.A.)
- Department of Microbiology and Infectious Diseases, University of Veterinary Medicine, Hungária Krt. 23-25, H-1143 Budapest, Hungary; (G.T.); (R.S.); (L.M.)
| | - Gergely Tóth
- Department of Microbiology and Infectious Diseases, University of Veterinary Medicine, Hungária Krt. 23-25, H-1143 Budapest, Hungary; (G.T.); (R.S.); (L.M.)
| | - Zsuzsanna Márton
- CEVA-Phylaxia Veterinary Biologicals Co., Ltd., Szállás u. 5, H-1107 Budapest, Hungary; (M.T.); (Z.M.); (A.S.); (N.P.); (T.S.); (M.A.)
| | - Rita Sárközi
- Department of Microbiology and Infectious Diseases, University of Veterinary Medicine, Hungária Krt. 23-25, H-1143 Budapest, Hungary; (G.T.); (R.S.); (L.M.)
| | - Alejandra Szórádi
- CEVA-Phylaxia Veterinary Biologicals Co., Ltd., Szállás u. 5, H-1107 Budapest, Hungary; (M.T.); (Z.M.); (A.S.); (N.P.); (T.S.); (M.A.)
| | - László Makrai
- Department of Microbiology and Infectious Diseases, University of Veterinary Medicine, Hungária Krt. 23-25, H-1143 Budapest, Hungary; (G.T.); (R.S.); (L.M.)
| | - Nimród Pálmai
- CEVA-Phylaxia Veterinary Biologicals Co., Ltd., Szállás u. 5, H-1107 Budapest, Hungary; (M.T.); (Z.M.); (A.S.); (N.P.); (T.S.); (M.A.)
| | - Tamás Szalai
- CEVA-Phylaxia Veterinary Biologicals Co., Ltd., Szállás u. 5, H-1107 Budapest, Hungary; (M.T.); (Z.M.); (A.S.); (N.P.); (T.S.); (M.A.)
| | - Mihály Albert
- CEVA-Phylaxia Veterinary Biologicals Co., Ltd., Szállás u. 5, H-1107 Budapest, Hungary; (M.T.); (Z.M.); (A.S.); (N.P.); (T.S.); (M.A.)
| | - László Fodor
- Department of Microbiology and Infectious Diseases, University of Veterinary Medicine, Hungária Krt. 23-25, H-1143 Budapest, Hungary; (G.T.); (R.S.); (L.M.)
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Soto Perezchica MM, Guerrero Barrera AL, Avelar Gonzalez FJ, Quezada Tristan T, Macias Marin O. Actinobacillus pleuropneumoniae, surface proteins and virulence: a review. Front Vet Sci 2023; 10:1276712. [PMID: 38098987 PMCID: PMC10720984 DOI: 10.3389/fvets.2023.1276712] [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: 08/12/2023] [Accepted: 10/17/2023] [Indexed: 12/17/2023] Open
Abstract
Actinobacillus pleuropneumoniae (App) is a globally distributed Gram-negative bacterium that produces porcine pleuropneumonia. This highly contagious disease produces high morbidity and mortality in the swine industry. However, no effective vaccine exists to prevent it. The infection caused by App provokes characteristic lesions, such as edema, inflammation, hemorrhage, and necrosis, that involve different virulence factors. The colonization and invasion of host surfaces involved structures and proteins such as outer membrane vesicles (OMVs), pili, flagella, adhesins, outer membrane proteins (OMPs), also participates proteases, autotransporters, and lipoproteins. The recent findings on surface structures and proteins described in this review highlight them as potential immunogens for vaccine development.
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Affiliation(s)
- María M. Soto Perezchica
- Laboratorio de Biología Celular y Tisular, Departamento de Morfología, Centro de Ciencias Básicas, Universidad Autónoma de Aguascalientes, Aguascalientes, Mexico
| | - Alma L. Guerrero Barrera
- Laboratorio de Biología Celular y Tisular, Departamento de Morfología, Centro de Ciencias Básicas, Universidad Autónoma de Aguascalientes, Aguascalientes, Mexico
| | - Francisco J. Avelar Gonzalez
- Laboratorio de Estudios Ambientales, Departamento de Fisiología y Farmacología, Centro de Ciencias Básicas, Universidad Autónoma de Aguascalientes, Aguascalientes, Mexico
| | - Teodulo Quezada Tristan
- Departamento de Ciencias Veterinaria, Centro de Ciencias Agropecuarias, Universidad Autónoma de Aguascalientes, Aguascalientes, Mexico
| | - Osvaldo Macias Marin
- Laboratorio de Biología Celular y Tisular, Departamento de Morfología, Centro de Ciencias Básicas, Universidad Autónoma de Aguascalientes, Aguascalientes, Mexico
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