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Sacristán C, Ewbank AC, Sánchez-Sarmiento AM, Duarte-Benvenuto A, Borges JCG, Rebelo VA, Díaz-Delgado J, Borges Keid L, Catão-Dias JL. Erysipelas in a stranded common bottlenose dolphin: first report in a South American odontocete. Braz J Microbiol 2022; 53:2199-2203. [PMID: 35962226 PMCID: PMC9679089 DOI: 10.1007/s42770-022-00810-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Accepted: 08/06/2022] [Indexed: 01/13/2023] Open
Abstract
Erysipelas is a zoonotic disease caused by Erysipelothrix rhusiopathiae. In cetaceans, this disease has two main clinical forms: a cutaneous one, grossly characterized by rhomboid lesions, and a septicemic and often fatal form. Erysipelas is considered an important cause of morbidity and mortality in captive cetaceans; however, information in free-ranging cetaceans is limited. An adult common bottlenose dolphin (Tursiops truncatus) was found dead and in advanced autolysis in Paraíba state, northeastern Brazil, on July 19th, 2020. Upon gross examination, 80% of the body surface presented disseminated rhomboid cutaneous lesions ranging from 4 to 6 cm-width, characterized by well-defined edges and occasional ulceration, consistent with erysipelas. Additionally, anthropic-made postmortem linear cuts and partial mechanical removal of the flank musculature were noted. Skin samples were collected for histopathologic and molecular analyses. Microscopically, it was possible to observe multifocal dermatitis with vasculitis. Erysipelothrix sp. was detected by PCR. Despite previous reports of human consumption of cetacean meat in northeastern Brazil, the observed marks and advanced carcass autolysis suggested that the animal was most likely used as bait for fishing instead of human intake. This case highlights the value of postmortem examination and PCR even in poorly preserved cadavers and contributes to the understanding of the epidemiology of cutaneous erysipelas in free-ranging cetaceans (first report in an odontocete from the Southern Hemisphere). Due to the zoonotic potential of certain Erysipelothrix species (i.e., E. rhusiopathiae), active public health policies are required to inform field professionals and the general public about the health threats associated with marine mammal manipulation and consumption.
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Affiliation(s)
- Carlos Sacristán
- Laboratory of Wildlife Comparative Pathology, School of Veterinary Medicine and Animal Science, University of São Paulo, 05508-270, São Paulo, Brazil.
- Centro de Investigación en Sanidad Animal (CISA-INIA), CSIC, 28130, Valdeolmos, Spain.
| | - Ana Carolina Ewbank
- Laboratory of Wildlife Comparative Pathology, School of Veterinary Medicine and Animal Science, University of São Paulo, 05508-270, São Paulo, Brazil
| | - Angélica María Sánchez-Sarmiento
- Laboratory of Wildlife Comparative Pathology, School of Veterinary Medicine and Animal Science, University of São Paulo, 05508-270, São Paulo, Brazil
- Department of Veterinary Medicine, Faculty of Animal Science and Food Engineering, University of São Paulo, Pirassununga, 13635-900, São Paulo, Brazil
| | - Aricia Duarte-Benvenuto
- Laboratory of Wildlife Comparative Pathology, School of Veterinary Medicine and Animal Science, University of São Paulo, 05508-270, São Paulo, Brazil
| | - João Carlos Gomes Borges
- Fundação Mamíferos Aquáticos, São Cristóvão, Sergipe, 49.100-000, Brazil
- Graduate Program in Ecology and Environmental Monitoring, Federal University of Paraíba, Rio Tinto, Paraíba, 58051-900, Brazil
| | - Vanessa Araújo Rebelo
- Fundação Mamíferos Aquáticos, São Cristóvão, Sergipe, 49.100-000, Brazil
- Graduate Program in Ecology and Environmental Monitoring, Federal University of Paraíba, Rio Tinto, Paraíba, 58051-900, Brazil
| | - Josué Díaz-Delgado
- Texas A&M Veterinary Medical Diagnostic Laboratory, College Station, TX, 77843, USA
| | - Lara Borges Keid
- Department of Veterinary Medicine, Faculty of Animal Science and Food Engineering, University of São Paulo, Pirassununga, 13635-900, São Paulo, Brazil
| | - José Luiz Catão-Dias
- Laboratory of Wildlife Comparative Pathology, School of Veterinary Medicine and Animal Science, University of São Paulo, 05508-270, São Paulo, Brazil
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Llano HAB, Zavatieri Polato H, Borges Keid L, Ferreira de Souza Oliveira TM, Zwarg T, de Oliveira AS, Sanches TC, Joppert AM, Gondim LFP, Martins Soares R. Molecular screening for Sarcocystidae in muscles of wild birds from Brazil suggests a plethora of intermediate hosts for Sarcocystis falcatula. Int J Parasitol Parasites Wildl 2022; 17:230-238. [PMID: 35282411 PMCID: PMC8914476 DOI: 10.1016/j.ijppaw.2022.03.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2021] [Revised: 02/28/2022] [Accepted: 03/01/2022] [Indexed: 12/02/2022]
Abstract
The genus Sarcocystis and the species Toxoplasma gondii are the most prevalent sarcocystid organisms found in birds. Molecular phylogenies based on the first internal transcribed spacer of the ribosomal coding DNA (ITS1) have been widely used to identify them. Here, pectoral muscles from 400 wild birds from Brazil were screened by means of molecular methods using nested PCR, and Sanger sequencing yielded amplicons. A pan-sarcocystid ITS1-directed nested PCR revealed 28 birds infected by Sarcocystis falcatula (ten Piciformes, eight Psittaciformes, five Columbiformes, two Accipitriformes, one Anseriformes, one Passeriformes and one Strigiformes); one infected by Sarcocystis halieti (one Accipitriformes); nine infected by unknown or undescribed Sarcocystis (six Passeriformes, one Piciformes, one Cathartiformes and one Cuculiformes); and six harboring Toxoplasma gondii DNA (three Pelecaniformes, two Falconiformes and one Columbiformes). Samples harboring S. falcatula-related ITS1 sequences were further characterized by means of PCR and sequencing of genetic sequences of three surface antigen coding genes (SAGs). From this, 10 new allelic combinations of SAGs (SAG2, SAG3 and SAG4) were identified, in addition to 11 SAG allelic combinations already found in Brazil. Samples with S. falcatula-unrelated ITS1 sequences were further characterized by means of PCR and sequencing of cytochrome c oxidase subunit I coding sequences (CO1) and 18S ribosomal DNA gene (18S rDNA). This study was the first extensive survey of wild birds in Brazil for Sarcocystidae species. It provides the first molecular evidence of natural S. falcatula infection in 14 species, including in the order Piciformes, and shows the high genetic diversity of S. falcatula in intermediate hosts in South America. Evidence of occurrence of at least three non-described species of Sarcocystis was also presented in this study. This survey corroborated the ubiquity of T. gondii infection but revealed surprisingly low prevalence of this parasite (1.5%). Extensive survey of free-living wild birds in Brazil for Sarcocystidae species. Sarcocystis falcatula was detected in Piciformes birds for the first time. Sarcocystis falcatula has an extensive genetic diversity in Brazil. Three non-described species of Sarcocystis were detected. Sarcocystis halieti was detected for the first time in the Americas.
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Affiliation(s)
- Horwald A B Llano
- Investigation Group (GINVER), School of Veterinary Medicine, Corporación Universitaria Remington, Medellín, Colombia.,Department of Preventive Medicine and Animal Health, School of Veterinary Medicina and Animal Science, University of São Paulo (USP), São Paulo, SP, Brazil
| | - Heloise Zavatieri Polato
- Department of Preventive Medicine and Animal Health, School of Veterinary Medicina and Animal Science, University of São Paulo (USP), São Paulo, SP, Brazil
| | - Lara Borges Keid
- Department of Veterinary Medicine, School of Animal Science and Food Engineering, University of São Paulo (USP), Pirassununga, SP, Brazil
| | | | - Ticiana Zwarg
- The Fauna Division of the Municipal Secretariat for Green and Environment of the Municipality of São Paulo, SP, Brazil
| | - Alice S de Oliveira
- The Fauna Division of the Municipal Secretariat for Green and Environment of the Municipality of São Paulo, SP, Brazil
| | - Thaís C Sanches
- The Fauna Division of the Municipal Secretariat for Green and Environment of the Municipality of São Paulo, SP, Brazil
| | - Adriana M Joppert
- The Fauna Division of the Municipal Secretariat for Green and Environment of the Municipality of São Paulo, SP, Brazil
| | - Luís F P Gondim
- Department of Anatomy, Pathology and Clinics, School of Veterinary Medicine and Animal Science, Federal University of Bahia (UFBA), Salvador, BA, Brazil
| | - Rodrigo Martins Soares
- Department of Preventive Medicine and Animal Health, School of Veterinary Medicina and Animal Science, University of São Paulo (USP), São Paulo, SP, Brazil
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de Sousa GP, Soares RM, Borges JCG, Brito APD, Oliveira DCR, Faita T, Attademo FLN, Luna FDO, de Oliveira REM, Freitas CIA, Vergara-Parente JE, Keid LB. Brucella Infection Investigation in Cetaceans and Manatees in Northeast Brazil. J Aquat Anim Health 2021; 33:125-132. [PMID: 34121245 DOI: 10.1002/aah.10129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Revised: 04/07/2021] [Accepted: 04/12/2021] [Indexed: 06/12/2023]
Abstract
Among the bacterial infections that impair the health status of marine mammals, those caused by Brucella spp. are the most reported worldwide. Brucella infections in marine mammals can result in acute or chronic disease and are associated with variable clinical outcomes, depending on the organ involved during the infectious process, infection route, host immunity, and strain pathogenicity. Asymptomatic infections may also occur. The current study expands the investigation of Brucella infection in northeast Brazil by analyzing 19 dead, stranded cetaceans and 52 Antillean manatees Trichechus manatus manatus. The manatees included 8 dead, captive manatees and 44 live specimens, of which 10 were analyzed only after reintroduction into the wild as part of a rehabilitation program, 9 were analyzed both while in captivity or semi-captivity and after reintroduction, 20 were sampled only in captivity or semi-captivity, and 5 were free-living manatees. Serological tests were used to screen for antibodies against smooth Brucella spp. Whole blood, swabs, and tissue samples were screened for Brucella spp. DNA by PCR. Samples with positive PCR results were cultured for Brucella spp. isolation. All manatees yielded negative results in serological and molecular tests. Brucella spp. DNA was detected in the kidney of one adult Guiana dolphin Sotalia guianensis exhibiting necrosis in the liver. No growth of Brucella spp. was observed via microbiological culturing. This study is the first report of Brucella spp. DNA detection in cetaceans in the state of Pernambuco, and it highlights the importance of conducting systematic monitoring for the presence of Brucella infection in marine mammals along the Brazilian coast, especially in the northeast region, where several cases have been reported.
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Affiliation(s)
- Gláucia Pereira de Sousa
- Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, Pirassununga, São Paulo, 13635-900, Brazil
- Centro Nacional de Pesquisa e Conservação de Mamíferos Aquáticos, Instituto Chico Mendes de Conservação da Biodiversidade, Santos, São Paulo, 11050-031, Brazil
| | - Rodrigo Martins Soares
- Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, Pirassununga, São Paulo, 13635-900, Brazil
| | - João Carlos Gomes Borges
- Fundação Mamíferos Aquáticos, Recife, Pernambuco, 52051-305, Brazil
- Programa de Pós-Graduação em Ecologia e Monitoramento Ambiental, Universidade Federal da Paraíba, Rio Tinto, Paraíba, 58297-000, Brazil
| | - Ana Paula Domingos Brito
- Centro Nacional de Pesquisa e Conservação da Biodiversidade Marinha do Nordeste, Instituto Chico Mendes de Conservação da Biodiversidade, Ilha de Itamaracá, Pernambuco, 53900-000, Brazil
| | - Daniella Carvalho Ribeiro Oliveira
- Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, Pirassununga, São Paulo, 13635-900, Brazil
| | - Thalita Faita
- Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, Pirassununga, São Paulo, 13635-900, Brazil
| | - Fernanda Loffler Niemeyer Attademo
- Projeto Cetáceos da Costa Branca, Universidade do Estado do Rio Grande do Norte, Natal, Rio Grande do Norte, 59080-590, Brazil
- Centro Nacional de Pesquisa e Conservação de Mamíferos Aquáticos, Instituto Chico Mendes de Conservação da Biodiversidade, Ilha de Itamaracá, Pernambuco, 53900-000, Brazil
| | - Fábia de Oliveira Luna
- Centro Nacional de Pesquisa e Conservação de Mamíferos Aquáticos, Instituto Chico Mendes de Conservação da Biodiversidade, Santos, São Paulo, 11050-031, Brazil
| | - Radan Elvis Matias de Oliveira
- Projeto Cetáceos da Costa Branca, Universidade do Estado do Rio Grande do Norte, Natal, Rio Grande do Norte, 59080-590, Brazil
- Programa de Pós-Graduação em Ciência Animal, Universidade Federal Rural do Semi-Árido, Mossoró, Rio Grande do Norte, 59625-900, Brazil
| | - Carlos Iberê Alves Freitas
- Departamento de Ciências da Saúde, Universidade Federal Rural do Semi-Árido, Mossoró, Rio Grande do Norte, 59625-900, Brazil
| | | | - Lara Borges Keid
- Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo, Pirassununga, São Paulo, 13635-900, Brazil
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Leonel JAF, Tannihão B, Arantes JA, Vioti G, Benassi JC, Brandi RA, Ferreira HL, Keid LB, Soares RM, Oliveira TMFDS. Detection of Leishmania infantum DNA in blood samples of horses (Equus caballus) and donkeys (Equus asinus) by PCR. Rev Inst Med Trop Sao Paulo 2021; 63:e12. [PMID: 33533815 PMCID: PMC7845934 DOI: 10.1590/s1678-9946202163012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Accepted: 12/14/2020] [Indexed: 12/01/2022] Open
Abstract
Visceral leishmaniasis (VL) is a neglected tropical disease caused by the Leishmania infantum parasite. The protozoan is able to infect several domestic and wild mammals. Since the first report on Leishmania spp. infection in horses in South America, leishmaniasis in equids has been highlighted in Brazil. A molecular epidemiological survey was carried out to verify the occurrence of Leishmania spp. DNA in horses and donkeys, in leishmaniases endemic areas in Sao Paulo State, Brazil. To this end, blood samples were obtained from 107 horses and 36 donkeys and subjected to DNA extraction followed by PCR targeting the ITS-1 region. Among the horses and donkeys, 1.87% (2/107) and 8.33% (3/36) were positive by PCR, respectively. The DNA sequencing of the ITS-1 amplification products confirmed L. infantum DNA in these animals. Our results suggest that horses and donkeys from non-VL and VL endemic areas of São Paulo State may be infected by the parasite.
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Affiliation(s)
- João Augusto Franco Leonel
- Universidade de São Paulo, Faculdade de Zootecnia e Engenharia de Alimentos, Departamento de Medicina Veterinária, Laboratório de Medicina Veterinária Preventiva Aplicada, Pirassununga, São Paulo, Brazil.,Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, Departamento de Medicina Veterinária Preventiva e Saúde Animal, Programa de Pós-Graduação em Epidemiologia Experimental Aplicada às Zoonoses, Pirassununga, São Paulo, Brazil
| | - Bruna Tannihão
- Universidade de São Paulo, Faculdade de Zootecnia e Engenharia de Alimentos, Departamento de Medicina Veterinária, Laboratório de Medicina Veterinária Preventiva Aplicada, Pirassununga, São Paulo, Brazil
| | - Julia Assis Arantes
- Universidade de São Paulo, Faculdade de Zootecnia e Engenharia de Alimentos, Departamento de Medicina Veterinária, Programa de Pós-Graduação em Biociência Animal, Pirassununga, São Paulo, Brazil
| | - Geovanna Vioti
- Universidade de São Paulo, Faculdade de Zootecnia e Engenharia de Alimentos, Departamento de Medicina Veterinária, Laboratório de Medicina Veterinária Preventiva Aplicada, Pirassununga, São Paulo, Brazil.,Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, Departamento de Medicina Veterinária Preventiva e Saúde Animal, Programa de Pós-Graduação em Epidemiologia Experimental Aplicada às Zoonoses, Pirassununga, São Paulo, Brazil
| | - Julia Cristina Benassi
- Universidade de São Paulo, Faculdade de Zootecnia e Engenharia de Alimentos, Departamento de Medicina Veterinária, Laboratório de Medicina Veterinária Preventiva Aplicada, Pirassununga, São Paulo, Brazil
| | - Roberta Ariboni Brandi
- Universidade de São Paulo, Faculdade de Zootecnia e Engenharia de Alimentos, Departamento de Zootecnia, Pirassununga, São Paulo, Brazil
| | - Helena Lage Ferreira
- Universidade de São Paulo, Faculdade de Zootecnia e Engenharia de Alimentos, Departamento de Medicina Veterinária, Laboratório de Medicina Veterinária Preventiva Aplicada, Pirassununga, São Paulo, Brazil.,Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, Departamento de Medicina Veterinária Preventiva e Saúde Animal, Programa de Pós-Graduação em Epidemiologia Experimental Aplicada às Zoonoses, Pirassununga, São Paulo, Brazil
| | - Lara Borges Keid
- Universidade de São Paulo, Faculdade de Zootecnia e Engenharia de Alimentos, Departamento de Medicina Veterinária, Laboratório de Medicina Veterinária Preventiva Aplicada, Pirassununga, São Paulo, Brazil.,Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, Departamento de Medicina Veterinária Preventiva e Saúde Animal, Programa de Pós-Graduação em Epidemiologia Experimental Aplicada às Zoonoses, Pirassununga, São Paulo, Brazil
| | - Rodrigo Martins Soares
- Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, Departamento de Medicina Veterinária Preventiva e Saúde Animal, Programa de Pós-Graduação em Epidemiologia Experimental Aplicada às Zoonoses, Pirassununga, São Paulo, Brazil.,Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, Departamento de Medicina Veterinária Preventiva e Saúde Animal, Pirassununga, São Paulo, Brazil
| | - Trícia Maria Ferreira de Sousa Oliveira
- Universidade de São Paulo, Faculdade de Zootecnia e Engenharia de Alimentos, Departamento de Medicina Veterinária, Laboratório de Medicina Veterinária Preventiva Aplicada, Pirassununga, São Paulo, Brazil.,Universidade de São Paulo, Faculdade de Medicina Veterinária e Zootecnia, Departamento de Medicina Veterinária Preventiva e Saúde Animal, Programa de Pós-Graduação em Epidemiologia Experimental Aplicada às Zoonoses, Pirassununga, São Paulo, Brazil
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Vioti G, Leonel JAF, Lemes KM, Pereira VF, Ferreira HL, Keid LB, Madureira EH, Soares RM, Benassi JC, Oliveira TMFDS. Molecular detection of Leishmania spp. in cattle from Brazil by means of PCR using internal transcribed spacer 1. ACTA ACUST UNITED AC 2019; 28:303-305. [PMID: 31215604 DOI: 10.1590/s1984-29612019003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Accepted: 01/22/2019] [Indexed: 11/21/2022]
Abstract
Leishmania spp. are important agents of human and animal leishmaniases that have an important impact on public health. In this study, we aimed to detect the circulation of Leishmania spp. in cattle from a visceral leishmaniasis non-endemic area of the state of São Paulo, Brazil. DNA was extracted from blood samples from 100 heifers in the municipality of Pirassununga and was amplified using primers specific for the first internal transcriber spacer (ITS1), to assess the presence of trypanosomatids. The assays revealed that one sample presented bands of between 300 and 350 base pairs. In GenBank, this sample matched 100% with Leishmania infantum (314 base pairs). The results suggest that cattle can be infected by Leishmania infantum in Brazil.
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Affiliation(s)
- Geovanna Vioti
- Programa de Pós-graduação em Epidemiologia Experimental Aplicada às Zoonoses, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo - USP, Pirassununga, SP, Brasil
| | - João Augusto Franco Leonel
- Programa de Pós-graduação em Epidemiologia Experimental Aplicada às Zoonoses, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo - USP, Pirassununga, SP, Brasil
| | - Kleber Menegon Lemes
- Departamento de Reprodução Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo - USP, Pirassununga, SP, Brasil
| | - Vanessa Figueredo Pereira
- Programa de Pós-graduação em Epidemiologia Experimental Aplicada às Zoonoses, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo - USP, Pirassununga, SP, Brasil
| | - Helena Lage Ferreira
- Programa de Pós-graduação em Epidemiologia Experimental Aplicada às Zoonoses, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo - USP, Pirassununga, SP, Brasil.,Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo - USP, Pirassununga, SP, Brasil
| | - Lara Borges Keid
- Programa de Pós-graduação em Epidemiologia Experimental Aplicada às Zoonoses, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo - USP, Pirassununga, SP, Brasil.,Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo - USP, Pirassununga, SP, Brasil
| | - Ed Hoffman Madureira
- Departamento de Reprodução Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo - USP, Pirassununga, SP, Brasil
| | - Rodrigo Martins Soares
- Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo - USP, Pirassununga, SP, Brasil
| | - Júlia Cristina Benassi
- Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo - USP, Pirassununga, SP, Brasil
| | - Trícia Maria Ferreira de Sousa Oliveira
- Programa de Pós-graduação em Epidemiologia Experimental Aplicada às Zoonoses, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo - USP, Pirassununga, SP, Brasil.,Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo - USP, Pirassununga, SP, Brasil
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6
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Fernandes MA, Leonel JAF, Isaac JA, Benassi JC, Silva DT, Spada JCP, Pereira NWB, Ferreira HL, Keid LB, Soares RM, Oliveira TMFDS. Molecular detection of Leishmania infantum DNA according to clinical stages of leishmaniasis in dog. ACTA ACUST UNITED AC 2019; 28:194-202. [PMID: 31188942 DOI: 10.1590/s1984-29612019015] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Accepted: 02/19/2019] [Indexed: 12/20/2022]
Abstract
The aim of this study was to compare molecular tests used to diagnose Leishmania spp. in dogs with different stages of infection. Blood and conjunctival swab (CS) samples from dogs classified in four clinical stages were subjected to different PCR protocols (13A/13B, MC1/MC2, LITSR/L5.8S and LEISH-1/LEISH-2 primers). To the study, 22.3% (48/215) of dogs were classified as without clinical signs, 67.5% (145/215) stage I (mild disease), 7.0% (15/215) stage II (moderate disease) and 3.2% (7/215) stage III (severe disease). The results showed that in blood samples, 13A/13B detected a significant higher number of positive dogs in stage I (25/145) and in total (42/215) (p≤0.05). However, when CS samples were tested, no difference was observed (p>0.05). On the other hand, in blood samples, MC1/MC2 detected significantly fewer positive dogs classified as without clinical signs (0/48), in stage I (0/145) and in total (1/215) (p≤0.05). Likewise, in CS samples, this primers showed also lower detection (1/215) (p≤0.05). So than, we can conclude that PCR on blood samples with 13A/13B primers has greater capacity to detect positive dogs, mainly at the initial of clinical disease than do other primers and MC1/MC2 are not a good choice to detect Leishmania infantum infection in dogs.
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Affiliation(s)
- Murilo Antônio Fernandes
- Laboratório de Medicina Veterinária Preventiva Aplicada, Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo - USP, Pirassununga, SP, Brasil.,Programa de Pós-graduação em Epidemiologia Experimental Aplicada às Zoonoses, Departamento de Medicina Veterinária Preventiva, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo - USP, São Paulo, SP, Brasil
| | - João Augusto Franco Leonel
- Laboratório de Medicina Veterinária Preventiva Aplicada, Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo - USP, Pirassununga, SP, Brasil.,Programa de Pós-graduação em Epidemiologia Experimental Aplicada às Zoonoses, Departamento de Medicina Veterinária Preventiva, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo - USP, São Paulo, SP, Brasil
| | - Jéssica Anzolin Isaac
- Laboratório de Medicina Veterinária Preventiva Aplicada, Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo - USP, Pirassununga, SP, Brasil
| | - Julia Cristina Benassi
- Laboratório de Medicina Veterinária Preventiva Aplicada, Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo - USP, Pirassununga, SP, Brasil
| | - Diogo Tiago Silva
- Laboratório de Medicina Veterinária Preventiva Aplicada, Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo - USP, Pirassununga, SP, Brasil.,Programa de Pós-graduação em Epidemiologia Experimental Aplicada às Zoonoses, Departamento de Medicina Veterinária Preventiva, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo - USP, São Paulo, SP, Brasil
| | - Julio Cesar Pereira Spada
- Laboratório de Medicina Veterinária Preventiva Aplicada, Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo - USP, Pirassununga, SP, Brasil.,Programa de Pós-graduação em Epidemiologia Experimental Aplicada às Zoonoses, Departamento de Medicina Veterinária Preventiva, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo - USP, São Paulo, SP, Brasil
| | - Nuno Wolfgang Balbini Pereira
- Laboratório de Medicina Veterinária Preventiva Aplicada, Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo - USP, Pirassununga, SP, Brasil.,Programa de Pós-graduação em Epidemiologia Experimental Aplicada às Zoonoses, Departamento de Medicina Veterinária Preventiva, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo - USP, São Paulo, SP, Brasil
| | - Helena Lage Ferreira
- Laboratório de Medicina Veterinária Preventiva Aplicada, Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo - USP, Pirassununga, SP, Brasil.,Programa de Pós-graduação em Epidemiologia Experimental Aplicada às Zoonoses, Departamento de Medicina Veterinária Preventiva, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo - USP, São Paulo, SP, Brasil
| | - Lara Borges Keid
- Laboratório de Medicina Veterinária Preventiva Aplicada, Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo - USP, Pirassununga, SP, Brasil.,Programa de Pós-graduação em Epidemiologia Experimental Aplicada às Zoonoses, Departamento de Medicina Veterinária Preventiva, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo - USP, São Paulo, SP, Brasil
| | - Rodrigo Martins Soares
- Programa de Pós-graduação em Epidemiologia Experimental Aplicada às Zoonoses, Departamento de Medicina Veterinária Preventiva, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo - USP, São Paulo, SP, Brasil.,Laboratório de Doenças Parasitárias, Departamento de Medicina Veterinária Preventiva, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo - USP, Pirassununga, SP, Brasil
| | - Trícia Maria Ferreira de Sousa Oliveira
- Laboratório de Medicina Veterinária Preventiva Aplicada, Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo - USP, Pirassununga, SP, Brasil.,Programa de Pós-graduação em Epidemiologia Experimental Aplicada às Zoonoses, Departamento de Medicina Veterinária Preventiva, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo - USP, São Paulo, SP, Brasil
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7
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Ferreira Vicente A, Girault G, Corde Y, Souza Ribeiro Mioni M, Borges Keid L, Jay M, Megid J, Mick V. New insights into phylogeography of worldwide Brucella canis isolates by comparative genomics-based approaches: focus on Brazil. BMC Genomics 2018; 19:636. [PMID: 30153798 PMCID: PMC6114238 DOI: 10.1186/s12864-018-5001-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Accepted: 08/08/2018] [Indexed: 11/20/2022] Open
Abstract
Background Canine brucellosis, due to Brucella canis, is a worldwide zoonosis that remains endemic in South America, including Brazil. Implementation of powerful whole-genome sequencing approaches allowed exploring the Brucella genus considered as monomorphic, with, to date, more than 500 genomes available in public databases. Nevertheless, with under-representation of B. canis genomes −only twenty complete or draft genomes−, lack of knowledge about this species is still considerable. This report describes a comparative genomics-based phylogeographic investigation of 53 B. canis strains, including 28 isolates paired-end sequenced in this work. Results Obtained results allow identifying a SNP panel species-specific to B. canis of 1086 nucleotides. In addition, high-resolution analyses assess the epidemiological relationship between worldwide isolates. Our findings show worldwide strains are distributed among 2 distinct lineages. One of them seems to be specific to South American strains, including Brazil. B. canis South American strains may be identified by a SNP panel of 15 nucleotides, whereas a 22 SNP panel is sufficient to define contamination origin from Brazil. These results lead to the proposal of a possible spread route for dog brucellosis through South America. Additionally, whole-genome analyses highlight the remarkable genomic stability of B. canis strains over time and the sustainability of the infection in São Paulo over 12 year-period. Conclusions Significant increase of B. canis genomes available in public databases provides new insights into B. canis infection in South America, including Brazil, as well as in the world, and also offers new perspectives for the Brucella genus largo sensu. Electronic supplementary material The online version of this article (10.1186/s12864-018-5001-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Acácia Ferreira Vicente
- EU/OIE/FAO & National Reference Laboratory for animal Brucellosis, Animal Health Laboratory, Paris-Est University/Anses, Maisons-Alfort, France.,Molecular Biology Laboratory, Dept. Veterinary Hygiene and Public Health, FMVZ, UNESP, Botucatu, Brazil
| | - Guillaume Girault
- EU/OIE/FAO & National Reference Laboratory for animal Brucellosis, Animal Health Laboratory, Paris-Est University/Anses, Maisons-Alfort, France.
| | - Yannick Corde
- EU/OIE/FAO & National Reference Laboratory for animal Brucellosis, Animal Health Laboratory, Paris-Est University/Anses, Maisons-Alfort, France.,Present Address: Physiology of reproduction and behaviour joint research unit, INRA Val de Loire Centre, Nouzilly, France
| | | | - Lara Borges Keid
- Dept. Veterinary Medicine, University of Animal Science and Food Engineering, USP, Pirassununga, Brazil
| | - Maryne Jay
- EU/OIE/FAO & National Reference Laboratory for animal Brucellosis, Animal Health Laboratory, Paris-Est University/Anses, Maisons-Alfort, France.,Present Address: Anses, Laboratoire de Lyon, UMR Mycoplasmoses des Ruminants, Lyon, France Université de Lyon, VetAgro Sup, UMR Mycoplasmoses des Ruminants, Marcy L'Etoile, France
| | - Jane Megid
- Molecular Biology Laboratory, Dept. Veterinary Hygiene and Public Health, FMVZ, UNESP, Botucatu, Brazil
| | - Virginie Mick
- EU/OIE/FAO & National Reference Laboratory for animal Brucellosis, Animal Health Laboratory, Paris-Est University/Anses, Maisons-Alfort, France.
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8
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Abstract
ABSTRACT: Our goal for this article is to compare several different diagnosis tests for bovine tuberculosis identification. We have performed bacterial isolation, histopathological characterization, acid-fast bacilli (AFB) identification and M. bovis DNA detection. Lesions suggestive of Tuberculosis were sampled from bovine lymph nodes during slaughtering of bovines at an abattoir that operates under federal inspection. The bacterial isolation was performed in solid culture mediums, the histopathological characterization was made by Hematoxylin-eosinstaining, and AFB identification by Ziehl-Neelsen staining. Bacterial DNA detection was performed by Polymerase Chain Reaction (PCR) using DNA from two different sources, directly collected from the tuberculosis-like lesions (PCR followed by nested PCR) and from isolated bacteria. We have concluded that the multi-step approach, including histopathological characterization, bacterial isolation and AFB identification, is strongly recommended to diagnose tuberculosis in bovines. Furthermore, PCR assays using specimens of lesions suggestive of tuberculosis are a faster and more promising way to diagnose the disease. However, it should not be used alone due to the low sensitivity shown in this study.
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9
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Batinga MCA, de Lima JTR, Gregori F, Diniz JA, Muner K, Oliveira TM, Ferreira HL, Soares RM, Keid LB. Comparative application of IS711-based polymerase chain reaction (PCR) and loop-mediated isothermal amplification (LAMP) for canine brucellosis diagnosis. Mol Cell Probes 2018. [DOI: 10.1016/j.mcp.2018.02.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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10
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Aguiar JM, Silva SO, Santos VAD, Taniwaki SA, Oliveira TMFDS, Ferreira HL, Keid LB, Gregori F, Soares RM. Evidence of heterozygosity and recombinant alleles in single cysts of Giardia duodenalis. ACTA ACUST UNITED AC 2018; 25:187-95. [PMID: 27334819 DOI: 10.1590/s1984-29612016031] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2016] [Accepted: 04/19/2016] [Indexed: 11/22/2022]
Abstract
Giardia duodenalis is divided into eight assemblages (named A to H). Isolates of assemblage A are divided into four sub-assemblages (AI, AII, AIII and AIV). While isolates of sub-assemblage AII are almost exclusively detected in human hosts, isolates of assemblage B are encountered in a multitude of animal hosts and humans. Here, we isolated single cysts of G. duodenalis from a human stool sample and found that one of them had overlaps of assemblage AII and B alleles and an unexpectedly high number of variants of the beta-giardin (Bg) and GLORF-C4 (OrfC4) alleles. In addition, one of the Bg alleles of that cyst had a fragment of sub-assemblage AII interspersed with fragments of assemblage B, thus indicating that this allele may be a recombinant between sequences A and B. Our results are unprecedented and put a check on the statement that different assemblages of G. duodenalis represent species with different host specificities.
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Affiliation(s)
- Juliana Martins Aguiar
- Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, Universidade de São Paulo, São Paulo SP , Brasil, Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo - USP, São Paulo, SP, Brasil
| | - Sheila Oliveira Silva
- Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, Universidade de São Paulo, São Paulo SP , Brasil, Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo - USP, São Paulo, SP, Brasil
| | - Valdir Azevedo Dos Santos
- Departamento de Farmácia, Universidade de São Paulo, Universidade de São Paulo, São Paulo SP , Brasil, Laboratório Clínico do Hospital Universitário, Departamento de Farmácia, Universidade de São Paulo - USP, São Paulo, SP, Brasil
| | - Sueli Akemi Taniwaki
- Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, Universidade de São Paulo, São Paulo SP , Brasil, Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo - USP, São Paulo, SP, Brasil
| | - Tricia Maria Ferreira de Sousa Oliveira
- Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo, Universidade de São Paulo, São Paulo SP , Brasil, Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo - USP, São Paulo, SP, Brasil
| | - Helena Lage Ferreira
- Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo, Universidade de São Paulo, São Paulo SP , Brasil, Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo - USP, São Paulo, SP, Brasil
| | - Lara Borges Keid
- Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo, Universidade de São Paulo, São Paulo SP , Brasil, Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo - USP, São Paulo, SP, Brasil
| | - Fábio Gregori
- Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, Universidade de São Paulo, São Paulo SP , Brasil, Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo - USP, São Paulo, SP, Brasil
| | - Rodrigo Martins Soares
- Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, Universidade de São Paulo, São Paulo SP , Brasil, Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo - USP, São Paulo, SP, Brasil
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11
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Keid LB, Chiebao DP, Batinga MCA, Faita T, Diniz JA, Oliveira TMFDS, Ferreira HL, Soares RM. Brucella canis infection in dogs from commercial breeding kennels in Brazil. Transbound Emerg Dis 2017; 64:691-697. [PMID: 28296215 DOI: 10.1111/tbed.12632] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Indexed: 11/27/2022]
Abstract
Canine brucellosis caused by Brucella canis is a neglected zoonosis worldwide and is a leading cause of reproductive failure in dogs, often causing substantial economic losses in breeding kennels. This study aimed to investigate the occurrence of B. canis infection in dogs of commercial breeding kennels located in São Paulo State, Brazil. A total of 753 dogs (183 males and 570 females) from 38 commercial kennels were clinically examined, and blood samples were collected for brucellosis diagnosis through blood culture. The association between clinical manifestations suggestive of brucellosis and positive results through blood culture was determined. Of the 753 dogs tested, 166 (22.0%) had at least one clinical sign suggestive of brucellosis and 158 (20.9%) had positive blood cultures. Seventy-two dogs had positive blood culture and had at least one clinical sign suggestive of brucellosis, while 91 dogs showed at least one clinical manifestation suggestive of brucellosis although blood culture was negative. Of the 38 kennels, 16 (42.1%) had at least one positive dog. The prevalence of infection in each kennel varied from 3.8% to 62.6%. Abortion/stillbirth, failure to conceive and enlargement of lymph nodes were significantly associated with brucellosis in female. No association of clinical signs and positive results in blood culture was observed in males. None of the kennels has been carrying out programmes to control brucellosis, and the sale of infected dogs was considered a common practice yielding risks to the public health, in view of the zoonotic potential of the infection.
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Affiliation(s)
- L B Keid
- Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo, Pirassununga, SP, Brazil
| | - D P Chiebao
- Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, Pirassununga, SP, Brazil
| | - M C A Batinga
- Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, Pirassununga, SP, Brazil
| | - T Faita
- Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo, Pirassununga, SP, Brazil
| | - J A Diniz
- Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, Pirassununga, SP, Brazil
| | - T M F de S Oliveira
- Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo, Pirassununga, SP, Brazil
| | - H L Ferreira
- Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo, Pirassununga, SP, Brazil
| | - R M Soares
- Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, Pirassununga, SP, Brazil
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12
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Lopes EG, Geraldo Junior CA, Marcili A, Silva RD, Keid LB, Oliveira TMFDS, Soares RM. PERFORMANCE OF CONVENTIONAL PCRs BASED ON PRIMERS DIRECTED TO NUCLEAR AND MITOCHONDRIAL GENES FOR THE DETECTION AND IDENTIFICATION OF Leishmania spp. Rev Inst Med Trop Sao Paulo 2016; 58:41. [PMID: 27253743 PMCID: PMC4879998 DOI: 10.1590/s1678-9946201658041] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2015] [Accepted: 11/26/2015] [Indexed: 11/22/2022] Open
Abstract
In visceral leishmaniasis, the detection of the agent is of paramount importance to
identify reservoirs of infection. Here, we evaluated the diagnostic attributes of
PCRs based on primers directed to cytochrome-B (cytB),
cytochrome-oxidase-subunit II (coxII), cytochrome-C
(cytC), and the minicircle-kDNA. Although PCRs directed to
cytB, coxII, cytC were able to detect different species of
Leishmania, and the nucleotide sequence of their amplicons
allowed the unequivocal differentiation of species, the analytical and diagnostic
sensitivity of these PCRs were much lower than the analytical and diagnostic
sensitivity of the kDNA-PCR. Among the 73 seropositive animals, the asymptomatic dogs
had spleen and bone marrow samples collected and tested; only two animals were
positive by PCRs based on cytB, coxII, and
cytC, whereas 18 were positive by the kDNA-PCR. Considering the
kDNA-PCR results, six dogs had positive spleen and bone marrow samples, eight dogs
had positive bone marrow results but negative results in spleen samples and, in four
dogs, the reverse situation occurred. We concluded that PCRs based on
cytB, coxII, and cytC can be
useful tools to identify Leishmania species when used in combination
with automated sequencing. The discordance between the results of the kDNA-PCR in
bone marrow and spleen samples may indicate that conventional PCR lacks sensitivity
for the detection of infected dogs. Thus, primers based on the kDNA should be
preferred for the screening of infected dogs.
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Affiliation(s)
- Estela Gallucci Lopes
- Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, SP, Brasil
| | | | - Arlei Marcili
- Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, SP, Brasil
| | - Ricardo Duarte Silva
- Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, SP, Brasil
| | - Lara Borges Keid
- Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo, Pirassununga, SP, Brasil
| | | | - Rodrigo Martins Soares
- Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, SP, Brasil
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13
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Sercundes MK, Valadas SYOB, Keid LB, Oliveira TMFS, Ferreira HL, Vitor RWDA, Gregori F, Soares RM. Molecular phylogeny of Toxoplasmatinae: comparison between inferences based on mitochondrial and apicoplast genetic sequences. ACTA ACUST UNITED AC 2016; 25:82-9. [PMID: 27007245 DOI: 10.1590/s1984-29612016015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Accepted: 02/16/2016] [Indexed: 11/22/2022]
Abstract
Phylogenies within Toxoplasmatinae have been widely investigated with different molecular markers. Here, we studied molecular phylogenies of the Toxoplasmatinae subfamily based on apicoplast and mitochondrial genes. Partial sequences of apicoplast genes coding for caseinolytic protease (clpC) and beta subunit of RNA polymerase (rpoB), and mitochondrial gene coding for cytochrome B (cytB) were analyzed. Laboratory-adapted strains of the closely related parasites Sarcocystis falcatula and Sarcocystis neurona were investigated, along with Neospora caninum, Neospora hughesi, Toxoplasma gondii (strains RH, CTG and PTG), Besnoitia akodoni, Hammondia hammondiand two genetically divergent lineages of Hammondia heydorni. The molecular analysis based on organellar genes did not clearly differentiate between N. caninum and N. hughesi, but the two lineages of H. heydorni were confirmed. Slight differences between the strains of S. falcatula and S. neurona were encountered in all markers. In conclusion, congruent phylogenies were inferred from the three different genes and they might be used for screening undescribed sarcocystid parasites in order to ascertain their phylogenetic relationships with organisms of the family Sarcocystidae. The evolutionary studies based on organelar genes confirm that the genus Hammondia is paraphyletic. The primers used for amplification of clpC and rpoB were able to amplify genetic sequences of organisms of the genus Sarcocystisand organisms of the subfamily Toxoplasmatinae as well.
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Affiliation(s)
| | | | - Lara Borges Keid
- Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo, Pirassununga, SP, Brasil
| | | | - Helena Lage Ferreira
- Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo, Pirassununga, SP, Brasil
| | | | - Fábio Gregori
- Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, SP, Brasil
| | - Rodrigo Martins Soares
- Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, SP, Brasil
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14
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Pereira VF, Benassi JC, Starke-Buzetti WA, Silva DT, Ferreira HL, Keid LB, Soares RM, Ruiz VLDA, Oliveira TMFDS. Detection of canine visceral leishmaniasis by conjunctival swab PCR. Rev Soc Bras Med Trop 2016; 49:104-6. [DOI: 10.1590/0037-8682-0191-2015] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2015] [Accepted: 09/03/2015] [Indexed: 11/22/2022] Open
Affiliation(s)
| | | | | | | | | | - Lara Borges Keid
- Universidade de São Paulo, Brazil; Universidade de São Paulo, Brazil
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15
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Mascolli R, Soto FRM, Bernardi F, Ito FH, Pinheiro SR, Guilloux AGA, Azevedo SSD, Fernandes ARDF, Keid LB, Morais ZMD, Souza GDO, Vasconcellos SA. Prevalência e fatores de risco para a leptospirose e brucelose na população canina da Estância Turística de Ibiúna, São Paulo, Brasil. Arq Inst Biol 2016. [DOI: 10.1590/1808-1657000842014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
RESUMO: O objetivo do trabalho foi determinar a prevalência de leptospirose e brucelose por Brucella canis e determinar os fatores de risco associados com a positividade em cães da Estância Turística de Ibiúna, estado de São Paulo, Brasil. Foram examinados 570 animais distribuídos em 4 regiões nos 48 bairros do município, no período de setembro de 2007 a março de 2008. O diagnóstico sorológico da leptospirose foi efetuado com o teste de soroaglutinação microscópica (SAM), e para o diagnóstico de brucelose foi realizado hemocultivo. Dos 570 animais examinados, 187 (32,8%; IC95% 28,9 - 36,8) foram soropositivos para leptospirose, com predomínio de reações para os sorovares Pyrogenes, Autumnalis e Canicola, e 6 (1,05%; IC95% 0,4 - 2,2) foram positivos para brucelose. A variável atividade sexual (OR = 1,73) foi identificada como fator de risco associado à positividade para leptospirose, e o manejo do tipo solto foi considerado fator de risco tanto para leptospirose (OR = 1,96) quanto para brucelose (OR = 10,85). Conclui-se que a leptospirose e a brucelose estão presentes em cães da Estância Turística de Ibiúna, São Paulo, e que a atividade sexual e o acesso irrestrito à rua são condições associadas com a prevalência das infecções.
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Keid LB, Diniz JA, Oliveira TMFS, Ferreira HL, Soares RM. Evaluation of an Immunochromatographic Test to the Diagnosis of Canine Brucellosis Caused by Brucella canis. Reprod Domest Anim 2015; 50:939-44. [PMID: 26489371 DOI: 10.1111/rda.12612] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2015] [Accepted: 08/20/2015] [Indexed: 11/28/2022]
Abstract
This study evaluated the performance of an immunochromatographic test (ICT) for the diagnosis of canine brucellosis caused by Brucella canis, comparing its results with that of the rapid slide agglutination test with and without the use of 2-mercaptoethanol and the agar gel immunodiffusion test (AGID). The microbiological culture, PCR and clinical examination were used as reference. According to the results obtained in clinical examination, blood culture, culture of semen and vaginal swab and PCR in blood, semen and vaginal swab, a total of 102 dogs were divided into three groups: B. canis-infected dogs (Group 1), B. canis-non-infected dogs (Group 2) and dogs with suspected brucellosis (Group 3). The diagnostic sensitivity of RSAT, 2ME-RSAT, AGID and ICT in Group 1 was, respectively, 75%, 37.5%, 27.8% and 89.58%. The diagnostic specificity of RSAT, 2ME-RSAT, AGID and ICT in Group 2 was, respectively, 91%, 100%, 100%, and 100%. In dogs with suspected brucellosis, 9.67% were RSAT positive, none was positive by 2ME-RSAT, 3.22% were AGID positive and 6.45% were ICT positive. The main drawback concerning canine brucellosis diagnosis is the lack of a highly sensitive serological assay to be used as a screening test to the rapid identification of infected animals. The ICT showed a high diagnostic specificity and a diagnostic sensitivity value greater than that observed in the RSAT, 2ME-RSAT and AGID. However, 10.41% of infected dogs had negative results by ICT. These dogs were positive by microbiological culture and/or PCR, indicating active infection and consequently a higher potential of spreading Brucella. Although rapid and simple to perform, the ICT lacked sensitivity to be used as a screening test.
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Affiliation(s)
- L B Keid
- Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo, Pirassununga, Brazil
| | - J A Diniz
- Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo, Pirassununga, Brazil
| | - T M F S Oliveira
- Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo, Pirassununga, Brazil
| | - H L Ferreira
- Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo, Pirassununga, Brazil
| | - R M Soares
- Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, Pirassununga, Brazil
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Aguiar JM, Silva SOD, Santos VAD, Rossa GAR, Taniwaki SA, Gregori F, Keid LB, Soares RM. Multilocus amplification of genomic DNA from single cysts of Giardia duodenalis separated using micromanipulation technique. Exp Parasitol 2015; 157:84-7. [DOI: 10.1016/j.exppara.2015.07.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2015] [Revised: 06/20/2015] [Accepted: 07/08/2015] [Indexed: 11/24/2022]
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Martini MC, Gameiro J, Cardoso TC, Caserta LC, Gualberto ACM, Keid LB, Oliveira TMFDS, dos Santos MMAB, Arns CW, Ferreira HL. Experimental infection of inbred BALB/c and A/J mice with Massachusetts and Brazilian strains of infectious bronchitis virus (IBV). Arch Virol 2015; 160:1785-90. [PMID: 25951972 PMCID: PMC7087133 DOI: 10.1007/s00705-015-2443-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2015] [Accepted: 04/27/2015] [Indexed: 11/25/2022]
Abstract
The ability of avian coronaviruses to replicate in mice was investigated to investigate interspecies transmission. Two inbred mouse strains (BALB/c and A/J) with different genetic backgrounds were inoculated with the avian coronavirus strains Mass and BR-I and monitored for at least 10 days. Analysis of viral RNA, histopathological examinations, immunohistochemistry and serology were performed. After virus inoculation, neither clinical signs nor evident gross lesions were observed. Viral RNA, histopathological changes, and viral nucleoprotein were observed in the lung, trachea and sinus of all inoculated mice. Our study demonstrates the importance of elucidating the epidemiology of coronaviruses, including in rodents that are pests in poultry production.
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Affiliation(s)
- Matheus C. Martini
- Laboratory of Animal Virology, Institute of Biology, University of Campinas-UNICAMP, Campinas, 13083970 Brazil
| | - Jacy Gameiro
- ICB-Universidade Federal de Juiz de Fora, Rua José Lourenço Kelmer, s/n-Campus Universitário, Juiz de Fora, MG 36036-330 Brazil
| | - Tereza Cristina Cardoso
- UNESP-Univ Estadual Paulista, College of Veterinary Medicine, Araçatuba, SP 16050-680 Brazil
| | - Leonardo C. Caserta
- Laboratory of Animal Virology, Institute of Biology, University of Campinas-UNICAMP, Campinas, 13083970 Brazil
| | - Ana Carolina M. Gualberto
- ICB-Universidade Federal de Juiz de Fora, Rua José Lourenço Kelmer, s/n-Campus Universitário, Juiz de Fora, MG 36036-330 Brazil
| | - Lara Borges Keid
- FZEA-USP, Av. Duque de Caxias Norte, 225, Pirassununga, SP CEP 13635-900 Brazil
| | | | - Marcia M. A. B. dos Santos
- ICB-Universidade Federal de Juiz de Fora, Rua José Lourenço Kelmer, s/n-Campus Universitário, Juiz de Fora, MG 36036-330 Brazil
| | - Clarice W. Arns
- Laboratory of Animal Virology, Institute of Biology, University of Campinas-UNICAMP, Campinas, 13083970 Brazil
| | - Helena L. Ferreira
- FZEA-USP, Av. Duque de Caxias Norte, 225, Pirassununga, SP CEP 13635-900 Brazil
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Chiebao DP, Valadas SYOB, Minervino AHH, Castro V, Romaldini AHCN, Calhau AS, De Souza RAB, Gennari SM, Keid LB, Soares RM. Variables Associated with Infections of Cattle by Brucella abortus., Leptospira spp. and Neospora spp. in Amazon Region in Brazil. Transbound Emerg Dis 2013; 62:e30-6. [PMID: 26302373 DOI: 10.1111/tbed.12201] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2013] [Indexed: 11/28/2022]
Abstract
The frequency of Neospora spp., Leptospira spp. and Brucella abortus infections in adult cattle was determined in herds of the State of Pará, Brazil, which is an important region for cattle production located in the Amazon region. A total of 3466 adult female cattle from 176 herds were tested, leading to a frequency of seropositive animals of 14.7%, 3.7% and 65.5% and a herd positivity of 87.4%, 41.3% and 98.8% for infections caused by Neospora spp., B. abortus and Leptospira spp., respectively. The five most frequently diagnosed serologic responses to Leptospira spp. were those against serovars hardjo, wolfii, grippotyphosa, hebdomadis and shermani. The following associations were found: practice of artificial insemination, large farm size, large herd size, large number of dogs and high number of total abortions per year with the presence of antibodies against serovar hardjo; positive results to serovar grippotyphosa with the presence of dogs; inappropriate disposal of aborted foetuses with positivity to serovar hebdomadis. Serovar grippotyphosa was also associated with number of episodes of abortions. Neospora spp. positive herds were associated with episodes of abortion and B. abortus infection with the disposal of dead animals and aborted foetuses on pastures and with the use of artificial insemination. In conclusion, the high frequency of brucellosis, leptospirosis and neosporosis in the region may be a consequence of social, natural and raising conditions as: (i) climate conditions that favour the survival and spread of pathogens in the environment; (ii) farms located in regions bordering forest areas; (iii) farms in areas of difficult access to the veterinary service; (iv) extensive beef herds raised at pastures with different age and productive groups inter-mingled; and (v) minimal concerns regarding hygiene practices and disease prevention measures.
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Affiliation(s)
- D P Chiebao
- Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, SP, Brasil
| | - S Y O B Valadas
- Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, SP, Brasil
| | - A H H Minervino
- Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, SP, Brasil
| | - V Castro
- Agência Paulista de Tecnologia dos Agronegócios, Instituto Biológico, São Paulo, SP, Brasil
| | - A H C N Romaldini
- Agência Paulista de Tecnologia dos Agronegócios, Instituto Biológico, São Paulo, SP, Brasil
| | - A S Calhau
- Empresa Brasileira de Extensão Rural do Pará, Marituba, PA, Brasil
| | | | - S M Gennari
- Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, SP, Brasil
| | - L B Keid
- Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo, Pirassununga, SP, Brasil
| | - R M Soares
- Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, SP, Brasil
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Vejarano MP, Matrone M, Keid LB, Rocha VCM, Ikuta CY, Rodriguez CAR, Salgado VR, Ferreira F, Dias RA, Telles EO, Ferreira Neto JS. Evaluation of four DNA extraction protocols for Brucella abortus detection by PCR in tissues from experimentally infected cows with the 2308 strain. Vector Borne Zoonotic Dis 2013; 13:237-42. [PMID: 23421881 DOI: 10.1089/vbz.2011.0923] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
This study compared 4 protocols for DNA extraction from homogenates of 6 different organs of cows infected with the Brucella abortus 2308 strain. The extraction protocols compared were as follows: GT (guanidine isothiocyanate lysis), Boom (GT lysis with the carrying suspension diatomaceous earth), PK (proteinase K lysis), and Santos (lysis by boiling and freezing with liquid nitrogen). Positive and negative gold standard reference groups were generated by classical bacteriological methods. All samples were processed with the 4 DNA extraction protocols and amplified with the B4 and B5 primers. The number of positive samples in the placental cotyledons was higher than that in the other organs. The cumulated results showed that the Santos protocol was more sensitive than the Boom (p=0.003) and GT (p=0.0506) methods and was similar to the PK method (p=0.2969). All of the DNA extraction protocols resulted in false-negative results for PCR. In conclusion, despite the disadvantages of classical bacteriological methods, the best approach for direct diagnosis of B. abortus in organs of infected cows includes the isolation associated with PCR of DNA extracted from the cotyledon by the Santos or PK methods.
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Affiliation(s)
- M P Vejarano
- Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, Brazil.
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Monteiro RM, Keid LB, Richtzenhain LJ, Valadas SY, Muller G, Soares RM. Extensively variable surface antigens of Sarcocystis spp. infecting Brazilian marsupials in the genus Didelphis occur in myriad allelic combinations, suggesting sexual recombination has aided their diversification. Vet Parasitol 2013; 196:64-70. [PMID: 23433642 DOI: 10.1016/j.vetpar.2013.01.019] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2011] [Revised: 01/23/2013] [Accepted: 01/24/2013] [Indexed: 11/26/2022]
Abstract
Sarcocystis neurona and Sarcocystis falcatula are very similar species of Apicomplexan protozoa that use marsupials of the genus Didelphis as definitive hosts. These mammals can serve as definitive hosts not only for these two parasites, but for other Sarcocystis such as Sarcocystis speeri and Sarcocystis lindsayi. Sarcocystis shed by opossums (with the exception of S. neurona) can cause disease in a great variety of birds, being commonly associated with acute pulmonary sarcocystosis in zoos. S. neurona is the most commonly associated parasite with the equine protozoal myeloencephalitis in horses. Herein we assessed the variability of Sarcocystis spp. isolated from opossums of the state of Rio Grande do Sul, Brazil, by sequencing fragments of genes coding for glycosylphosphatidylinositol-anchored surface antigens (termed surface antigen or SAG), SAG2, SAG3 and SAG4. Two genetic groups were identified, one of them related to S. falcatula and the other related to S. neurona. Various allelic combinations of SAG2, SAG3 and SAG4 occur among S. falcatula related isolates and strong evidences suggest that such isolates may exchange high divergent alleles in possible sexual recombination processes. Regarding the group S. neurona-like (isolates G37 and G38), none of the individuals in this group share alleles with individuals of the other group. Comparing G37 and G38 strains and North American strains of S. neurona, four polymorphisms were identified at SAG-3, five at SAG-2 and three at SAG-4. Gene sequences of locus SAG-3 from isolates G37 and G38 differed from the other sequences by an insertion 81bp long. This insertion contains several dinucleotide repeats of AT, resembling a microsatellite locus and has already been detected in SAG3 sequences of S. neurona from North America. When aligned against North American strains of S. neurona, G37 and G38 isolates have a deletion of 8 nucleotides within this intron which indicate that S. neurona strains of South America are divergent from that of North America. From the results obtained so far, we have shown extensive variability in surface antigens coding sequences among Sarcocystis eliminated by mammals of the genus Didelphis spp. In addition, such divergent alleles may be exchanged in possible sexual recombination processes between different isolates of S. falcatula related isolate. The evolutionary relationships within S. falcatula related isolates will be best clarified after markers less subjected to selection pressures are analyzed in conjunction with surface antigen genes. These results may have a striking impact on the knowledge of the Sarcocystis species that infect opossums in Brazil and also in the epidemiology of the infections caused by these protozoans.
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Affiliation(s)
- R M Monteiro
- Department of Preventive Veterinary Medicine and Animal Health, University of Sao Paulo, Sao Paulo, Sao Paulo, Brazil
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23
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Rocha VCF, de Figueiredo SC, Rosales CAR, de Hildebrand e Grisi Filho JH, Keid LB, Soares RM, Ferreira Neto JS. Molecular discrimination of Mycobacterium bovis in São Paulo, Brazil. Vector Borne Zoonotic Dis 2012. [PMID: 23199273 DOI: 10.1089/vbz.2012.1035] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Mycobacterium bovis, a member of the Mycobacterium tuberculosis complex, is the most common agent of cattle tuberculosis, a zoonosis that causes losses in meat and milk production in several countries. In order to support epidemiological studies aimed at controlling the disease, several methods for molecular discrimination of M. bovis isolates have recently been developed. The most frequently used are spacer oligonucleotide typing (spoligotyping), mycobacterial interspersed repetitive units (MIRU), and exact tandem repeat (ETR), but they all have different discriminatory power. In the present study, allelic diversity was calculated for each MIRU and ETR locus, and the Hunter-Gaston discriminatory index (HGI) was calculated for spoligotyping, 10 MIRUs, and 3 ETRs, in 116 isolates of M. bovis obtained from cattle. The analysis of allelic diversity indicated that MIRUs 16, 26, and 27, and ETRs A, B, and C, showed the greatest diversity between the assayed loci. The HGIs for each of the techniques were: spoligotyping=0.738381; MIRU=0.829835; and ETR=0.825337. The associations of the methods' improved discriminatory power were: spoligotyping+MIRU=0.930585; spoligotyping+ETR=0.931034; and MIRU+ETR=0.953373. The greatest discriminatory power was obtained when the three techniques were associated (HGI=0.98051). Considering the analyses of the present study, spoligotyping should be the first method to be used because it differentiates M. bovis from the other members of the Mycobacterium tuberculosis complex. As the associations of MIRU and ETR with spoligotyping resulted in nearly identical HGIs, ETR seems to be the best choice after spoligotyping, because it is faster and more economical than MIRU. Finally, MIRU should be the last method used. In spite of this finding, the choice of the method used should be based on the discriminatory power necessary for the objective at hand.
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Soares RM, Lopes EG, Keid LB, Sercundes MK, Martins J, Richtzenhain LJ. Identification of Hammondia heydorni oocysts by a heminested-PCR (hnPCR-AP10) based on the H. heydorni RAPD fragment AP10. Vet Parasitol 2011; 175:168-72. [DOI: 10.1016/j.vetpar.2010.09.022] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2009] [Revised: 09/15/2010] [Accepted: 09/20/2010] [Indexed: 11/26/2022]
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Alves CJ, Figueiredo SMD, Azevedo SSD, Clementino IJ, Keid LB, Vasconcellos SA, Batista CDSA, Rocha VCM, Higino SS. Detection of Brucella ovis in ovine from Paraíba State, in the Northeast region of Brazil. Braz J Microbiol 2010. [DOI: 10.1590/s1517-83822010000200016] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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26
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Alves CJ, de Figueiredo SM, de Azevedo SS, Clementino IJ, Keid LB, Vasconcellos SA, de Sousa Américo Batista C, Rocha VCM, Higino SS. Detection of Brucella ovis in ovine from Paraíba State, in the Northeast region of Brazil. Braz J Microbiol 2010; 41:365-7. [PMID: 24031505 PMCID: PMC3768702 DOI: 10.1590/s1517-838220100002000016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2008] [Revised: 10/31/2008] [Accepted: 11/07/2009] [Indexed: 11/21/2022] Open
Abstract
To determine the presence of Brucella ovis in ovine from Paraíba State, in the Northeast region of Brazil, 80 animals slaughtered in the public slaughterhouse of Patos city were used. Before slaughter, blood samples were collected by jugular venopuncture from each animal, and after slaughter, testicles, epidydimus and uterus were aseptically collected. For the serological diagnosis of B. ovis and B. abortus infections, the agar gel immunodiffusion (AGID) and Rose Bengal (RBT) tests were carried out, respectively. In addition, microbiological culture and polymerase chain reaction (PCR) were performed on testicle, epidydimus and uterus samples. Six animals (7.5%) tested positive for the presence of B. ovis antibodies and all animals tested negative for the presence of B. abortus antibodies. One AGID-positive animal tested positive at uterine swab culture. PCR was able to amplify DNA of Brucella spp. from the pool of testicle, epidydimus and uterus samples from AGID-positive animals. This is the first report of isolation and detection of B. ovis DNA by PCR in ovine from the Northeast region of Brazil.
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Affiliation(s)
- Clebert José Alves
- Unidade Acadêmica de Medicina Veterinária, Centro de Saúde e Tecnologia Rural, Universidade Federal de Campina Grande , Patos, PB , Brasil
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Matrone M, Keid LB, Rocha VCM, Vejarano MP, Ikuta CY, Rodriguez CAR, Ferreira F, Dias RA, Ferreira Neto JS. Evaluation of DNA extraction protocols for Brucella abortus pcr detection in aborted fetuses or calves born from cows experimentally infected with strain 2308. Braz J Microbiol 2009; 40:480-9. [PMID: 24031391 PMCID: PMC3768545 DOI: 10.1590/s1517-838220090003000010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2008] [Revised: 02/16/2009] [Accepted: 05/04/2009] [Indexed: 11/22/2022] Open
Abstract
The objective of the present study was to improve the detection of B. abortus by PCR in organs of aborted fetuses from infected cows, an important mechanism to find infected herds on the eradication phase of the program. So, different DNA extraction protocols were compared, focusing the PCR detection of B. abortus in clinical samples collected from aborted fetuses or calves born from cows challenged with the 2308 B. abortus strain. Therefore, two gold standard groups were built based on classical bacteriology, formed from: 32 lungs (17 positives), 26 spleens (11 positives), 23 livers (8 positives) and 22 bronchial lymph nodes (7 positives). All samples were submitted to three DNA extraction protocols, followed by the same amplification process with the primers B4 and B5. From the accumulated results for organ, the proportion of positives for the lungs was higher than the livers (p=0.04) or bronchial lymph nodes (p=0.004) and equal to the spleens (p=0.18). From the accumulated results for DNA extraction protocol, the proportion of positives for the Boom protocol was bigger than the PK (p< 0.0001) and GT (p=0.0004). There was no difference between the PK and GT protocols (p=0.5). Some positive samples from the classical bacteriology were negative to the PCR and vice-versa. Therefore, the best strategy for B. abortus detection in the organs of aborted fetuses or calves born from infected cows is the use, in parallel, of isolation by classical bacteriology and the PCR, with the DNA extraction performed by the Boom protocol.
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Affiliation(s)
- M Matrone
- Departamento de Medicina Veteriná ria Preventiva e Saúde Animal, Faculdade de Medicina Veteriná ria e Zootecnia, Universidade de São Paulo , São Paulo, SP , Brasil
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Monteiro RM, Richtzenhain LJ, Pena HFJ, Souza SLP, Funada MR, Gennari SM, Dubey JP, Sreekumar C, Keid LB, Soares RM. Molecular phylogenetic analysis inHammondia-like organisms based on partial Hsp70 coding sequences. Parasitology 2007; 134:1195-203. [PMID: 17462122 DOI: 10.1017/s0031182007002612] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
SUMMARYThe 70 kDa heat-shock protein (Hsp70) sequences are considered one of the most conserved proteins in all domains of life from Archaea to eukaryotes.Hammondia heydorni,H. hammondi,Toxoplasma gondii,Neospora hughesiandN. caninum(Hammondia-like organisms) are closely related tissue cyst-forming coccidians that belong to the subfamily Toxoplasmatinae. The phylogenetic reconstruction using cytoplasmic Hsp70 coding genes ofHammondia-like organisms revealed the genetic sequences ofT. gondii,Neosporaspp. andH. heydornito possess similar levels of evolutionary distance. In addition, at least 2 distinct genetic groups could be recognized among theH. heydorniisolates. Such results are in agreement with those obtained with internal transcribed spacer-1 rDNA (ITS-1) sequences. In order to compare the nucleotide diversity among different taxonomic levels within Apicomplexa, Hsp70 coding sequences of the following apicomplexan organisms were included in this study:Cryptosporidium,Theileria,Babesia,PlasmodiumandCyclospora. Such analysis revealed theHammondia-like organism to be the lowest divergent group when compared to other groups within the phylum Apicomplexa. In conclusion, the Hsp70 coding sequences proved to be a valuable genetic marker for phylogenetic reconstruction and may constitute a good candidate to be used with other genes for species phylogeny within this group of organisms.
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Affiliation(s)
- R M Monteiro
- Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, Av. Prof. Dr. Orlando Marques de Paiva, 87, CEP 05508-900, São Paulo, SP, Brazil
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Keid LB, Soares RM, Vasconcellos SA, Chiebao DP, Megid J, Salgado VR, Richtzenhain LJ. A polymerase chain reaction for the detection of Brucella canis in semen of naturally infected dogs. Theriogenology 2007; 67:1203-10. [PMID: 17343907 DOI: 10.1016/j.theriogenology.2007.01.003] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2006] [Accepted: 01/07/2007] [Indexed: 11/19/2022]
Abstract
The objective was to evaluate a PCR assay for the detection of Brucella canis in canine semen, comparing its performance with that of bacterial isolation, serological tests and PCR assay of blood. Fifty-two male dogs were examined clinically to detect reproductive abnormalities and their serum was tested by the rapid slide agglutination test, with and without 2-mercaptoethanol (2ME-RSAT and RSAT, respectively). In addition, microbiological culture and PCR assays were performed on blood and semen samples. The findings of the semen PCR were compared (Kappa coefficient and McNemar test) to those of blood PCR, culture of blood and semen, RSAT, and 2ME-RSAT. Nucleic acid extracts from semen collected from dogs not infected with B. canis were spiked with decreasing amounts of B. canis RM6/66 DNA and the resulting samples subjected to PCR. In addition, semen samples of non-infected dogs were spiked with decreasing amounts of B. canis CFU and the resulting suspensions were used for DNA extraction and amplification. Of the 52 dogs that were examined, the following tests were positive: RSAT, 16 (30.7%); 2ME-RSAT, 5 (9.6%); blood culture, 14 (26.9%); semen culture, 11 (21.1%); blood PCR, 18 (34.6%); semen PCR, 18 (34.6%). The PCR assay detected as few as 3.8 fg of B. canis DNA experimentally diluted in 444.9 ng of canine DNA (extracted from semen samples of non-infected dogs). In addition, the PCR assay amplified B. canis genetic sequences from semen samples containing as little as 1.0 x 10(0) cfu/mL. We concluded that PCR assay of semen was a good candidate as a confirmatory test for the diagnosis of brucellosis in dogs; its diagnostic performance was similar to blood culture or blood PCR. Furthermore, the PCR assay of semen was more sensitive than the 2ME-RSAT or semen culture. Examination of semen by PCR should be included for diagnosis of brucellosis prior to natural mating or AI; in that regard, some dogs that were negative on serological and microbiological examinations as well as blood PCR were positive on PCR of semen.
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Affiliation(s)
- L B Keid
- Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia da Universidade de São Paulo, São Paulo, SP, Brazil
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Miyashiro S, Scarcelli E, Piatti RM, Campos FR, Vialta A, Keid LB, Dias RA, Genovez ME. Detection of Brucella abortus DNA in illegal cheese from São Paulo and Minas Gerais and differentiation of B19 vaccinal strain by means of the polymerase chain reaction (PCR). Braz J Microbiol 2007. [DOI: 10.1590/s1517-83822007000100005] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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31
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Keid LB, Soares RM, Vieira NR, Megid J, Salgado VR, Vasconcellos SA, da Costa M, Gregori F, Richtzenhain LJ. Diagnosis of canine brucellosis: comparison between serological and microbiological tests and a PCR based on primers to 16S-23S rDNA interspacer. Vet Res Commun 2007; 31:951-65. [PMID: 17308888 DOI: 10.1007/s11259-006-0109-6] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/28/2006] [Indexed: 11/28/2022]
Abstract
A pair of primers directed to 16S-23S rDNA interspacer (ITS) was designed directed to Brucella genetic sequences in order to develop a polymerase chain reaction (PCR) putatively capable of amplifying DNA from any Brucella species. Nucleic acid extracts from whole-blood from naive dogs were spiked with decreasing amounts of Brucella canis RM6/66 DNA and the resulting solutions were tested by PCR. In addition, the ability of PCR to amplify Brucella spp. genetic sequences from naturally infected dogs was evaluated using 210 whole-blood samples of dogs from 19 kennels. The whole-blood samples collected were subjected to blood culture and PCR. Serodiagnosis was performed using the rapid slide agglutination test with and without 2-mercaptoethanol. The DNA from whole blood was extracted using proteinase-K, sodium dodecyl sulphate and cetyl trimethyl ammonium bromide followed by phenol-chloroform purification. The PCR was capable of detecting as little as 3.8 fg of Brucella DNA mixed with 450 ng of host DNA. Theoretically, 3.8 fg of Brucella DNA represents the total genomic mass of fewer than two bacterial cells. The PCR diagnostic sensitivity and specificity were 100%. From the results observed in the present study, we conclude that PCR could be used as confirmatory test for diagnosis of B. canis infection.
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Affiliation(s)
- L B Keid
- Department of Preventive Veterinary Medicine and Animal Health, School of Veterinary Medicine, University of São Paulo, São Paulo, SP, Brazil
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Azevedo SSD, Vasconcellos SA, Keid LB, Grasso LMPDS, Pinheiro SR, Mascolli R, Alves CJ. Comparação de três testes sorológicos aplicados ao diagnóstico da infecção de caninos por Brucella canis. Braz J Vet Res Anim Sci 2004. [DOI: 10.1590/s1413-95962004000200005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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