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Ulsenheimer BC, Tonin AA, von Laer AE, Dos Santos HF, Sangioni LA, Fighera R, Dos Santos MY, Brayer DI, de Avila Botton S. Leptospira borgptersenii and Leptospira interrogans identified in wild mammals in Rio Grande do Sul, Brazil. Braz J Microbiol 2024:10.1007/s42770-024-01348-4. [PMID: 38691328 DOI: 10.1007/s42770-024-01348-4] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Accepted: 04/15/2024] [Indexed: 05/03/2024] Open
Abstract
Leptospira spp. are bacteria responsible for leptospirosis, a zoonotic disease with considerable impacts on the economy, animal health, and public health. This disease has a global distribution and is particularly prevalent in Brazil. Both rural and urban environments are habitats for Leptospira spp., which are primarily transmitted through contact with the urine of infected animals. Consequently, domestic and wild species can harbor these prokaryotes and serve as infection sources for other hosts. In the context of wild animals, there is a dearth of molecular studies elucidating the roles of various animal and bacterial species in the epidemiology of leptospirosis. Therefore, this study aimed to evaluate the presence of Leptospira spp. DNA in different species of free-living and captive wild animals and to assess the phylogenetic relationships of the identified microorganisms in Rio Grande do Sul, Brazil. The samples were evaluated for the presence of the gene lipL32 by polymerase chain reaction (PCR) and sequencing of the amplified fragment after which phylogenetic analyzes were carried out. DNA from Leptospira spp. was extracted from kidney tissue from wild animals (Mammalia class). Pathogenic Leptospira spp. DNA was detected in 9.6% (11/114) of the samples, originating from nine species of wild animals, including the white-eared opossum (Didelphis albiventris), skunk (Conepatus chinga), geoffroy's cat (Leopardus geoffroyi), margay (Leopardus wiedii), pampas fox (Lycalopex gymnocercus), capybara (Hydrochoerus hydrochaeris), common marmoset (Callithrix jacchus), neotropical river otter (Lontra longicaudis), and european hare (Lepus europaeus). Phylogenetic analysis revealed the presence of Leptospira borgpetersenii and Leptospira interrogans in these animals. This research is the first study contributing to the epidemiology of leptospirosis by identifying L. borgpetersenii and L. interrogans in free-living and captive wild animals in Rio Grande do Sul, Brazil, potentially acting as bacterial reservoirs. Additionally, our findings can inform sanitary measures for controlling and preventing the disease, thereby safeguarding public health.
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Affiliation(s)
- Bruna Carolina Ulsenheimer
- Departamento de Medicina Veterinária Preventiva (DMVP), Programa de Pós-graduação em Medicina Veterinária (PPGMV), Universidade Federal de Santa Maria (UFSM), Centro de Ciências Rurais (CCR), Santa Maria, Rio Grande do Sul, CEP 97105-900, Brasil
- Departamento de Microbiologia e Parasitologia (DMIP), Laboratório de Diagnóstico e Pesquisa em Leptospirose (LabLepto), Universidade Federal de Santa Maria (UFSM), Centro de Ciências da Saúde (CCS), Santa Maria, CEP 97105-900, Brasil
| | - Alexandre Alberto Tonin
- Departamento de Microbiologia e Parasitologia (DMIP), Laboratório de Diagnóstico e Pesquisa em Leptospirose (LabLepto), Universidade Federal de Santa Maria (UFSM), Centro de Ciências da Saúde (CCS), Santa Maria, CEP 97105-900, Brasil
- Instituto Federal de Educação, Ciência e Tecnologia do Amazonas (IFAM), Campus Manaus, Manaus, Amazonas, CEP 69083-000, Brasil
| | - Ana Eucares von Laer
- Departamento de Microbiologia e Parasitologia (DMIP), Laboratório de Diagnóstico e Pesquisa em Leptospirose (LabLepto), Universidade Federal de Santa Maria (UFSM), Centro de Ciências da Saúde (CCS), Santa Maria, CEP 97105-900, Brasil
| | - Helton Fernandes Dos Santos
- Departamento de Medicina Veterinária Preventiva (DMVP), Programa de Pós-graduação em Medicina Veterinária (PPGMV), Universidade Federal de Santa Maria (UFSM), Centro de Ciências Rurais (CCR), Santa Maria, Rio Grande do Sul, CEP 97105-900, Brasil
| | - Luís Antônio Sangioni
- Departamento de Medicina Veterinária Preventiva (DMVP), Programa de Pós-graduação em Medicina Veterinária (PPGMV), Universidade Federal de Santa Maria (UFSM), Centro de Ciências Rurais (CCR), Santa Maria, Rio Grande do Sul, CEP 97105-900, Brasil
| | - Rafael Fighera
- Departamento de Patologia. Laboratório de Patologia Veterinária, Universidade Federal de Santa Maria (UFSM), Centro de Ciências da Saúde (CCS), Santa Maria, Rio Grande do Sul, CEP 97105-900, Brasil
| | - Matheus Yuri Dos Santos
- Departamento de Patologia. Laboratório de Patologia Veterinária, Universidade Federal de Santa Maria (UFSM), Centro de Ciências da Saúde (CCS), Santa Maria, Rio Grande do Sul, CEP 97105-900, Brasil
| | - Daniela Isabel Brayer
- Instituto de Biologia (IB), Departamento de Microbiologia e Parasitologia (DMIP), Universidade Federal de Pelotas (UFPel), Capão do Leão, Rio Grande do Sul, CEP 96010-900, Brasil
| | - Sônia de Avila Botton
- Departamento de Medicina Veterinária Preventiva (DMVP), Programa de Pós-graduação em Medicina Veterinária (PPGMV), Universidade Federal de Santa Maria (UFSM), Centro de Ciências Rurais (CCR), Santa Maria, Rio Grande do Sul, CEP 97105-900, Brasil.
- Departamento de Microbiologia e Parasitologia (DMIP), Laboratório de Diagnóstico e Pesquisa em Leptospirose (LabLepto), Universidade Federal de Santa Maria (UFSM), Centro de Ciências da Saúde (CCS), Santa Maria, CEP 97105-900, Brasil.
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da Silva D, Ratzlaff FR, Osmari V, Fernandes FD, Lourenço EC, Famadas KM, Samoel GVA, Campos A, Pacheco SM, Dos Santos HF, Vogel FSF, de Avila Botton S, Sangioni LA. Detection of ectoparasites and investigation of infection by Rickettsia spp. and Trypanosoma spp. in bats from Rio Grande do Sul, Brazil. Parasitol Res 2024; 123:177. [PMID: 38573559 DOI: 10.1007/s00436-024-08198-x] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Accepted: 03/27/2024] [Indexed: 04/05/2024]
Abstract
This study aimed to investigate the presence of ectoparasites and the occurrence of natural infection by Rickettsia spp. and Trypanosoma spp. in bats from Rio Grande do Sul (RS), Brazil. The evaluated animals were obtained from the Instituto de Pesquisas Veterinárias Desidério Finamor, sent by the Centro Estadual de Vigilância Sanitária, to carry out rabies diagnostic tests, during the period from 2016 to 2021. The bats came from 34 municipalities in RS. Of the 109 animals surveyed, 35.8% (39/109) had 385 ectoparasites, with an average of 9.9 parasites per animal. Of these bats, all had insectivorous feeding habits, with 35.9% (14/39) females and 64.1% (25/39) males. The co-parasitism of Chirnyssoides sp., Ewingana inaequalis, and Chiroptonyssus robustipes on Molossus currentium (Mammalia, Chiroptera) was recorded for the first time. All bats surveyed were negative for infection by the protozoan and bacteria. Thus, the expansion of the occurrence of these ectoparasites in insectivorous bats in RS was observed. Furthermore, this study corresponds to the first recorded interspecific associations for the species.
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Affiliation(s)
- Daniele da Silva
- Laboratório de Saúde Única (LASUS), Departamento de Medicina Veterinária Preventiva, Centro de Ciências Rurais (CCR), Universidade Federal de Santa Maria (UFSM), Av. Roraima, nº 1000, Prédio 44, Bairro Camobi, Santa Maria, Rio Grande Do Sul, CEP 97105-900, Brasil
| | - Fabiana Raquel Ratzlaff
- Laboratório de Saúde Única (LASUS), Departamento de Medicina Veterinária Preventiva, Centro de Ciências Rurais (CCR), Universidade Federal de Santa Maria (UFSM), Av. Roraima, nº 1000, Prédio 44, Bairro Camobi, Santa Maria, Rio Grande Do Sul, CEP 97105-900, Brasil
| | - Vanessa Osmari
- Laboratório de Saúde Única (LASUS), Departamento de Medicina Veterinária Preventiva, Centro de Ciências Rurais (CCR), Universidade Federal de Santa Maria (UFSM), Av. Roraima, nº 1000, Prédio 44, Bairro Camobi, Santa Maria, Rio Grande Do Sul, CEP 97105-900, Brasil
| | - Fagner D'ambroso Fernandes
- Laboratório de Saúde Única (LASUS), Departamento de Medicina Veterinária Preventiva, Centro de Ciências Rurais (CCR), Universidade Federal de Santa Maria (UFSM), Av. Roraima, nº 1000, Prédio 44, Bairro Camobi, Santa Maria, Rio Grande Do Sul, CEP 97105-900, Brasil.
- Centro Universitário Ritter Dos Reis (UniRitter), Av. Manoel Elias, nº 2001, Bairro Passo das Pedras, Porto Alegre, Rio Grande Do Sul, CEP 91240-261, Brasil.
| | - Elizabete Captivo Lourenço
- Laboratório de Ecologia de Mamíferos (LEMA), Departamento de Ecologia, Universidade Do Estado Do Rio de Janeiro (UERJ), Rua Dolores Duran, Bairro Maracanã, Rio de Janeiro, RJ, CEP 20990-000, Brasil
| | - Katia Maria Famadas
- Laboratório de Artrópodes Parasitas (LAPAR), Departamento de Parasitologia Animal (DPA), Universidade Federal Rural Do Rio de Janeiro (UFRRJ), Rod. BR 465, Km 7, Seropédica, Rio de Janeiro, CEP 23890-000, Brasil
| | - Gisele Vaz Aguirre Samoel
- Laboratório de Saúde Única (LASUS), Departamento de Medicina Veterinária Preventiva, Centro de Ciências Rurais (CCR), Universidade Federal de Santa Maria (UFSM), Av. Roraima, nº 1000, Prédio 44, Bairro Camobi, Santa Maria, Rio Grande Do Sul, CEP 97105-900, Brasil
| | - Aline Campos
- Centro Estadual de Vigilância Em Saúde (CEVS), Av. Ipiranga, 5400, Porto Alegre, Rio Grande do Sul, CEP 90610-000, Brasil
| | - Susi Missel Pacheco
- Instituto Sauver (ISAUVER)- Organização Não Governamental, Rua Dr. Paulo Franco Dos Réis, N° 40, Bairro Boa Vista, Porto Alegre, Rio Grande do Sul, CEP 90480-090, Brasil
| | - Helton Fernandes Dos Santos
- Laboratório Central de Diagnóstico em Patologia Aviária (LCDPA), Departamento de Medicina Veterinária Preventiva (DMVP), Centro de Ciências Rurais (CCR), Universidade Federal de Santa Maria (UFSM), Av. Roraima, N° 1000, Prédio 44, Bairro Camobi, Santa Maria, Rio Grande do Sul, CEP 97105-900, Brasil
| | - Fernanda Silveira Flores Vogel
- Laboratório de Saúde Única (LASUS), Departamento de Medicina Veterinária Preventiva, Centro de Ciências Rurais (CCR), Universidade Federal de Santa Maria (UFSM), Av. Roraima, nº 1000, Prédio 44, Bairro Camobi, Santa Maria, Rio Grande Do Sul, CEP 97105-900, Brasil
| | - Sônia de Avila Botton
- Laboratório de Saúde Única (LASUS), Departamento de Medicina Veterinária Preventiva, Centro de Ciências Rurais (CCR), Universidade Federal de Santa Maria (UFSM), Av. Roraima, nº 1000, Prédio 44, Bairro Camobi, Santa Maria, Rio Grande Do Sul, CEP 97105-900, Brasil
| | - Luís Antônio Sangioni
- Laboratório de Saúde Única (LASUS), Departamento de Medicina Veterinária Preventiva, Centro de Ciências Rurais (CCR), Universidade Federal de Santa Maria (UFSM), Av. Roraima, nº 1000, Prédio 44, Bairro Camobi, Santa Maria, Rio Grande Do Sul, CEP 97105-900, Brasil
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Samoel GVA, Fernandes FD, Roman IJ, Rodrigues BT, Miletti LC, Bräunig P, Guerra RR, Sangioni LA, Cargnelutti JF, Vogel FSF. Detection of anti-Trypanosoma spp. antibodies in cattle from southern Brazil. Rev Bras Parasitol Vet 2023; 33:e013723. [PMID: 38126573 PMCID: PMC10782508 DOI: 10.1590/s1984-29612024002] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Accepted: 11/09/2023] [Indexed: 12/23/2023]
Abstract
Bovine trypanosomosis, caused by Trypanosoma vivax, is a disease that originated in Africa and currently affects cattle in several South American countries, including almost all Brazilian states. Despite the reports on T. vivax infection in southern Brazil, data on its circulation status is currently unavailable. In this study, we aimed to detect anti-Trypanosoma spp. IgG antibodies in cattle from Rio Grande do Sul and suggest areas with T. vivax transmission risk. A total of 691 serum samples from cattle in the intermediate regions of Rio Grande do Sul were analyzed using indirect immunofluorescence assay (IFA). The overall seroprevalence of anti-Trypanosoma antibodies in cattle was 24.6% (170/691). The detection rate ranged from 0-37.3%, with a high prevalence in the intermediate regions of Ijuí (37.3%), Uruguaiana (30.7%), and Passo Fundo (28.9%). Thus, these regions were suggested as possible bovine trypanosomosis risk areas due to the high seroprevalence. This is the first serological study to determine Trypanosoma spp. infection status in cattle from Rio Grande do Sul, providing data on the epidemiology of trypanosomosis in the state.
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Affiliation(s)
- Gisele Vaz Aguirre Samoel
- Laboratório de Doenças Parasitárias, Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria – UFSM, Santa Maria, RS, Brasil
| | - Fagner D’ambroso Fernandes
- Laboratório de Doenças Parasitárias, Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria – UFSM, Santa Maria, RS, Brasil
- Centro Universitário Ritter dos Reis – UniRitter, Porto Alegre, RS, Brasil
| | - Isac Junior Roman
- Laboratório de Doenças Parasitárias, Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria – UFSM, Santa Maria, RS, Brasil
| | - Bibiana Teixeira Rodrigues
- Laboratório de Doenças Parasitárias, Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria – UFSM, Santa Maria, RS, Brasil
| | | | - Patrícia Bräunig
- Laboratório de Doenças Parasitárias, Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria – UFSM, Santa Maria, RS, Brasil
| | - Renata Rojas Guerra
- Departamento de Estatística, Universidade Federal de Santa Maria – UFSM, Santa Maria, RS, Brasil
| | - Luís Antônio Sangioni
- Laboratório de Doenças Parasitárias, Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria – UFSM, Santa Maria, RS, Brasil
| | - Juliana Felipetto Cargnelutti
- Laboratório de Bacteriologia, Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria – UFSM, Santa Maria, RS, Brasil
| | - Fernanda Silveira Flores Vogel
- Laboratório de Doenças Parasitárias, Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria – UFSM, Santa Maria, RS, Brasil
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Ratzlaff FR, Osmari V, da Silva D, de Paula Vasconcellos JS, Pötter L, Fernandes FD, de Mello Filho JA, de Avila Botton S, Vogel FSF, Sangioni LA. Identification of infection by Leishmania spp. in wild and domestic animals in Brazil: a systematic review with meta-analysis (2001-2021). Parasitol Res 2023; 122:1605-1619. [PMID: 37154922 DOI: 10.1007/s00436-023-07862-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Accepted: 04/28/2023] [Indexed: 05/10/2023]
Abstract
Leishmaniasis is a zoonosis caused by protozoan species of the genus Leishmania. It generates different clinical manifestations in humans and animals, and it infects multiple hosts. Leishmania parasites are transmitted by sandfly vectors. The main objective of this systematic review was to identify the host, or reservoir animal species, of Leishmania spp., with the exception of domestic dogs, that were recorded in Brazil. This review included identification of diagnostic methods, and the species of protozoan circulating in the country. For this purpose, a literature search was conducted across index journals. This study covered the period from 2001 to 2021, and 124 studies were selected. Eleven orders possible hosts were identified, including 229 mammalian species. Perissodactyla had the highest number of infected individuals (30.69%, 925/3014), with the highest occurrence in horses. In Brazil, the most commonly infected species were found to be: horses, domestic cats, rodents, and marsupials. Bats, that were infected by one or more protozoan species, were identified as potential reservoirs of Leishmania spp. Molecular tests were the most commonly used diagnostic methods (94 studies). Many studies have detected Leishmania spp. (n = 1422): Leishmania (Leishmania) infantum (n = 705), Leishmania (Viannia) braziliensis (n = 319), and Leishmania (Leishmania) amazonensis (n = 141). Recognizing the species of animals involved in the epidemiology and biological cycle of the protozoan is important, as this allows for the identification of environmental biomarkers, knowledge of Leishmania species can improve the control zoonotic leishmaniasis.
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Affiliation(s)
- Fabiana Raquel Ratzlaff
- Laboratório de Doenças Parasitárias (LADOPAR), Departamento de Medicina Veterinária Preventiva, Centro de Ciências Rurais (CCR), Universidade Federal de Santa Maria (UFSM), Av. Roraima, N°1000, Prédio 63D, Bairro Camobi, Santa Maria, RS, CEP 97105900, Brazil
| | - Vanessa Osmari
- Laboratório de Doenças Parasitárias (LADOPAR), Departamento de Medicina Veterinária Preventiva, Centro de Ciências Rurais (CCR), Universidade Federal de Santa Maria (UFSM), Av. Roraima, N°1000, Prédio 63D, Bairro Camobi, Santa Maria, RS, CEP 97105900, Brazil
| | - Daniele da Silva
- Laboratório de Doenças Parasitárias (LADOPAR), Departamento de Medicina Veterinária Preventiva, Centro de Ciências Rurais (CCR), Universidade Federal de Santa Maria (UFSM), Av. Roraima, N°1000, Prédio 63D, Bairro Camobi, Santa Maria, RS, CEP 97105900, Brazil
| | - Jaíne Soares de Paula Vasconcellos
- Laboratório de Doenças Parasitárias (LADOPAR), Departamento de Medicina Veterinária Preventiva, Centro de Ciências Rurais (CCR), Universidade Federal de Santa Maria (UFSM), Av. Roraima, N°1000, Prédio 63D, Bairro Camobi, Santa Maria, RS, CEP 97105900, Brazil
| | - Luciana Pötter
- Laboratório de Pastos e Suplementos, Departamento de Zootecnia, Centro de Ciências Rurais (CCR), Universidade Federal de Santa Maria (UFSM), Av. Roraima, N°1000, Bairro Camobi, Santa Maria, RS, CEP 97105900, Brazil
| | - Fagner D'ambroso Fernandes
- Laboratório de Doenças Parasitárias (LADOPAR), Departamento de Medicina Veterinária Preventiva, Centro de Ciências Rurais (CCR), Universidade Federal de Santa Maria (UFSM), Av. Roraima, N°1000, Prédio 63D, Bairro Camobi, Santa Maria, RS, CEP 97105900, Brazil.
- Centro Universitário Ritter Dos Reis (UniRitter), Campus FAPA, Av. Manoel Elias, 2001 - Passo das Pedras, Porto Alegre, 91240-261, Brazil.
| | - José Américo de Mello Filho
- Laboratório de Análises Ambientais por Geoprocessamento (LAGEO), Departamento de Engenharia Rural, Centro de Ciências Rurais (CCR), Universidade Federal de Santa Maria (UFSM), Av. Roraima, N°1000, Prédio 44 J, Bairro Camobi, Santa Maria, RS, CEP 97105-900, Brazil
| | - Sônia de Avila Botton
- Laboratório de Saúde Única (LASUS), Departamento de Medicina Veterinária Preventiva, Centro de Ciências Rurais (CCR), Universidade Federal de Santa Maria (UFSM), Av. Roraima, nº 1000, Prédio 44, Bairro Camobi, Santa Maria, Rio Grande do Sul, CEP 97105-900, Brazil
| | - Fernanda Silveira Flores Vogel
- Laboratório de Doenças Parasitárias (LADOPAR), Departamento de Medicina Veterinária Preventiva, Centro de Ciências Rurais (CCR), Universidade Federal de Santa Maria (UFSM), Av. Roraima, N°1000, Prédio 63D, Bairro Camobi, Santa Maria, RS, CEP 97105900, Brazil
| | - Luís Antônio Sangioni
- Laboratório de Doenças Parasitárias (LADOPAR), Departamento de Medicina Veterinária Preventiva, Centro de Ciências Rurais (CCR), Universidade Federal de Santa Maria (UFSM), Av. Roraima, N°1000, Prédio 63D, Bairro Camobi, Santa Maria, RS, CEP 97105900, Brazil
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Ely VL, Espindola JP, Barasuol BM, Sangioni LA, Pereira DB, de Avila Botton S. Protothecosis in veterinary medicine: a mini-review. Lett Appl Microbiol 2023:7191846. [PMID: 37286817 DOI: 10.1093/lambio/ovad066] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Protothecosis is an important infection caused by Prototheca spp., an alga that affect humans and animals. Prototheca spp. infections determine losses of production and quality of life for the affected animals. In this disease, prevention and early diagnosis are essential to avoid the spread of the agent to susceptible hosts. This review aimed to assemble the reported cases of protothecosis in Veterinary Medicine, highlighting Prototheca species involved in the infections, the main animal species affected, as well as the clinical manifestations, diagnosis, and treatment. Our findings showed that protothecosis has been reported in various domestic and wild animal species, presenting diverse clinical manifestations, including mastitis in cows, respiratory manifestations in goats and cats, and a wide range of clinical signs in dogs. The clinical diagnosis and treatment of Prototheca spp. infections are difficult and infected animals are frequently discarded or euthanized. Due to the importance of this infection, protothecosis must be considered an important differential diagnosis in routine clinical Veterinary Medicine.
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Affiliation(s)
- Valessa Lunkes Ely
- Universidade Federal de Santa Maria (UFSM), Centro de Ciências Rurais (CCR), Departamento de Medicina Veterinária Preventiva (DMVP), Programa de Pós-graduação em Medicina Veterinária (PPGMV). Av. Roraima, 1000, Prédio 44 (CCRII), Sala 5132. Campus Sede - Camobi. Santa Maria, Rio Grande do Sul (RS), Brasil. CEP 97105-900
| | - Julia Pires Espindola
- Universidade Federal de Santa Maria (UFSM), Centro de Ciências Rurais (CCR), Departamento de Medicina Veterinária Preventiva (DMVP), Programa de Pós-graduação em Medicina Veterinária (PPGMV). Av. Roraima, 1000, Prédio 44 (CCRII), Sala 5132. Campus Sede - Camobi. Santa Maria, Rio Grande do Sul (RS), Brasil. CEP 97105-900
| | - Bibiana Martins Barasuol
- Universidade Federal de Santa Maria (UFSM), Centro de Ciências Rurais (CCR), Departamento de Medicina Veterinária Preventiva (DMVP), Programa de Pós-graduação em Medicina Veterinária (PPGMV). Av. Roraima, 1000, Prédio 44 (CCRII), Sala 5132. Campus Sede - Camobi. Santa Maria, Rio Grande do Sul (RS), Brasil. CEP 97105-900
| | - Luís Antônio Sangioni
- Universidade Federal de Santa Maria (UFSM), Centro de Ciências Rurais (CCR), Departamento de Medicina Veterinária Preventiva (DMVP), Programa de Pós-graduação em Medicina Veterinária (PPGMV). Av. Roraima, 1000, Prédio 44 (CCRII), Sala 5132. Campus Sede - Camobi. Santa Maria, Rio Grande do Sul (RS), Brasil. CEP 97105-900
| | - Daniela Brayer Pereira
- Universidade Federal de Pelotas (UFPel), Instituto de Biologia (IB), Departamento de Microbiologia e Parasitologia, Programa de Pós-graduação em Microbiologia e Parasitologia (PPGMPAR). Travessa André Dreyfus, s/n, Prédios 18 e 25, Campus Universitário do Capão do Leão, Capão do Leão, RS, Brasil. CEP 96010-900
| | - Sônia de Avila Botton
- Universidade Federal de Santa Maria (UFSM), Centro de Ciências Rurais (CCR), Departamento de Medicina Veterinária Preventiva (DMVP), Programa de Pós-graduação em Medicina Veterinária (PPGMV). Av. Roraima, 1000, Prédio 44 (CCRII), Sala 5132. Campus Sede - Camobi. Santa Maria, Rio Grande do Sul (RS), Brasil. CEP 97105-900
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da Silva Giacomini L, Fernandes FD, Guerra RR, de Avila Botton S, Sangioni LA, Vogel FSF. Production performance and economic analysis of broiler chickens after vaccination with a live attenuated vaccine against avian coccidiosis. Parasitol Res 2023:10.1007/s00436-023-07879-3. [PMID: 37212834 DOI: 10.1007/s00436-023-07879-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Accepted: 05/14/2023] [Indexed: 05/23/2023]
Abstract
The objective of this study was to evaluate the effectiveness of live attenuated commercial vaccine LIVACOX® T against avian coccidiosis upon parasite exposure through its correlation with productive and economic performance, clinical observation, and oocyst excretion of broiler chickens. For this purpose, 420 1-day-old Cobb chicks were divided into five groups of 84 birds: (G1) unvaccinated and unchallenged control; (G2) vaccinated on day 0; (G3) challenged on day 1; (G4) vaccinated on day 0 and challenged on day 14; and (G5) challenged on day 14. For 28 days, the clinical signs of infection, weight and feed conversion of the birds, and excretion of oocysts in the feces were evaluated. Macroscopic analysis of intestinal lesions in birds was also performed. After vaccination in G2, G3, and G4 as well as after challenge in G3, G4, and G5, there was an increase in oocyst excretion. In the analysis of weight gain, the difference in final weight between groups G3 and G4 is - 105.74 g per bird. Therefore, if we multiply this value by the average number of birds slaughtered per day in a medium/large slaughterhouse (250,000), we have 26,435 kg of chicken meat per day of slaughter, representing 581,570 kg of monthly losses (22 days of slaughter/month), or approximately R$3,489,420.00 (US$872,355.00), considering the commercial value at R$6.00/kg (US$ 1.5/kg). Thus, the productive and economic impact of coccidiosis in broiler chickens is evident, and the importance of vaccination to prevent the occurrence of the disease and reduce subsequent loss is highlighted.
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Affiliation(s)
- Letícia da Silva Giacomini
- Laboratório de Doenças Parasitárias (LADOPAR), Departamento de Medicina Veterinária Preventiva (DMVP), Centro de Ciências Rurais (CCR), Universidade Federal de Santa Maria (UFSM), Av. Roraima, nº 1000, Prédio 63D, Bairro Camobi, Santa Maria, Rio Grande do Sul, 97105-900, Brazil
| | - Fagner D'ambroso Fernandes
- Centro Universitário Ritter Dos Reis (UniRitter), Av. Manoel Elias, nº 2001, Bairro Passo das Pedras, Porto Alegre, Rio Grande do Sul, 91240-261, Brazil.
| | - Renata Rojas Guerra
- Departamento de Estatística, Universidade Federal de Santa Maria (UFSM), Av. Roraima, nº 1000, Prédio 13, Sala 1206, Bairro Camobi, Santa Maria, Rio Grande do Sul, 97105-900, Brazil
| | - Sônia de Avila Botton
- Laboratório de Saúde Única (LASUS), Departamento de Medicina Veterinária Preventiva (DMVP), Centro de Ciências Rurais (CCR), Universidade Federal de Santa Maria (UFSM), Av. Roraima, nº 1000, Prédio 44, Bairro Camobi, Santa Maria, Rio Grande do Sul, 97105-900, Brazil
| | - Luís Antônio Sangioni
- Laboratório de Doenças Parasitárias (LADOPAR), Departamento de Medicina Veterinária Preventiva (DMVP), Centro de Ciências Rurais (CCR), Universidade Federal de Santa Maria (UFSM), Av. Roraima, nº 1000, Prédio 63D, Bairro Camobi, Santa Maria, Rio Grande do Sul, 97105-900, Brazil
| | - Fernanda Silveira Flores Vogel
- Laboratório de Doenças Parasitárias (LADOPAR), Departamento de Medicina Veterinária Preventiva (DMVP), Centro de Ciências Rurais (CCR), Universidade Federal de Santa Maria (UFSM), Av. Roraima, nº 1000, Prédio 63D, Bairro Camobi, Santa Maria, Rio Grande do Sul, 97105-900, Brazil
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7
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Dos Santos EO, Klain VF, Manrique SB, Roman IJ, Dos Santos HF, Sangioni LA, Vogel FSF, Reck J, Webster A, Padilha TC, de Almeida MAB, Dos Santos E, Born LC, Botton SA. The Influence of Landscape Structure on the Occurrence of Neospora caninum, Toxoplasma gondii, and Sarcocystis spp. in Free-Living Neotropical Primates. Acta Parasitol 2022; 67:1680-1696. [PMID: 36178615 DOI: 10.1007/s11686-022-00623-4] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Accepted: 09/20/2022] [Indexed: 11/28/2022]
Abstract
PURPOSE Habitat fragmentation is the main threat to primate survival in the world. Additionally, changes in the environments in which they live can also contribute to exposure to pathogens. To investigate some pathogens that free-living primates may be exposed to in Rio Grande do Sul State (RS; southern Brazil) and characterize the forest remnants in which they live, we investigated anti-Neospora caninum, Toxoplasma gondii, and Sarcocystis spp. antibodies in the serum of the animals. METHODS We analyzed 105 serum samples from 63 black howler monkeys (Alouatta caraya), 39 southern brown howler monkeys (Alouatta guariba clamitans), and 03 capuchin monkeys (Sapajus nigritus cucullatus), which were captured in forest fragments of RS. Indirect fluorescence antibody test (IFAT) and indirect hemagglutination assay (IHA) were used to detect antibodies to the agents. We then characterized the landscapes in a multiscale approach in radii from 200 to 1400 m to investigate the relationship of the presence of the agents with landscape elements. RESULTS In the IFAT-IgG, 13.3% (14/105) of the samples were seropositive for N. caninum, 4.8% (5/105) for T. gondii, and 5.7% (6/105) for Sarcocystis spp. In the IHA-IgM/IgG, 24.8% (26/105) were seropositive for T. gondii. The metrics that best explained exposure to agents were edge and patch density, forest cover, urban cover, and average Euclidean distance to the nearest patch. CONCLUSIONS This study indicated that the primates were exposed to the agents studied, demonstrating that some landscape features are associated with exposures to the investigated pathogens.
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Affiliation(s)
- Elisandro O Dos Santos
- Laboratório de Doenças Parasitárias, Departamento de Medicina Veterinária Preventiva, Centro de Ciências Rurais da Universidade Federal de Santa Maria (UFSM), Rio Grande do Sul, Av. Roraima 1000, Prédio 63C, Santa Maria, RS, 97105-900, Brazil.
| | - Vinícius F Klain
- Laboratório de Primatologia, Escola de Ciências da Saúde E da Vida da Pontifícia Universidade Católica Do Rio Grande Do Sul (PUCRS), Rio Grande Do Sul. Av. Ipiranga, 6681 - Partenon, Porto Alegre, RS, 90619-900, Brazil
| | - Sebastián B Manrique
- Laboratório de Primatologia, Escola de Ciências da Saúde E da Vida da Pontifícia Universidade Católica Do Rio Grande Do Sul (PUCRS), Rio Grande Do Sul. Av. Ipiranga, 6681 - Partenon, Porto Alegre, RS, 90619-900, Brazil
| | - Isac Junior Roman
- Laboratório de Doenças Parasitárias, Departamento de Medicina Veterinária Preventiva, Centro de Ciências Rurais da Universidade Federal de Santa Maria (UFSM), Rio Grande do Sul, Av. Roraima 1000, Prédio 63C, Santa Maria, RS, 97105-900, Brazil
| | - Helton F Dos Santos
- Núcleo de Estudos E Pesquisas Em Animais Silvestres, Departamento de Medicina Veterinária Preventiva, Laboratório Central de Diagnóstico de Patologias Aviárias, Universidade Federal de Santa Maria (UFSM), Av. Roraima 1000, Prédio 63C, Santa Maria, RS, 97105-900, Brazil
| | - Luís Antônio Sangioni
- Laboratório de Doenças Parasitárias, Departamento de Medicina Veterinária Preventiva, Centro de Ciências Rurais da Universidade Federal de Santa Maria (UFSM), Rio Grande do Sul, Av. Roraima 1000, Prédio 63C, Santa Maria, RS, 97105-900, Brazil
| | - Fernanda S F Vogel
- Laboratório de Doenças Parasitárias, Departamento de Medicina Veterinária Preventiva, Centro de Ciências Rurais da Universidade Federal de Santa Maria (UFSM), Rio Grande do Sul, Av. Roraima 1000, Prédio 63C, Santa Maria, RS, 97105-900, Brazil
| | - José Reck
- Laboratório de Parasitologia Do Instituto de Pesquisas Veterinárias Desidério Finamor, Secretaria Estadual de Agricultura, Pecuária e Desenvolvimento Rural, Eldorado Do Sul, Rio Grande Do Sul, Estrada Do Conde, 6000 - Sans Souci, Eldorado Do Sul, RS, 92990-000, Brazil
| | - Anelise Webster
- Laboratório de Parasitologia Do Instituto de Pesquisas Veterinárias Desidério Finamor, Secretaria Estadual de Agricultura, Pecuária e Desenvolvimento Rural, Eldorado Do Sul, Rio Grande Do Sul, Estrada Do Conde, 6000 - Sans Souci, Eldorado Do Sul, RS, 92990-000, Brazil
| | - Thamiris C Padilha
- Laboratório de Parasitologia Do Instituto de Pesquisas Veterinárias Desidério Finamor, Secretaria Estadual de Agricultura, Pecuária e Desenvolvimento Rural, Eldorado Do Sul, Rio Grande Do Sul, Estrada Do Conde, 6000 - Sans Souci, Eldorado Do Sul, RS, 92990-000, Brazil
| | - Marco Antônio B de Almeida
- Divisão de Vigilância Ambiental Em Saúde, Centro Estadual de Vigilância Em Saúde, Secretaria de Estado da Saúde, Porto Alegre, Rio Grande Do Sul. Av. Ipiranga, 5400 - Jardim Botânico, Porto Alegre, RS, 90450-190, Brazil
| | - Edmilson Dos Santos
- Divisão de Vigilância Ambiental Em Saúde, Centro Estadual de Vigilância Em Saúde, Secretaria de Estado da Saúde, Porto Alegre, Rio Grande Do Sul. Av. Ipiranga, 5400 - Jardim Botânico, Porto Alegre, RS, 90450-190, Brazil
| | - Lucas C Born
- Divisão de Vigilância Ambiental Em Saúde, Centro Estadual de Vigilância Em Saúde, Secretaria de Estado da Saúde, Porto Alegre, Rio Grande Do Sul. Av. Ipiranga, 5400 - Jardim Botânico, Porto Alegre, RS, 90450-190, Brazil
| | - Sônia A Botton
- Laboratório de Doenças Parasitárias, Departamento de Medicina Veterinária Preventiva, Centro de Ciências Rurais da Universidade Federal de Santa Maria (UFSM), Rio Grande do Sul, Av. Roraima 1000, Prédio 63C, Santa Maria, RS, 97105-900, Brazil
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8
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de Souza ML, Roman IJ, Mortari APG, Ratzlaff FR, Mazaro RD, Cargnelutti JF, Lübeck I, Fighera RA, de Andrade CM, de Ávila Botton S, Vogel FSF, Sangioni LA. Dynamics of Leishmania spp. infection in dogs from an unaffected region in transition to a visceral leishmaniasis transmission area, Rio Grande do Sul, Brazil. Parasitol Res 2022; 121:3269-3273. [PMID: 36121564 DOI: 10.1007/s00436-022-07654-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [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: 06/23/2022] [Accepted: 09/01/2022] [Indexed: 10/14/2022]
Abstract
In Brazil, visceral leishmaniasis (VL) has been expanding and urbanizing, mainly in non-endemic areas such as the State of Rio Grande do Sul. Considering that infected dogs are the main reservoirs of VL in urban areas, the present study aimed to evaluate the propagation of canine visceral leishmaniasis (CVL) infection from an unaffected region in transition to a VL transmission area. For this, 1159 and 1087 samples of canine serum from 2015 and 2021, respectively, were analyzed, using the indirect immunofluorescence test. In addition, necropsy reports between 2007 and 2021 were evaluated. The results showed a prevalence of anti-Leishmania spp. antibodies of 7.5% in the samples from 2015, while in 2021 samples, it was 23.5%, with an incidence of 0.4 cases per 100 dogs. It is noteworthy that in 2007, there was no record of CVL as the cause of death in the pathological reports, and in 2021, 41 diagnoses were made with the protozoan being a determinant of the death of the animal. These values indicate an increasing trend in the prevalence and incidence coefficients of CVL. The results of this study allowed us to verify the spread of the disease from an unaffected region to a transmission area of the agent, as well as provide subsidies for health authorities to implement improvements in the CVL control program in the municipality, to mitigate the emergence of human cases of the disease.
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Affiliation(s)
- Michelli Lopes de Souza
- Laboratório de Doenças Parasitárias (LADOPAR), Departamento de Medicina Veterinária Preventiva (DMVP), Centro de Ciências Rurais (CCR), Universidade Federal de Santa Maria (UFSM). Av. Roraima, nº 1000, Prédio 63C, Bairro Camobi, Santa Maria, Rio Grande do Sul, CEP: 97105-900, Brazil.
| | - Isac Junior Roman
- Laboratório de Doenças Parasitárias (LADOPAR), Departamento de Medicina Veterinária Preventiva (DMVP), Centro de Ciências Rurais (CCR), Universidade Federal de Santa Maria (UFSM). Av. Roraima, nº 1000, Prédio 63C, Bairro Camobi, Santa Maria, Rio Grande do Sul, CEP: 97105-900, Brazil
| | - Ana Paula Gnocato Mortari
- Laboratório de Doenças Parasitárias (LADOPAR), Departamento de Medicina Veterinária Preventiva (DMVP), Centro de Ciências Rurais (CCR), Universidade Federal de Santa Maria (UFSM). Av. Roraima, nº 1000, Prédio 63C, Bairro Camobi, Santa Maria, Rio Grande do Sul, CEP: 97105-900, Brazil
| | - Fabiana Raquel Ratzlaff
- Laboratório de Doenças Parasitárias (LADOPAR), Departamento de Medicina Veterinária Preventiva (DMVP), Centro de Ciências Rurais (CCR), Universidade Federal de Santa Maria (UFSM). Av. Roraima, nº 1000, Prédio 63C, Bairro Camobi, Santa Maria, Rio Grande do Sul, CEP: 97105-900, Brazil
| | - Renata Dalcol Mazaro
- Serviço de Consultoria Diagnóstica Veterinária (SEDIVET) - Laboratório de Patologia Veterinária (LPV), Departamento de Patologia, Centro de Ciências da Saúde (CCS), Universidade Federal de Santa Maria (UFSM). Av. Roraima, nº 1000, Bairro Camobi, Santa Maria, Rio Grande do Sul, CEP: 97105-900, Brazil
| | - Juliana Felipetto Cargnelutti
- Laboratório de Bacteriologia (LABAC), Departamento de Medicina Veterinária Preventiva (DMVP), Centro de Ciências Rurais (CCR), Universidade Federal de Santa Maria (UFSM). Av. Roraima, nº 1000, Prédio 63C, Bairro Camobi, Santa Maria, Rio Grande do Sul, CEP: 97105-900, Brazil
| | - Irina Lübeck
- Laboratório de Doenças Infectocontagiosas Animais, Universidade Federal Do Pampa (UNIPAMPA), 118, BR 472 - Km 585, Uruguaiana, Rio Grande do Sul, CEP 97501-970, Brazil
| | - Rafael Almeida Fighera
- Serviço de Consultoria Diagnóstica Veterinária (SEDIVET) - Laboratório de Patologia Veterinária (LPV), Departamento de Patologia, Centro de Ciências da Saúde (CCS), Universidade Federal de Santa Maria (UFSM). Av. Roraima, nº 1000, Bairro Camobi, Santa Maria, Rio Grande do Sul, CEP: 97105-900, Brazil
| | - Cinthia Melazzo de Andrade
- Laboratório de Patologia Clínica Veterinária (LACVET), Departamento de Clínica de Pequenos Animais, Centro de Ciências Rurais (CCR), Universidade Federal de Santa Maria (UFSM). Av. Roraima, nº 1000, Bairro Camobi, Santa Maria, Rio Grande do Sul, CEP: 97105-900, Brazil
| | - Sônia de Ávila Botton
- Laboratório de Doenças Parasitárias (LADOPAR), Departamento de Medicina Veterinária Preventiva (DMVP), Centro de Ciências Rurais (CCR), Universidade Federal de Santa Maria (UFSM). Av. Roraima, nº 1000, Prédio 63C, Bairro Camobi, Santa Maria, Rio Grande do Sul, CEP: 97105-900, Brazil
| | - Fernanda Silveira Flôres Vogel
- Laboratório de Doenças Parasitárias (LADOPAR), Departamento de Medicina Veterinária Preventiva (DMVP), Centro de Ciências Rurais (CCR), Universidade Federal de Santa Maria (UFSM). Av. Roraima, nº 1000, Prédio 63C, Bairro Camobi, Santa Maria, Rio Grande do Sul, CEP: 97105-900, Brazil
| | - Luís Antônio Sangioni
- Laboratório de Doenças Parasitárias (LADOPAR), Departamento de Medicina Veterinária Preventiva (DMVP), Centro de Ciências Rurais (CCR), Universidade Federal de Santa Maria (UFSM). Av. Roraima, nº 1000, Prédio 63C, Bairro Camobi, Santa Maria, Rio Grande do Sul, CEP: 97105-900, Brazil
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9
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Ratzlaff FR, Fernandes FD, Osmari V, Silva D, de Paula Vasconcellos JS, Braunig P, Vogel FSF, de Ávila Botton S, Dos Santos HF, Cargnelutti JF, Caldart ET, Campos A, de Mello Filho JA, Soares JF, Fagundes-Moreira R, Witt AA, Pacheco SM, Sangioni LA. Prevalence and molecular detection of Leishmania spp. in bats from Rio Grande do Sul state, Brazil. Parasitol Res 2022; 121:3193-3202. [PMID: 36048268 DOI: 10.1007/s00436-022-07639-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [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: 05/02/2022] [Accepted: 08/23/2022] [Indexed: 11/29/2022]
Abstract
This study aimed to detect the occurrence of infection by Leishmania spp.in bats from 34 municipalities of Rio Grande do Sul state (RS; southern Brazil) from 2016 to 2021. A total of 109 bats were provided by the Centro Estadual de Vigilância em Saúde of RS, including six species belonged to Molossidae family, six to Vespertilionidae family, and two to Phyllostomidae family. Leishmania spp. was identified using the nested-PCR method by amplifying the SSU rDNA ribosomal subunit gene into four organ pools: (1) the liver, spleen, and lymph node; (2) heart and lungs; (3) skin; and (4) bone marrow of each bat. Three (3/109, 2.7%) animals tested positive for Leishmania spp. The respective PCR-positive organs came from pools 1 and 3. Two bats (Tadarida brasiliensis) were from the municipality of Canoas, and sequences analysis confirms the species identification as Leishmania infantum. In the third bat (Molossus molossus), from Rio Grande, it was not possible to determine the protozoa species, being considered Leishmania spp. Our results indicate that bats can participate in the biological cycle of Leishmania spp. and perform as host, reservoir, and/or source of infection of the protozoa in different areas of RS. More studies will be needed to elucidate the role of these Chiropteras in the circulation of Leishmania spp. This is the first study reporting the occurrence of Leishmania spp. in bats in Rio Grande do Sul state, southern Brazil.
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Affiliation(s)
- Fabiana Raquel Ratzlaff
- Laboratório de Doenças Parasitárias (LADOPAR), Departamento de Medicina Veterinária Preventiva (DMVP), Centro de Ciências Rurais (CCR), Universidade Federal de Santa Maria (UFSM), Av. Roraima, nº 1000, Prédio 63D, Bairro Camobi, Santa Maria, Rio Grande do Sul, CEP, 97105-900, Brazil
| | - Fagner D'ambroso Fernandes
- Laboratório de Doenças Parasitárias (LADOPAR), Departamento de Medicina Veterinária Preventiva (DMVP), Centro de Ciências Rurais (CCR), Universidade Federal de Santa Maria (UFSM), Av. Roraima, nº 1000, Prédio 63D, Bairro Camobi, Santa Maria, Rio Grande do Sul, CEP, 97105-900, Brazil.
| | - Vanessa Osmari
- Laboratório de Doenças Parasitárias (LADOPAR), Departamento de Medicina Veterinária Preventiva (DMVP), Centro de Ciências Rurais (CCR), Universidade Federal de Santa Maria (UFSM), Av. Roraima, nº 1000, Prédio 63D, Bairro Camobi, Santa Maria, Rio Grande do Sul, CEP, 97105-900, Brazil
| | - Daniele Silva
- Laboratório de Doenças Parasitárias (LADOPAR), Departamento de Medicina Veterinária Preventiva (DMVP), Centro de Ciências Rurais (CCR), Universidade Federal de Santa Maria (UFSM), Av. Roraima, nº 1000, Prédio 63D, Bairro Camobi, Santa Maria, Rio Grande do Sul, CEP, 97105-900, Brazil
| | - Jaíne Soares de Paula Vasconcellos
- Laboratório de Doenças Parasitárias (LADOPAR), Departamento de Medicina Veterinária Preventiva (DMVP), Centro de Ciências Rurais (CCR), Universidade Federal de Santa Maria (UFSM), Av. Roraima, nº 1000, Prédio 63D, Bairro Camobi, Santa Maria, Rio Grande do Sul, CEP, 97105-900, Brazil
| | - Patrícia Braunig
- Laboratório de Doenças Parasitárias (LADOPAR), Departamento de Medicina Veterinária Preventiva (DMVP), Centro de Ciências Rurais (CCR), Universidade Federal de Santa Maria (UFSM), Av. Roraima, nº 1000, Prédio 63D, Bairro Camobi, Santa Maria, Rio Grande do Sul, CEP, 97105-900, Brazil
| | - Fernanda Silveira Flores Vogel
- Laboratório de Doenças Parasitárias (LADOPAR), Departamento de Medicina Veterinária Preventiva (DMVP), Centro de Ciências Rurais (CCR), Universidade Federal de Santa Maria (UFSM), Av. Roraima, nº 1000, Prédio 63D, Bairro Camobi, Santa Maria, Rio Grande do Sul, CEP, 97105-900, Brazil
| | - Sônia de Ávila Botton
- Laboratório de Doenças Parasitárias (LADOPAR), Departamento de Medicina Veterinária Preventiva (DMVP), Centro de Ciências Rurais (CCR), Universidade Federal de Santa Maria (UFSM), Av. Roraima, nº 1000, Prédio 63D, Bairro Camobi, Santa Maria, Rio Grande do Sul, CEP, 97105-900, Brazil
| | - Helton Fernandes Dos Santos
- Laboratório Central de Diagnóstico Em Patologia Aviária (LCDPA), Departamento de Medicina Veterinária Preventiva (DMVP), Centro de Ciências Rurais (CCR), Universidade Federal de Santa Maria (UFSM), CEP, Av. Roraima, nº 1000, Prédio 44, Bairro Camobi, Santa Maria, Rio Grande do Sul, 97105-900, Brazil
| | - Juliana Felipetto Cargnelutti
- Laboratório de Bacteriologia (LABAC), Departamento de Medicina Veterinária Preventiva (DMVP), Universidade Federal de Santa Maria (UFSM), CEP, Av. Roraima, nº 1000, Prédio 63D, Bairro Camobi, Santa Maria, RS, 97105-900, Brazil
| | - Eloiza Teles Caldart
- Departamento de Medicina Veterinária Preventiva, Universidade Estadual de Londrina (UEL), CEP, Rodovia Celso Garcia Cid, PR-445, Km 380, Londrina, Paraná, 86057-970, Brazil
| | - Aline Campos
- Centro Estadual de Vigilância Em Saúde (CEVS), Av. Ipiranga, 5400, Porto Alegre, Rio Grande do Sul, CEP, 90610-000, Brazil
| | - José Américo de Mello Filho
- Departamento de Engenharia Rural, Centro de Ciências Rurais (CCR), Universidade Federal de Santa Maria (UFSM), CEP, Av. Roraima, 1000, Bairro Camobi, Santa Maria, Rio Grande do Sul, 97105-900, Brazil
| | - João Fabio Soares
- Laboratório de Protozoologia e Rickettsioses Vetoriais, Faculdade de Veterinária, Universidade de Federal Do Rio Grande Do Sul (UFRGS), Av. Bento Gonçalves, 9090, Porto Alegre, Rio Grande do Sul, CEP, 91540-000, Brazil
| | - Renata Fagundes-Moreira
- Laboratório de Protozoologia e Rickettsioses Vetoriais, Faculdade de Medicina Veterinária, Universidade de Federal Do Rio Grande Do Sul (UFRGS), Av. Bento Gonçalves, 9090, Porto Alegre, Rio Grande do Sul, CEP, 91540-000, Brazil
| | - André Alberto Witt
- Divisão de Defesa Sanitária Animal (DDA), Secretaria da Agricultura, Pecuária e Desenvolvimento Rural (SEAPDRA), Av. Getúlio Vargas, 1384, Porto Alegre, CEP, 90150-004, Brazil
| | - Susi Missel Pacheco
- Instituto Sauver - Organização não governamental, R. Dr. Paulo Franco Dos Réis, 40, Boa Vista, Porto Alegre, 90480-090, Brazil
| | - Luís Antônio Sangioni
- Laboratório de Doenças Parasitárias (LADOPAR), Departamento de Medicina Veterinária Preventiva (DMVP), Centro de Ciências Rurais (CCR), Universidade Federal de Santa Maria (UFSM), Av. Roraima, nº 1000, Prédio 63D, Bairro Camobi, Santa Maria, Rio Grande do Sul, CEP, 97105-900, Brazil
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Ely VL, Pereira DIB, da Costa MM, Panagio L, Nakasato G, Reis G, Cargnelutti JF, Sangioni LA, de Avila Botton S. Activity of biogenic silver nanoparticles against isolates of
Prototheca
species from bovine mastitis. Lett Appl Microbiol 2022; 75:24-28. [DOI: 10.1111/lam.13696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 02/17/2022] [Accepted: 02/25/2022] [Indexed: 11/26/2022]
Affiliation(s)
- Valessa Lunkes Ely
- Programa de Pós‐graduação em Medicina Veterinária (PPGMV) Departamento de Medicina Veterinária Preventiva (DMVP) Universidade Federal de Santa Maria (UFSM). Av. Roraima 1000 Prédio 44 Sala 5125 Bairro Camobi Santa Maria RS Brasil
| | - Daniela Isabel Brayer Pereira
- Departamento de Microbiologia e Parasitologia Instituto de Biologia Universidade Federal de Pelotas (UFPel) Prédio 18 Sala 14 Campus Universitário Capão do Leão s/nº CEP 96160‐000 Brasil
| | - Mateus Matiuzzi da Costa
- Universidade Federal do Vale do São Francisco (UNIVASF) Projeto Irrigação Senador Nilo Coelho s/nº Rodovia BR 407 ‐ Km 12, Lote 543 Petrolina CEP 56300‐990 Brasil
| | - Luciano Panagio
- Universidade Estadual de Londrina (UEL) Centro de Ciências Biológicas Departamento de Microbiologia Rodovia Celso Garcia Cid Paraná 445 Km 380, Campus Universitário 86051990 Londrina Brasil
| | - Gerson Nakasato
- Universidade Estadual de Londrina (UEL) Centro de Ciências Biológicas Departamento de Microbiologia Rodovia Celso Garcia Cid Paraná 445 Km 380, Campus Universitário 86051990 Londrina Brasil
| | - Guilherme Reis
- Universidade Estadual de Londrina (UEL) Centro de Ciências Biológicas Departamento de Microbiologia Rodovia Celso Garcia Cid Paraná 445 Km 380, Campus Universitário 86051990 Londrina Brasil
| | - Juliana Felipetto Cargnelutti
- Programa de Pós‐graduação em Medicina Veterinária (PPGMV) Departamento de Medicina Veterinária Preventiva (DMVP) Universidade Federal de Santa Maria (UFSM). Av. Roraima 1000 Prédio 44 Sala 5125 Bairro Camobi Santa Maria RS Brasil
| | - Luís Antônio Sangioni
- Programa de Pós‐graduação em Medicina Veterinária (PPGMV) Departamento de Medicina Veterinária Preventiva (DMVP) Universidade Federal de Santa Maria (UFSM). Av. Roraima 1000 Prédio 44 Sala 5125 Bairro Camobi Santa Maria RS Brasil
| | - Sônia de Avila Botton
- Programa de Pós‐graduação em Medicina Veterinária (PPGMV) Departamento de Medicina Veterinária Preventiva (DMVP) Universidade Federal de Santa Maria (UFSM). Av. Roraima 1000 Prédio 44 Sala 5125 Bairro Camobi Santa Maria RS Brasil
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Ries AS, Roman IJ, Bräunig P, Kommers GD, Sangioni LA, Cargnelutti JF, Vogel FSF. Acaricide activity of organo-modified siloxane and acaricide associations in Rhipicephalus microplus. Parasitol Res 2021; 120:3673-3680. [PMID: 34626236 DOI: 10.1007/s00436-021-07335-0] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Accepted: 09/28/2021] [Indexed: 10/20/2022]
Abstract
Search to a new alternative to control bovine ticks (Rhipicephalus microplus), the present study aimed to evaluate the acaricidal activity of organo-modified siloxane alone and in association with different commercial products or with piperonyl butoxide (BPO). Engorged females were subjected to an in vitro immersion test and 10 groups were used: control, 0.5% siloxane, 1% siloxane, 2% siloxane, 0.5% siloxane + 5% BPO, 1% siloxane + 5% BPO, 2% siloxane + 5% BPO, commercial product, 0.5% siloxane + commercial product, and 1% siloxane + commercial product. After immersion, engorged females were incubated for 14 days for oviposition and hatchability tests. Another immersion test was performed with 5% siloxane and 2.5% siloxane + 10% BPO to evaluate the histopathological changes. Then, engorged females were incubated for 0, 2, 4, 8, 12, 24, 36, 48, 60, 72, 84, 96, 120, 144, and 168 h and immersed in 10% formaldehyde for later analyses. The unassociated siloxane showed an acaricide efficacy of 93.88% at 2% concentration, and when associated with 5% BPO, it reached 100% efficacy at all tested concentrations. The tested commercial products showed enhanced efficacy when associated with siloxane. Histopathological analysis showed cell changes in both treatments and total cell disintegration after 120 h in the 5% siloxane group and after 96 h in the 2.5% siloxane + 10% BPO group. Therefore, siloxane alone or in combination is an alternative against R. microplus, and siloxane enhances the efficacy of available commercial products.
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Affiliation(s)
- Ananda Segabinazzi Ries
- Programa de Pós-Graduação Em Medicina Veterinária, Universidade Federal de Santa Maria (UFSM), Santa Maria, RS, Brazil. .,Laboratório de Doenças Parasitárias (Ladopar), Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria (UFSM), Av. Roraima 1000, prédio 63C - Parque de exposições, Santa Maria, RS, 97105-900, Brazil.
| | - Isac J Roman
- Programa de Pós-Graduação Em Medicina Veterinária, Universidade Federal de Santa Maria (UFSM), Santa Maria, RS, Brazil.,Laboratório de Doenças Parasitárias (Ladopar), Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria (UFSM), Av. Roraima 1000, prédio 63C - Parque de exposições, Santa Maria, RS, 97105-900, Brazil
| | - Patrícia Bräunig
- Laboratório de Doenças Parasitárias (Ladopar), Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria (UFSM), Av. Roraima 1000, prédio 63C - Parque de exposições, Santa Maria, RS, 97105-900, Brazil.,Departamento de Medicina Veterinária Preventiva, Centro de Ciências Rurais, Universidade Federal de Santa Maria (UFSM), Santa Maria, RS, Brazil
| | - Glaucia D Kommers
- Programa de Pós-Graduação Em Medicina Veterinária, Universidade Federal de Santa Maria (UFSM), Santa Maria, RS, Brazil.,Laboratório de Patologia Veterinária, Departamento de Patologia, Centro de Ciências da Saúde, Universidade Federal de Santa Maria (UFSM), Santa Maria, RS, Brazil
| | - Luís Antônio Sangioni
- Laboratório de Doenças Parasitárias (Ladopar), Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria (UFSM), Av. Roraima 1000, prédio 63C - Parque de exposições, Santa Maria, RS, 97105-900, Brazil.,Departamento de Medicina Veterinária Preventiva, Centro de Ciências Rurais, Universidade Federal de Santa Maria (UFSM), Santa Maria, RS, Brazil
| | - Juliana Felipetto Cargnelutti
- Programa de Pós-Graduação Em Medicina Veterinária, Universidade Federal de Santa Maria (UFSM), Santa Maria, RS, Brazil.,Departamento de Medicina Veterinária Preventiva, Centro de Ciências Rurais, Universidade Federal de Santa Maria (UFSM), Santa Maria, RS, Brazil
| | - Fernanda Silveira Flôres Vogel
- Laboratório de Doenças Parasitárias (Ladopar), Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria (UFSM), Av. Roraima 1000, prédio 63C - Parque de exposições, Santa Maria, RS, 97105-900, Brazil.,Departamento de Medicina Veterinária Preventiva, Centro de Ciências Rurais, Universidade Federal de Santa Maria (UFSM), Santa Maria, RS, Brazil
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12
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Ianiski LB, Stibbe PC, Denardi LB, Weiblen C, Soares MP, Valente JDSS, Sangioni LA, Pereira DIB, Santurio JM, Botton SDA. In vitro anti-Pythium insidiosum activity of amorolfine hydrochloride and azithromycin, alone and in combination. Med Mycol 2021; 59:67-73. [PMID: 32400872 DOI: 10.1093/mmy/myaa032] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [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: 12/20/2019] [Revised: 03/18/2020] [Accepted: 04/13/2020] [Indexed: 11/14/2022] Open
Abstract
Pythium insidiosum infections have been widely studied in an attempt to develop an effective therapeutic protocol for the treatment of human and animal pythiosis. Several antifungal agents are still prescribed against this oomycete, although they present contradictory results. To evaluate the susceptibility profile and to verify the morphological alterations in P. insidiosum isolates treated with amorolfine hydrochloride and azithromycin, alone or in combination. Susceptibility tests for P. insidiosum isolates (n = 20) against amorolfine hydrochloride (AMR) and azithromycin (AZM) were performed according to Clinical and Laboratory Standards Institutes (CLSI) protocol M38-A2. Combinations of both drugs were evaluated using the checkerboard microdilution method. Additionally, transmission and scanning electron microscopy were performed in order to verify the morphological alterations in P. insidiosum isolates in response to these drugs. All P. insidiosum isolates had a minimum inhibitory concentration (MIC) ranging from 16 to 64 mg/l and 8 to 64 mg/l for amorolfine hydrochloride and azithromycin, respectively. Synergistic interactions between the drugs were not observed, with antagonism in 59.8% of isolates, and indifferent interactions in 36.2%. Electron microscopy showed changes in the surface of P. insidiosum hyphae, disorganization of intracellular organelles, and changes in the plasma membrane and cell wall of oomycetes treated with the drugs. This is the first study to demonstrate in vitro anti-P. insidiosum effect of amorolfine hydrochloride. These results indicate the therapeutic potential of this drug against cutaneous and subcutaneous forms of pythiosis, but further studies are necessary to confirm this potential.
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Affiliation(s)
- Lara Baccarin Ianiski
- Universidade Federal de Santa Maria (UFSM), Centro de Ciências da Saúde (CCS), Programa de Pós-Graduação em Ciências Farmacêuticas, Santa Maria, RS, Brazil.,UFSM, CCS, Departamento de Microbiologia e Parasitologia, Laboratório de Pesquisas Micológicas, Santa Maria, RS, Brazil
| | - Paula Cristina Stibbe
- Universidade Federal de Santa Maria (UFSM), Centro de Ciências da Saúde (CCS), Programa de Pós-Graduação em Ciências Farmacêuticas, Santa Maria, RS, Brazil.,UFSM, CCS, Departamento de Microbiologia e Parasitologia, Laboratório de Pesquisas Micológicas, Santa Maria, RS, Brazil
| | - Laura Bedin Denardi
- UFSM, CCS, Departamento de Microbiologia e Parasitologia, Laboratório de Pesquisas Micológicas, Santa Maria, RS, Brazil
| | - Carla Weiblen
- UFSM, CCS, Departamento de Microbiologia e Parasitologia, Laboratório de Pesquisas Micológicas, Santa Maria, RS, Brazil.,UFSM, Centro de Ciências Rurais, Departamento de Medicina Veterinária Preventiva. Programa de Pós-Graduação em Medicina Veterinária, Santa Maria, RS, Brazil
| | - Mauro Pereira Soares
- Universidade Federal de Pelotas (UFPel), Faculdade de Veterinária, Laboratório Regional de Diagnóstico. Pelotas, RS, Brazil
| | - Julia de Souza Silveira Valente
- Universidade Federal de Pelotas (UFPel), Programa de Pós-Graduação em Microbiologia e Parasitologia, Instituto de Biologia, Departamento de Microbiologia e Parasitologia. Pelotas, RS, Brazil
| | - Luís Antônio Sangioni
- UFSM, Centro de Ciências Rurais, Departamento de Medicina Veterinária Preventiva. Programa de Pós-Graduação em Medicina Veterinária, Santa Maria, RS, Brazil
| | - Daniela Isabel Brayer Pereira
- Universidade Federal de Pelotas (UFPel), Programa de Pós-Graduação em Microbiologia e Parasitologia, Instituto de Biologia, Departamento de Microbiologia e Parasitologia. Pelotas, RS, Brazil
| | | | - Sônia de Avila Botton
- Universidade Federal de Santa Maria (UFSM), Centro de Ciências da Saúde (CCS), Programa de Pós-Graduação em Ciências Farmacêuticas, Santa Maria, RS, Brazil.,UFSM, Centro de Ciências Rurais, Departamento de Medicina Veterinária Preventiva. Programa de Pós-Graduação em Medicina Veterinária, Santa Maria, RS, Brazil
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13
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Ely VL, Costa MMD, Oliveira HPD, Silva Júnior FAGD, Pereira DIB, Soares MP, Vargas ACD, Sangioni LA, Cargnelutti JF, Ribeiro MG, Botton SDA. In vitro algicidal effect of polypyrrole on Prototheca species isolates from bovine mastitisAlgicidal activity of polypyrrole on Prototheca spp. Med Mycol 2021; 58:1114-1119. [PMID: 32364239 DOI: 10.1093/mmy/myaa021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 01/29/2020] [Revised: 03/12/2020] [Accepted: 03/23/2020] [Indexed: 11/14/2022] Open
Abstract
Algae of the genus Prototheca are microorganisms involved in the occurrence of diseases in humans and animals. In bovine species, Prototheca spp. cause environmental mastitis, productive losses in dairy herds, mainly leading to the discard of infected cows. Currently, there are no effective anti-Prototheca spp. drugs to combat this infection. Thus, the search for an efficacious therapy for Prototheca spp. infections have become essential. Highly soluble polypyrrole (Ppy) is a molecule with known antimicrobial activity. This study aimed to characterize Prototheca spp. isolates from bovine mastitis as well as to evaluate the susceptibility profile and to verify the morphological alterations on Prototheca spp. isolates treated with Ppy. In this research, 36 Brazilian isolates of Prototheca spp. were characterized by restriction fragment length polymorphism polymerase chain reaction (RFLP-PCR) assay for the mitochondrial cytB gene. Additionally, Ppy algicidal activity against these isolates of Prototheca spp. was assessed by minimal microbicidal concentration method in microplates. Further, scanning electron microscopy (SEM) was performed in order to verify the morphological alterations on Prototheca spp. isolates in response to Ppy. The isolates were characterized as belonging to Prototheca zopfii genotype 2 (35/36) and Prototheca blaschkeae (1/36). Ppy had an algicidal effect on all isolates tested at concentrations ranging from 15.625 μg ml-1 to 62.5 μg ml-1. SEM showed changes on planktonic and sessile P. zopfii, including a decrease of the number of cells with the presence of an amorphous substance involving the cells. The algicidal activity of Ppy suggests the therapeutic potential of this molecule in the prevention and treatment of Prototheca spp. in bovine mastitis.
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Affiliation(s)
- Valessa Lunkes Ely
- Postgraduate Program in Veterinary Medicine (PPGMV), Department of Preventive Veterinary Medicine (DMVP), Federal University of Santa Maria (UFSM). Av. Roraima, 1000, Prédio 44, Sala 5007, Bairro Camobi, Santa Maria, RS 97105-900, Brazil
| | - Mateus Matiuzzi da Costa
- Federal University of São Francisco Valley, Rodovia BR 407 - Km 12, Lote 543, Projeto Irrigação Senador Nilo Coelho s/n°, Petrolina, CEP 56300-990, Brazil
| | - Helinando Pequeno de Oliveira
- Federal University of São Francisco Valley, Rodovia BR 407 - Km 12, Lote 543, Projeto Irrigação Senador Nilo Coelho s/n°, Petrolina, CEP 56300-990, Brazil
| | - Fernando Antonio Gomes da Silva Júnior
- Federal University of São Francisco Valley, Rodovia BR 407 - Km 12, Lote 543, Projeto Irrigação Senador Nilo Coelho s/n°, Petrolina, CEP 56300-990, Brazil
| | - Daniela Isabel Brayer Pereira
- Departament of Microbiology and Parasitology, Instituto de Biologia, Federal University of Pelotas, Prédio 18, Sala 14. Campus Universitário Capão do Leão, s/n°, CEP 96160-000, Brazil
| | - Mauro Pereira Soares
- Faculty of Veterinary Medicine, Federal University of Pelotas, Campus Universitário Capão do Leão, s/n°, CEP 96160-000, Brazil
| | - Agueda Castagna de Vargas
- Postgraduate Program in Veterinary Medicine (PPGMV), Department of Preventive Veterinary Medicine (DMVP), Federal University of Santa Maria (UFSM). Av. Roraima, 1000, Prédio 44, Sala 5007, Bairro Camobi, Santa Maria, RS 97105-900, Brazil
| | - Luís Antônio Sangioni
- Postgraduate Program in Veterinary Medicine (PPGMV), Department of Preventive Veterinary Medicine (DMVP), Federal University of Santa Maria (UFSM). Av. Roraima, 1000, Prédio 44, Sala 5007, Bairro Camobi, Santa Maria, RS 97105-900, Brazil
| | - Juliana Felipetto Cargnelutti
- Postgraduate Program in Veterinary Medicine (PPGMV), Department of Preventive Veterinary Medicine (DMVP), Federal University of Santa Maria (UFSM). Av. Roraima, 1000, Prédio 44, Sala 5007, Bairro Camobi, Santa Maria, RS 97105-900, Brazil
| | - Márcio Garcia Ribeiro
- Department of Veterinary Hygiene and Public Health, São Paulo State University - UNESP, CEP 18618-681, Botucatu, Brazil
| | - Sônia de Avila Botton
- Postgraduate Program in Veterinary Medicine (PPGMV), Department of Preventive Veterinary Medicine (DMVP), Federal University of Santa Maria (UFSM). Av. Roraima, 1000, Prédio 44, Sala 5007, Bairro Camobi, Santa Maria, RS 97105-900, Brazil
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14
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Reginato CZ, D'ambroso Fernandes F, Sangioni LA, Vogel FSF. Efficiency of 5% toltrazuril in the metaphylactic treatment of coccidiosis in naturally infected and extensively reared beef calves. Trop Anim Health Prod 2021; 53:329. [PMID: 34002297 DOI: 10.1007/s11250-021-02770-8] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Accepted: 05/08/2021] [Indexed: 11/26/2022]
Abstract
Eimeria spp. infection is one of the main diseases that affect young cattle in beef and dairy herds, leading to economic losses and compromising the performance and growth of animals. This study aimed to evaluate the effectiveness of different protocols of metaphylactic treatment with 5% toltrazuril (15 mg/kg) in naturally infected, extensively reared beef calves from birth to 1 year of age. We used 92 calves aged up to 2 weeks of life, initially divided into two experimental groups: treated and control. The animals were evaluated fortnightly with individual count of oocysts per gram of feces (OPG) tests until weaning; thereafter, they were again divided into four subgroups: I-treated at both birth and weaning; II-treated at birth but not treated at weaning; III-not treated at birth but treated at weaning; and IV-neither treated at birth nor at weaning (control). During the experimental period, the animals were evaluated for weight gain, excretion of oocysts, and presence of pathogenic species of Eimeria spp. In the first stage of the study, less oocysts were excreted in the treated group for up to 75 days and at 150 days of age (p < 0.05). In the final stage of the study, significant differences occur between groups I and II, I and IV, II and III, and III and IV (p = 0.3512), in the collection 20 days after treatment. Eimeria bovis was the most frequently identified species during the experimental period. Moreover, there was a positive correlation between the presence of diarrhea in the calves and the number of oocysts excreted, treated group (p = 0.0092) and untreated group (p = 0.2). There was no significant difference in weight gain of animals in any of the study periods (p > 0.05).
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Affiliation(s)
- Caroline Zamperete Reginato
- Parasitic Disease Laboratory (LADOPAR), Department of Preventive Veterinary Medicine, Federal University of Santa Maria (UFSM), Av. Roraima, 1000, Prédio 63C, 97015-000, Camobi, Santa Maria, RS, Brazil
| | - Fagner D'ambroso Fernandes
- Parasitic Disease Laboratory (LADOPAR), Department of Preventive Veterinary Medicine, Federal University of Santa Maria (UFSM), Av. Roraima, 1000, Prédio 63C, 97015-000, Camobi, Santa Maria, RS, Brazil.
| | - Luís Antônio Sangioni
- Parasitic Disease Laboratory (LADOPAR), Department of Preventive Veterinary Medicine, Federal University of Santa Maria (UFSM), Av. Roraima, 1000, Prédio 63C, 97015-000, Camobi, Santa Maria, RS, Brazil
| | - Fernanda Silveira Flores Vogel
- Parasitic Disease Laboratory (LADOPAR), Department of Preventive Veterinary Medicine, Federal University of Santa Maria (UFSM), Av. Roraima, 1000, Prédio 63C, 97015-000, Camobi, Santa Maria, RS, Brazil
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15
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Flores AG, Osmari V, Ramos F, Marques CB, Ramos DJ, Botton SDA, Vogel FSF, Sangioni LA. Multiple resistance in equine cyathostomins: a case study from military establishments in Rio Grande do Sul, Brazil. ACTA ACUST UNITED AC 2020; 29:e003820. [PMID: 33027421 DOI: 10.1590/s1984-29612020086] [Citation(s) in RCA: 4] [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: 03/03/2020] [Accepted: 08/18/2020] [Indexed: 11/22/2022]
Abstract
Semi-intensive equine breeding system favors gastrointestinal nematode infections. The treatment of these infections is based on the use of anthelmintics. However, the inappropriate use of these drugs has led to parasitic resistance to the available active principles. The objective of this study was to evaluate the efficacy of the main classes of antiparasitic (ATP) used in control in adult and young animals, including: benzimidazoles (fenbendazole), pyrimidines (pyrantel pamoate), macrocyclic lactones (ivermectin and moxidectin), as well as the combination of active ingredients (ivermectin + pyrantel pamoate). The study was carried out in two military establishments, located in Rio Grande do Sul (RS), from January to December, 2018. The intervals between the treatments of the animals were performed from 30 to 90 days. Coproparasitological evaluations were determined by the egg count reduction in the faeces. Cyatostomine larvae were identified in pre and post-treatment cultures. The results demonstrated the multiple parasitic resistance of cyathostomins to fenbendazole, moxidectin in young animals, and to fenbendazole, pyrantel pamoate in adult animals. Thus, it is necessary to define or diagnose parasitic resistance to assist in the creation of prophylactic parasitic control, using suppressive treatment with ATP associated with integrated alternatives. The progress of parasitic resistance can be slowed.
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Affiliation(s)
- Alexandra Geyer Flores
- Departamento de Medicina Veterinária Preventiva - DMVP, Centro de Ciências Rurais - CCR, Universidade Federal de Santa Maria - UFSM, Santa Maria, RS, Brasil
| | - Vanessa Osmari
- Departamento de Medicina Veterinária Preventiva - DMVP, Centro de Ciências Rurais - CCR, Universidade Federal de Santa Maria - UFSM, Santa Maria, RS, Brasil
| | - Fernanda Ramos
- Departamento de Medicina Veterinária Preventiva - DMVP, Centro de Ciências Rurais - CCR, Universidade Federal de Santa Maria - UFSM, Santa Maria, RS, Brasil
| | - Camila Balconi Marques
- Departamento de Medicina Veterinária Preventiva - DMVP, Centro de Ciências Rurais - CCR, Universidade Federal de Santa Maria - UFSM, Santa Maria, RS, Brasil
| | - Denise Jaques Ramos
- Departamento de Medicina Veterinária Preventiva - DMVP, Centro de Ciências Rurais - CCR, Universidade Federal de Santa Maria - UFSM, Santa Maria, RS, Brasil
| | - Sônia de Avila Botton
- Departamento de Medicina Veterinária Preventiva - DMVP, Centro de Ciências Rurais - CCR, Universidade Federal de Santa Maria - UFSM, Santa Maria, RS, Brasil
| | - Fernanda Silveira Flores Vogel
- Departamento de Medicina Veterinária Preventiva - DMVP, Centro de Ciências Rurais - CCR, Universidade Federal de Santa Maria - UFSM, Santa Maria, RS, Brasil
| | - Luís Antônio Sangioni
- Departamento de Medicina Veterinária Preventiva - DMVP, Centro de Ciências Rurais - CCR, Universidade Federal de Santa Maria - UFSM, Santa Maria, RS, Brasil.,Laboratório de Doenças Parasitárias, Departamento de Medicina Veterinária Preventiva, Centro de Ciências Rurais, Universidade Federal de Santa Maria - UFSM, Santa Maria, RS, Brasil
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16
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Marques CB, Ramos F, Fernandes F, Sangioni LA, Kommers G, Unterleider CE, Flores Vogel FS. In vitro and in vivo acaricidal activity evaluation of organo-modified siloxanes in populations of Rhipicephalus microplus. Vet Parasitol 2019; 269:53-56. [PMID: 31079828 DOI: 10.1016/j.vetpar.2019.04.013] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Revised: 04/22/2019] [Accepted: 04/27/2019] [Indexed: 10/26/2022]
Abstract
Infestations of Rhipicephalus microplus cause significant damage to cattle breeding and their control is primarily based on chemical products. There are extensive reports of efficacy losses of acaricid products over time, as well as resistance of the parasites to them, thereby making it necessary to search for new alternatives. The present work aimed to determine the in vitro and in vivo acaricidal activity of organo-modified siloxanes with and without piperonyl butoxide (PBO) in southern Brazil. For the in vitro test, engorged females of R. microplus were collected and submitted to the immersion test. The formulation containing organo-modified siloxanes was tested at 4 different concentrations: 0.6, 1.0, 2.5, and 5.0%. The lowest dilutions (0.6, 1.0, and 2.5%) were also tested with the inclusion of 10% PBO. The in vivo test was performed by applying 2.5% organo-modified siloxanes, and the addition of 10% PBO was applied by spraying. The results showed high acaricidal activity (100%) in vitro in the concentration of 5% on non-associated forms, and in combinations of concentrations of 0.6, 1.0, 2.5% with PBO. The in vivo results also increased the efficacy with the association of PBO. In view of the current multi-resistance scenario of the R. microplus tick to the different commercially available acaricidal products, this study investigated the use of this product in association with PBO as an alternative to R. microplus control and found positive results. To the authors' knowledge, this is the first study to use organo-modified siloxanes against ticks.
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Affiliation(s)
- Camila Balconi Marques
- Laboratório de Doenças Parasitárias (Ladopar), Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria (UFSM), Av. Roraima 1000, prédio 44, sala 5139, 97105-900 Santa Maria, RS, Brazil.
| | - Fernanda Ramos
- Laboratório de Doenças Parasitárias (Ladopar), Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria (UFSM), Av. Roraima 1000, prédio 44, sala 5139, 97105-900 Santa Maria, RS, Brazil
| | - Fagner Fernandes
- Laboratório de Doenças Parasitárias (Ladopar), Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria (UFSM), Av. Roraima 1000, prédio 44, sala 5139, 97105-900 Santa Maria, RS, Brazil
| | - Luís Antônio Sangioni
- Laboratório de Doenças Parasitárias (Ladopar), Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria (UFSM), Av. Roraima 1000, prédio 44, sala 5139, 97105-900 Santa Maria, RS, Brazil
| | - Gláucia Kommers
- Laboratório de Patologia Veterinária, Universidade Federal de Santa Maria (UFSM), Av. Roraima 1000, prédio 44, sala 5139, 97105-900 Santa Maria, RS, Brazil
| | | | - Fernanda Silveira Flores Vogel
- Laboratório de Doenças Parasitárias (Ladopar), Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria (UFSM), Av. Roraima 1000, prédio 44, sala 5139, 97105-900 Santa Maria, RS, Brazil
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17
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Ely VL, Vargas AC, Costa MM, Oliveira HP, Pötter L, Reghelin MA, Fernandes AW, Pereira DIB, Sangioni LA, Botton SA. Moraxella bovis, Moraxella ovis and Moraxella bovoculi: biofilm formation and lysozyme activity. J Appl Microbiol 2018; 126:369-376. [PMID: 30142702 DOI: 10.1111/jam.14086] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [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: 12/20/2017] [Revised: 07/03/2018] [Accepted: 08/07/2018] [Indexed: 11/28/2022]
Abstract
AIMS This study aimed to verify the formation of biofilms by Moraxella bovis, Moraxella ovis and Moraxella bovoculi isolates from ruminants. In addition, the lysozyme activity against the isolates of M. bovis, M. ovis and M. bovoculi in free form and in biofilms was determined. METHODS AND RESULTS In this study, 54 isolates of Moraxella sp. obtained from bovine and ovine clinical samples were evaluated in vitro for capacity of biofilm formation and lysozyme susceptibility in planktonic and sessile cells. In addition, biofilms produced by four Moraxella sp. isolates were visualized under scanning electron microscope (SEM). It was possible to demonstrate, for the first time, the ability to form biofilms by M. ovis and M. bovoculi. The isolates of Moraxella sp. have the capacity to form biofilms in different intensities, varying among weak, moderate and strong. It was verified that the lysozyme shows activity on Moraxella sp. in planktonic form. However, on biofilms there was a reduction in the production, but without impairing its formation, and on consolidated biofilms the lysozyme did not have the capacity to eradicate the preformed biofilms. CONCLUSIONS This work shows the capacity of biofilm formation by Moraxella sp. of veterinary importance. The lysozyme susceptibility of Moraxella sp. in planktonic form shows that this enzyme has bacteriostatic activity on this micro-organism and it reduced the production of biofilms. SIGNIFICANCE AND IMPACT OF THE STUDY Based on the results, it is possible to infer that the biofilm formation capacity by Moraxella sp. and the resistance to lysozyme concentrations equal to or greater than the physiological levels of the ruminant tear may be linked not only to the capacity to colonize the conjunctiva, but also to remain in this place even after healing of the lesions, being a reservoir of Moraxella sp. in a herd.
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Affiliation(s)
- V L Ely
- Departamento de Medicina Veterinária Preventiva, Centro de Ciências Rurais, Programa de Pós-graduação em Medicina Veterinária, Universidade Federal de Santa Maria, Santa Maria, Brazil
| | - A C Vargas
- Departamento de Medicina Veterinária Preventiva, Centro de Ciências Rurais, Programa de Pós-graduação em Medicina Veterinária, Universidade Federal de Santa Maria, Santa Maria, Brazil
| | - M M Costa
- Universidade Federal do Vale do São Francisco, Petrolina, Brazil
| | - H P Oliveira
- Universidade Federal do Vale do São Francisco, Petrolina, Brazil
| | - L Pötter
- Departamento de Zootecnia, Centro de Ciências Rurais, Universidade Federal de Santa Maria, Santa Maria, Brazil
| | - M A Reghelin
- Departamento de Medicina Veterinária Preventiva, Centro de Ciências Rurais, Programa de Pós-graduação em Medicina Veterinária, Universidade Federal de Santa Maria, Santa Maria, Brazil
| | - A W Fernandes
- Universidade Federal do Vale do São Francisco, Petrolina, Brazil
| | - D I B Pereira
- Departamento de Microbiologia e Parasitologia, Instituto de Biologia, Universidade Federal de Pelotas, Pelotas, Brazil
| | - L A Sangioni
- Departamento de Medicina Veterinária Preventiva, Centro de Ciências Rurais, Programa de Pós-graduação em Medicina Veterinária, Universidade Federal de Santa Maria, Santa Maria, Brazil
| | - S A Botton
- Departamento de Medicina Veterinária Preventiva, Centro de Ciências Rurais, Programa de Pós-graduação em Medicina Veterinária, Universidade Federal de Santa Maria, Santa Maria, Brazil
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Ramos F, Portella LP, Rodrigues FDS, Reginato CZ, Pötter L, Cezar AS, Sangioni LA, Vogel FSF. Anthelmintic resistance in gastrointestinal nematodes of beef cattle in the state of Rio Grande do Sul, Brazil. Int J Parasitol Drugs Drug Resist 2016; 6:93-101. [PMID: 27054068 PMCID: PMC4805775 DOI: 10.1016/j.ijpddr.2016.02.002] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Revised: 02/01/2016] [Accepted: 02/05/2016] [Indexed: 01/27/2023]
Abstract
Gastrointestinal nematodes resistant to anthelmintics have been reported in several regions of Brazil, and they may be associated with economic losses for the cattle industry. This study aimed to evaluate the resistance status of gastrointestinal nematodes from naturally infected beef cattle to several commercially available anthelmintics, as well as to test the efficacy of combinations of anthelmintics against multi-resistant gastrointestinal nematodes. Ten farms located in Rio Grande do Sul state were selected by: farmers' consent; extensive raising system; availability of calves aged from 7 to 9 months naturally infected by gastrointestinal nematodes; absence of anthelmintic treatment for 60 days before the study; and presence of 70-100 calves or more of both genders with ≥ 200 eggs per gram of feces (EPG) (sensitivity of 50 EPG). These calves were distributed into 10 groups (of 7-10 animals) per farm and treated with ivermectin, doramectin, eprinomectin, fenbendazole, closantel, nitroxynil, disophenol, levamisole, albendazole, or moxidectin. Feces were collected 2 days before treatment and 14 days after treatment. Additional groups of 7-10 calves were used to test six different two-drug combinations at four of the studied farms. In general terms, fenbendazole was the most effective drug, followed by levamisole, disophenol, and moxidectin. However, parasite resistance to multiple drugs was found in all herds, especially in the genera Cooperia spp., Trichostrongylus spp., and Haemonchus spp.. Some of the two-drug combinations were effective against nematode populations identified as resistant to the same compounds when used as single drugs. The most effective combinations were moxidectin + levamisole, doramectin + fenbendazole, and levamisole + closantel. In this study, parasites resistant to the main commercially available anthelmintics were found in all herds, and some combinations of two active components belonging to different chemical groups were effective against multi-drug resistant gastrointestinal nematodes.
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Affiliation(s)
- Fernanda Ramos
- Departamento de Medicina Veterinária Preventiva (DMVP), Centro de Ciências Rurais (CCR), Universidade Federal de Santa Maria (UFSM), 97105-900, Santa Maria, RS, Brazil.
| | - Luiza Pires Portella
- Departamento de Medicina Veterinária Preventiva (DMVP), Centro de Ciências Rurais (CCR), Universidade Federal de Santa Maria (UFSM), 97105-900, Santa Maria, RS, Brazil
| | - Fernando de Souza Rodrigues
- Departamento de Medicina Veterinária Preventiva (DMVP), Centro de Ciências Rurais (CCR), Universidade Federal de Santa Maria (UFSM), 97105-900, Santa Maria, RS, Brazil
| | - Caroline Zamperete Reginato
- Departamento de Medicina Veterinária Preventiva (DMVP), Centro de Ciências Rurais (CCR), Universidade Federal de Santa Maria (UFSM), 97105-900, Santa Maria, RS, Brazil
| | - Luciana Pötter
- Departamento de Zootecnia, UFSM, Santa Maria, RS, Brazil
| | - Alfredo Skrebsky Cezar
- Departamento de Medicina Veterinária Preventiva (DMVP), Centro de Ciências Rurais (CCR), Universidade Federal de Santa Maria (UFSM), 97105-900, Santa Maria, RS, Brazil; Programa de Pós-Graduação em Economia e Desenvolvimento, PNPD/CAPES, UFSM, Santa Maria, RS, Brazil
| | - Luís Antônio Sangioni
- Departamento de Medicina Veterinária Preventiva (DMVP), Centro de Ciências Rurais (CCR), Universidade Federal de Santa Maria (UFSM), 97105-900, Santa Maria, RS, Brazil
| | - Fernanda Silveira Flores Vogel
- Departamento de Medicina Veterinária Preventiva (DMVP), Centro de Ciências Rurais (CCR), Universidade Federal de Santa Maria (UFSM), 97105-900, Santa Maria, RS, Brazil
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Camillo G, Cadore GC, Ferreira MST, Braünig P, Maciel JF, Pivoto FL, Sangioni LA, Vogel FSF. Toxoplasma Gondii and Neospora Caninum Antibodies in Backyard Chickens in Rio Grande do Sul, Brazil. Rev Bras Cienc Avic 2015. [DOI: 10.1590/1516-635x1702263-265] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- G Camillo
- Universidade Federal de Santa Maria, Brazil
| | - GC Cadore
- Universidade Federal de Santa Maria, Brazil
| | | | - P Braünig
- Universidade Federal de Santa Maria, Brazil
| | - JF Maciel
- Universidade Federal de Santa Maria, Brazil
| | - FL Pivoto
- Universidade Federal de Santa Maria, Brazil
| | | | - FSF Vogel
- Universidade Federal de Santa Maria, Brazil
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Machado FA, Pivoto FL, Ferreira MST, Gregorio FDV, Vogel FSF, Sangioni LA. Rhipicephalus (Boophilus) microplus in the western-central region of Rio Grande do Sul, Brazil: multiresistant tick. Rev Bras Parasitol Vet 2014; 23:337-42. [DOI: 10.1590/s1984-29612014063] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2014] [Accepted: 06/27/2014] [Indexed: 11/22/2022]
Abstract
The aim of the present study was to assess the acaricide resistance of tick populations in the western-central region of Rio Grande do Sul (Brazil), which has not previously been reported. Fifty-four cattle farms were visited and specimens of Rhipicephalus (Boophilus) microplus were collected and subjected to the adult immersion test, using nine commercial acaricides in the amidine, pyrethroid and organophosphate groups. Climatic data, including monthly precipitation, were recorded. The results from the present study demonstrated that seven of the acaricides analyzed presented mean efficacy values of less than 95%, with large differences among the products tested. Nine of them exhibited satisfactory and unsatisfactory acaricide results on at least one farm. In conclusion, the farms located in the western-central region of Rio Grande do Sul, Brazil, exhibited populations of R. (Boophilus) microplus with variable degrees of susceptibility to different acaricides, thus suggesting that resistance to the active compounds exists. It is suggested that treatment protocols should be implemented at the beginning of winter and summer, using the acaricides that showed efficacy in the adult immersion test.
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Krawczak FDS, Labruna MB, Sangioni LA, Vogel FSF, Soares JF, Lopes STDA. Serological survey on Ehrlichia sp. among dogs in the central region of Rio Grande do Sul. Rev Bras Parasitol Vet 2012. [DOI: 10.1590/s1984-29612012005000001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A serological survey on Ehrlichia canis was conducted among dogs in the central area of the state of Rio Grande do Sul, where the tick Rhipicephalus sanguineus is a common parasite of dogs. Out of a total of 316 dogs attended at the veterinary teaching hospital in the municipality of Santa Maria, only 14 (4.43%) reacted positively to E. canis antigens in the indirect immunofluorescence assay, with the following endpoint titers: 80 (three dogs), 160 (five), 320 (four), 640 (one) and 1280 (one). Like in previous studies in other regions of the state of Rio Grande do Sul, only a very small portion of the dogs in Santa Maria presented antibodies reactive to E. canis, even though canine infestations due to R. sanguineus are very common in this study region. These results contrast with other regions of Brazil, where E. canis is endemic among canine populations, with seropositivity values generally higher than 30%. Genetic differences among the R. sanguineus populations in South America might be implicated in these contrasting results.
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Toscan G, Cezar AS, Pereira RCF, Silva GB, Sangioni LA, Oliveira LSS, Vogel FSF. Comparative performance of macrocyclic lactones against large strongyles in horses. Parasitol Int 2012; 61:550-3. [PMID: 22580448 DOI: 10.1016/j.parint.2012.05.001] [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] [Received: 08/08/2011] [Revised: 04/19/2012] [Accepted: 05/02/2012] [Indexed: 11/26/2022]
Abstract
Several formulations of macrocyclic lactones (abamectin, ivermectin, moxidectin), including ivermectin combined with pyrantel (tetrahydropyrimidine) and ivermectin combined with praziquantel (pyrazinoisoquinolin derivative), were tested regarding their efficacy to control gastrointestinal nematodes of horses on a stud farm in southern Brazil. In addition, we tested a pharmaceutically produced generic paste containing ivermectin 4%. Similar formulations of avermectins had different efficacies measured by reduction of EPG. Levels of efficacy of the tested drugs varied against Strongylus edentatus, S. equinus and S. vulgaris. The generic paste (ivermectin 4%) was less effective than the conventional drugs.
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Affiliation(s)
- G Toscan
- Depto. de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria (UFSM), Av. Roraima 1000, Prédio 44, 97105-900, Santa Maria, RS, Brazil
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Cezar AS, Ribas HO, Pivoto FL, Sangioni LA, Vogel FSF. Combinação de drogas antiparasitárias como uma alternativa para o controle de nematódeos gastrintestinais multirresistentes em ovinos. Pesq Vet Bras 2011. [DOI: 10.1590/s0100-736x2011000200010] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Este estudo foi realizado com o objetivo de encontrarem-se tratamentos anti-helmínticos eficazes sobre uma população de nematódeos gastrintestinais de ovinos, a qual desenvolveu resistência a todas as classes de drogas com ação nematicida disponíveis para ruminantes no mercado brasileiro. Valendo-se da eficácia calculada de tratamentos convencionais a partir de um estudo prévio e, assim, conhecendo-se sua ação sobre diferentes gêneros de nematódeos presentes no rebanho, selecionaram-se drogas as quais, utilizadas em combinações ou em altas doses, pudessem aumentar significativamente a eficácia dos tratamentos. Utilizou-se o percentual de redução da contagem de ovos nas fezes e as culturas de larvas para avaliar a ação anti-helmíntica dos tratamentos testados. A combinação de moxidectina 1% + disofenol 20% apresentou 99% de eficácia, e as combinações de moxidectina 1% + triclorfon 10% e de moxidectina 1% + fosfato de levamisol 22,3% superaram os 90% de eficácia. A utilização de combinações de princípios ativos, com diferentes mecanismos de ação, pode promover a recuperação da eficácia dos tratamentos anti-helmínticos sobre populações multirresistentes de nematódeos gastrintestinais de ovinos.
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Cezar AS, Toscan G, Camillo G, Sangioni LA, Ribas HO, Vogel FSF. Multiple resistance of gastrointestinal nematodes to nine different drugs in a sheep flock in southern Brazil. Vet Parasitol 2010; 173:157-60. [DOI: 10.1016/j.vetpar.2010.06.013] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2009] [Revised: 04/13/2010] [Accepted: 06/08/2010] [Indexed: 10/19/2022]
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Cezar AS, Vogel FS, Sangioni LA, Antonello AM, Camillo G, Toscan G, Araujo LOD. Ação anti-helmíntica de diferentes formulações de lactonas macrocíclicas em cepas resistentes de nematódeos de bovinos. Pesq Vet Bras 2010. [DOI: 10.1590/s0100-736x2010000700002] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
As lactonas macrocíclicas (LMs) (avermectinas e milbemicinas) são endectocidas amplamente utilizados em animais e em algumas parasitoses humanas. Em bovinos, a resistência parasitária às LMs é emergente, e o surgimento de formulações que diferem nas suas propriedades farmacológicas tornou complexa a escolha da droga mais indicada a cada caso. Com o objetivo de avaliar possíveis alternativas para recuperar a eficácia de LMs sobre cepas resistentes de nematódeos gastrintestinais, testaram-se, neste estudo, dez diferentes tratamentos a base de LMs sobre uma população de nematódeos gastrintestinais de bovinos a qual, sabidamente, sofrera pressão de seleção por avermectinas a 1%. Adicionalmente, testou-se um benzimidazol. A eficácia das drogas foi calculada com base na redução de ovos por grama de fezes (OPG) dos bovinos. A resistência de cada gênero foi avaliada por meio de identificação de larvas, obtidas de cultivos nas fezes, pré- e pós-tratamentos. Não se obteve a eficácia desejada com o emprego de avermectinas de longa ação - com alta concentração e em associação - ou mesmo, com a aplicação de superdoses. Os gêneros Cooperia spp., Haemonchus spp. e Trichostrongylus spp. foram resistentes às avermectinas, e Ostertagia spp. à ivermectina. Observou-se que, uma vez estabelecida a resistência parasitária a LMs a 1%, a aplicação de fármacos, deste mesmo grupo químico, ainda que em formulações mais concentradas, asso-ciações ou superdoses, pode não resultar na eficácia esperada.
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