1
|
da Rosa G, de Freitas Daudt G, Roman IJ, Cargnelutti JF, Sangioni LA, Flores MM, Vogel FSF. Sarcocystis in horses from Rio Grande do Sul, Brazil: Molecular identification of Sarcocystis bertrami and Sarcocystis neurona in muscle tissues. Vet Parasitol Reg Stud Reports 2024; 47:100973. [PMID: 38199686 DOI: 10.1016/j.vprsr.2023.100973] [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: 08/22/2023] [Revised: 11/01/2023] [Accepted: 12/05/2023] [Indexed: 01/12/2024]
Abstract
Horses are intermediate hosts of Sarcocystis spp. capable of forming cysts in their musculature. This study aimed to detect sarcocysts and investigate the presence of nucleic acids from Sarcocystis spp. in samples of striated muscles from horses in the State of Rio Grande do Sul, Brazil, necropsied at the Veterinary Pathology Laboratory of the Federal University of Santa Maria. A total of 108 samples were collected from 24 horses and examined through direct examination. Microscopic tissue cysts were observed in three samples: tongue (2) and esophagus (1) from two animals. Extractions were performed on the found cysts and tissues, even though sarcocystosis detection was not present. DNA samples were subjected to Nested-PCR using Tg18s primers, and the amplified products were subjected to Restriction Fragment Length Polymorphism (RFLP) using DdeI and HpaII enzymes. DNA belonging to Sarcocystis spp. was amplified in tissues from 91.7% (22/24) of the equines, and 67.6% (73/108) of the samples tested positive in the Nested-PCR reaction. The tissues with the highest detection frequency were: diaphragm 92.3% (12/13), gluteal muscle 77.2% (17/22), and esophagus 66.7% (4/6). In RFLP, Sarcocystis spp. was detected in 21 tissues from 11/22 equines, and cysts, identified through nucleotide sequencing, were determined to be S. bertrami. S. neurona was identified in 11 samples from 7/22 animals, with co-infection detected in 5/22 cases. The high detection rate indicates a concerning circulation of the protozoan, particularly the zoonotic S. bertrami found in all tissues, which are commonly exported for human consumption.
Collapse
Affiliation(s)
- Gilneia da Rosa
- Laboratório de Doenças Parasitárias (LADOPAR), Departamento de Medicina Veterinária Preventiva, Centro de Ciências Rurais, Universidade Federal de Santa Maria, Av. Roraima, n° 1000, Prédio 63D, Bairro Camobi, Santa Maria, Rio Grande do Sul CEP 97105-900, Brazil.
| | - Gabriela de Freitas Daudt
- Laboratório de Doenças Parasitárias (LADOPAR), Departamento de Medicina Veterinária Preventiva, Centro de Ciências Rurais, Universidade Federal de Santa Maria, Av. Roraima, n° 1000, Prédio 63D, 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, Centro de Ciências Rurais, Universidade Federal de Santa Maria, Av. Roraima, n° 1000, Prédio 63D, Bairro Camobi, Santa Maria, Rio Grande do Sul CEP 97105-900, Brazil
| | - Juliana Felipetto Cargnelutti
- Laboratório de Bacteriologia (LABAC), Departamento de Medicina Veterinária Preventiva, Centro de Ciências Rurais, Universidade Federal de Santa Maria (UFSM), Av. Roraima, n° 1000, Prédio 63D, Bairro Camobi, Santa Maria, Rio Grande do Sul CEP 97105-900, Brazil
| | - Luis Antonio Sangioni
- Laboratório de Doenças Parasitárias (LADOPAR), Departamento de Medicina Veterinária Preventiva, Centro de Ciências Rurais, Universidade Federal de Santa Maria, Av. Roraima, n° 1000, Prédio 63D, Bairro Camobi, Santa Maria, Rio Grande do Sul CEP 97105-900, Brazil.
| | - Mariana Martins Flores
- Laboratório de Patologia Veterinária (LPV), Departamento de Patologia, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul CEP 97105-900, Brazil.
| | - Fernanda Silveira Flôres Vogel
- Laboratório de Doenças Parasitárias (LADOPAR), Departamento de Medicina Veterinária Preventiva, Centro de Ciências Rurais, Universidade Federal de Santa Maria, Av. Roraima, n° 1000, Prédio 63D, Bairro Camobi, Santa Maria, Rio Grande do Sul CEP 97105-900, Brazil.
| |
Collapse
|
2
|
Fernandes FD, Samoel GVA, Guerra RR, Bräunig P, Machado DWN, Cargnelutti JF, Sangioni LA, Vogel FSF. Five years of the biggest outbreak of human toxoplasmosis in Santa Maria, Brazil: a review. Parasitol Res 2023; 123:76. [PMID: 38156993 DOI: 10.1007/s00436-023-08073-1] [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: 09/02/2023] [Accepted: 10/18/2023] [Indexed: 01/03/2024]
Abstract
Toxoplasmosis is a parasitic disease caused by infection with the protozoan Toxoplasma gondii. In 2018, the first cases of people with clinical signs of acute febrile syndrome were reported, and in the same year, the largest outbreak of human toxoplasmosis ever described in the literature was reported. In this sense, the present work sought to describe the evolution of the outbreak cases in the municipality of Santa Maria, Rio Grande do Sul State, Brazil, as well as the studies conducted and published during and after the outbreak in the municipality (the period between 2018 and 2023). In addition, the discussion of public policies and their modifications after the notification of this outbreak. As a result of this research, verifying the evolution of notified and confirmed cases, the possibility of detection and genotypic characterization of T. gondii and the possibility of co-infections and evaluation of the humoral response is possible. With regard to public policies, the importance of detecting the agent through the heel prick test and increasing the monitoring of water quality to prevent outbreaks.
Collapse
Affiliation(s)
- Fagner D'ambroso Fernandes
- Laboratório de Doenças Parasitárias (LADOPAR), Departamento de Medicina Veterinária Preventiva, Centro de Ciências Rurais (CCR), Universidade Federal de Santa (UFSM), Av Roraima, N° 1000, Prédio 63D, Bairro Camobi, Santa Maria, RS, CEP 97105-900, Brazil.
- Centro Universitario Ritter dos Reis (UniRitter), Av Manoel Elias, 2001 - Passo das Pedras, Porto Alegre, RS, 91240-261, Brazil.
| | - Gisele Vaz Aguirre Samoel
- Laboratório de Doenças Parasitárias (LADOPAR), Departamento de Medicina Veterinária Preventiva, Centro de Ciências Rurais (CCR), Universidade Federal de Santa (UFSM), Av Roraima, N° 1000, Prédio 63D, Bairro Camobi, Santa Maria, RS, CEP 97105-900, Brazil
| | - Renata Rojas Guerra
- Departamento de Estatística, Universidade Federal de Santa Maria (UFSM), Av Roraima, N° 1000, Prédio 13, Sala 1206, Bairro Camobi, CEP, Santa Maria, RS, 97105-900, Brazil
| | - Patricia Bräunig
- Laboratório de Doenças Parasitárias (LADOPAR), Departamento de Medicina Veterinária Preventiva, Centro de Ciências Rurais (CCR), Universidade Federal de Santa (UFSM), Av Roraima, N° 1000, Prédio 63D, Bairro Camobi, Santa Maria, RS, CEP 97105-900, Brazil
| | - Diego Willian Nascimento Machado
- Curso de Arquitetura e Urbanismo (CAU-ULBRA), Universidade Luterana do Brasil (ULBRA), Av. Farroupilha, n°8001, Prédio 14, Bairro São José, Canoas, RS, CEP 92425-900, Brazil
| | - Juliana Felipetto Cargnelutti
- Laboratório de Bacteriologia (LABAC), 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 97105-900, Brazil
| | - Luis Antonio Sangioni
- Laboratório de Doenças Parasitárias (LADOPAR), Departamento de Medicina Veterinária Preventiva, Centro de Ciências Rurais (CCR), Universidade Federal de Santa (UFSM), Av Roraima, N° 1000, Prédio 63D, Bairro Camobi, Santa Maria, RS, 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 (UFSM), Av Roraima, N° 1000, Prédio 63D, Bairro Camobi, Santa Maria, RS, CEP 97105-900, Brazil
| |
Collapse
|
3
|
Fernandes FD, Tagarra LG, Roman IJ, Moraes DADO, Rodrigues D, de Andrade CM, Bräunig P, de Oliveira-Filho EF, Cargnelutti JF, Sangioni LA, Vogel FSF. Increased frequency of detection of anti-Toxoplasma gondii antibodies in domestic cats after outbreak of human toxoplasmosis. Parasitol Res 2023; 123:73. [PMID: 38150060 DOI: 10.1007/s00436-023-08092-y] [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: 10/23/2023] [Accepted: 12/11/2023] [Indexed: 12/28/2023]
Abstract
Toxoplasmosis affects various organisms, including humans. In 2018, the largest outbreak of human toxoplasmosis described so far was reported in southern Brazil, with 809 human cases reported, and water as the potentially primary source of infection. Therefore, in this study, we aimed to evaluate the seroprevalence of Toxoplasma gondii in naturally infected domestic cats before and after the human toxoplasmosis outbreak, as well as the potential for environmental contamination by the number of cats infected after the outbreak. We evaluated 381 serum samples from domestic cats in southern Brazil, using an indirect immunofluorescence assay, with samples considered positive at a titer of 1:20. We found that 73% (204/279) and 27% (75/279) of the samples analyzed before the outbreak were negative and positive, respectively. After the outbreak, 62% (69/112) were negative of the samples were and 38% (43/112) were positive. Notably, the proportion of positive samples before the outbreak before (27%) was significantly lower than that after the outbreak (38%; P = 0.020). Therefore, the increased seroprevalence of T. gondii in cats was probably correlated with the ingestion of contaminated water. Therefore, it is important to monitor animals, mainly definitive hosts, after toxoplasmosis outbreaks, considering that these animals can contaminate the environment and, consequently, humans.
Collapse
Affiliation(s)
- 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, nº1000, Prédio 63D, Bairro Camobi, 97105-900, Santa Maria, Rio Grande do Sul, Brasil.
- Centro Universitário Ritter Dos Reis (UniRitter), Av. Manoel Elias, nº 2001, Bairro Passo das Pedras, 91240-261, Porto Alegre, Rio Grande do Sul, Brasil.
| | - Larissa Godoy Tagarra
- Laboratório de Doenças Parasitárias (LADOPAR), Departamento de Medicina Veterinária Preventiva (DMVP), Centro de Ciências Rurais (CCR), Universidade Federal de Santa Maria (UFSM), Av. Roraima, nº1000, Prédio 63D, Bairro Camobi, 97105-900, Santa Maria, Rio Grande do Sul, Brasil
| | - 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, nº1000, Prédio 63D, Bairro Camobi, 97105-900, Santa Maria, Rio Grande do Sul, Brasil
| | - Denis Altieri de Oliveira Moraes
- Departamento de Estatística (DE), Centro de Ciências Naturais e Exatas (CCNE), Universidade Federal de Santa Maria (UFSM), Av. Roraima, nº1000, Prédio 13, Sala 1208, Bairro Camobi, 97105-900, Santa Maria, Rio Grande do Sul, Brasil
| | - Daniele Rodrigues
- Laboratório de Análises Clínicas Veterinária (LACVET), Centro de Ciências Rurais (CCR), Hospital Veterinário Universitário (HVU), Universidade Federal de Santa Maria (UFSM), Av. Roraima, nº1000, Prédio 97, Bairro Camobi, 97105-900, Santa Maria, Rio Grande do Sul, Brasil
| | - Cinthia Melazzo de Andrade
- Laboratório de Análises Clínicas Veterinária (LACVET), Centro de Ciências Rurais (CCR), Hospital Veterinário Universitário (HVU), Universidade Federal de Santa Maria (UFSM), Av. Roraima, nº1000, Prédio 97, Bairro Camobi, 97105-900, Santa Maria, Rio Grande do Sul, Brasil
- Departamento de Clínica de Pequenos Animais (DCPA), Centro de Ciências Rurais (CCR), Universidade Federal de Santa Maria (UFSM), Av. Roraima, nº1000, Prédio 97, Bairro Camobi, 97105-900, Santa Maria-RS, Rio Grande do Sul, Brasil
| | - Patricia Bräunig
- Laboratório de Doenças Parasitárias (LADOPAR), Departamento de Medicina Veterinária Preventiva (DMVP), Centro de Ciências Rurais (CCR), Universidade Federal de Santa Maria (UFSM), Av. Roraima, nº1000, Prédio 63D, Bairro Camobi, 97105-900, Santa Maria, Rio Grande do Sul, Brasil
| | | | - 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, nº1000, Prédio 63D, Bairro Camobi, 97105-900, Santa Maria, Rio Grande do Sul, Brasil
| | - Luis Antonio 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, nº1000, Prédio 63D, Bairro Camobi, 97105-900, Santa Maria, Rio Grande do Sul, Brasil
| | - 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, nº1000, Prédio 63D, Bairro Camobi, 97105-900, Santa Maria, Rio Grande do Sul, Brasil
| |
Collapse
|
4
|
Mortari APG, Tagarra LG, de Souza ML, Roman IJ, Ratzlaff FR, Braunig P, de Andrade CM, Cargnelutti JF, Sangioni LA, Vogel FSF. Increased seroprevalence of anti-Toxoplasma gondii antibodies in dogs in southern Brazil after an outbreak of human toxoplasmosis. Parasitol Res 2023; 122:1009-1014. [PMID: 36881160 DOI: 10.1007/s00436-023-07808-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [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: 01/02/2023] [Accepted: 03/01/2023] [Indexed: 03/08/2023]
Abstract
Toxoplasmosis is a worldwide disease caused by Toxoplasma gondii, which can infect diverse hosts, including dogs. Although T. gondii infection in dogs is usually subclinical, they are susceptible to infection and develop a specific immune response to the parasite. In 2018, the largest outbreak of human toxoplasmosis in the world occurred in Santa Maria, in southern Brazil; however, the impact of this outbreak on other hosts was not investigated at the time. Considering that dogs often share the same environmental sources of infection as humans, mainly water sources, and that in Brazil, the detection rates of anti-T. gondii immunoglobulin G (IgG) in dogs is very high, this study investigated the frequency of anti-T. gondii IgG in dogs in Santa Maria before and after the outbreak. A total of 2.245 serum samples were analyzed, 1159 collected before the outbreak and 1086 collected after the outbreak. Serum samples were tested for anti-T. gondii antibodies using an indirect immunofluorescence antibody test (IFAT). The infection detection of T. gondii was 16% (185/1159) before the outbreak and 43% (466/1086) after the outbreak. These results showed the infection of dogs with T. gondii and the high frequency of anti-T. gondii antibodies in dogs after the outbreak in humans in 2018, reinforcing water as a possible source of infection and the importance of including toxoplasmosis in the differential diagnosis of dogs.
Collapse
Affiliation(s)
- Ana Paula Gnocato Mortari
- Laboratório de Doenças Parasitárias (LADOPAR), Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria, Av. Roraima, 1000, Prédio 63D, Santa Maria, Rio Grande Do Sul, 97105-900, Brazil
| | - Larissa Godoy Tagarra
- Laboratório de Doenças Parasitárias (LADOPAR), Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria, Av. Roraima, 1000, Prédio 63D, Santa Maria, Rio Grande Do Sul, 97105-900, Brazil
| | - Michelli Lopes de Souza
- Laboratório de Doenças Parasitárias (LADOPAR), Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria, Av. Roraima, 1000, Prédio 63D, Santa Maria, Rio Grande Do Sul, 97105-900, Brazil
| | - Isac Junior Roman
- Laboratório de Doenças Parasitárias (LADOPAR), Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria, Av. Roraima, 1000, Prédio 63D, Santa Maria, Rio Grande Do Sul, 97105-900, Brazil
| | - Fabiana Raquel Ratzlaff
- Laboratório de Doenças Parasitárias (LADOPAR), Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria, Av. Roraima, 1000, Prédio 63D, Santa Maria, Rio Grande Do Sul, 97105-900, Brazil
| | - Patricia Braunig
- Laboratório de Doenças Parasitárias (LADOPAR), Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria, Av. Roraima, 1000, Prédio 63D, Santa Maria, Rio Grande Do Sul, 97105-900, Brazil
| | - Cínthia Melazzo de Andrade
- Laboratório Clínico Veterinário (LCV), Departamento de Clínica de Pequenos Animais, Universidade Federal de Santa Maria, Av. Roraima, 1000, Hospital Veterinário, Santa Maria, Rio Grande Do Sul, 97105-900, Brazil
| | - Juliana Felipetto Cargnelutti
- Laboratório de Bacteriologia (LABAC), Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria, Av. Roraima, 1000, Prédio 63D, Santa Maria, Rio Grande Do Sul, 97105-900, Brazil
| | - Luis Antonio Sangioni
- Laboratório de Doenças Parasitárias (LADOPAR), Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria, Av. Roraima, 1000, Prédio 63D, Santa Maria, Rio Grande Do Sul, 97105-900, Brazil
| | - Fernanda Silveira Flôres Vogel
- Laboratório de Doenças Parasitárias (LADOPAR), Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria, Av. Roraima, 1000, Prédio 63D, Santa Maria, Rio Grande Do Sul, 97105-900, Brazil.
| |
Collapse
|
5
|
Sobotyk C, Baldissera FG, Rodrigues Junior LC, Romão PRT, de Oliveira JS, Dornelles GL, de Andrade CM, Maciel RM, Danesi CC, de Padua Ferreira RV, Bellini MH, de Avila Botton S, Vogel FSF, Sangioni LA. Zinc and Manganese Imbalances in BALB/c Mice Experimentally Infected with Leishmania (Leishmania) amazonensis. Acta Parasitol 2023:10.1007/s11686-023-00666-1. [PMID: 36884141 DOI: 10.1007/s11686-023-00666-1] [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: 02/24/2022] [Accepted: 01/26/2023] [Indexed: 03/09/2023]
Abstract
PURPOSE The clinical progression of Leishmania (Leishmania) amazonensis infection depends on multiple factors, including immunological status of the host and their genotypic interaction. Several immunological processes depend directly on minerals for an efficient performance. Therefore, this study used an experimental model to investigate the alterations of trace metals in L. amazonensis infection associate with clinical outcome, parasite load, and histopathological lesions, and the effect of CD4 + T cells depletion on these parameters. METHODS A total of 28 BALB/c mice were divided into 4 groups: 1-non-infected; 2-treated with anti-CD4 antibody; 3-infected with L. amazonensis; and 4-treated with anti-CD4 antibody and infected with L. amazonensis. After 24 weeks post-infection, levels of calcium (Ca), iron (Fe), magnesium (Mg), manganese (Mn), Cu, and Zn were determined by inductively coupled plasma optical emission spectroscopy using tissue samples of the spleen, liver, and kidneys. Additionally, parasite burdens were determined in the infected footpad (inoculation site) and samples of inguinal lymph node, spleen, liver, and kidneys were submitted to histopathological analysis. RESULTS Despite no significant difference was observed between groups 3 and 4, L. amazonensis-infected mice had a significant reduction of Zn (65.68-68.32%) and Mn (65.98 to 82.17%) levels. Presence of L. amazonensis amastigotes was also detected in the inguinal lymph node, spleen, and liver samples in all infected animals. CONCLUSION The results showed that significant alterations in micro-elements levels occur in BALB/c mice experimentally infected with L. amazonensis and may increase the susceptibility of individuals to the infection.
Collapse
Affiliation(s)
- Caroline Sobotyk
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA. .,Departamento de Medicina Veterinária Preventiva, PPGMV, UFSM, Av. Roraima, 1000, Camobi, Santa Maria, RS, 97105900, Brazil.
| | - Fernanda Giesel Baldissera
- Departamento de Ciências Básicas da Saúde, Universidade Federal de Ciências da Saúde de Porto Alegre, Rua Sarmento Leite, 245, Porto Alegre, RS, 90050-170, Brazil
| | - Luiz Carlos Rodrigues Junior
- Departamento de Ciências Básicas da Saúde, Universidade Federal de Ciências da Saúde de Porto Alegre, Rua Sarmento Leite, 245, Porto Alegre, RS, 90050-170, Brazil
| | - Pedro Roosevelt Torres Romão
- Departamento de Ciências Básicas da Saúde, Universidade Federal de Ciências da Saúde de Porto Alegre, Rua Sarmento Leite, 245, Porto Alegre, RS, 90050-170, Brazil
| | - Juliana Sorraila de Oliveira
- Programa de Pós-graduação em Medicina Veterinária (PPGMV), Departamento de Clínica de Pequenos Animais, Universidade Federal de Santa (UFSM), Av. Roraima, 1000, Camobi, Santa Maria, RS, 97105900, Brazil
| | - Guilherme Lopes Dornelles
- Programa de Pós-graduação em Medicina Veterinária (PPGMV), Departamento de Clínica de Pequenos Animais, Universidade Federal de Santa (UFSM), Av. Roraima, 1000, Camobi, Santa Maria, RS, 97105900, Brazil
| | - Cinthia Melazzo de Andrade
- Programa de Pós-graduação em Medicina Veterinária (PPGMV), Departamento de Clínica de Pequenos Animais, Universidade Federal de Santa (UFSM), Av. Roraima, 1000, Camobi, Santa Maria, RS, 97105900, Brazil
| | - Roberto Marinho Maciel
- Departamento de Patologia, UFSM, Av. Roraima, 1000, Camobi, Santa Maria, RS, 97105900, Brazil
| | | | - Rafael Vicente de Padua Ferreira
- Laboratório de Biologia Celular e Molecular do Câncer, Centro de Biotecnologia, Instituto de Pesquisas Energéticas e Nucleares, Av. Professor Lineu Prestes, 2242, Cidade Universitária, Butantã, São Paulo, SP, 05508-000, Brazil
| | - Maria Helena Bellini
- Laboratório de Biologia Celular e Molecular do Câncer, Centro de Biotecnologia, Instituto de Pesquisas Energéticas e Nucleares, Av. Professor Lineu Prestes, 2242, Cidade Universitária, Butantã, São Paulo, SP, 05508-000, Brazil
| | - Sônia de Avila Botton
- Departamento de Medicina Veterinária Preventiva, PPGMV, UFSM, Av. Roraima, 1000, Camobi, Santa Maria, RS, 97105900, Brazil
| | - Fernanda Silveira Flores Vogel
- Departamento de Medicina Veterinária Preventiva, PPGMV, UFSM, Av. Roraima, 1000, Camobi, Santa Maria, RS, 97105900, Brazil
| | - Luis Antonio Sangioni
- Departamento de Medicina Veterinária Preventiva, PPGMV, UFSM, Av. Roraima, 1000, Camobi, Santa Maria, RS, 97105900, Brazil
| |
Collapse
|
6
|
Ely VL, Felipetto Cargnelutti J, Segabinazzi Ries A, Gressler LT, Costa S, Braz PH, Pötter L, Matiuzzi da Costa M, Gomes da Silva Júnior F, Pequeno de Oliveira H, Sangioni LA, Brayer Pereira DI, de Avila Botton S. Prototheca bovis in goats: Experimental mastitis and treatment with polypyrrole. Microb Pathog 2023; 174:105950. [PMID: 36528325 DOI: 10.1016/j.micpath.2022.105950] [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: 10/25/2022] [Revised: 12/13/2022] [Accepted: 12/14/2022] [Indexed: 12/23/2022]
Abstract
Prototheca bovis has been associated with several cases of mastitis in cattle but no record of intramammary infections has been reported in goats. This infection does not respond to available treatments and the disposal recommendation of affected animals cause great damage to the dairy industry. Alternatives for dealing with infections caused by Prototheca spp. are required worldwide. In vitro results suggest polypyrrole as promising molecule for combating this alga, because an algaecide effect was observed on tested Prototheca spp. isolates. Thus, this study evaluated goats as an experimental model for intramammary infection by P. bovis and a protocol for treating these animals with an intramammary polypyrrole solution. The possibility of P. bovis promoting an intramammary infection in goats was experimentally proven, demonstrating this species as an important model for studies involving algae mastitis. Furthermore, polypyrrole reduced the counts of Prototheca sp. in the analyzed samples, showing potential to fight this microorganism also in vivo. The results obtained in this study demonstrate the ability of P. bovis to colonize breast tissue in lactating goats and the highly soluble molecule of polypyrrole has potential use for the treatment of protothecosis.
Collapse
Affiliation(s)
- Valessa Lunkes Ely
- Programa de Pós-graduação em Medicina Veterinária, Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria, Av. Roraima, 1000, Prédio 44 (CCRII), Sala 5132, Bairro Camobi, Santa Maria, RS, 97105-900, Brazil
| | - Juliana Felipetto Cargnelutti
- Programa de Pós-graduação em Medicina Veterinária, Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria, Av. Roraima, 1000, Prédio 44 (CCRII), Sala 5132, Bairro Camobi, Santa Maria, RS, 97105-900, Brazil
| | - Ananda Segabinazzi Ries
- Programa de Pós-graduação em Medicina Veterinária, Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria, Av. Roraima, 1000, Prédio 44 (CCRII), Sala 5132, Bairro Camobi, Santa Maria, RS, 97105-900, Brazil
| | - Letícia Trevisan Gressler
- Instituto Federal Farroupilha, Campus Frederico Westphalen, Linha 7 de Setembro, BR 386 - KM 40 s/n, Frederico Westphalen, RS, 98400-000, Brazil
| | - Samay Costa
- Instituto Federal Farroupilha, Campus Frederico Westphalen, Linha 7 de Setembro, BR 386 - KM 40 s/n, Frederico Westphalen, RS, 98400-000, Brazil
| | - Paulo Henrique Braz
- Instituto Federal Farroupilha, Campus Frederico Westphalen, Linha 7 de Setembro, BR 386 - KM 40 s/n, Frederico Westphalen, RS, 98400-000, Brazil
| | - Luciana Pötter
- Programa de Pós-graduação em Zootecnia, Departamento de Zootecnia, Universidade Federal de Santa Maria, Av. Roraima, 1000, Prédio 44 (CCRII), Sala 5132, Bairro Camobi, Santa Maria, RS, 97105-900, Brazil
| | - Mateus Matiuzzi da Costa
- Universidade Federal do Vale do São Francisco, Rodovia BR 407 - Km 12, Lote 543, Projeto Irrigação Senador Nilo Coelho s/nº, Petrolina, CEP 56300-990, Brazil
| | - Fernando Gomes da Silva Júnior
- Universidade Federal do Vale do São Francisco, Rodovia BR 407 - Km 12, Lote 543, Projeto Irrigação Senador Nilo Coelho s/nº, Petrolina, CEP 56300-990, Brazil
| | - Helinando Pequeno de Oliveira
- Universidade Federal do Vale do São Francisco, Rodovia BR 407 - Km 12, Lote 543, Projeto Irrigação Senador Nilo Coelho s/nº, Petrolina, CEP 56300-990, Brazil
| | - Luis Antonio Sangioni
- Programa de Pós-graduação em Medicina Veterinária, Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria, Av. Roraima, 1000, Prédio 44 (CCRII), Sala 5132, Bairro Camobi, Santa Maria, RS, 97105-900, Brazil
| | - Daniela Isabel Brayer Pereira
- Universidade Federal de Pelotas (UFPel), Instituto de Biologia, Campus Capão do Leão s/n, Capão do Leão, RS, 96160-000, Brazil
| | - Sônia de Avila Botton
- Programa de Pós-graduação em Medicina Veterinária, Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria, Av. Roraima, 1000, Prédio 44 (CCRII), Sala 5132, Bairro Camobi, Santa Maria, RS, 97105-900, Brazil.
| |
Collapse
|
7
|
Espindola BD, Fernandes FD, Roman IJ, Samoel GVA, Barcelos RAD, Döhler AR, Botton SDÁ, Vogel FSF, Sangioni LA. Detection of Sarcocystis spp. and Toxoplasma gondii in swine and detection of DNA of these protozoa in tissues and sausages. Rev Bras Parasitol Vet 2022; 31:e009322. [PMID: 36074435 DOI: 10.1590/s1984-29612022049] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Accepted: 08/08/2022] [Indexed: 06/15/2023]
Abstract
The seroprevalence of Sarcocystis spp. and Toxoplasma gondii was researched in swine raised in Santa Maria, RS, Brazil. Serum samples from 84 pigs from 31 farms were tested using indirect immunofluorescence assay (IFA) for both agents. Additionally, 53 samples of pork sausages and tissues destined for human consumption, including: salami, sausage, black pudding, heart, tongue, brain, and rib muscle, were submitted to PCR to detect DNA for each agent. The frequency of anti-Sarcocystis spp. antibodies was 36.9% (31/84), with titers ranging from 32 to 1024, and 25% (21/84) for anti-T. gondii antibodies, with titers ranging from 64 to 2048. Sarcocystis spp. and T. gondii DNA were detected in 67.9% (36/53) and 13.2% (7/53) of samples, respectively. The presence of antibodies and the detection of DNA from Sarcocystis spp., and T. gondii suggests that the pigs were infected and may serve as an important reservoir for both parasites. The infection by these protozoa in the swine population is relevant to public health due to their zoonotic potential.
Collapse
Affiliation(s)
- Bruna Dias Espindola
- Laboratório de Doenças Parasitárias - LADOPAR, Departamento de Medicina Veterinária Preventiva - DMVP, Centro de Ciências Rurais - CCR, Universidade Federal de Santa Maria - UFSM, Santa Maria, RS, Brasil
| | - 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, Santa Maria, RS, Brasil
| | - 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, Santa Maria, RS, Brasil
| | - Gisele Vaz Aguirre Samoel
- Laboratório de Doenças Parasitárias - LADOPAR, Departamento de Medicina Veterinária Preventiva - DMVP, Centro de Ciências Rurais - CCR, Universidade Federal de Santa Maria - UFSM, Santa Maria, RS, Brasil
| | - Roberto Antônio Delgado Barcelos
- Laboratório de Doenças Parasitárias - LADOPAR, Departamento de Medicina Veterinária Preventiva - DMVP, Centro de Ciências Rurais - CCR, Universidade Federal de Santa Maria - UFSM, Santa Maria, RS, Brasil
| | - Alisson Rodrigues Döhler
- Laboratório de Doenças Parasitárias - LADOPAR, Departamento de Medicina Veterinária Preventiva - DMVP, Centro de Ciências Rurais - CCR, Universidade Federal de Santa Maria - UFSM, Santa Maria, RS, Brasil
| | - 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, Santa Maria, RS, Brasil
| | - 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, Santa Maria, RS, Brasil
| | - Luis Antonio Sangioni
- Laboratório de Doenças Parasitárias - LADOPAR, Departamento de Medicina Veterinária Preventiva - DMVP, Centro de Ciências Rurais - CCR, Universidade Federal de Santa Maria - UFSM, Santa Maria, RS, Brasil
| |
Collapse
|
8
|
Ludwig A, D'ambroso Fernandes F, Rojas Guerra R, Braünig P, Silva Ramos L, Souto Pacheco L, Sangioni LA, Silveira Flores Vogel F. Molecular detection of Toxoplasma gondii in placentas of women who received therapy during gestation in a toxoplasmosis outbreak. Infect Genet Evol 2022; 97:105145. [PMID: 34798319 DOI: 10.1016/j.meegid.2021.105145] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 11/10/2021] [Accepted: 11/14/2021] [Indexed: 06/13/2023]
Abstract
Toxoplasmosis is a disease caused by T. gondii, a protozoa which affects humans and animals and is widely distributed worldwide. In humans, there is great concern due to the serious consequences that can occur in the infection of pregnant women and the newborn. The early diagnosis of gestational toxoplasmosis is important for treatment to be carried out in order to prevent vertical transmission or reduce damage. The diagnosis can be made through the detection of antibodies in pregnant women or neonates and PCR of amniotic fluid. Previous studies have also reported PCR of the placenta as a good diagnostic test. Our study evaluated the detection of T. gondii DNA in placenta samples from parturients seen at the University Hospital of Santa Maria, Southern Brazil and treated during the pregnancy. We performed PCR in forty samples and five were positive, representing 12.5%. When correlating the treatment time and the detection of DNA in the placentas, no significant result was found. The prevalence of positive samples was lower than in other studies in the literature. The data reaffirm the importance of carrying out the analysis of the placenta.
Collapse
Affiliation(s)
- Aline Ludwig
- Laboratório de Doenças Parasitárias (LADOPAR), Departamento de Medicina Veterinária Preventiva (DMVP), Centro de Ciências Rurais (CCR), Universidade Federal de Santa Maria (UFSM), Av. Roraima, n°1000, Prédio 63C, Bairro Camobi, CEP: 97105-900 Santa Maria, RS, 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, n°1000, Prédio 63C, Bairro Camobi, CEP: 97105-900 Santa Maria, RS, Brazil.
| | - Renata Rojas Guerra
- Departamento de Estatística (DE), Centro de Ciências Naturais e Exatas (CCNE), Universidade Federal de Santa Maria (UFSM), Av. Roraima, n°1000, Prédio 13, Bairro Camobi, CEP: 97105-900 Santa Maria, Brazil
| | - Patricia Braünig
- Laboratório de Doenças Parasitárias (LADOPAR), Departamento de Medicina Veterinária Preventiva (DMVP), Centro de Ciências Rurais (CCR), Universidade Federal de Santa Maria (UFSM), Av. Roraima, n°1000, Prédio 63C, Bairro Camobi, CEP: 97105-900 Santa Maria, RS, Brazil
| | | | | | - Luis Antonio 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, n°1000, Prédio 63C, Bairro Camobi, CEP: 97105-900 Santa Maria, RS, Brazil
| | - Fernanda Silveira Flores Vogel
- Departamento de Estatística (DE), Centro de Ciências Naturais e Exatas (CCNE), Universidade Federal de Santa Maria (UFSM), Av. Roraima, n°1000, Prédio 13, Bairro Camobi, CEP: 97105-900 Santa Maria, Brazil
| |
Collapse
|
9
|
Bastiani MP, Lovato LT, Von Laer AE, Pötter L, Rodrigues RO, Souza BCD, Herrmann GP, Sangioni LA, Botton SDA. Occurrence of Leptospira spp. and factors associated with the infection in horses from a military contingent in the Rio Grande do Sul State, Brazil. Braz J Vet Res Anim Sci 2021. [DOI: 10.11606/issn.1678-4456.bjvras.2021.180884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The seroprevalence of Leptospira spp. and infection risk factors were investigated in horses from a military contingent in the Rio Grande do Sul State, Brazil. A total of 446 horses were evaluated and categorized into 309 mares, 11 stallions, and 126 horses with an average age of three years. To determine seroprevalence, serum samples from all horses were submitted to the microscopic agglutination test against 12 serovars belonging to nine serogroups, usually circulating in equine populations. To investigate the possible risk factors of infection by Leptospira spp., questionnaires were applied in that military unit. The seroprevalence in the horses with an average age of 3 years, mares, and stallions were 57.94% (73/126), 54.05% (165/309), and 45.45% (5/11), respectively. The main risk factors identified were contact with different water sources, the presence of rodents, and contact with wild and domestic animals. The high seroprevalence of anti‑Leptospira spp. antibodies may be associated with the presence of these risk factors. Therefore, the exposure of horses to possible reservoirs of Leptospira spp. should be minimized. Also, the immunoprophylaxis protocol should be reviewed and a shorter interval between vaccinations adopted to control leptospirosis in this herd.
Collapse
|
10
|
Portella LP, Fernandes FD, Rodrigues FDS, Minuzzi CE, Sangioni LA, Flores MM, Vogel FSF. Macroscopic, histological, and molecular aspects of Sarcocystis spp. infection in tissues of cattle and sheep. ACTA ACUST UNITED AC 2021; 30:e003621. [PMID: 34133647 DOI: 10.1590/s1984-29612021050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Accepted: 04/22/2021] [Indexed: 11/22/2022]
Abstract
The macroscopic, histological, and molecular aspects of Sarcocystis spp. were examined in the tissues of two cattle and four sheep, 16 and eight fragments analyzed respectively, condemned in the slaughterhouse. All 24 samples were collected and analyzed for detecting macrocysts and macroscopic lesions. Subsequently, subdivided for direct examination, polymerase chain reaction and histopathological examination. All sheep tissues samples had grossly white round to oval tissue cysts, ranging from 0.3 to 1 cm in diameter. In contrast, cattle tissues did not present grossly visible cysts but had randomly distributed white-yellow foci with irregular contours. All samples from cattle and sheep had microscopic cysts. In the histological examination of sheep tissues, circular to elongated, encapsulated, basophilic structures ranging from 30 to 3,000 µm in length and 20 to 1,000 µm in width were observed within the skeletal muscle fibers. In cattle tissues, all cardiac muscle four fragments analyzed contained circular to elongated basophilic structures inside cardiomyocytes and in some Purkinje fibers. PCR were performed using the primers: 2L and 3H. In conclusion, all 24 tissues were infected with Sarcocystis spp., and S. gigantea (in sheep) and S. cruzi (in cattle). were the identified species by sequencing.
Collapse
Affiliation(s)
- Luiza Pires Portella
- Laboratório de Doenças Parasitárias - LADOPAR, Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria - UFSM, Santa Maria, RS, Brasil
| | - Fagner D'Ambroso Fernandes
- Laboratório de Doenças Parasitárias - LADOPAR, Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria - UFSM, Santa Maria, RS, Brasil
| | | | - Camila Encarnação Minuzzi
- Laboratório de Doenças Parasitárias - LADOPAR, Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria - UFSM, Santa Maria, RS, Brasil
| | - Luis Antonio Sangioni
- Laboratório de Doenças Parasitárias - LADOPAR, Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria - UFSM, Santa Maria, RS, Brasil
| | - Mariana Martins Flores
- Laboratório de Patologia Veterinária - LPV, Departamento de Patologia, Universidade Federal de Santa Maria - UFSM, Santa Maria, RS, Brasil
| | - Fernanda Silveira Flores Vogel
- Laboratório de Doenças Parasitárias - LADOPAR, Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria - UFSM, Santa Maria, RS, Brasil
| |
Collapse
|
11
|
Portella LP, Fernandes FD, Minuzzi CE, de Pelegrini LFV, Sangioni LA, Cargnelutti JF, Vogel FSF. Molecular Detection and Characterization of Sarcocystis Infection in Naturally Infected Buffaloes, Brazil. J Food Prot 2021; 84:429-433. [PMID: 33108439 DOI: 10.4315/jfp-20-130] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2020] [Accepted: 10/22/2020] [Indexed: 11/11/2022]
Abstract
ABSTRACT Sarcocystosis is a disease caused by various Sarcocystis species, a coccidian protozoan parasite that infects humans and animals and is commonly found in ruminants. Although Sarcocystis occurs all over the world, the species responsible for infecting buffaloes in Brazil have not been identified. In this study, we used molecular methods to estimate the prevalence of natural Sarcocystis infection in buffaloes. Phylogenetic analyses were conducted for the first time to identify the species of this protozoan that are responsible for infecting buffalos in southern Brazil, Rio Grande do Sul state. Heart samples from 80 buffaloes were subjected to microscopic examination followed by molecular analysis. Microcysts were present in 19 (23.75%) of 80 samples. The genomic DNA from the 19 cyst samples was extracted and amplified, and six sequences were obtained. The analysis was performed with the StandenPackage software, and the nucleotide sequences generated were analyzed by comparison with sequences in GenBank. All the sequenced samples were identified as Sarcocystis levinei. HIGHLIGHTS
Collapse
Affiliation(s)
- Luiza Pires Portella
- Department of Preventive Veterinary Medicine, Parasitic Diseases Laboratory, Santa Maria, CEP 97105900, Brazil (ORCID: https://orcid.org/0000-0002-9179-2159 [L.P.P.]; https://orcid.org/0000-0002-2591-2327 [F.D.F.]; https://orcid.org/0000-0002-8055-7495 [C.E.M.]; https://orcid.org/000-0002-2364-1084 [L.A.S.]; https://orcid.org/0000-0002-3160-3643 [J.F.C.]; https://orcid.org/0000-0003-1351-9912 [F.S.F.V.])
| | - Fagner D'Ambroso Fernandes
- Department of Preventive Veterinary Medicine, Parasitic Diseases Laboratory, Santa Maria, CEP 97105900, Brazil (ORCID: https://orcid.org/0000-0002-9179-2159 [L.P.P.]; https://orcid.org/0000-0002-2591-2327 [F.D.F.]; https://orcid.org/0000-0002-8055-7495 [C.E.M.]; https://orcid.org/000-0002-2364-1084 [L.A.S.]; https://orcid.org/0000-0002-3160-3643 [J.F.C.]; https://orcid.org/0000-0003-1351-9912 [F.S.F.V.])
| | - Camila EncarnaÇÃo Minuzzi
- Department of Preventive Veterinary Medicine, Parasitic Diseases Laboratory, Santa Maria, CEP 97105900, Brazil (ORCID: https://orcid.org/0000-0002-9179-2159 [L.P.P.]; https://orcid.org/0000-0002-2591-2327 [F.D.F.]; https://orcid.org/0000-0002-8055-7495 [C.E.M.]; https://orcid.org/000-0002-2364-1084 [L.A.S.]; https://orcid.org/0000-0002-3160-3643 [J.F.C.]; https://orcid.org/0000-0003-1351-9912 [F.S.F.V.])
| | - Luis Fernando Vilani de Pelegrini
- Department of Preventive Veterinary Medicine, Parasitic Diseases Laboratory, Santa Maria, CEP 97105900, Brazil (ORCID: https://orcid.org/0000-0002-9179-2159 [L.P.P.]; https://orcid.org/0000-0002-2591-2327 [F.D.F.]; https://orcid.org/0000-0002-8055-7495 [C.E.M.]; https://orcid.org/000-0002-2364-1084 [L.A.S.]; https://orcid.org/0000-0002-3160-3643 [J.F.C.]; https://orcid.org/0000-0003-1351-9912 [F.S.F.V.])
| | - Luis Antonio Sangioni
- Department of Preventive Veterinary Medicine, Parasitic Diseases Laboratory, Santa Maria, CEP 97105900, Brazil (ORCID: https://orcid.org/0000-0002-9179-2159 [L.P.P.]; https://orcid.org/0000-0002-2591-2327 [F.D.F.]; https://orcid.org/0000-0002-8055-7495 [C.E.M.]; https://orcid.org/000-0002-2364-1084 [L.A.S.]; https://orcid.org/0000-0002-3160-3643 [J.F.C.]; https://orcid.org/0000-0003-1351-9912 [F.S.F.V.])
| | - Juliana Felipetto Cargnelutti
- Department of Preventive Veterinary Medicine, Parasitic Diseases Laboratory, Santa Maria, CEP 97105900, Brazil (ORCID: https://orcid.org/0000-0002-9179-2159 [L.P.P.]; https://orcid.org/0000-0002-2591-2327 [F.D.F.]; https://orcid.org/0000-0002-8055-7495 [C.E.M.]; https://orcid.org/000-0002-2364-1084 [L.A.S.]; https://orcid.org/0000-0002-3160-3643 [J.F.C.]; https://orcid.org/0000-0003-1351-9912 [F.S.F.V.])
| | - Fernanda Silveira Flores Vogel
- Department of Preventive Veterinary Medicine, Parasitic Diseases Laboratory, Santa Maria, CEP 97105900, Brazil (ORCID: https://orcid.org/0000-0002-9179-2159 [L.P.P.]; https://orcid.org/0000-0002-2591-2327 [F.D.F.]; https://orcid.org/0000-0002-8055-7495 [C.E.M.]; https://orcid.org/000-0002-2364-1084 [L.A.S.]; https://orcid.org/0000-0002-3160-3643 [J.F.C.]; https://orcid.org/0000-0003-1351-9912 [F.S.F.V.])
| |
Collapse
|
12
|
Pinto-Ferreira F, Nino BDSL, Martins FDC, Monica TC, Britto IC, Signori A, Medici KC, Freire RL, Navarro IT, Garcia JL, Headley SA, Vogel FSF, Minuzzi CE, Portella LP, Bräunig P, Sangioni LA, Ludwig A, Ramos LS, Pacheco L, Silva CR, Pacheco FC, Menegolla IA, Farinha LB, Haas S, Canal N, Mineo JR, Difante CM, Mitsuka-Breganó R. Isolation, genetic and immunohistochemical identification of Toxoplasma gondii from human placenta in a large toxoplasmosis outbreak in southern Brazil, 2018. Infect Genet Evol 2020; 85:104589. [PMID: 33039602 DOI: 10.1016/j.meegid.2020.104589] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 09/18/2020] [Accepted: 10/05/2020] [Indexed: 11/25/2022]
Abstract
The present study aimed to describe a molecular analysis of environmental and pork samples, the isolation, genetic identification and immunohistochemistry (IHC) of Toxoplama gondii from placenta and amniotic fluid from five pregnant women that miscarried during a toxoplasmosis outbreak in 2018, Santa Maria, Rio Grande do Sul. Environmental and pork samples were submitted to polymerase chain reaction (PCR); placenta and amniotic fluid samples to histopathology, IHC, mouse bioassay and PCR. All samples were genotyped by PCR-RFLP with 11 loci. Histopathologic and IHC were compatibles with toxoplasmosis. All pregnants were positive in PCR and bioassay, the genotypes were compared, and all were equal suggesting a same source of infection. Among the environmental and food samples, a sludge sample from a water tank and two porks samples were positive in PCR, and the genotypes were different from the pregnant women isolates. It is concluded that obtain and compare isolates is essential to elucidate outbreak source.
Collapse
Affiliation(s)
- Fernanda Pinto-Ferreira
- Departamento de Medicina Veterinária Preventiva, Universidade Estadual de Londrina, Londrina, Paraná, Brazil.
| | - Beatriz de Souza Lima Nino
- Departamento de Medicina Veterinária Preventiva, Universidade Estadual de Londrina, Londrina, Paraná, Brazil.
| | | | - Thais Cabral Monica
- Departamento de Medicina Veterinária Preventiva, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - Isadora Cortella Britto
- Departamento de Medicina Veterinária Preventiva, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - Ariana Signori
- Departamento de Medicina Veterinária Preventiva, Universidade Estadual de Londrina, Londrina, Paraná, Brazil
| | - Kerlei Cristina Medici
- Departamento de Medicina Veterinária Preventiva, Universidade Estadual de Londrina, Londrina, Paraná, Brazil.
| | - Roberta Lemos Freire
- Departamento de Medicina Veterinária Preventiva, Universidade Estadual de Londrina, Londrina, Paraná, Brazil.
| | - Italmar Teodorico Navarro
- Departamento de Medicina Veterinária Preventiva, Universidade Estadual de Londrina, Londrina, Paraná, Brazil.
| | - João Luis Garcia
- Departamento de Medicina Veterinária Preventiva, Universidade Estadual de Londrina, Londrina, Paraná, Brazil.
| | - Selwyn Arlington Headley
- Departamento de Medicina Veterinária Preventiva, Universidade Estadual de Londrina, Londrina, Paraná, Brazil.
| | | | - Camila E Minuzzi
- Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
| | | | - Patricia Bräunig
- Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
| | | | - Aline Ludwig
- Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
| | - Luciane Silva Ramos
- Hospital Universitário de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
| | - Liliane Pacheco
- Hospital Universitário de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
| | | | | | | | - Lourdes Bonfleur Farinha
- Vigilância Epidemiológica 4(a) Regional de Saúde - Secretaria da Saúde, Rio Grande do Sul, Brazil.
| | - Simone Haas
- LACEN/RS - Laboratório Central de Saúde Pública do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil.
| | - Natalia Canal
- LACEN/RS - Laboratório Central de Saúde Pública do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil.
| | | | - Cledison Marcio Difante
- Superintendência de Vigilância em Saúde/Secretaria Municipal de Saúde, Rio Grande do Sul, Brazil
| | - Regina Mitsuka-Breganó
- Departamento de Medicina Veterinária Preventiva, Universidade Estadual de Londrina, Londrina, Paraná, Brazil.
| |
Collapse
|
13
|
Minuzzi CE, Fernandes FD, Portella LP, Bräunig P, Sturza DAF, Giacomini L, Salvagni E, Ribeiro JDS, Silva CR, Difante CM, Farinha LB, Menegolla IA, Gehrke G, Dilkin P, Sangioni LA, Mallmann CA, Vogel FSF. Contaminated water confirmed as source of infection by bioassay in an outbreak of toxoplasmosis in South Brazil. Transbound Emerg Dis 2020; 68:767-772. [PMID: 32682332 DOI: 10.1111/tbed.13741] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [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: 01/14/2020] [Revised: 07/07/2020] [Accepted: 07/13/2020] [Indexed: 11/26/2022]
Abstract
The protozoan Toxoplasma gondii is a causative agent of toxoplasmosis, an important and widespread zoonotic disease. The transmission of this disease in humans includes ingestion of sporulated oocysts present in contaminated water or food. T. gondii oocysts are widely distributed and toxoplasmosis is considered a major food- and waterborne pathogen worldwide, making drinking water containing sporulated T. gondii oocysts a major source of contamination for people. In the first half of 2018, an unprecedented outbreak of toxoplasmosis was reported in the city of Santa Maria, southern Brazil. The temporal and spatial distribution of the cases strongly suggested a waterborne infection. Thus, the aim of this study was to investigate a possible involvement of treated water as a source of the outbreak. For this, piglets received potentially contaminated water ad libitum for 21 days and the infection was monitored by serology through IFAT and investigation of T. gondii DNA in tissues by PCR amplification of a 529 bp followed by mouse bioassays. All piglets receiving test water ad libitum for 21 days as well as positive controls seroconverted to T. gondii. T. gondii DNA was detected in 62.5% of the piglets that received test water. All mice inoculated with tissues from each positive piglet were PCR-positive. These results strongly indicated the presence of viable oocysts in the test water administered to the animals during the study.
Collapse
Affiliation(s)
| | | | | | | | | | | | - Emerson Salvagni
- Secretaria da Saúde do estado do Rio Grande do Sul, Santa Maria, Brazil
| | | | - Camila Ribeiro Silva
- CIEVS/Episus e Coordenação Geral de Laboratórios, SVS, Ministério da Saúde, Brasília, Brazil
| | | | | | | | - Gisele Gehrke
- Universidade Federal de Santa Maria, Santa Maria, Brazil
| | | | | | | | | |
Collapse
|
14
|
Minuzzi CE, Cezar AS, Bräunig P, Portella LP, Rodrigues FDS, Sangioni LA, Vogel FSF. Occurrence of Sarcocystis gigantea macrocysts and high frequency of S. tenella microcysts in sheep from southern Brazil. Vet Parasitol Reg Stud Reports 2018; 15:100256. [PMID: 30929933 DOI: 10.1016/j.vprsr.2018.12.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2018] [Revised: 11/17/2018] [Accepted: 12/02/2018] [Indexed: 10/27/2022]
Abstract
The aim of this study was to investigate the occurrence of sarcocysts in sheep slaughtered in the Rio Grande do Sul state, Brazil. Heart and esophagus samples from 130 sheep were subjected to macroscopic and microscopic examination, followed by molecular analysis. Ten sheep (7.7%) had Sarcocystis gigantea macrocysts in esophagus, as identified by gene sequencing. Microcysts were present in 96.1% of the sheep, with a higher frequency (p < .05) in the heart (91.5%) compared to the esophagus (81.5%) samples. The microcysts were identified as Sarcocystis tenella by gene sequencing. Our results revealed a high frequency of Sarcocystis spp. infection in sheep from southern Brazil. To the authors knowledge, this is the first molecular confirmation of S. gigantea presence in Brazil.
Collapse
Affiliation(s)
- Camila E Minuzzi
- 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.
| | - Alfredo S Cezar
- Universidade Regional do Noroeste do Estado do Rio Grande do Sul (UNIJUÍ), Ijuí, RS, Brazil
| | - Patricia Bräunig
- 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
| | - Luiza P Portella
- 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
| | - Fernando de S Rodrigues
- 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
| | - Luis Antonio 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
| | - Fernanda S F 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
| |
Collapse
|
15
|
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.
Collapse
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
| |
Collapse
|
16
|
Reginato CZ, Cadore GC, Menezes FRD, Sangioni LA, Vogel FSF. Efficacy of commercial synthetic pyrethroids and organophosphates associations used to control Rhipicephalus (Boophilus) microplus in Southern Brazil. Rev Bras Parasitol Vet 2017; 26:500-504. [DOI: 10.1590/s1984-29612017054] [Citation(s) in RCA: 6] [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] [Received: 05/03/2017] [Accepted: 08/28/2017] [Indexed: 01/08/2023]
Abstract
Abstract This study evaluated the acaricidal efficiency of synthetic pyrethroids (SP) associated with organophosphates (OP) against Rhipicephalus (Boophilus) microplus populations in the state of Rio Grande do Sul, Southern Brazil. Ticks were collected in 54 cattle farms and tested using in vitro adult immersion test against four commercially available acaricide mixtures of SP and OP. Only one of four acaricides, comprising a mixture of cypermethrin, chlorpyrifos, and fenthion, had a mean efficiency higher than 95%, and was effective in 94.44% (51/54) of the cattle farms tested. The acaricide with a mixture of cypermethrin, chlorpyrifos, and citronelall had the lowest mean efficiency (62.11%), and was effective in 29.62% (16/54) of cattle farms tested. Furthermore, R. (B.) microplus in Southern Brazil exhibited differing degrees of resistance to SP and OP mixtures. The results suggest that the presence of fenthion contributes to the higher efficiency of the formulation with this active principle. This is possibly due to its recent commercial availability, as tick populations have been lower challenged with this product. Monitoring the resistance of ticks to carrapaticides is essential to maximize the efficiency of these products in the control of R. (B.) microplus.
Collapse
|
17
|
Portella LP, Cadore GC, Sangioni LA, Pellegrini LFV, Fighera R, Ramos F, Vogel FSF. Antibodies against Apicomplexa protozoa and absence sarcocysts in heart tissues from horses in southern Brazil. Rev Bras Parasitol Vet 2017; 26:100-103. [DOI: 10.1590/s1984-29612016068] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Accepted: 09/19/2016] [Indexed: 11/21/2022]
Abstract
Abstract Sarcocystis spp., Neospora spp., and Toxoplasma gondii are Apicomplexa protozoa that can infect horses. This study aimed to investigate the occurrence of antibodies against Sarcocystis spp., Neospora spp., and T. gondii in horses slaughtered in southern Brazil. The presence of histological lesions, tissue cysts, and Sarcocystis spp. DNA in the hearts of these horses was also investigated. A total of 197 paired serum and heart samples were evaluated by serology and direct microscopic examination; 50 of these samples were subjected to histopathological and PCR analyses. Antibodies against at least one of the protozoa were detected in 146 (74.1%) of the serum samples. The frequencies of positive serology were: 36% (71/197) against Sarcocystis spp., 39.1% (77/197) against Neospora spp., and 47.2% (93/197) against T. gondii. No cysts, Sarcocystis spp. DNA, or histopathological lesions were observed in myocardial tissue samples. The frequencies of antibody seropositivity against Sarcocystis spp., Neospora spp., and T. gondii showed that horses are frequently infected by these parasites in southern Brazil. The absence of sarcocysts in horse tissues is compatible with their role as aberrant/accidental hosts in the life cycle of Sarcocystis spp..
Collapse
|
18
|
Antonello AM, Camillo G, Weber A, Braunig P, Sangioni LA, Vogel FSF. DINÂMICA SOROLÓGICA DE ANTICORPOS CONTRA Neospora caninum DURANTE A GESTAÇÃO DE VACAS NATURALMENTE INFECTADAS. Ciênc anim bras 2015. [DOI: 10.1590/1089-6891v16i428127] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Resumo Neosporose é uma das maiores causas de perdas reprodutivas em rebanhos bovinos. O estágio da gestação em que ocorre a infecção ou o recrudescimento das formas bradizoítas, que se reflete no nível de anticorpos, é um dos fatores que define o futuro da gestação. Portanto, este trabalho visa a traçar um esboço do perfil sorológico de fêmeas naturalmente infectadas durante a gestação. Para isso, amostras séricas de 25 vacas da raça holandesa foram coletadas desde o dia da inseminação artificial até a véspera do parto, em intervalos mensais. Essas amostras foram testadas por imunofluorescência indireta em busca de IgG. Dos 25 animais, somente 13 foram utilizados na análise, por serem soropositivos desde o início ou por se soroconverteram durante a gestação. Observou-se um aumento gradual dos níveis de anticorpos ao longo da gestação, mais evidente na metade final do período. Observou-se também diferença significativa nos títulos de anticorpos entre os períodos iniciais e finais da gestação, sugerindo a reativação de formas bradizoítas. Tais resultados reforçam a ideia da flutuação nos níveis de anticorpos ao longo da gestação, influenciado pela reativação de N. caninum. O conhecimento dessa dinâmica é importante para a patogenia e epidemiologia da infecção bem como para o diagnóstico.
Collapse
|
19
|
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
| |
Collapse
|
20
|
Pivoto FL, Machado FA, Anezi-Junior PA, Weber A, Cezar AS, Sangioni LA, Vogel FSF. Improving liveweight gain of lambs infected by multidrug-resistant nematodes using a FECRT-based schedule of treatments. Parasitol Res 2014; 113:2303-10. [PMID: 24744221 DOI: 10.1007/s00436-014-3885-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2013] [Accepted: 03/26/2014] [Indexed: 11/29/2022]
Abstract
The aim of this study was to compare the liveweight gain of lambs, infected by multidrug-resistant nematodes, treated by conventional schemes of helminth control or using a schedule based on fecal egg count reduction test (FECRT). The flock was selected after a FECRT (experiment 1) which revealed a parasite population resistant to benzimidazoles, imidazothiazoles, macrocyclic lactones (ivermectin), salicylanilides, nitrophenols, and organophosphates. Despite the parasite resistance to ivermectin (an avermectin), the moxidectin (a milbemycin) was effective against the gastrointestinal nematodes (PR > 90%). In experiment 2, 48 suckling lambs were distributed in four randomized blocks (G1, G2, G3, and G4) by previous body weighings. G1 was kept as untreated control; G2 was treated following a FECRT-based schedule with drugs chosen based on fecal analysis (first drench with moxidectin, second drench with a combination of moxidectin and levamisole, and third drench with praziquantel, an anti-cestode drug); G3 and G4 received three drenches with ivermectin or disophenol, respectively. Body weighings and fecal analysis of these lambs were performed every 2 weeks over a 98-day period. An effective control of gastrointestinal nematodes was obtained with two nematicidal drenches following the FECRT-based schedule of treatments. On the other hand, eggs per gram of feces (EPG) counts were no different among untreated control, G3, and G4. Lambs treated using the FECRT-based schedule had the greatest liveweight gain among the groups tested. Additionally, liveweight gain was no different among the groups G3, G4, and G1. The FECRT-based schedule of anthelmintic treatments was beneficial regarding productivity and sustainability of helminth control in lambs infected by multidrug-resistant nematodes.
Collapse
Affiliation(s)
- Felipe Lamberti Pivoto
- Department of Preventive Veterinary Medicine, Universidade Federal de Santa Maria (UFSM), Av. Roraima 1000, Prédio 44, 97105-900, Santa Maria, RS, Brazil
| | | | | | | | | | | | | |
Collapse
|
21
|
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.
Collapse
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
| | | | | | | | | | | | | |
Collapse
|
22
|
Antonello AM, Pivoto FL, Camillo G, Braunig P, Sangioni LA, Pompermayer E, Vogel FSF. The importance of vertical transmission of Neospora sp. in naturally infected horses. Vet Parasitol 2012; 187:367-70. [PMID: 22436425 DOI: 10.1016/j.vetpar.2012.02.005] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2011] [Revised: 01/31/2012] [Accepted: 02/10/2012] [Indexed: 11/18/2022]
Abstract
Neospora spp. is a intracellular protozoan phylogenetically closely related to Toxoplasma gondii and Sarcocystis neurona, and it can infect horses leading to the development of reproductive or neurological diseases. We determined the presence of antibodies to Neospora sp. in mares at their parturition time and determine the frequency of vertical transmission in healthy foals to verify the importance of transplacental transmission. The samples were analyzed by indirect immunofluorescence antibody test, showing that seroprevalence in mares is higher than in foals and seropositive mares are likely to transmit the neosporosis to their offspring. This shows that endogenous challenge occurs in horses, and it suggests that this protozoan can be disseminated by means of transplacental transmission in horse species.
Collapse
Affiliation(s)
- Ana Maria Antonello
- Departamento de Medicina Veterinária Preventiva (DMVP), Centro de Ciências Rurais (CCR), Universidade Federal de Santa Maria (UFSM), 97105-900 Santa Maria, RS, Brazil.
| | | | | | | | | | | | | |
Collapse
|
23
|
Cadore GC, Vogel FS, Sangioni LA, Pena HF, Gennari SM. IgM e IgG como marcadores da infecção transplacentária por Neospora caninum em fetos bovinos. Pesq Vet Bras 2010. [DOI: 10.1590/s0100-736x2010000700007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
O objetivo deste estudo foi determinar a ocorrência de anticorpos anti-Neospora caninum em 260 amostras de soro coletadas de fetos bovinos de julho de 2007 a março de 2008, em abatedouro do município de Santa Maria, Rio Grande do Sul, Brasil. Para detecção de anticorpos anti-N. caninum, a técnica de imunofluorescência indireta foi utilizada tanto para a detecção de imunoglobulinas G e M. Amostras com títulos e" 25 foram consideradas positivas. Das 260 amostras testadas, 15% (39/260) foram positivas para anticorpos anti-N. caninum. Destas, em 38 (97,4%) foi detectada a presença de IgG anti-N. caninum e em seis (15,4%) de IgM. Em cinco amostras (12,8%) detectaram-se ambos, IgG e IgM. Os resultados reafirmam a habilidade do N. caninum em determinar infecção fetal. A pesquisa de IgM foi de limitada importância na detecção da infecção via transplacentária em soro fetal bovino.
Collapse
|
24
|
Toscan G, Carneiro Fontoura Pereira R, Araujo L, Sangioni LA, Silveira Flores Vogel F. COMPARAÇÃO DA PREVALÊNCIA DE Cryptosporidium spp. EM EQUINOS DE TRAÇÃO E EM ATLETAS DO JOCKEY CLUB DE SANTA MARIA, RS, BRASIL. Ci Anim Bras 2010. [DOI: 10.5216/cab.v11i2.4522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
|