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1.
Arq. bras. med. vet. zootec. (Online) ; 74(6): 1059-1064, 2022. mapas
Article in English | VETINDEX | ID: biblio-1416158

ABSTRACT

Brucellosis is a zoonotic disease widespread almost all over the world, representing a significant economic and public health problem. Brucella melitensis, B. suis and B. abortus are considered the most pathogenic species for humans. The most virulent species, B. melitensis is endemic in many parts of the world, particularly the biovar 3 in the Mediterranean and Eastern Europe. Some Latin American countries are seriously affected by biovar 1, especially Mexico, Peru and northern Argentina. Furthermore, while Brazil is considered free of this etiologic agent, one recurrent question is whether this infection really does not occur in Brazil or there is a lack of research/data on the subject. To answer this question, this study aims to investigate the occurrence of antibodies against smooth Brucella in goats and sheep in the states of Sergipe, Paraíba, Ceará and Paraíba. All samples were screened by the Rose Bengal test (RBT). The complement fixation (CFT) and the fluorescence polarization (FPT) tests were used as confirmatory tests. There were no positive samples in the confirmatory tests (both CFT and FPT). We, therefore, conclude that this result reinforces the previous knowledge regarding the exotic status of B. melitensis infection in Brazil.


A brucelose é uma das doenças de caráter zoonótico mais difundidas no mundo, representando um grande problema econômico e de saúde pública. A Brucella melitensis, a B. suis e a B. abortus são consideradas as mais patogênicas espécies para humanos. A espécie apontada como a mais virulenta é a B. melitensis, endêmica em várias partes do mundo, particularmente o biovar 3 na região do Mediterrâneo e na Europa Oriental. Alguns países da América Latina são seriamente afetados pelo biovar 1, especialmente México, Peru e norte da Argentina. O Brasil é considerado livre desse agente etiológico, porém sempre há o questionamento se a infecção não ocorre ou se falta pesquisa. Diante dessa questão, o objetivo deste trabalho foi investigar a ocorrência de anticorpos contra amostras lisas de Brucella em caprinos e ovinos dos estados de Sergipe, Bahia, Ceará e Paraíba. Todas as amostras foram submetidas triagem pelo teste do antígeno acidificado tamponado (AAT). Como testes confirmatórios, utilizou-se a reação de fixação de complemento (RFC) e também o teste de polarização fluorescente (TPF). Nenhuma amostra foi positiva nos testes confirmatórios (RFC e TPF). Esse resultado comprova que a infecção por B. melitensis é exótica no Brasil.


Subject(s)
Animals , Brucellosis/epidemiology , Goats/microbiology , Sheep/microbiology , Brucella melitensis/isolation & purification , Fluorescence Polarization/veterinary
2.
Arq. bras. med. vet. zootec. (Online) ; 73(2): 508-512, Mar.-Apr. 2021. tab
Article in English | LILACS, VETINDEX | ID: biblio-1248944

ABSTRACT

Mycobacterium avium subesp. paratuberculosis (MAP) e o vírus da leucemia bovina (BLV) são agentes que causam grandes perdas econômicas nos rebanhos. O objetivo deste estudo foi avaliar a situação epidemiológica da paratuberculose bovina (PTB) e leucose enzoótica bovina (EBL) em rebanhos leiteiros de Lagoa Formosa, Minas Gerais, Brasil. Foram coletadas 236 amostras de sangue de vacas, as quais foram submetidas aos testes ELISA e imunodifusão em gel de ágar para detecção de anticorpos contra MAP e BLV. A soroprevalência de anticorpos contra MAP e BVL foi de 20% para os rebanhos e 6% para os animais e de 85% para os rebanhos e 50,42% para os animais, respectivamente. A presença dessas enfermidades deve servir como um alerta para os produtores e veterinários, para que concentrem maior atenção na implementação de medidas higiênico-sanitárias, incorporando elementos de vigilância com base nos riscos identificados no estudo.(AU)


Subject(s)
Animals , Cattle , Paratuberculosis/epidemiology , Risk Factors , Mycobacterium avium subsp. paratuberculosis/isolation & purification , Enzootic Bovine Leukosis/epidemiology , Leukemia Virus, Bovine/isolation & purification , Brazil , Enzyme-Linked Immunosorbent Assay/veterinary , Immunodiffusion/veterinary
3.
Trop Anim Health Prod ; 51(3): 735, 2019 03.
Article in English | MEDLINE | ID: mdl-30617723

ABSTRACT

The original version of this article unfortunately contains an error. Vanessa do Nascimento Ramos was not included in the original article as one of the contributors. The name is now included in the authorgroup.

4.
Trop Anim Health Prod ; 50(2): 433-439, 2018 Feb.
Article in English | MEDLINE | ID: mdl-29082458

ABSTRACT

Semen contaminated with microorganisms can disseminate serious diseases including brucellosis. The objectives of this study were to detect Brucella-specific antibodies and Brucella abortus DNA in samples of blood and fresh semen from 100 animals older than 20 months. The samples were collected on farms and in semen collection and processing centers (CCPS). The serum samples were evaluated by Rose Bengal test (RBT). B. abortus DNA was detected by a polymerase chain reaction (PCR) using BAB and IS771 primers. The difference between the vaccine field strain was identified using ery-1, ery-2, and ery-3 primers, using the hemi-nested PCR method. No anti-B. abortus antibodies were detected in the serum samples. Out of the total semen samples, 68% (68/100) presented amplifications of the B. abortus genes. All (68/68) were identified as B19 strain of Brucella abortus vaccine. It was concluded that even bulls that are seronegative for brucellosis can eliminate the bacteria in the semen. The presence in the DNA of the B19 vaccine strain should be investigated for a better understanding of the epidemiological importance of this strain in these animals.


Subject(s)
Brucella abortus/isolation & purification , Brucellosis/veterinary , Semen/microbiology , Animals , Antibodies, Bacterial/blood , Brazil , Brucella Vaccine/immunology , Brucella abortus/immunology , Brucellosis/immunology , Brucellosis/microbiology , Cattle , DNA Primers , Male , Polymerase Chain Reaction/veterinary
5.
Transbound Emerg Dis ; 65(2): 476-479, 2018 Apr.
Article in English | MEDLINE | ID: mdl-29034582

ABSTRACT

A total of 27 seminal plasma samples from cattle-breeding farms or semen centres located in Minas Gerais, Brazil, previously negative by serological and tested positive for Brucella spp. with primer specific for the amplification of the gene virb5 by polymerase chain reaction (PCR) were analysed for the detection of Brucella abortus DNA by PCR. It was found that nine samples (33.33%) contained B. abortus B19 strain DNA, two (7.40%) contained B. abortus DNA and five (18.51%) contained both DNA. The larger number of samples with B. abortus B19 strain DNA would explained by the environmental contamination by vaccinated females with persistent excretion or some illegal vaccination process. It is first reported of male bovines detected with both DNA.


Subject(s)
Brucella abortus/genetics , Brucella abortus/isolation & purification , Brucellosis, Bovine/diagnosis , DNA, Bacterial/genetics , Semen/microbiology , Animals , Brazil , Brucellosis, Bovine/microbiology , Cattle , DNA Primers/chemistry , Male , Polymerase Chain Reaction/veterinary , Vaccination/veterinary
6.
Trop Anim Health Prod ; 49(3): 555-559, 2017 03.
Article in English | MEDLINE | ID: mdl-28124730

ABSTRACT

Leptospirosis is a zoonotic disease of world importance, and its transmission depends on the interaction between humans and animals. Given the necessity to investigate potential hosts of Leptospira spp., this study verified the prevalence of different serovars in the species of Rhipidomys spp., a widespread sigmodont rodent in Brazil. The studied population originates from a semi-evergreen forest located in the county of Uberlândia, in the state of Minas Gerais. The microscopic agglutination test (MAT) was performed with 14 serovars. Thirteen out of the 43 wild rodents captured showed a positive agglutination reaction, with a greater prevalence of the serovars Pyrogenes, Copenhageni, and Canicola. This study found a prevalence of 30.3% anti-Leptospira spp. antibodies; all positive animals were reactive to more than one serovar.


Subject(s)
Antibodies, Bacterial/blood , Leptospira/immunology , Leptospirosis/veterinary , Rodent Diseases/epidemiology , Agglutination Tests/veterinary , Animals , Arvicolinae , Brazil/epidemiology , Forests , Leptospirosis/epidemiology , Prevalence , Risk Factors , Rodent Diseases/blood , Rodent Diseases/microbiology , Tropical Climate , Zoonoses/epidemiology
7.
Data Brief ; 7: 877-81, 2016 Jun.
Article in English | MEDLINE | ID: mdl-27077089

ABSTRACT

The microscopic agglutination test (MAT) is considered the "golden standard" leptospirosis serodiagnostic test, but there is little information about it as it pertains to snakes. To fill this information gap, we provide data on serovars and titers of fifty-six Crotalus durissus collilineatus sera samples that tested positive by MAT (10.1016/j.actatropica.2016.02.006 (Rodrigues et al., 2016) [5]). These data are presented in a table, along with a description of the methodology used for sample collection and serologic testing.

8.
Acta Trop ; 158: 39-42, 2016 Jun.
Article in English | MEDLINE | ID: mdl-26875762

ABSTRACT

Leptospirosis is a worldwide spread zoonosis that can affect all groups of vertebrates, including reptiles. Because it has been little studied in snakes, this study focused on determining the occurrence of anti-Leptospira spp. antibodies in 64 Crotalus durissus collilineatus kept in captivity and on identifying the most common serovars in these animals, using the microscopic agglutination test. Of these, almost 90% were positive and there were reactions to the 22 serovars used in the study. The most common serovar in these snakes was Javanica, Andamana and Patoc. Most frequent titers were 25 and 50, although high titers (such as 1600) were also recorded, despite the absence of clinical symptoms. The possibility should be considered of captive snakes serving as a serious source of leptospiral infection in humans, which is why it is essential to study, prevent and control the disease in breeding centers and serpentariums.


Subject(s)
Antibodies, Bacterial/analysis , Crotalus/immunology , Crotalus/microbiology , Leptospira/immunology , Leptospirosis/epidemiology , Leptospirosis/veterinary , Zoonoses/immunology , Agglutination Tests/veterinary , Animals , Brazil/epidemiology , Humans , Leptospira/genetics , Zoonoses/epidemiology
9.
R. bras. Ci. avíc. ; 17(1): 57-62, jan.-mar. 2015. tab
Article in English | VETINDEX | ID: vti-39543

ABSTRACT

Avian salmonellosis and mycoplasmosis are infectious diseases that, in addition of causing lack of flock uniformity, represent a hazard to human health. The objective of the present study was to evaluate the seroprevalence of mycoplasmosis and salmonellosis in commercial broilers, backyard chickens, and spent hens slaughtered at a processing plant with local health inspection in Uberlândia, MG, Brazil. A total of 210 samples were randomly collected at the time of bleeding. Samples were submitted to rapid plate serum agglutination test (RSA) for the classification of Salmonella pullorum, Salmonella gallinarum, Mycoplasma gallisepticum and Mycoplasma synoviae. In order to increase result specificity, mycoplasmosis-positive samples were submitted to hemagglutination inhibition test (HI). No samples presented detectable antibodies against Salmonella pullorum or Salmonella gallinarum in the RSA test. Only Mycoplasma synoviae was detected in 14% of the backyard chickens and 0.74% in commercial broilers, whereas no antibodies were detected in spent hens. The seroprevalence rates found in the present study emphasize the need of keeping chicken flocks free from disease using effective biosafety systems.(AU)


Subject(s)
Animals , Chickens/abnormalities , Salmonella Infections/diagnosis , Mycoplasma
11.
Ars vet ; 31(2)2015.
Article in Portuguese | VETINDEX | ID: vti-32289

ABSTRACT

A brucelose é uma zoonose de grande importância, que acomete principalmente bovinos, caprinos e ovinos. A brucelose caprina é causada predominantemente por B. melitensis, mas existe a possibilidade de infecção por B. abortus, principalmente em locais em que ocorre a criação consorciada de caprinos e bovinos. A ocorrência de abortamentos por B. abortus em pequenos ruminantes é rara, entretanto já foi evidenciada em diversos países do mundo, mediante confirmação pelo isolamento do microrganismo. A detecção da brucelose nos animais é essencial para a prevenção da doença nos humanos. Considerando a importância da brucelose na cadeia produtiva da caprinocultura aliada à escassez de dados sobre a doença no estado de Minas Gerais, objetivou-se investigar a frequência de aglutininas anti-B. abortus em caprinos de uma propriedade do sul do estado de Minas Gerais. Utilizou-se amostras de soro sanguíneo de 100 caprinos de diferentes raças e idades, 8 machos e 92 fêmeas provenientes de uma propriedade do sul do estado Minas Gerais. Os exames foram realizados no Laboratório de Doenças Infectocontagiosas da Faculdade de Medicina Veterinária (FAMEV), da Universidade Federal de Uberlândia (UFU). As amostras foram examinadas por meio do teste de triagem do Antígeno Acidificado Tamponado (AAT) conforme as recomendações do Programa Nacional de Controle e Erradicação da Brucelose e Tuberculose (P

12.
Ars vet ; 31(2)2015.
Article in Portuguese | VETINDEX | ID: vti-31702

ABSTRACT

A Tuberculose (TB) e a Leucose Enzoótica dos Bovinos (LEB) são doenças infectocontagiosas, caracterizadas pela evolução crônica e pelos prejuízos gerados à pecuária bovina. Essas doenças comprometem o desempenho produtivo dos rebanhos, causando condenações de carcaças em frigoríficos e restringindo o comércio de animais, além do aumento dos custos com serviços veterinários. A TB, além da importância em saúde pública, causa reduções de até 25% na produtividade animal. O vírus da LEB está associado ao desencadeamento de bacterioses oportunistas. Admite-se, que o comprometimento da integridade do sistema imunitário orgânico pela ação imunodepressora do vírus, que penetra e incorpora-se no genoma linfócitário por tempo indeterminado aumenta a susceptibilidade do hospedeiro a outras infecções. Objetivou-se com este trabalho, avaliar a ocorrência da Tuberculose Bovina e Leucose Enzoótica dos Bovinos (LEB), em um rebanho bovino leiteiro. Foram examinados 316 bovinos de ambos os sexos, com idade entre 6 meses e 16 anos, pelo teste alérgico-cutâneo, o exame utilizado foi o Teste Cervical Comparativo (TCC). Para o diagnóstico da LEB, foram avaliados 85 animais, escolhidos aleatoriamente, empregou-se a técnica de Imunodifusão em Gel de Ágar (IDGA) segundo o protocolo do fabricante do antígeno TECPAR, por meio de um substrato de difusão gelatinoso, utilizando o antígeno glicoprotéi

13.
Ars vet ; 31(2)2015.
Article in Portuguese | LILACS-Express | VETINDEX | ID: biblio-1463398

ABSTRACT

A Tuberculose (TB) e a Leucose Enzoótica dos Bovinos (LEB) são doenças infectocontagiosas, caracterizadas pela evolução crônica e pelos prejuízos gerados à pecuária bovina. Essas doenças comprometem o desempenho produtivo dos rebanhos, causando condenações de carcaças em frigoríficos e restringindo o comércio de animais, além do aumento dos custos com serviços veterinários. A TB, além da importância em saúde pública, causa reduções de até 25% na produtividade animal. O vírus da LEB está associado ao desencadeamento de bacterioses oportunistas. Admite-se, que o comprometimento da integridade do sistema imunitário orgânico pela ação imunodepressora do vírus, que penetra e incorpora-se no genoma linfócitário por tempo indeterminado aumenta a susceptibilidade do hospedeiro a outras infecções. Objetivou-se com este trabalho, avaliar a ocorrência da Tuberculose Bovina e Leucose Enzoótica dos Bovinos (LEB), em um rebanho bovino leiteiro. Foram examinados 316 bovinos de ambos os sexos, com idade entre 6 meses e 16 anos, pelo teste alérgico-cutâneo, o exame utilizado foi o Teste Cervical Comparativo (TCC). Para o diagnóstico da LEB, foram avaliados 85 animais, escolhidos aleatoriamente, empregou-se a técnica de Imunodifusão em Gel de Ágar (IDGA) segundo o protocolo do fabricante do antígeno TECPAR, por meio de um substrato de difusão gelatinoso, utilizando o antígeno glicoprotéi

14.
Rev. bras. ciênc. avic ; 17(1): 57-62, jan.-mar. 2015. tab
Article in English | VETINDEX | ID: biblio-1490132

ABSTRACT

Avian salmonellosis and mycoplasmosis are infectious diseases that, in addition of causing lack of flock uniformity, represent a hazard to human health. The objective of the present study was to evaluate the seroprevalence of mycoplasmosis and salmonellosis in commercial broilers, backyard chickens, and spent hens slaughtered at a processing plant with local health inspection in Uberlândia, MG, Brazil. A total of 210 samples were randomly collected at the time of bleeding. Samples were submitted to rapid plate serum agglutination test (RSA) for the classification of Salmonella pullorum, Salmonella gallinarum, Mycoplasma gallisepticum and Mycoplasma synoviae. In order to increase result specificity, mycoplasmosis-positive samples were submitted to hemagglutination inhibition test (HI). No samples presented detectable antibodies against Salmonella pullorum or Salmonella gallinarum in the RSA test. Only Mycoplasma synoviae was detected in 14% of the backyard chickens and 0.74% in commercial broilers, whereas no antibodies were detected in spent hens. The seroprevalence rates found in the present study emphasize the need of keeping chicken flocks free from disease using effective biosafety systems.


Subject(s)
Animals , Chickens/abnormalities , Salmonella Infections/diagnosis , Mycoplasma
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