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1.
J. venom. anim. toxins incl. trop. dis ; 20: 1-3, 04/02/2014. tab
Article in English | LILACS, VETINDEX | ID: biblio-1484583

ABSTRACT

The state of Pará encompasses 26% of Brazilian Amazon where an enormous diversity of arboviruses has been found. This study aimed to assess the prevalence and distribution of hemagglutination-inhibition antibodies against antigens of six Flavivirus (yellow fever virus, Ilheus virus, Saint Louis encephalitis virus, Cacipacore virus, Bussuquara virus and Rocio virus) in water buffaloes in Pará state, Brazil. The prevalence of antibodies in these farm animals is important to determine the circulating arboviruses.


Subject(s)
Animals , Antibodies/analysis , Yellow Fever/pathology , Flavivirus , Hemagglutination/physiology , Buffaloes/classification
2.
Article in English | LILACS | ID: lil-724694

ABSTRACT

The state of Pará encompasses 26% of Brazilian Amazon where an enormous diversity of arboviruses has been found. This study aimed to assess the prevalence and distribution of hemagglutination-inhibition antibodies against antigens of six Flavivirus (yellow fever virus, Ilheus virus, Saint Louis encephalitis virus, Cacipacore virus, Bussuquara virus and Rocio virus) in water buffaloes in Pará state, Brazil. The prevalence of antibodies in these farm animals is important to determine the circulating arboviruses.


Subject(s)
Animals , Antibodies/analysis , Flavivirus , Yellow Fever/pathology , Hemagglutination/physiology , Buffaloes/classification
3.
Pesqui. vet. bras ; 33(4): 431-434, Apr. 2013. tab
Article in Portuguese | LILACS | ID: lil-675818

ABSTRACT

Para comparar dois testes sorológicos na detecção de anticorpos anti-Neospora caninum em soros sanguíneos de búfalas, foram coletados amostras de 288 búfalas entre dois a dez anos de idade. Para identificar a presença de imunoglobulina G anti-N. caninum utilizou-se à reação de imunofluorescência indireta (RIFI), tendo o título 200 como ponto de corte, e o Ensaio Imunoenzimático indireto (ELISA-indireto), considerando-se positiva as amostras que obtiveram razão S/P>0,5. Observaram-se 153 (53,12%) animais soropositivos para N. caninum, através da RIFI, enquanto que 50 (17,36%) animais foram reagentes no ELISA. A ocorrência de anticorpos anti-N. caninum demonstram que o parasito esta circulando entre búfalas criadas no estado do Pará, sendo que ambos os teste de RIFI e ELISA podem ser utilizados para diagnosticar imunoglobulinas contra este agente. No entanto observou-se uma fraca correlação (Kappa=0,36) entre ambos os testes, considerando a RIFI como padrão ouro.


To compare two serologic tests for detection of antibodies against Neospora caninum in sera from buffaloes, samples were collected from 288 buffaloes of 2 to 10 years of age. To identify the presence of IgG, anti-N. caninum was used for the indirect immunofluorescence assay (IFAT), with title 200 as the cutoff, and for the immunoenzymatic test (indirect ELISA), considering as positive samples with ratio S/P >0.5. There were 153 (53.12%) animals positive for N. caninum by IFAT, whilst 50 (17.36%) animals were reactive in ELISA. The presence of antibodies anti-N. caninum demonstrates that the parasite is circulating among buffaloes raised in Pará State, Brazil. ELISA and IFAT tests could be used to diagnose immunoglobulins against this agent. However there was a weak correlation (Kappa = 0.36) between both tests, considering the IFAT as the gold standard.


Subject(s)
Animals , Cattle , Enzyme-Linked Immunosorbent Assay/veterinary , Neospora/isolation & purification , Fluorescent Antibody Technique, Indirect/veterinary , Diagnostic Techniques and Procedures/veterinary
4.
Pesqui. vet. bras ; 30(5): 443-446, maio 2010. tab
Article in Portuguese | LILACS | ID: lil-554295

ABSTRACT

Para determinar a ocorrência de anticorpos IgG anti-Neospora caninum e Toxoplasma gondii em 14 unidades produtivas de búfalos, situadas em 13 municípios no estado do Pará, foram coletadas amostras de soro sanguíneo de 374 fêmeas adultas. Os soros foram submetidos à reação de imunofluorescência indireta (RIFI), utilizando-se os títulos 200 e 64, respectivamente como ponto de corte para N. caninum e T. gondii. Obteve-se 153 (40,9 por cento) de animais soropositivos para N. caninum com 100 por cento das propriedades com focos da infecção, enquanto que quatro búfalas (1,1 por cento) foram soropositivas em quatro fazendas para T. gondii e uma búfala (0,27 por cento) foi soropositiva para ambos parasitos. A presença de anticorpos é um indicativo da circulação desses protozoários em búfalos das propriedades estudadas, representando uma fonte de infecção para outros animais, assim como o possível envolvimento em distúrbios reprodutivos nessa espécie.


To investigate the occurrence of antibodies IgG anti-Neospora caninum and Toxoplasma gondii, blood samples were collected from 374 adult female water buffaloes originated from 14 production units located in 13 counties of the state of Pará. The sera were subjected to indirect fluorescent antibody (IFA), using titers of 200 and 64 as IFA cut off points for N. caninum and T. gondii, respectively. Hundred and fifty three (40.9 percent) buffaloes were sero-positive for N. caninum, with 100 percent of the properties being sources of infection. Four buffaloes (1.1 percent) in four farms were seropositive for T. gondii, and one buffalo cow (0.27 percent) was seropositive for the two parasites. The presence of antibodies indicates that these protozoan parasites are circulating among buffaloes from the properties studied, representing a source of infection to other animals, as well as a possible cause of reproductive disorders in this species.


Subject(s)
Animals , Female , Buffaloes/blood , Neospora/parasitology , Serology/methods , Toxoplasma/parasitology , Antibodies/analysis , Fluorescent Antibody Technique, Indirect/veterinary
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