PESQUISA VETERINÁRIA BRASILEIRA

Abstract in English:

ABSTRACT.- Ribeiro C.M., Matos A.C., Azzolini T., Bones E.R., Wasnieski E.A., Richini-Pereira V.B., Lucheis S.B. & Vidotto O. 2017. Molecular epidemiology of Anaplasma platys, Ehrlichia canis and Babesia vogeli in stray dogs in Paraná, Brazil. Pesquisa Veterinária Brasileira 37(2):129-136. Faculdade Educacional de Dois Vizinhos, União de Ensino do Sudoeste do Paraná, Av. Presidente Kennedy 2601, Dois Vizinhos, PR 85660-000, Brazil. E-mail: clau.mribeiro@hotmail.com Hemoparasitic infections are tick-borne diseases, which affect animals and humans. Considering the importance of canine hemoparasitic infections in veterinary clinics, this study aimed to determine the occurrence of Anaplasma platys, Ehrlichia canis and Babesia vogeli in blood samples from 182 dogs not domiciled in the city of Pato Branco, southwestern region of Paraná State, Brazil, using polymerase chain reaction (PCR). The prevalence of A. platys and B. vogeli was 32.9% and 10.9% respectively, and A. platys infection prevailed (p<0.001). The number of dogs positive for A. platys was larger in Winter (p<0.05). All blood samples were negative for E. canis. In the dogs, infestation by Amblyomma cajennense predominated over that by Rhipicephalus sanguineus (p<0.001); but there was no significant association between PCR and the variables presence of ticks, sex and age. Dogs infected by A. platys and B. vogeli showed thrombocytopenia, lymphopenia and leukocytosis; but there was no correlation between such hematological changes and infection by hemoparasites. This appears to be the first molecular study that demonstrates the existence of A. platys and B. vogeli in dogs from the southwestern region of Paraná.

• Anaplasma platys Ehrlichia canis Babesia vogeli ehrlichiosis babesiosis anaplasmose erliquiose babesiose

Abstract in Portuguese:

RESUMO.- Ribeiro C.M., Matos A.C., Azzolini T., Bones E.R., Wasnieski E.A., Richini-Pereira V.B., Lucheis S.B. & Vidotto O. 2017. Molecular epidemiology of Anaplasma platys, Ehrlichia canis and Babesia vogeli in stray dogs in Paraná, Brazil. [Epidemiologia molecular de Anaplasma platys, Ehrlichia canis e Babesia vogeli em cães não domiciliados do Paraná.] Pesquisa Veterinária Brasileira 37(2):129-136. Faculdade Educacional de Dois Vizinhos, União de Ensino do Sudoeste do Paraná, Av. Presidente Kennedy 2601, Dois Vizinhos, PR 85660-000, Brazil. E-mail: clau.mribeiro@hotmail.com As hemoparasitoses são enfermidades transmitidas por carrapatos que afetam os animais e os humanos. Considerando a importância das hemoparasitoses caninas na clínica médica veterinária, este estudo objetivou determinar a ocorrência de Anaplasma platys, Ehrlichia canis e Babesia vogeli em amostras de sangue de 182 cães não domiciliados do município de Pato Branco, região sudoeste paranaense, Brasil, utilizando a reação em cadeia da polimerase (PCR). A prevalência de A. platys e B. vogeli foi de 32,9% e 10.9%, respectivamente, predominando a infecção por A. platys (p<0,001). Constatou-se um maior número de cães positivos para A. platys no período do inverno (p<0.05). Todas as amostras de sangue foram negativas para E. canis. Nos cães, a infestação por Amblyomma cajennense prevaleceu sobre a infestação por Rhipicephalus sanguineus (p<0,001), mas não foi observada associação significativa entre a PCR e as variáveis presença de carrapatos, sexo e idade. Cães infectados por A. platys e B. vogeli apresentaram trombocitopenia, linfopenia e leucocitose, porém não houve correlação destas alterações hematológicas com a infecção pelos hemoparasitas. Este é o primeiro estudo molecular que demonstra a existência de A. platys e de B. vogeli em cães da região sudoeste paranaense.

Abstract in English:

Minho A.P., Navarro I.T., Freire R.L., Vidotto O., Gennari S.M., Marana E.M. & Garcia J.L. 2004. Evaluation of the indirect fluorescent antibody test and modified agglutination test for detection of antibodies against Toxoplasma gondii in experimentally infected pigs. Pesquisa Veterinária Brasileira 24(4):199-202. Depto Medicina Veterinária Preventiva, Universidade Estadual de Londrina, Cx. Postal 6001, Londrina, PR 86050-970, Brazil. E-mail: italmar@uel.br The study determined the sensitivity and specificity of the indirect fluorescent antibody test (IFAT) and modified agglutination test (MAT) for anti-Toxoplasma gondii antibody detection by analyzing sera from 46 experimentally infected pigs. Values for sensitivity were 95.7% (confidence interval 95%: 84.0-99.2%) and for specificity 97.8% (confidence interval 95%: 87.0-99.9%) in both tests. There was an optimum agreement of results between IFAT and MAT evidenced by a Kappa test of 0.86. These results validate these tests for the detection of T. gondii infection in pigs. IFAT and MAT despite methodologies with different characteristics and readings have similar accuracy in pig serum samples.

• Toxoplasma gondii swine antibodies serology indirect fluorescent antibody test (IFAT) modified agglutination test (MAT).

Abstract in Portuguese:

Minho A.P., Navarro I.T., Freire R.L., Vidotto O., Gennari S.M., Marana E.M. & Garcia J.L. 2004. Evaluation of the indirect fluorescent antibody test and modified agglutination test for detection of antibodies against Toxoplasma gondii in experimentally infected pigs. Pesquisa Veterinária Brasileira 24(4):199-202. Depto Medicina Veterinária Preventiva, Universidade Estadual de Londrina, Cx. Postal 6001, Londrina, PR 86050-970, Brazil. E-mail: italmar@uel.br The study determined the sensitivity and specificity of the indirect fluorescent antibody test (IFAT) and modified agglutination test (MAT) for anti-Toxoplasma gondii antibody detection by analyzing sera from 46 experimentally infected pigs. Values for sensitivity were 95.7% (confidence interval 95%: 84.0-99.2%) and for specificity 97.8% (confidence interval 95%: 87.0-99.9%) in both tests. There was an optimum agreement of results between IFAT and MAT evidenced by a Kappa test of 0.86. These results validate these tests for the detection of T. gondii infection in pigs. IFAT and MAT despite methodologies with different characteristics and readings have similar accuracy in pig serum samples.