title: Occurrence of antibodies against Neospora caninum and/or Toxoplasma gondii in dogs with neurological signs.
abstract: This study aimed to evaluate occurrences of antibodies against Neospora caninum and Toxoplasma gondii in dogs with neurological signs. Blood samples from 147 dogs were collected: 127 from owned dogs (attended at the Veterinary Teaching Hospital of the Federal University of Paraná (HV-UFPR) and at private veterinary clinics in the city of Curitiba), and 20 from stray dogs found in Curitiba's metropolitan region. The dogs presented one or more of the following neurological signs: seizures, paresis or paralysis, ataxia, behavioral abnormalities, sensory and somatic disorders and chorioretinitis. The samples were analyzed by means of the indirect fluorescent antibody test (IFAT), at a cutoff dilution of 1:50. Out of the 147 samples obtained, 17 (11.56%) were seropositive for N. caninum, 31 (21.08%) for T. gondii and four (2.72%) for both protozoa. Serum titration on the positive animals showed that 54.83% (17/31) and 41.18% (7/17) had titers ≥ 1:200 against T. gondii and N. caninum, respectively. A significant difference in seropositivity for T. gondii (P = 0.021; OR = 2.87; CI = 1.1 > 2.8 > 7.4) was observed between owned dogs (18.11%) and stray dogs (40%). Inclusion of serological tests for neosporosis and toxoplasmosis is recommended in diagnosing neurological diseases in dogs.
authors.affiliation: Programa de Pós-Graduação em Ciências Veterinárias, Universidade Federal do Paraná--UFPR, Rua dos Funcionários, 1540,CEP 80035-050, Curitiba--PR, Brazil.
authors.forename: Nicolle Fridlund
authors.initials: NF
authors.lastname: Plugge
authors.forename: Fabiano Montiani
authors.initials: FM
authors.lastname: Ferreira
authors.forename: Rosária Regina Tesoni de Barros
authors.initials: RR
authors.lastname: Richartz
authors.forename: Adriana
authors.initials: A
authors.lastname: de Siqueira
authors.forename: Rosangela Locatelli
authors.initials: RL
authors.lastname: Dittrich
mesh_terms: D000818:Animals; D000913:Antibodies, Protozoan / Q000097:blood*; D004283:Dog Diseases / Q000097:blood* / Q000453:epidemiology; D004285:Dogs; D018688:Neospora / Q000276:immunology*; D009422:Nervous System Diseases / Q000097:blood / Q000453:epidemiology / Q000662:veterinary*; D016036:Seroepidemiologic Studies; D014122:Toxoplasma / Q000276:immunology*
chemical_list: D000913:Antibodies, Protozoan