Toxoplasma gondii infection in cats from São Paulo state, Brazil: Seroprevalence, oocyst shedding, isolation in mice, and biologic and molecular characterization

Pena, Hilda Fátima Jesus; Soares, Rodrigo Martins; Amaku, Marcos; Dubey, J. P.; Gennari, Solange Maria

doi:10.1016/j.rvsc.2005.09.007

Cited by 116 publications

(98 citation statements)

References 28 publications

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“…In the present study it was observed that the percentage of isolation increased with the antibody titers as found previously with chickens, cats, and sheep (Dubey et al, 2002;Pena et al, 2006;Ragozo et al, 2008;de Oliveira et al, 2009).…”

Section: Discussionsupporting

confidence: 90%

Seroprevalence and isolation of Toxoplasma gondii from free-range chickens from Espírito Santo state, southeastern Brazil

Beltrame

Pena

Ton

et al. 2012

Veterinary Parasitology

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Section: Discussionsupporting

confidence: 90%

Seroprevalence and isolation of Toxoplasma gondii from free-range chickens from Espírito Santo state, southeastern Brazil

Beltrame

Pena

Ton

et al. 2012

Veterinary Parasitology

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“…These results are similar to the mouse-virulent isolates from chickens (Dubey et al, 2002;Brandão et al, 2006;Dubey, Gennari et al, 2006;Dubey, Applewhaite et al, 2007), cats (Dubey et al, 2004;Pena et al, 2006), pigs (Dos Santos et al, 2005;Brandão et al, 2006), dogs (Da Silva et al, 2005;Brandão et al, 2006;Dubey, Gennari et al, 2007), and goats (Cavalcante et al, 2007) from Brazil. In contrast, most of the T. gondii isolates from animals in Europe, Asia, and North America are nonpathogenic for mice (Dubey, Applewhaite et al, 2007).…”

Section: Discussionsupporting

confidence: 86%

Isolation of Toxoplasma gondii from Capybaras (Hydrochaeris hydrochaeris) from São Paulo State, Brazil

Yai

Ragozo²,

Aguiar³

et al. 2008

Journal of Parasitology

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The capybara (Hydrochaeris hydrochaeris) is a large rodent used for human consumption in certain areas of South America. In the present study, viable Toxoplasma gondii was isolated for the first time from this host. Antibodies to T. gondii were assayed in the sera of 64 capybaras from 6 counties of São Paulo State, Brazil, using the modified agglutination test (MAT, Ն1:25 dilution) and the indirect fluorescent antibody test (IFAT, Ն1:16 dilution), and antibodies were found in 48 (75%) by MAT, and 49 (76.6%) by IFAT. Samples of brain, heart, and tongue of 40 seropositive capybaras were pooled, digested in pepsin, and bioassayed in mice. Toxoplasma gondii was isolated from tissue homogenates of 36 capybaras, and the isolates were designated TgCyBr1-36. Most isolates were lethal to mice; 17 of the 36 isolates killed 100% of infected mice, 11 isolates caused mortality in 25-90% of infected mice, and 8 isolates were nonpathogenic to mice. Results indicate that asymptomatic capybaras can harbor mouse-virulent T. gondii, and hence they can serve as a source of infection for humans.

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“…The high rate of seropositivity among some feline populations can be explained by environmental contamination by oocysts, and consequently, elevated concentration of infective agents in food and water, which may reflect high rates of infection with T. gondii in intermediate hosts (PENA et al, 2006). However, it needs to be borne in mind that, contrary to common belief, immunocompetent cats only eliminate oocysts in their feces over the course of primary infection (3-20 days in their lives).…”

Section: Introductionmentioning

confidence: 96%

Seroprevalence of Toxoplasma gondii in cats (Felis catus, Linnaeus 1758) living in Lima, Peru

Cerro

Rubio

Pinedo

et al. 2014

Rev. Bras. Parasitol. Vet.

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Seroprevalence of Toxoplasma gondii in cats (Felis catus, Linnaeus 1758) living in Lima, Peru AbstractThe aim of this study was to determine the frequency of infection by T. gondii in cats, by examining serum and fecal samples from animals attended at veterinary clinics in the Metropolitan Region of Lima, Peru. We collected and analyzed 154 cat serum samples and 50 fecal samples, regardless of the age, gender or breed. In parallel with the sample collections, the owners answered an epidemiological questionnaire that investigated the following variables: age group, gender, lifestyle (confined, semi-confined or free-living animals), feeding and hunting habits. The serum and fecal samples were analyzed using indirect hemagglutination (IHA) and coproparasitological tests, respectively. IHA showed that the frequency of cat exposure to T. gondii was 11%. Age and gender showed no association with exposure to the parasite. Exposure among the cats was associated with hunting (x 2 = 4.98, p = 0.016) and feeding habits (x 2 = 13.34, p = 0.001): those fed with raw meat were more exposed than those fed with commercial cat food (x 2 = 9.50, p = 0.004) or with homemade food (x 2 = 4.1, p = 0.027). The frequency of cats diagnosed in the chronic phase of T. gondii infection was 88% (15/17). No T. gondii oocysts were found in any of the 50 fecal samples examined.

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Toxoplasma gondii infection in cats from São Paulo state, Brazil: Seroprevalence, oocyst shedding, isolation in mice, and biologic and molecular characterization

Cited by 116 publications

References 28 publications

Seroprevalence and isolation of Toxoplasma gondii from free-range chickens from Espírito Santo state, southeastern Brazil

Seroprevalence and isolation of Toxoplasma gondii from free-range chickens from Espírito Santo state, southeastern Brazil

Isolation of Toxoplasma gondii from Capybaras (Hydrochaeris hydrochaeris) from São Paulo State, Brazil

Seroprevalence of Toxoplasma gondii in cats (Felis catus, Linnaeus 1758) living in Lima, Peru

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