Genetic characterization of Toxoplasma gondii isolates from eared doves (Zenaida auriculata) in Brazil

Barros, Luiz Daniel de; Taroda, Alessandra; Zulpo, Dauton Luiz; Cunha, Ivo Alexandre Leme da; Sammi, Ana Sue; Cardim, Sérgio Tosi; Miura, Ana Carolina; Su, Chunlei; Machado, Rosangela Zacarias; Vidotto, Odilon; Garcia, João Luís

doi:10.1590/s1984-29612014073

Cited by 32 publications

(17 citation statements)

References 29 publications

(27 reference statements)

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“…gondii antibodies may be due to the consumption of infected vertebrates, as locally detected in 12/46 (26.08%) eared doves by serology [71] and 4/16 (25.00%) rats by PCR [70]. Similar foodborne characteristics may have been the origin of the positive association with trash-filled yards, since failure of yard maintenance may directly provide prolonged T .…”

Section: Discussionmentioning

confidence: 99%

Spatial and simultaneous representative seroprevalence of anti-Toxoplasma gondii antibodies in owners and their domiciled dogs in a major city of southern Brazil

et al. 2017

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Toxoplasmosis, caused by Toxoplasma gondii, has traditionally been considered an important water and foodborne protozoonosis with important public health considerations. Although felids play a well-established role as definitive hosts, canine epidemiological involvement in the parasite’s life cycle remains questionable and controversial. The increasing closeness of the human-dog bond, particularly seen in urban settings, has been recognized as a historically unprecedented worldwide movement. Sharing daily lives in the same households, dogs may be exposed to similar associated risks of T. gondii infection as their owners. Thus, epidemiological assessment of the intra-domiciled environment, especially among socio-economically different human populations, may provide novel information regarding the actual role of dogs in animal and human toxoplasmosis. Despite spatial approaches being recently used for other water and foodborne diseases, no study has been conducted on the simultaneous spatial seroprevalence of both human and animal IgG anti-T. gondii antibodies in urban areas of major cities. Accordingly, the aim of the present study was to assess the seroprevalence and associated variables of Toxoplasma infection in owners and their domiciled dogs in Londrina, southern Brazil. Human and canine seroprevalence rates and variables associated with seroprevalence were investigated through representative random sampling among 564 households, which included 597 owners and 729 dogs. Overall, statistically significant differences between the seroprevalence of human and dog anti-T. gondii antibodies were found by Immunofluorescence Antibody Testing in 248/597 (41.54%) owners and 119/729 (16.32%) dogs. Through multiple analysis, significant concomitant variables for seropositivity of household individuals (people and dogs) were determined, including public sewer service, yard cleaning frequency, and having a dirty yard. Although no statistically significant multiple logistic model was observed among owners, univariate analysis detected associations with monthly income, soil contact, and occupation. Among dogs, the absence of other dogs and the absence of a dirty yard were concomitant significantly protective associated factors. Age differences between seropositive and seronegative individuals was significant only for human beings, with the median age of negative individuals significantly higher than positive individuals. Although no spatial clusters were identified for humans or residences, a significant cluster was identified for dogs. In conclusion, characteristics of urban toxoplasmosis may include significantly higher owner seroprevalence than their owned dogs, with canine seroprevalence directly associated with having more dogs and a dirty backyard, and spatial differences in both human and dog exposures. Although not a good indicator for human foodborne diseases, dogs may be a reliable sentinel for environmental infection. Moreover, such a holistic approach may provide crucial information for more focused prevention and...

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Section: Discussionmentioning

confidence: 99%

Spatial and simultaneous representative seroprevalence of anti-Toxoplasma gondii antibodies in owners and their domiciled dogs in a major city of southern Brazil

et al. 2017

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“…Toxoplasma gondii is an important zoonotic intracellular apicomplexan protozoan that can infect humans and nearly all warm-blooded animals worldwide (DUBEY, 2010;MONTOYA & LIESENFELD, 2004;TENTER et al, 2000;SOUSA et al, 2014;CERRO et al, 2014;BARROS et al, 2014). Humans and animals can be infected mainly through the ingestion of tissue cysts from undercooked or raw meat or through the consumption of food or water contaminated with sporulated oocysts shed by infected felids (KIJLSTRA & JONGERT, 2008).…”

Section: Introductionmentioning

confidence: 99%

The prevalence of antibodies to Toxoplasma gondii in horses in Changji Hui Autonomous Prefecture, Xinjiang, northwestern China

Wang

Zhou

Chen

et al. 2015

Rev. Bras. Parasitol. Vet.

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Toxoplasmosis is a worldwide zoonosis caused by Toxoplasma gondii, which can infect warm-blooded animals and humans. The present study was performed to investigate the seroprevalence of T. gondii in horses in Xinjiang, northwestern China. A total of 637 blood samples were collected from seven regions in Changji Hui Autonomous Prefecture, Xinjiang in 2011 and assayed for T. gondii antibodies using the modified agglutination test (MAT). Risk factors (age, gender, and region) related to seroprevalence were determined by a multivariate logistic regression analysis. A total of 200 horses (31.4%, 95% CI 27.79-35.00) were seropositive for T. gondii. Age, gender, and region present no association with seroprevalence (p>0.05) in the logistic regression analysis. The results indicated that T. gondii is widely prevalent in horses in Xinjiang, northwestern China, representing a serious threat to animal and human health. Therefore, more careful measures should be performed to control and prevent T. gondii infection in horses from Xinjiang, northwestern China.Keywords: Toxoplasma gondii, horse, seroprevalence, modified agglutination test (MAT), China. ResumoA toxoplasmose é uma zoonose global causada pelo Toxoplasma gondii, o qual pode infectar animais de sangue quente e seres humanos. Este estudo foi realizado com o objetivo de investigar a soroprevalência em cavalos para T. gondii, na região de Xinjiang, no Noroeste da China. Em 2011, foram recolhidas 637 amostras de sangue em sete distritos da Prefeitura Autônoma de Changji Hui do Xinjiang, as quais foram testadas para a presença de anticorpos, utilizando-se o teste de aglutinação modificado (MAT). Foram estimados fatores de risco relacionados com a soroprevalência (idade, sexo e distrito), através de uma análise de regressão logística multivariada. Um total de 200 equinos (31,4%, 95% IC 27,79 -35,00) foi positivo para T. gondii. Idade, sexo e região estudada não apresentaram associação com a soroprevalência (p>0,05) na análise de regressão logística. Os resultados revelam que a infecção por T. gondii tem uma prevalência generalizada em todo o território de Xinjiang, no Noroeste da China, constituindo uma séria ameaça à saúde de animais e de humanos. Consequentemente, propõe-se que sejam adotadas medidas reforçadas para o controle e prevenção da infecção de cavalos por T. gondii, no Xinjiang, Noroeste da China.Palavras-chave: Toxoplasma gondii, cavalo, soroprevalência, teste de aglutinação modificado (MAT), China.

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“…In 2013, Cong detected house sparrows toxoplasmosis in China, Khademvatan detected birds toxoplasmosis in southwest of Iran and Ortega found pigs toxoplasmosis in Mexico [22][23][24][25][26]. Most of the [26][27][28][29][30]. In recent years have not perform any studies to detect rodents and cattle toxoplasmosis at the same time in Golestan area.…”

Section: Discussionmentioning

confidence: 99%

“…This study showed important role of rodents and cattle in dissemination of toxoplasmosis in humid area. In this study we showed that the SAG1 gene was very important marker to detection of abundance of zoonotic toxoplasmosis and brain or heart tissue was main tissues to follow SAG1 gene from Tachyzoites of Toxoplasma parasite, also the rodents and cattle were very important reservoirs in dissemination of toxoplasmosis to human in Golestan area, northeast of Iran [26][27][28][29][30].…”

Section: Discussionmentioning

confidence: 99%

Abundance Detection and Molecular Characterization of Toxoplasma gondii by SAG1 Gene in Rodents and Cattle of Golestan Province, Northeast of Iran

Sadeghi¹,

Bahadory²

2017

J Vet Sci Technol

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Background: Toxoplasma parasite is from Toxoplasmatidea family that initially was seen in ctinodactylus gondii rodent. Toxoplasma parasites that extracted from different rodents are same in immunologic and morphologic characteristics but have differences in pathogenicity and genotypes in mice. The rodents and cattle are most reservoir hosts in environment that by attention of human environment vicinity to cattle and rodent's environment causes Toxoplasma dispersion in that area. The aim of this study was Molecular detection of Toxoplasma gondii in rodents and cattle of Golestan province, northeast of Iran.

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Genetic characterization of Toxoplasma gondii isolates from eared doves (Zenaida auriculata) in Brazil

Cited by 32 publications

References 29 publications

Spatial and simultaneous representative seroprevalence of anti-Toxoplasma gondii antibodies in owners and their domiciled dogs in a major city of southern Brazil

Spatial and simultaneous representative seroprevalence of anti-Toxoplasma gondii antibodies in owners and their domiciled dogs in a major city of southern Brazil

The prevalence of antibodies to Toxoplasma gondii in horses in Changji Hui Autonomous Prefecture, Xinjiang, northwestern China

Abundance Detection and Molecular Characterization of Toxoplasma gondii by SAG1 Gene in Rodents and Cattle of Golestan Province, Northeast of Iran

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