Imunodetecção de Toxoplasma gondii em tecido placentário de cabras naturalmente infectadas

Mesquita, Emanuela Polimeni de; Oliveira, Júnior Mário Baltazar de; Silva, G.M.; Torres, Samantha; Oliveira, Andréa Alice da Fonseca; Júnior, Valdemiro Amaro Silva; Mota, Rinaldo Aparecido; Amorim, Marleyne José Afonso Accioly Lins

doi:10.1590/1678-4162-9797

Cited by 6 publications

(3 citation statements)

References 24 publications

(18 reference statements)

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“…In the state of Paraná, Brazil, in a study on 179 goats, among which 33 had had abortions, 137 (76.53%) were serologically positive and 11 (33%) of the 33 goats with symptoms were positive in PCR (Ferreira Neto et al 2018). Mesquita et al (2019) reported on an outbreak that occurred in Alagoas in 80 animals, in which, among 27 placenta samples analyzed, 23 (85.2%) were positive in immunohistochemical tests.…”

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confidence: 99%

“…In Brazil, it is likely that many cases of toxoplasmosis in goats go unreported (and thus that the number of cases is underreported), due to the scarcity of studies aimed at diagnosing the causes of abortion and the absence of a standard for analyses on placental and fetal tissues (Mesquita et al 2019). Some authors have even emphasized that outbreaks may be really scarce, as shown in the literature (Moeller 2001).…”

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confidence: 99%

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Dynamics of natural infection by Toxoplasma gondii in goat herds in the semiarid region of northeastern Brazil

Sousa

Batista

Silva

et al. 2021

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This study aimed to describe the transmission of T. gondii in naturally infected goats in the semiarid region of northeastern Brazil, through evaluating the serological status of these animals from one to 12 months of age. Seven goat farms were selected. During the first visit, an epidemiological questionnaire was applied. Blood samples were collected from pregnant goats and from their female offspring every month, to monitor them for anti-T. gondii antibodies, using the indirect fluorescence antibody test (IFAT). Out of 66 pregnant goats evaluated, 47% (31/66) (95% CI: 34.6% − 59.7%) were positive and out of 93 female offspring, 61.3% (57/93) (95% CI: 52.4% − 69.2%) were positive, in at least one month during the evaluation period. Among the positive female offspring, 43.3% (27/57) (95% CI: 39.7% − 56.9%) presented environmental infection and 56.7% (30/57) (95% CI: 43.4% − 66.3 %) probably had only colostral antibodies or vertical transmission. It was observed that 92,6% (25/27) from environmental infections occurred until reproductive age (six months) (p < 0.0001). It was also noted that there is a correlation between the titration of mothers and offspring, until four months of age (p < 0.0001). Large fluctuations in the presence of antibodies were observed among the animals over the months monitored. It can be concluded that the prevalence of anti-T. gondii antibodies within the herds was greater than what has been expressed in specific prevalence studies and that most sheep become infected up to the six months of life in the studied area.

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confidence: 99%

Section: )mentioning

confidence: 99%

Dynamics of natural infection by Toxoplasma gondii in goat herds in the semiarid region of northeastern Brazil

Sousa

Batista

Silva

et al. 2021

Preprint

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“…In spite of the evolution during the last decade, sheep and goat rearing is still negatively influenced by factors including inappropriate health management. Several infectious diseases are still highly prevalent in sheep and goats, especially in the Brazilian Northeast (MESQUITA et al, 2019;RÊGO et al, 2016). Toxoplasmosis is among the main diseases that cause miscarriage in sheep and goats.…”

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confidence: 99%

Serological evidence of Toxoplasma gondii occurrence in naturally infected sheep in the Teresina microregion, Piauí, Brazil

et al. 2021

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Toxoplasmosis is a zoonosis of reproductive nature that is transmitted to humans mainly by ingestion of undercooked meat or drinking oocyte-contaminated water. The slaughter of small ruminants in clandestine slaughterhouses and the presence of companion animals in these locations may be epidemiologically important for the dissemination of the disease. The objective of the present study was to determine toxoplasmosis prevalence by researching anti-Toxoplasma gondii antibodies in meat sheep herds from farms in Teresina microregion, Piauí, Brazil. A total of 450 blood samples were collected from sheep of both sexes, belonging to 28 herds from the 14 municipalities that comprise the microregion. The samples were analyzed by the enzyme-linked immunosorbent assay (ELISA), and the presence of anti-T. gondii antibodies was observed in 62% (279/450) of the animals in all the municipalities and on at least one farm in each municipality. The high occurrence of positive animals is an indication of reproductive problems in these herds, characterizing a problem for both sheep rearing and public health.

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Dynamics of natural infection by Toxoplasma gondii in goat herds in the semiarid region of northeastern Brazil: transitional antibody observation

et al. 2022

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Imunodetecção de Toxoplasma gondii em tecido placentário de cabras naturalmente infectadas

Cited by 6 publications

References 24 publications

Dynamics of natural infection by Toxoplasma gondii in goat herds in the semiarid region of northeastern Brazil

Dynamics of natural infection by Toxoplasma gondii in goat herds in the semiarid region of northeastern Brazil

Serological evidence of Toxoplasma gondii occurrence in naturally infected sheep in the Teresina microregion, Piauí, Brazil

Dynamics of natural infection by Toxoplasma gondii in goat herds in the semiarid region of northeastern Brazil: transitional antibody observation

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