The relationship between seropositivity and tissue cysts in sheep naturally infected with Toxoplasma gondii

Yıldız, Kader; Kul, Oğuz; Gökpınar, Sami; Atmaca, Hasan; Gençay, Yılmaz Emre; GAZYAĞCI, Aycan Nuriye; Babür, Cahit; GÜRCAN, İsmayil Safa

doi:10.3906/vet-1308-49

Cited by 17 publications

(11 citation statements)

References 18 publications

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“…The systematic review process identified 29 studies, presented in 24 papers, dealing with the direct identification of T . gondii in sheep meat [ 31 , 35 , 37 – 39 , 43 , 59 , 62 , 71 – 84 ]. General information about the 29 studies retrieved is presented in Table 9 .…”

Section: Resultsmentioning

confidence: 99%

Investigating the Determinants of Toxoplasma gondii Prevalence in Meat: A Systematic Review and Meta-Regression

et al. 2016

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BackgroundToxoplasma gondii is one of the most widespread parasites in humans and can cause severe illness in immunocompromised individuals. However, its role in healthy people is probably under-appreciated. The complex epidemiology of this protozoan recognizes several infection routes but consumption of contaminated food is likely to be the predominant one. Among food, consumption of raw and undercooked meat is a relevant route of transmission, but the role of different meat producing animal species and meats thereof is controversial.ObjectivesThe aim of the present work is to summarize and analyse literature data reporting prevalence estimates of T. gondii in meat animals/meats.Data SourcesWe searched Medline, Web of Science, Science Direct (last update 31/03/2015).Eligibility CriteriaRelevant papers should report data from primary studies dealing with the prevalence of T. gondii in meat from livestock species as obtained through direct detection methods. Meta-analysis and meta-regression were performed.ResultsOf 1915 papers screened, 69 papers were included, dealing mainly with cattle, pigs and sheep. Pooled prevalences, based on random-effect models, were 2.6% (CI95 [0.5–5.8]) for cattle, 12.3% (CI95 [7.6–17.8]) for pigs and 14.7% (CI95 [8.9–21.5]) for sheep. Due to the high heterogeneity observed, univariable and multivariable meta-regression models were fitted showing that the geographic area for cattle (p = 0.032), the farming type for pigs (p = 0.0004) and the sample composition for sheep (p = 0.03) had significant effects on the prevalences of Toxoplasma detected/estimated. Moreover, the role of different animal species was dependent on the geographic location of animals’ origin.LimitationsLimitations were due mainly to a possible publication bias.Conclusions and ImplicationsThe present work confirms the role of meat, including beef, as T. gondii sources, and highlights the need for a control system for this parasite to be implemented along the meat production chain. Moreover, consumer knowledge should be strengthened in order to reduce the impact of disease.

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Section: Resultsmentioning

confidence: 99%

Investigating the Determinants of Toxoplasma gondii Prevalence in Meat: A Systematic Review and Meta-Regression

et al. 2016

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“…One out of every three farmworker families consumed the infected meat of their animals. Consumption of infected animal meat might be a threat for toxoplasmosis transmission; it has been reported that tissue cysts are mostly detected in the intercostal, leg, and diaphragmatic muscles of sheep and poultry, which are frequently consumed by humans and have been implicated as an important source of toxoplasmosis [20,21] In this study, we found that increasing age was associated with the seropositivity of T. gondii, which was reported previously in other studies [22][23][24][25][26][27]. This might be explained by longer exposure to risk factors and by the transmission methods of T. gondii.…”

Section: Discussionmentioning

confidence: 99%

Prevalence and associated risk factors of Toxoplasma gondii in female farmworkers of southeastern Turkey

Doni

Şimşek

Gürses

et al. 2015

J Infect Dev Ctries

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Introduction: There are a limited number of studies of the agricultural population about the prevalence of Toxoplasma gondii (T. gondii) infection throughout the world. The aim of this study was to determine the prevalence and risk factors of toxoplasmosis in female farmworkers in the southeastern region of Turkey. Methodology: The optimum sample size was determined using the Epi Info Program, and blood samples were collected from 684 women of reproductive age. Serum samples were analyzed by qualitative and quantitative methods for anti-T. gondii IgG and IgM antibodies with a commercially available enzyme immunoassay. Questionnaires through which socio-demographic information was collected were applied during face-to-face interviews of subjects who gave their consent to participate in the study. Crude odds ratios (ORs) and 95% confidence intervals (CIs) were calculated, and Chi-square analyses and logistic regression were performed. Results: Of the 684 women, the prevalence of toxoplasmosis was determined to be 58.3% and 1% for IgG and IgM, respectively. Employment as a seasonal farmworker, increasing age, and having had three or more pregnancies were found to be the crucial associated risk factors that affect the prevalence of T. gondii infection (p < 0.05). In contrast to these, the provincial development level was found to be a confounding factor. There was no association between toxoplasmosis and household size, education attainment, and poverty in the bivariate analyses. Conclusions: The findings show that control and serological screening programs should be implemented nationwide in Turkey for the reliable and fast detection of congenital Toxoplasma infections.

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“…Türkiye'de koyunlarda T. gondii enfeksiyonlarının yaygınlığına ilişkin çeşitli seroprevalans çalışmaları bulunmaktadır (1,3,5,31,32,40). Ülkemizde hem çiftlik hayvanlarında hem de insanlarda toksoplasmozis seropozitifliği giderek arttığı izlenmektedir (25,41). Buna ilişkin olarak yakın gelecekte muhtemel klinik toksoplasmosis olgularının önlenmesine yönelik yeni stratejilerin belirlenmesi gerekliliğinin ortaya çıkacağı şüphesizdir.…”

Section: Toxoplasma Gondii Izolatlarının Tiplendirilmesinde Polimerazunclassified

Genotyping of Toxoplasma gondii isolates originated from sheep by multilocus PCR-RFLP

Gençay¹,

Gökpınar²,

Babür³

et al. 2019

Ankara Üniversitesi Veteriner Fakültesi Dergisi

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Bu çalışmada doğal enfekte koyunlardan elde edilen Toxoplasma gondii izolatlarının (n:10) genotiplendirilmesi amaçlanmıştır. Bu amaçla T. gondii izolatlarının dokuz lokusu (SAG1, SAG2, c22-8, L358, 5'-SAG2, 3'-SAG2, SAG3, BTUB and PK1) multipleks multilokus nested PCR-RFLP yöntemi ile amplifiye edilmiştir. Bunun sonucunda koyun orijinli T. gondii izolatlarının bir dizi lokusta birden çok allel barındırdığı tespit edilmiştir. Koyun izolatları (n: 8) iki lokusta (alt.SAG2 ve SAG3) tip II ve III, bir lokusta (c22-8) klonal tip II, bir lokusta (5'-SAG2) tip I ve III, bir lokusta (L358) I ve II ve bir lokusta (3'-SAG2) ise tip I/III alleli göstermiştir. Bir koyun izolatı; iki lokusta (alt.SAG2 ve L358) tip I, bir lokusta (c22-8) tip II, bir lokusta (BTUB) tip I ve II, bir lokusta (3'-SAG2) ise I/III alleli göstermiştir. Sonuncu koyun izolatı ise üç lokusta (SAG1, alt.SAG2 ve SAG3) tip III, iki lokusta (c22-8 ve L358) tip II, bir lokusta (3'-SAG2) I/III, bir lokusta (BTUB) ise tip I ve II allelleri göstermiştir. Bu çalışma Türkiye'de koyunlarda T. gondii'nin genotiplendirilmesine ilişkin ilk rapordur. Genotiplendirmeye yönelik olarak parazite arakonaklık yapan farklı hayvanlardan ve çeşitli bölgelerden elde edilen izolatlar üzerinde çalışılması Türkiye'de T. gondii'nin bulaşma yolları ve tipleri hakkında önemli bilgiler elde etmeye katkı sağlayacaktır. Anahtar sözcükler: Genotiplendirme, koyun, multilokus nested PCR RFLP, Toxoplasma gondii, Türkiye Genotyping of Toxoplasma gondii isolates originated from sheep by multilocus PCR-RFLP

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The relationship between seropositivity and tissue cysts in sheep naturally infected with Toxoplasma gondii

Cited by 17 publications

References 18 publications

Investigating the Determinants of Toxoplasma gondii Prevalence in Meat: A Systematic Review and Meta-Regression

Investigating the Determinants of Toxoplasma gondii Prevalence in Meat: A Systematic Review and Meta-Regression

Prevalence and associated risk factors of Toxoplasma gondii in female farmworkers of southeastern Turkey

Genotyping of Toxoplasma gondii isolates originated from sheep by multilocus PCR-RFLP

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