Literature DB >> 21051148

Multi-locus DNA sequencing of Toxoplasma gondii isolated from Brazilian pigs identifies genetically divergent strains.

E Frazão-Teixeira1, N Sundar, J P Dubey, M E Grigg, F C R de Oliveira.   

Abstract

Five Toxoplasma gondii isolates (TgPgBr1-5) were isolated from hearts and brains of pigs freshly purchased at the market of Campos dos Goytacazes, Northern Rio de Janeiro State, Brazil. Four of the five isolates were highly pathogenic in mice. Four genotypes were identified. Multi-locus PCR-DNA sequencing showed that each strain possessed a unique combination of archetypal and novel alleles not previously described in South America. The data suggest that different strains circulate in pigs destined for human consumption from those previously isolated from cats and chickens in Brazil. Further, multi-locus PCR-RFLP analyses failed to accurately genotype the Brazilian isolates due to the high presence of atypical alleles. This is the first report of multi-locus DNA sequencing of T. gondii isolates in pigs from Brazil.
Copyright © 2010 Elsevier B.V. All rights reserved.

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Year:  2010        PMID： 21051148      PMCID： PMC3141217          DOI： 10.1016/j.vetpar.2010.09.030

Source DB:  PubMed          Journal:  Vet Parasitol        ISSN： 0304-4017            Impact factor:   2.738


  32 in total

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6.  Biological and genetic characterisation of Toxoplasma gondii isolates from chickens (Gallus domesticus) from São Paulo, Brazil: unexpected findings.

Authors:  J P Dubey; D H Graham; C R Blackston; T Lehmann; S M Gennari; A M A Ragozo; S M Nishi; S K Shen; O C H Kwok; D E Hill; P Thulliez
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8.  Toxoplasma gondii isolates of free-ranging chickens from Rio de Janeiro, Brazil: mouse mortality, genotype, and oocyst shedding by cats.

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Authors:  J P Dubey
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6.  CD8 T Cells and Toxoplasma gondii: A New Paradigm.

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Review 7.  Investigating the Determinants of Toxoplasma gondii Prevalence in Meat: A Systematic Review and Meta-Regression.

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8.  Overlapping Toxoplasma gondii genotypes circulating in domestic animals and humans in Southeastern Brazil.

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  8 in total

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