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首页> 外文期刊>Parasitology Research >Genetic polymorphism in Trypanosoma cruzi I isolated from Brazilian Northeast triatomines revealed by low-stringency single specific primer–polymerase chain reaction
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Genetic polymorphism in Trypanosoma cruzi I isolated from Brazilian Northeast triatomines revealed by low-stringency single specific primer–polymerase chain reaction

机译:低严谨性单一特异性引物-聚合酶链反应揭示巴西东北三atomines中分离的克鲁斯锥虫的遗传多态性

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摘要

Different molecular markers have been employed for typing Trypanosoma cruzi strains from endemic areas of Chagas disease. The low-stringency single specific primer–polymerase chain reaction (LSSP–PCR) has been a sensitive and informative technique that uses the variable region of kinetoplast DNA minicircles as a genetic marker, allowing detection of DNA sequence variation. In the present study, we analyzed the intra-lineage genetic variability of the T. cruzi strains obtained from triatomine feces collected on filter paper FTA card by LSSP–PCR. The hybridization of the PCR products with a probe for the subgenus Schizotrypanum and a clone-specific probe from Dm28c confirmed the subgenus as T. (S.) cruzi and respective lineages as T. cruzi I. Phenetic analysis showed the presence of three clusters that diverged by different coefficients of similarity. Thirteen T. cruzi I genotypes were observed circulating among Triatoma pseudomaculata and Rhodnius nasutus from peridomiciliary and natural environments in five peri-urban and urban localities of Jaguaruana, Ceará, Brazil. These data indicate the importance of the circulation of T. cruzi I genotypes among T. pseudomaculata and R. nasutus in different environments and the possible risk of Chagas disease domestic transmission.
机译:已经使用了不同的分子标记来对来自恰加斯病流行地区的克氏锥虫菌株进行分型。低严格性的单一特异性引物-聚合酶链反应(LSSP-PCR)是一项灵敏而有益的技术,它利用动塑料DNA小环的可变区作为遗传标记,从而可以检测DNA序列变异。在本研究中,我们通过LSSP-PCR分析了从FTA卡滤纸上收集的三叶草粪便中获得的克鲁氏锥虫菌株的种内遗传变异。 PCR产物与裂殖酵母亚属探针和Dm28c克隆特异性探针的杂交证实该亚属为T.(S.)cruzi,各谱系为T. cruziI。物候分析显示存在三个簇因相似系数不同而异。在巴西塞阿拉州Jaguaruana的五个近郊和城市地区,观察到十三种T. cruzi I基因型在假睫毛虫和纳粹罗得菌之间的周缘和自然环境中循环。这些数据表明在不同的环境中伪ma虫和纳苏菌之间克鲁斯I基因型循环的重要性以及南美锥虫病家庭传播的可能风险。

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  • 来源
    《Parasitology Research》 |2008年第5期|1111-1117|共7页
  • 作者单位

    Departamento de Ciências Biológicas Fundação Oswaldo Cruz Escola Nacional de Saúde Pública Rua Leopoldo Bulhões 1480 CP 926 Rio de Janeiro 21041-210 Brazil;

    Laboratório de Eco-epidemiologia da Doença de Chagas Fundação Oswaldo Cruz Instituto Oswaldo Cruz Av. Brasil 4365 CP926 Rio de Janeiro 21045-900 Brazil;

    Laboratório de Eco-epidemiologia da Doença de Chagas Fundação Oswaldo Cruz Instituto Oswaldo Cruz Av. Brasil 4365 CP926 Rio de Janeiro 21045-900 Brazil;

    Laboratório de Sistemática Bioquímica Fundação Oswaldo Cruz Instituto Oswaldo Cruz Av. Brasil 4365 CP926 Rio de Janeiro 21045-900 Brazil;

    Laboratório de Eco-epidemiologia da Doença de Chagas Fundação Oswaldo Cruz Instituto Oswaldo Cruz Av. Brasil 4365 CP926 Rio de Janeiro 21045-900 Brazil;

    Departamento de Ciências Biológicas Fundação Oswaldo Cruz Escola Nacional de Saúde Pública Rua Leopoldo Bulhões 1480 CP 926 Rio de Janeiro 21041-210 Brazil;

    Laboratório de Sistemática Bioquímica Fundação Oswaldo Cruz Instituto Oswaldo Cruz Av. Brasil 4365 CP926 Rio de Janeiro 21045-900 Brazil;

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