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Protective Effect of the Nramp1 BB Genotype against Brucella abortus in the Water Buffalo (Bubalus bubalis)

机译:Nramp1 BB基因型对水牛(Bubalus bubalis)流产布鲁氏菌的保护作用

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摘要

We tested 413 water buffalo cows (142 cases and 271 controls) for the presence of anti-Brucella abortus antibodies (by the skin test, the agglutination test, and the complement fixation test) and the Nramp1 genotype (by capillary electrophoresis). Four alleles (Nramp1A, -B, -C, and -D) were detected in the 3′ untranslated region of the Nramp1 gene. The BB genotype was represented among only controls, providing evidence that this genotype confers resistance to Brucella abortus. The monocytes from the BB (resistant) subjects displayed a higher basal level of Nramp1 mRNA and a lower number of viable intracellular bacteria than did the monocytes from AA (susceptible) subjects. The higher basal level of the antibacterial protein Nramp1 most probably provides the BB animals with the possibility of controlling bacteria immediately after their entry inside the cell.
机译:我们测试了413头水牛(142例和271个对照)是否存在抗流产布鲁氏菌的抗体(通过皮肤测试,凝集测试和补体固定测试)和Nramp1基因型(通过毛细管电泳)。在Nramp1基因的3'非翻译区中检测到四个等位基因(Nramp1A,-B,-C和-D)。 BB基因型仅在对照组中出现,提供了该基因型赋予对布鲁氏菌流产的抗性的证据。与来自AA(易感)受试者的单核细胞相比,来自BB(抗性)受试者的单核细胞显示出更高的基础水平的Nramp1 mRNA和较低数量的活细胞内细菌。较高的基础水平的抗菌蛋白Nramp1最有可能为BB动物提供进入细菌后立即控制细菌的可能性。

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