Differential microbial clearance and immunoresponse of Balb/c (Nramp1 susceptible) and DBA2 (Nramp1 resistant) mice intracerebrally infected withMycobacterium bovisBCG (BCG)

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Differential microbial clearance and immunoresponse of Balb/c (Nramp1 susceptible) and DBA2 (Nramp1 resistant) mice intracerebrally infected with Mycobacterium bovis BCG (BCG).

In mice, the gene encoding Nramp1 (natural resistance-associated protein 1) exists in two allelic forms, differing for a point mutation. According to Nramp1 genotype, extensive literature documents a clear-cut distinction of inbred strains in two non-overlapping groups that phenotypically express resistance (Nramp1r) and susceptibility (Nramp1s) to systemic infections. Here, we provide evidence...

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Relationship between NRAMP1 gene polymorphism and efficacy of BCG vaccine in a helminth-infected population.

Infection of mothers with schistosomiasis and filariasis has been shown to influence infant responses to neonatal Bacille Calmette-Guérin (BCG) immunization. The genetic makeup of infants is also considered an important determinant for the activity of BCG vaccine. The effect of natural resistance-associated macrophage protein 1 (NRAMP1) gene polymorphism on the efficacy of BCG vaccine was exami...

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From Bcg/Lsh/Ity to Nramp1: three decades of search and research.

Gene identification in the pre-genomic era was often arduous, and the mouse Nramp1 gene (natural resistance-associated macrophage protein 1; formerly the Bcg/Lsh/Ity locus) was no exception. Yet, the three decades of gene search and research which have encompassed Nramp1 can be viewed as a journey that produced not one, but many discoveries. In this review, we provide a brief history of the Nra...

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Role of iron in Nramp1-mediated inhibition of mycobacterial growth.

Innate resistance to mycobacterial growth is mediated by a gene, Nramp1. We have previously reported that Nramp1 mRNA from macrophages of Mycobacterium bovis BCG-resistant (Bcgr) mice is more stable than Nramp1 mRNA from macrophages of BCG-susceptible (Bcgs) mice. Based on these observations and on reports that show that the closely related Nramp2 gene is a metal ion transporter, we evaluated t...

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Consequence of Nramp1 deletion to Mycobacterium tuberculosis infection in mice.

129sv mice functionally deleted of the antimicrobial resistance gene, Nramp1, were found to be as resistant as wild-type mice to infection with the virulent H37Rv strain of Mycobacterium tuberculosis, as determined by monitoring bacterial growth in major organs and recording host survival times. Death of infected mice of both types was associated with extensive infection-induced pathology in th...

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ژورنال

عنوان ژورنال: FEMS Immunology & Medical Microbiology

سال: 2002

ISSN: 0928-8244,1574-695X

DOI: 10.1111/j.1574-695x.2002.tb00547.x