The Siderophore 2,3-Dihydroxybenzoic Acid Is Not Required for Virulence of Brucella abortus in BALB/c Mice

Author:

Bellaire Bryan H.1,Elzer Philip H.2,Baldwin Cynthia L.3,Roop R. Martin1

Affiliation:

1. Department of Microbiology and Immunology, Louisiana State University Medical Center, Shreveport, Louisiana 71130-39321;

2. Department of Veterinary Science, Louisiana State University Agricultural Center, Baton Rouge, Louisiana 708032;

3. Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, Massachusetts 010033

Abstract

ABSTRACT 2,3-Dihydroxybenzoic acid (DHBA) is the only siderophore described for Brucella , and previous studies suggested that DHBA might contribute to the capacity of these organisms to persist in host macrophages. Employing an isogenic siderophore mutant ( ΔentC ) constructed from virulent Brucella abortus 2308, however, we found that production of DHBA is not required for replication in cultured murine macrophages or for the establishment and maintenance of chronic infection in the BALB/c mouse model.

Publisher

American Society for Microbiology

Subject

Infectious Diseases,Immunology,Microbiology,Parasitology

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3. Bellaire B. H. Baldwin C. L. Elzer P. H. Roop R. M. II. Contribution of the Brucella abortus 2 3-dihydroxybenzoic acid (DHBA) biosynthesis operon to virulence in ruminants abstr. 4 Proceedings of the 79th Annual Conference of Research Workers in Animal Disease 1998 43

4. Interferon gamma-activated human monocytes downregulate transferrin receptors and inhibit the intracellular replication of Legionella pneumophila by limiting the availability of iron;Byrd T. F.;J. Clin. Investig.,1989

5. Earhart C. F. Uptake and metabolism of iron and molybdenum Escherichia coli and Salmonella: cellular and molecular biology 2nd ed. Neidhardt F. C. Curtiss R. III Ingraham J. L. Lin E. C. C. Low K. B. Magasanik B. Reznikoff W. S. Riley M. Schaechter M. Umbarger H. E. 1996 1075 1090 American Society for Microbiology Washington D.C

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