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Yersiniae and iron. A study in host-parasite relationships
R M Robins-Browne1, J K Prpic, S J Stuart
1Department of Microbiology, University of Melbourne, Parkville, Vict., Australia.
Contributions to Microbiology and Immunology
|January 1, 1987
Summary
Pathogenic Yersinia bacteria lack siderophores, hindering iron acquisition and growth. Desferrioxamine B treatment in iron-overloaded patients may increase the risk of Yersinia infections.
Area of Science:
- Microbiology
- Pathogenesis
- Bacterial Iron Acquisition
Background:
- Enterobacteria utilize siderophores for iron uptake, crucial for growth.
- Pathogenic Yersinia species do not produce siderophores, limiting their proliferation under iron-restricted conditions.
- Systemic Yersinia enterocolitica infections often occur in iron-overloaded individuals.
Purpose of the Study:
- To investigate the role of siderophores in Yersinia pathogenesis.
- To understand why Yersinia infections are prevalent in iron-overloaded patients.
- To assess the impact of desferrioxamine B on Yersinia growth and infection risk.
Main Methods:
- Analysis of siderophore production in pathogenic Yersinia strains.
- Correlation of Yersinia infections with patient iron status.
- In vitro and in vivo assessment of desferrioxamine B effects on Yersinia enterocolitica.
Main Results:
- Yersinia species generally lack siderophore production.
- Yersinia enterocolitica thrives in iron-rich environments and in patients treated with desferrioxamine B.
- Some Yersinia species produce siderophores but paradoxically do not proliferate in tissues.
Conclusions:
- The absence of siderophores is a key factor limiting Yersinia proliferation under iron limitation.
- Desferrioxamine B treatment may exacerbate Yersinia infections in iron-overloaded patients by providing a usable iron source.
- Further research is needed to elucidate the complex interactions between Yersinia, iron metabolism, and host immunity.