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The contribution of nutrient metal acquisition and metabolism to Acinetobacter baumannii survival within the host

Brittany L Mortensen1, Eric P Skaar1

  • 1Department of Pathology, Microbiology, and Immunology, Vanderbilt University School of Medicine Nashville, TN, USA.

Frontiers in Cellular and Infection Microbiology
|December 31, 2013
PubMed

Insights

Acinetobacter baumannii, a major cause of ICU infections, uses metal homeostasis systems to survive. Targeting these systems offers a promising strategy for developing new antimicrobials against this resilient pathogen.

Area of Science:

  • Microbiology
  • Infectious Diseases
  • Medical Science

Background:

  • Acinetobacter baumannii is a significant cause of mortality in intensive care units (ICUs), leading to various infections like ventilator-associated pneumonia.
  • The bacterium's rapid antibiotic resistance and substantial disease burden pose a serious healthcare threat.
  • A. baumannii adapts to host environments by modifying metabolism and acquiring essential nutrient metals sequestered by the host.

Purpose of the Study:

  • To review the current understanding of Acinetobacter baumannii's interaction with vertebrate cells.
  • To emphasize the role of metal homeostasis systems in A. baumannii colonization and virulence.
  • To explore the potential of targeting metal homeostasis systems for novel antimicrobial development.

Main Methods:

  • Literature review of published research on Acinetobacter baumannii.
  • Analysis of bacterial adaptation mechanisms, focusing on nutrient metal acquisition.
  • Examination of the contribution of metal homeostasis systems to bacterial-host interactions.

Main Results:

  • A. baumannii possesses robust metal homeostasis systems, crucial for colonizing diverse tissues.
  • Iron and zinc homeostasis are particularly important for A. baumannii's surface interactions and growth in vertebrates.
  • These metal homeostasis systems are integral to the bacterium's survival in the host environment.

Conclusions:

  • Metal homeostasis systems are critical for Acinetobacter baumannii's ability to thrive in host organisms.
  • Exploiting these bacterial metal acquisition and regulation systems presents a viable strategy for developing new antimicrobial therapies.
  • Targeting metal homeostasis offers a promising avenue to combat the growing threat of multidrug-resistant A. baumannii infections.
Keywords:
Acinetobacteradherenceironpathogenesispersistencezinc

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