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How does antifungal pharmacology differ for mucormycosis versus aspergillosis?

Russell E Lewis1, Olivier Lortholary, Brad Spellberg

  • 1Department of College of Pharmacy, The University of Houston, TX 77030, USA. rlewis@uh.edu

Clinical Infectious Diseases : an Official Publication of the Infectious Diseases Society of America
|January 17, 2012
PubMed

Insights

Mucormycosis, a serious mold infection, remains deadly despite advances in treating invasive aspergillosis. Rhizopus oryzae’s unique genome may explain its aggressive nature and antifungal resistance.

Area of Science:

  • Mycology
  • Infectious Diseases
  • Genomics

Background:

  • Invasive aspergillosis outcomes have improved for immunocompromised patients.
  • Mucormycosis, a distinct mold infection, has poor outcomes and unchanged mortality rates.
  • Advances in diagnostics and antifungals have not significantly impacted mucormycosis survival.

Purpose of the Study:

  • To investigate the genetic basis of Rhizopus oryzae's virulence and antifungal resistance.
  • To compare the pharmacological treatment strategies for mucormycosis versus invasive aspergillosis.
  • To understand the genetic plasticity of R. oryzae in relation to its aggressive growth.

Main Methods:

  • Genome sequencing of Rhizopus oryzae.
  • Comparative genomic analysis with Aspergillus fumigatus.
  • Review of pharmacological approaches for mold infections.

Main Results:

  • Rhizopus oryzae exhibits whole-genome duplication.
  • Enriched gene families in R. oryzae related to cell wall biosynthesis, ergosterol, and virulence.
  • R. oryzae shows enhanced capabilities for rapid growth and antifungal resistance compared to A. fumigatus.

Conclusions:

  • Genetic plasticity in R. oryzae contributes to its virulence and resistance.
  • Pharmacological treatment of mucormycosis may require different strategies than invasive aspergillosis.
  • Further research into R. oryzae's unique genetic makeup is crucial for developing targeted therapies.

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