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Microsporidia are a group of obligate intracellular fungi that were initially classified as protists but were later reclassified based on phylogenetic, molecular, and structural evidence linking them to the Chytridiomycota. These unicellular, non-motile organisms are highly specialized parasites that infect a wide range of animal hosts, including humans. They have evolved extensive genomic and metabolic reductions, making them highly dependent on their hosts for survival.Morphology and Genomic...
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Related Experiment Video

Updated: Apr 14, 2026

Histological Quantification to Determine Lung Fungal Burden in Experimental Aspergillosis
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Azole-resistant aspergillosis.

Adilia Warris1

  • 1Honorary Consultant Paediatric Infectious Diseases & Immunology, Institute of Medical Sciences, Aberdeen Fungal Group, University of Aberdeen, Foresterhill, AB25 2ZD Aberdeen, Scotland, UK.

The Journal of Infection
|April 29, 2015
PubMed
Summary
This summary is machine-generated.

Azole-resistance in Aspergillus fumigatus is a growing concern. Mutations in the cyp51A gene drive resistance, with environmental fungicide exposure posing a significant threat to all patients.

Keywords:
A. fumigatusAspergillosisAzolesResistance

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Area of Science:

  • Medical Mycology
  • Antimicrobial Resistance

Background:

  • Emerging azole-resistance in Aspergillus fumigatus presents a significant clinical challenge for managing aspergillosis.
  • Resistance develops through individual azole treatment or environmental fungicide exposure.
  • The cyp51A gene mutations are the primary molecular mechanism driving azole resistance.

Purpose of the Study:

  • To highlight the increasing problem of azole-resistance in Aspergillus fumigatus.
  • To discuss the dual routes of resistance development: patient treatment and environmental exposure.
  • To underscore the lack of clinical guidelines and supporting evidence for treating azole-resistant aspergillosis.

Main Methods:

  • Review of current literature on azole-resistance mechanisms in Aspergillus fumigatus.
  • Analysis of the implications of environmental fungicide exposure on resistance.
  • Assessment of the current clinical and pre-clinical evidence for treatment strategies.

Main Results:

  • Azole-resistance in Aspergillus fumigatus is an increasing global health issue.
  • Environmental fungicide exposure is a worrying factor, potentially impacting all patient groups.
  • Mutations in the cyp51A gene are the key molecular drivers of resistance.

Conclusions:

  • Azole-resistant aspergillosis requires urgent attention due to limited treatment options.
  • Environmental resistance development poses a broad risk, irrespective of patient azole exposure history.
  • Further research and clinical guidelines are crucial for effective management.