Related Experiment Video

Updated: Jul 19, 2026

Broth Microdilution In Vitro Screening: An Easy and Fast Method to Detect New Antifungal Compounds
08:54

Broth Microdilution In Vitro Screening: An Easy and Fast Method to Detect New Antifungal Compounds

Published on: February 14, 2018

[Emerging azole antifungals]

Michel Wolff1, Lila Bouadma, Bruno Mourvillier

  • 1Service de Réanimation Médicale et des Maladies Infectieuses, Hôpital Bichat-Claude-Bernard, AP-HP, France. michel.wolff@bch.aphp.fr

Therapie
|September 23, 2006
PubMed

Insights

Azole antifungals are crucial for invasive fungal infections in immunocompromised patients. Fluconazole is preferred for candidiasis, while voriconazole and posaconazole target molds like Aspergillus.

Area of Science:

  • Medical Mycology
  • Pharmacology
  • Infectious Diseases

Context:

  • Invasive fungal infections (IFIs) pose a significant threat, particularly to immunocompromised individuals.
  • Azole antifungals are a cornerstone in managing IFIs due to their efficacy and safety profiles.
  • The emergence of resistant fungal strains necessitates a thorough understanding of azole drug characteristics.

Purpose:

  • To review the current role and applications of key azole antifungal agents in treating invasive fungal infections.
  • To highlight the specific indications, strengths, and limitations of fluconazole, itraconazole, voriconazole, and posaconazole.
  • To inform clinical decision-making regarding the optimal use of azoles based on pathogen and patient factors.

Summary:

  • Fluconazole is the primary treatment for most invasive candidiasis, excluding infections by Candida glabrata and Candida krusei.
  • Itraconazole's utility for invasive mold infections is limited by variable bioavailability, despite activity against Aspergillus species.
  • Voriconazole offers broad-spectrum activity against molds, including Aspergillus, and is a first-line agent for invasive aspergillosis, Fusarium, and Scedosporium infections.
  • Posaconazole, available orally, shows similar in vitro activity and is indicated for refractory aspergillosis, intolerance to other treatments, and potentially for zygomycetes infections.

Impact:

  • Optimized selection of azole antifungals can improve patient outcomes and reduce treatment failures in invasive fungal infections.
  • Understanding drug bioavailability and spectrum of activity is critical for effective antifungal stewardship.
  • Further research into novel azole formulations and resistance mechanisms will enhance the management of life-threatening fungal diseases.

More Related Videos

Small-Scale Plasma Membrane Preparation for the Analysis of Candida albicans Cdr1-mGFPHis09:44

Small-Scale Plasma Membrane Preparation for the Analysis of Candida albicans Cdr1-mGFPHis

Published on: June 13, 2021

Whole Genome Sequencing of Candida glabrata for Detection of Markers of Antifungal Drug Resistance08:45

Whole Genome Sequencing of Candida glabrata for Detection of Markers of Antifungal Drug Resistance

Published on: December 28, 2017

Related Concept Videos

Antifungal Agents01:15

Antifungal Agents

Amphotericin B is a broad-spectrum antifungal agent that exploits structural differences between fungal and mammalian cell membranes. Its amphipathic structure—featuring a hydrophobic polyene-lactone ring and a hydrophilic region containing mycosamine and carboxylic acid groups—enables selective binding to ergosterol, a sterol predominantly found in fungal plasma membranes. This selective interaction underlies the drug’s antifungal activity, although weak binding to cholesterol contributes to...
Fungal Group Zygomycota01:29

Fungal Group Zygomycota

Zygomycota, previously classified as a distinct fungal group, are primarily terrestrial, saprophytic molds that play a crucial role as decomposers. Recent phylogenetic studies have revealed that these fungi are now divided into two major clades — Mucoromycota, which includes many symbiotic species, and Zoopagomycota, which primarily consists of parasitic and pathogenic fungi. These groups exhibit distinct ecological roles and reproductive strategies while sharing key structural and...
Candidiasis01:20

Candidiasis

Candidiasis is a fungal infection caused by opportunistic species of Candida. It can affect various anatomical sites, including the skin, oral cavity, nails, and genitourinary tract. Among its forms, vaginal candidiasis is the most common type of mucosal infection. It typically results from the overgrowth of Candida albicans in the vaginal mucosa. Under normal conditions, C. albicans exists as a commensal organism within the vaginal microbiota, regulated by the dominance of lactobacilli, which...
Antiprotozoal Agents01:21

Antiprotozoal Agents

Leishmaniasis is a widespread parasitic disease caused by several Leishmania species. It affects millions of people each year and remains a major public health problem in endemic regions. First-line treatment relies on pentavalent antimonials, including meglumine antimoniate and sodium stibogluconate. Even so, how these drugs work has not been fully clear, especially their interaction with parasite-specific biochemical pathways. One key target is trypanothione reductase (TR), an enzyme that...
Fungal Phylum Ascomycota01:28

Fungal Phylum Ascomycota

Phylum Ascomycota, a major division within the subkingdom Dikarya, comprises a diverse range of fungal species, including both unicellular yeasts and filamentous molds such as Aspergillus and Penicillium. These fungi thrive in a variety of habitats, from aquatic ecosystems to terrestrial environments, playing crucial ecological and economic roles.Morphology and ReproductionThe defining characteristic of Ascomycetes, commonly referred to as sac fungi, is the ascus—a sac-like structure that...
Cryptococcal Meningitis01:27

Cryptococcal Meningitis

Cryptococcal meningitis is a life-threatening opportunistic infection predominantly associated with HIV/AIDS, accounting for over 100,000 deaths annually worldwide. However, it also affects individuals with other forms of immunosuppression, including those undergoing immunosuppressive therapy, organ transplant recipients, patients with innate immunodeficiencies, and individuals with hematological disorders. The infection is caused mainly by Cryptococcus neoformans and Cryptococcus gattii,...