Antifungal Mechanisms and Drug Development
Summary
The treatment of fungal infections hinges on disrupting key biosynthetic pathways or structural components that are unique to fungi. Polyene agents bind ergosterol in fungal membranes, forming pores that induce ion leakage and cell death. Azole compounds inhibit lanosterol 14α-demethylase, impairing ergosterol synthesis and compromising membrane integrity. Allylamines target squalene epoxidase, leading to toxic accumulation of squalene and depletion of membrane sterols. Echinocandins inhibit β-1,3-glucan synthase, weakening the cell wall and eliciting osmotic rupture. 5-Flucytosine interferes with nucleic acid synthesis through conversion to 5-fluorouracil within fungal cells. Despite these advances, the limited repertoire of drug classes, escalating incidence of resistance, and notable adverse effects underscore the need for novel agents and improved formulations. Current development efforts span rational design of enzyme inhibitors, peptide-based fungicides, optimised pharmacokinetic/pharmacodynamic profiles, and innovative delivery systems such as nanoemulsions and hydrogels. Integrated strategies that combine host pharmacogenomics, therapeutic drug monitoring and adjuvant therapies aim to enhance clinical outcomes and forestall resistance. The global burden of invasive and superficial mycoses, particularly among immunocompromised populations, drives an urgent imperative for next-generation antifungals that are both effective and safe.
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Antifungal Mechanisms and Drug Development publication trend
The graph below shows the total number of articles in antifungal mechanisms and drug development across all publications each year (not limited to Nature Index journals).
Technical terms
Ergosterol: A principal fungal membrane sterol essential for membrane fluidity and integrity.
Azoles: A class of antifungals that block lanosterol 14α-demethylase, halting ergosterol synthesis.
Echinocandins: Drugs that inhibit β-1,3-glucan synthase, disrupting fungal cell-wall construction.
Pharmacokinetics (PK): The study of drug absorption, distribution, metabolism and excretion.
Pharmacodynamics (PD): The analysis of drug effects on organisms and the relationship between concentration and effect.
Nanoemulsion: A submicrometre oil-in-water dispersion used to improve solubility and controlled release of hydrophobic drugs.
References
- Antifungals: From Pharmacokinetics to Clinical Practice. Antibiotics (2023).
- Anti-aspergillosis and anti-mucormycosis potential of eucalyptus essential oil based O/W nanoemulsions containing azole based drugs from Eucalyptus globulus. Journal of Umm Al-Qura University for Applied Sciences (2024).
- The Effect of Terbinafine and Its Ionic Salts on Certain Fungal Plant Pathogens. Molecules (2023).
- Preliminary Characterization of NP339, a Novel Polyarginine Peptide with Broad Antifungal Activity. Antimicrobial Agents and Chemotherapy (2021).
- A Review on Antifungal Efficiency of Plant Extracts Entrenched Polysaccharide-Based Nanohydrogels. Nutrients (2021).
- Antifungals and Drug Resistance. Encyclopedia (2022).
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